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2008-04-29ipmi: don't grab locks in run-to-completion modeKonstantin Baydarov
This patch prevents deadlocks in IPMI panic handler caused by msg_lock in smi_info structure and waiting_msgs_lock in ipmi_smi structure. [cminyard@mvista.com: remove unnecessary memory barriers] Signed-off-by: Konstantin Baydarov <kbaidarov@ru.mvista.com> Signed-off-by: Corey Minyard <cminyard@mvista.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-04-29ipmi: run to completion fixesCorey Minyard
The "run_to_completion" mode was somewhat broken. Locks need to be avoided in run_to_completion mode, and it shouldn't be used by normal users, just internally for panic situations. This patch removes locks in run_to_completion mode and removes the user call for setting the mode. The only user was the poweroff code, but it was easily converted to use the polling interface. [akpm@linux-foundation.org: coding-style fixes] Signed-off-by: Corey Minyard <cminyard@mvista.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-04-29ipmi: hold ATTN until upper layer readyCorey Minyard
Hold handling of ATTN until the upper layer has reported that it is ready. Signed-off-by: Corey Minyard <cminyard@mvista.com> Cc: Patrick Schoeller <Patrick.Schoeller@hp.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-04-29vt: fix background color on line feedJan Engelhardt
A command that causes a line feed while a background color is active, such as perl -e 'print "x" x 60, "\e[44m", "x" x 40, "\e[0m\n"' and perl -e 'print "x" x 40, "\e[44m\n", "x" x 40, "\e[0m\n"' causes the line that was started as a result of the line feed to be completely filled with the currently active background color instead of the default color. When scrolling, part of the current screen is memcpy'd/memmove'd to the new region, and the new line(s) that will appear as a result are cleared using memset. However, the lines are cleared with vc->vc_video_erase_char, causing them to be colored with the currently active background color. This is different from X11 terminal emulators which always paint the new lines with the default background color (e.g. `xterm -bg black`). The clear operation (\e[1J and \e[2J) also use vc_video_erase_char, so a new vc->vc_scrl_erase_char is introduced with contains the erase character used for scrolling, which is built from vc->vc_def_color instead of vc->vc_color. Signed-off-by: Jan Engelhardt <jengelh@computergmbh.de> Cc: "Antonino A. Daplas" <adaplas@pol.net> Cc: "H. Peter Anvin" <hpa@zytor.com> Cc: Alan Cox <alan@lxorguk.ukuu.org.uk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-04-29sysrq: add show-backtrace-on-all-cpus functionRik van Riel
SysRQ-P is not always useful on SMP systems, since it usually ends up showing the backtrace of a CPU that is doing just fine, instead of the backtrace of the CPU that is having problems. This patch adds SysRQ show-all-cpus(L), which shows the backtrace of every active CPU in the system. It skips idle CPUs because some SMP systems are just too large and we already know what the backtrace of the idle task looks like. [akpm@linux-foundation.org: coding-style fixes] Signed-off-by: Rik van Riel <riel@redhat.com> Randy Dunlap <randy.dunlap@oracle.com> Cc: <lwoodman@redhat.com> Cc: Ingo Molnar <mingo@elte.hu> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-04-29ipwireless: remove dead codeJiri Kosina
Remove unused leftovers of debugging functions. 2.6.25 material. Reported-by: Adrian Bunk <bunk@kernel.org> Signed-off-by: Jiri Kosina <jkosina@suse.cz> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-04-29make /dev/kmem a config optionArjan van de Ven
Make /dev/kmem a config option; /dev/kmem is VERY rarely used, and when used, it's generally for no good (rootkits tend to be the most common users). With this config option, users have the choice to disable /dev/kmem, saving some size as well. A patch to disable /dev/kmem has been in the Fedora and RHEL kernels for 4+ years now without any known problems or legit users of /dev/kmem. [akpm@linux-foundation.org: make CONFIG_DEVKMEM default to y] Signed-off-by: Arjan van de Ven <arjan@linux.intel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-04-28drivers: fix integer as NULL pointer warningsHarvey Harrison
Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-04-28drivers: atm, char fix integer as NULL pointer warningsHarvey Harrison
drivers/atm/nicstar.c:418:25: warning: Using plain integer as NULL pointer drivers/char/drm/r128_cce.c:820:25: warning: Using plain integer as NULL pointer drivers/char/tty_io.c:1183:10: warning: Using plain integer as NULL pointer Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-04-28VT notifier extension for accessibilityKarl Dahlke
Some accessibility modules need to be able to catch the output on the console before the VT interpretation, and possibly swallow it. [akpm@linux-foundation.org: coding-style fixes] Signed-off-by: Samuel Thibault <samuel.thibault@ens-lyon.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-04-28char: make functions static in synclinkmp.cHarvey Harrison
All were forward declared with static. Fixes sparse warnings: drivers/char/synclinkmp.c:1476:5: warning: symbol 'read_proc' was not declared. Should it be static? drivers/char/synclinkmp.c:2027:5: warning: symbol 'bh_action' was not declared. Should it be static? drivers/char/synclinkmp.c:2058:6: warning: symbol 'bh_handler' was not declared. Should it be static? drivers/char/synclinkmp.c:2103:6: warning: symbol 'bh_receive' was not declared. Should it be static? drivers/char/synclinkmp.c:2112:6: warning: symbol 'bh_transmit' was not declared. Should it be static? drivers/char/synclinkmp.c:2124:6: warning: symbol 'bh_status' was not declared. Should it be static? drivers/char/synclinkmp.c:2136:6: warning: symbol 'isr_timer' was not declared. Should it be static? drivers/char/synclinkmp.c:2162:6: warning: symbol 'isr_rxint' was not declared. Should it be static? drivers/char/synclinkmp.c:2221:6: warning: symbol 'isr_rxrdy' was not declared. Should it be static? drivers/char/synclinkmp.c:2351:6: warning: symbol 'isr_txint' was not declared. Should it be static? drivers/char/synclinkmp.c:2379:6: warning: symbol 'isr_txrdy' was not declared. Should it be static? drivers/char/synclinkmp.c:2410:6: warning: symbol 'isr_rxdmaok' was not declared. Should it be static? drivers/char/synclinkmp.c:2427:6: warning: symbol 'isr_rxdmaerror' was not declared. Should it be static? drivers/char/synclinkmp.c:2445:6: warning: symbol 'isr_txdmaok' was not declared. Should it be static? drivers/char/synclinkmp.c:2463:6: warning: symbol 'isr_txdmaerror' was not declared. Should it be static? drivers/char/synclinkmp.c:2480:6: warning: symbol 'isr_io_pin' was not declared. Should it be static? drivers/char/synclinkmp.c:3420:5: warning: symbol 'alloc_dma_bufs' was not declared. Should it be static? drivers/char/synclinkmp.c:3494:5: warning: symbol 'alloc_buf_list' was not declared. Should it be static? drivers/char/synclinkmp.c:3553:5: warning: symbol 'alloc_frame_bufs' was not declared. Should it be static? drivers/char/synclinkmp.c:3570:6: warning: symbol 'free_dma_bufs' was not declared. Should it be static? drivers/char/synclinkmp.c:3580:5: warning: symbol 'alloc_tmp_rx_buf' was not declared. Should it be static? drivers/char/synclinkmp.c:3588:6: warning: symbol 'free_tmp_rx_buf' was not declared. Should it be static? drivers/char/synclinkmp.c:3594:5: warning: symbol 'claim_resources' was not declared. Should it be static? drivers/char/synclinkmp.c:3681:6: warning: symbol 'release_resources' was not declared. Should it be static? drivers/char/synclinkmp.c:3737:6: warning: symbol 'add_device' was not declared. Should it be static? drivers/char/synclinkmp.c:3860:6: warning: symbol 'device_init' was not declared. Should it be static? drivers/char/synclinkmp.c:4054:6: warning: symbol 'enable_loopback' was not declared. Should it be static? drivers/char/synclinkmp.c:4101:6: warning: symbol 'set_rate' was not declared. Should it be static? drivers/char/synclinkmp.c:4147:6: warning: symbol 'rx_stop' was not declared. Should it be static? drivers/char/synclinkmp.c:4168:6: warning: symbol 'rx_start' was not declared. Should it be static? drivers/char/synclinkmp.c:4225:6: warning: symbol 'tx_start' was not declared. Should it be static? drivers/char/synclinkmp.c:4295:6: warning: symbol 'tx_stop' was not declared. Should it be static? drivers/char/synclinkmp.c:4322:6: warning: symbol 'tx_load_fifo' was not declared. Should it be static? drivers/char/synclinkmp.c:4371:6: warning: symbol 'reset_port' was not declared. Should it be static? drivers/char/synclinkmp.c:4395:6: warning: symbol 'reset_adapter' was not declared. Should it be static? drivers/char/synclinkmp.c:4407:6: warning: symbol 'async_mode' was not declared. Should it be static? drivers/char/synclinkmp.c:4546:6: warning: symbol 'hdlc_mode' was not declared. Should it be static? drivers/char/synclinkmp.c:4748:6: warning: symbol 'tx_set_idle' was not declared. Should it be static? drivers/char/synclinkmp.c:4768:6: warning: symbol 'get_signals' was not declared. Should it be static? drivers/char/synclinkmp.c:4797:6: warning: symbol 'set_signals' was not declared. Should it be static? drivers/char/synclinkmp.c:4826:6: warning: symbol 'rx_reset_buffers' was not declared. Should it be static? drivers/char/synclinkmp.c:4837:6: warning: symbol 'rx_free_frame_buffers' was not declared. Should it be static? drivers/char/synclinkmp.c:4865:5: warning: symbol 'rx_get_frame' was not declared. Should it be static? drivers/char/synclinkmp.c:5040:6: warning: symbol 'tx_load_dma_buffer' was not declared. Should it be static? drivers/char/synclinkmp.c:5080:5: warning: symbol 'register_test' was not declared. Should it be static? drivers/char/synclinkmp.c:5119:5: warning: symbol 'irq_test' was not declared. Should it be static? drivers/char/synclinkmp.c:5211:5: warning: symbol 'init_adapter' was not declared. Should it be static? drivers/char/synclinkmp.c:5270:5: warning: symbol 'loopback_test' was not declared. Should it be static? drivers/char/synclinkmp.c:5335:5: warning: symbol 'adapter_test' was not declared. Should it be static? drivers/char/synclinkmp.c:5397:5: warning: symbol 'memory_test' was not declared. Should it be static? drivers/char/synclinkmp.c:5449:6: warning: symbol 'load_pci_memory' was not declared. Should it be static? drivers/char/synclinkmp.c:5468:6: warning: symbol 'trace_block' was not declared. Should it be static? drivers/char/synclinkmp.c:5503:6: warning: symbol 'tx_timeout' was not declared. Should it be static? drivers/char/synclinkmp.c:5530:6: warning: symbol 'status_timeout' was not declared. Should it be static? drivers/char/synclinkmp.c:5581:15: warning: symbol 'read_reg' was not declared. Should it be static? drivers/char/synclinkmp.c:5586:6: warning: symbol 'write_reg' was not declared. Should it be static? drivers/char/synclinkmp.c:5592:5: warning: symbol 'read_reg16' was not declared. Should it be static? drivers/char/synclinkmp.c:5598:6: warning: symbol 'write_reg16' was not declared. Should it be static? drivers/char/synclinkmp.c:5604:15: warning: symbol 'read_status_reg' was not declared. Should it be static? drivers/char/synclinkmp.c:5610:6: warning: symbol 'write_control_reg' was not declared. Should it be static? Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com> Cc: Paul Fulghum <paulkf@microgate.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-04-28synclink drivers bool conversionJoe Perches
Remove more TRUE/FALSE defines and uses Remove == TRUE tests Convert BOOLEAN to bool Convert int to bool where appropriate Signed-off-by: Joe Perches <joe@perches.com> Acked-by: Paul Fulghum <paulkf@microgate.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-04-28mm: introduce node_zonelist() for accessing the zonelist for a GFP maskMel Gorman
Introduce a node_zonelist() helper function. It is used to lookup the appropriate zonelist given a node and a GFP mask. The patch on its own is a cleanup but it helps clarify parts of the two-zonelist-per-node patchset. If necessary, it can be merged with the next patch in this set without problems. Reviewed-by: Christoph Lameter <clameter@sgi.com> Signed-off-by: Mel Gorman <mel@csn.ul.ie> Signed-off-by: Lee Schermerhorn <lee.schermerhorn@hp.com> Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> Cc: Mel Gorman <mel@csn.ul.ie> Cc: Christoph Lameter <clameter@sgi.com> Cc: Hugh Dickins <hugh@veritas.com> Cc: Nick Piggin <nickpiggin@yahoo.com.au> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-04-28drivers/char/rtc.c: use time_before, time_before_eq, etcJulia Lawall
The functions time_before, time_before_eq, time_after, and time_after_eq are more robust for comparing jiffies against other values. A simplified version of the semantic patch making this change is as follows: (http://www.emn.fr/x-info/coccinelle/) // <smpl> @ change_compare_np @ expression E; @@ ( - jiffies <= E + time_before_eq(jiffies,E) | - jiffies >= E + time_after_eq(jiffies,E) | - jiffies < E + time_before(jiffies,E) | - jiffies > E + time_after(jiffies,E) ) @ include depends on change_compare_np @ @@ #include <linux/jiffies.h> @ no_include depends on !include && change_compare_np @ @@ #include <linux/...> + #include <linux/jiffies.h> // </smpl> Signed-off-by: Julia Lawall <julia@diku.dk> Cc: Ingo Molnar <mingo@elte.hu> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Alessandro Zummo <a.zummo@towertech.it> Cc: David Brownell <david-b@pacbell.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-04-28rtc: avoid legacy drivers with generic frameworkDavid Brownell
Kconfig tweaks to help reduce RTC configuration bugs, by avoiding legacy RTC drivers when the generic RTC framework is enabled: - If rtc-cmos is selected, disable the legacy rtc driver; - When using generic RTC on x86, enable rtc-cmos by default; - In the old "chardev RTC" section of Kconfig, add a comment warning people off these (seven) legacy RTC drivers when the generic framework is in use. People can still use the legacy drivers if they want (or need) to. This doesn't fix the broken dependencies for the legacy "CMOS" RTC driver. Ideally it would be a full list of platforms where it works, not a partial list of ones where it won't. Or better yet, it would depend on a "HAVE_CMOS_RTC" flag defined by various platforms ... surely there's a Kconfig style guideline lurking there. Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Acked-by: Alessandro Zummo <a.zummo@towertech.it> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-04-26Merge branch 'agp-patches' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/airlied/agp-2.6 * 'agp-patches' of git://git.kernel.org/pub/scm/linux/kernel/git/airlied/agp-2.6: agp: convert drivers/char/agp/frontend.c to use unlocked_ioctl agp: fix shadowed variable warning in amd-k7-agp.c
2008-04-26agp: convert drivers/char/agp/frontend.c to use unlocked_ioctlMathieu Segaud
As of now, agp_compat_ioctl already runs without the BKL. Mutual exclusion is enforced by agp_fe.agp_mutex in agp_ioctl() and agp_compat_ioctl(). Apply the same locking rationale to the two functions allowing BKL cleanup. Signed-off-by: Mathieu Segaud <mathieu.segaud@regala.cx> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Dave Airlie <airlied@linux.ie>
2008-04-26agp: fix shadowed variable warning in amd-k7-agp.cHarvey Harrison
Introduced between 2.6.25-rc2 and -rc3 drivers/char/agp/amd-k7-agp.c:439:6: warning: symbol 'cap_ptr' shadows an earlier one drivers/char/agp/amd-k7-agp.c:414:5: originally declared here cap_ptr is never used again in this function, don't bother redeclaring. Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Dave Airlie <airlied@linux.ie>
2008-04-26drm: _end is shadowing real _end, just rename it.Dave Airlie
Signed-off-by: Dave Airlie <airlied@linux.ie>
2008-04-26drm/vbl rework: rework how the drm deals with vblank.Jesse Barnes
Other Authors: Michel Dänzer <michel@tungstengraphics.com> mga: Ian Romanick <idr@us.ibm.com> via: Thomas Hellstrom <thomas-at-tungstengraphics-dot-com> This re-works the DRM internals to provide a better interface for drivers to expose vblank on multiple crtcs. It also includes work done by Michel on making i915 triple buffering and pageflipping work properly. Signed-off-by: Dave Airlie <airlied@redhat.com>
2008-04-26drm: reorganise minor number handling using backported modesetting code.Dave Airlie
rips out the head crap and replaces it with an idr and drm_minor structure Signed-off-by: Dave Airlie <airlied@redhat.com>
2008-04-26drm/i915: Handle tiled buffers in vblank taskletKeith Packard
The vblank tasklet update code must build 2D blt commands with the appropriate tiled flags Signed-off-by: Dave Airlie <airlied@redhat.com>
2008-04-26drm/i965: On I965, use correct 3DSTATE_DRAWING_RECTANGLE command in vblankKeith Packard
The batchbuffer submission paths were fixed to use the 965-specific command, but the vblank tasklet was not. When the older version is sent, the 965 will lock up. Signed-off-by: Dave Airlie <airlied@redhat.com>
2008-04-26drm: Remove unneeded dma sync in ATI pcigart allocBenjamin Herrenschmidt
Now that the ATI pcigart code uses dma_alloc_coherent, we don't need the dma_sync_single_for_device() that we used to have here. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Dave Airlie <airlied@redhat.com>
2008-04-26drm: Fix mismerge of non-coherent DMA patchBenjamin Herrenschmidt
The patch for supporting non coherent PCI DMA in the DRM was mismerged causing the page protection to be updated for the wrong type of mapping. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Dave Airlie <airlied@redhat.com>
2008-04-25Merge branch 'master' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc * 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc: (49 commits) [POWERPC] Add zImage.iseries to arch/powerpc/boot/.gitignore [POWERPC] bootwrapper: fix build error on virtex405-head.S [POWERPC] 4xx: Fix 460GT support to not enable FPU [POWERPC] 4xx: Add NOR FLASH entries to Canyonlands and Glacier dts [POWERPC] Xilinx: of_serial support for Xilinx uart 16550. [POWERPC] Xilinx: boot support for Xilinx uart 16550. [POWERPC] celleb: Add support for PCI Express [POWERPC] celleb: Move miscellaneous files for Beat [POWERPC] celleb: Move a file for SPU on Beat [POWERPC] celleb: Move files for Beat mmu and iommu [POWERPC] celleb: Move files for Beat hvcall interfaces [POWERPC] celleb: Move the SCC related code for celleb [POWERPC] celleb: Move the files for celleb base support [POWERPC] celleb: Consolidate io-workarounds code [POWERPC] cell: Generalize io-workarounds code [POWERPC] Add CONFIG_PPC_PSERIES_DEBUG to enable debugging for platforms/pseries [POWERPC] Convert from DBG() to pr_debug() in platforms/pseries/ [POWERPC] Register udbg console early on pseries LPAR [POWERPC] Mark udbg console as CON_ANYTIME, ie. callable early in boot [POWERPC] Set udbg_console index to 0 ...
2008-04-25Merge branch 'for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/x86/linux-2.6-x86-pat * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/x86/linux-2.6-x86-pat: generic: add ioremap_wc() interface wrapper /dev/mem: make promisc the default pat: cleanups x86: PAT use reserve free memtype in mmap of /dev/mem x86: PAT phys_mem_access_prot_allowed for dev/mem mmap x86: PAT avoid aliasing in /dev/mem read/write devmem: add range_is_allowed() check to mmap of /dev/mem x86: introduce /dev/mem restrictions with a config option
2008-04-25Merge branch 'for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input: (40 commits) Input: wacom - add support for Cintiq 20WSX Input: ucb1400_ts - IRQ probe fix Input: at32psif - update MODULE_AUTHOR with new email Input: mac_hid - add lockdep annotation to emumousebtn Input: i8042 - fix incorrect usage of strncpy and strncat Input: bf54x-keys - add infrastructure for keypad wakeups Input: add MODULE_ALIAS() to hotpluggable platform modules Input: drivers/char/keyboard.c - use time_after Input: fix ordering in joystick Makefile Input: wm97xx-core - support use as a wakeup source Input: wm97xx-core - use IRQF_SAMPLE_RANDOM Input: wm97xx-core - only schedule interrupt handler if not already scheduled Input: add Zhen Hua driver Input: aiptek - add support for Genius G-PEN 560 tablet Input: wacom - implement suspend and autosuspend Input: xpad - set proper buffer length for outgoing requests Input: omap-keypad - fix build warning Input: gpio_keys - irq handling cleanup Input: add PS/2 serio driver for AVR32 devices Input: put ledstate in the keyboard notifier ...
2008-04-24x86: PAT use reserve free memtype in mmap of /dev/memvenkatesh.pallipadi@intel.com
Use reserve_memtype and free_memtype wrappers for /dev/mem mmaps. The memtype is slightly complicated here, given that we have to support existing X mappings. We fallback on UC_MINUS for that. Signed-off-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com> Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-24x86: PAT phys_mem_access_prot_allowed for dev/mem mmapvenkatesh.pallipadi@intel.com
Introduce phys_mem_access_prot_allowed(), which checks whether the mapping is possible, without any conflicts and returns success or failure based on that. phys_mem_access_prot() by itself does not allow failure case. This ability to return error is needed for PAT where we may have aliasing conflicts. x86 setup __HAVE_PHYS_MEM_ACCESS_PROT and move x86 specific code out of /dev/mem into arch specific area. Signed-off-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com> Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-24x86: PAT avoid aliasing in /dev/mem read/writevenkatesh.pallipadi@intel.com
Add xlate and unxlate around /dev/mem read/write. This sets up the mapping that can be used for /dev/mem read and write without aliasing worries. Signed-off-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com> Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-24devmem: add range_is_allowed() check to mmap of /dev/memVenki Pallipadi
Earlier patch that introduced CONFIG_NONPROMISC_DEVMEM, did the range_is_allowed() check only for read and write. Add range_is_allowed() check to mmap of /dev/mem as well. Changes the paramaters of range_is_allowed() to pfn and size to handle more than 32 bits of physical address on 32 bit arch cleanly. Signed-off-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-04-24x86: introduce /dev/mem restrictions with a config optionArjan van de Ven
This patch introduces a restriction on /dev/mem: Only non-memory can be read or written unless the newly introduced config option is set. The X server needs access to /dev/mem for the PCI space, but it doesn't need access to memory; both the file permissions and SELinux permissions of /dev/mem just make X effectively super-super powerful. With the exception of the BIOS area, there's just no valid app that uses /dev/mem on actual memory. Other popular users of /dev/mem are rootkits and the like. (note: mmap access of memory via /dev/mem was already not allowed since a really long time) People who want to use /dev/mem for kernel debugging can enable the config option. The restrictions of this patch have been in the Fedora and RHEL kernels for at least 4 years without any problems. Signed-off-by: Arjan van de Ven <arjan@linux.intel.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-04-24Input: drivers/char/keyboard.c - use time_afterJulia Lawall
The functions time_before, time_before_eq, time_after, and time_after_eq are more robust for comparing jiffies against other values. Signed-off-by: Julia Lawall <julia@diku.dk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
2008-04-24Merge branch 'for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/cooloney/blackfin-2.6 * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/cooloney/blackfin-2.6: (85 commits) Blackfin char driver for Blackfin on-chip OTP memory (v3) Blackfin Serial Driver: fix bug - use mod_timer to replace only add_timer. Blackfin Serial Driver: the uart break anomaly has been given its own number, so switch to it Blackfin Serial Driver: use BFIN_UART_NR_PORTS to help SIR driver in uart port. Blackfin Serial Driver: Fix bug - kernel hangs when accessing uart 0 on bf537 when booting u-boot and linux on uart 1 Blackfin Serial Driver: punt unused lsr variable Blackfin Serial Driver: Enable IR function when user application (irattach /dev/ttyBFx -s) call TIOCSETD ioctl with line discipline N_IRDA [Blackfin] arch: add include/boot .gitignore files [Blackfin] arch: Functional power management support: Add support for cpu frequency scaling [Blackfin] arch: Functional power management support: Remove broken cpu frequency scaling drivers [Blackfin] arch: Equalize include files: Add PLL_DIV Masks [Blackfin] arch: Add a warning about the value of CLKIN. [Blackfin] arch: take DDR DEVWD into consideration as well for BF548 [Blackfin] arch: Remove the circular buffering mechanism for exceptions [Blackfin] arch: lose unnecessary dependency on CONFIG_BFIN_ICACHE for MPU [Blackfin] arch: fix bug - before assign new channel to the map register, need clear the bits first. [Blackfin] arch: add Blackfin on-chip SIR IrDA driver support [Blackfin] arch: BF54x memsizes are in mbits, not mbytes [Blackfin] arch: try to remove condition that causes double fault, by checking current before it gets dereferenced [Blackfin] arch: Update anomaly list. ...
2008-04-25Blackfin char driver for Blackfin on-chip OTP memory (v3)Mike Frysinger
initial char driver for otp memory (only read supported atm ... needs real examples/docs for write support) v2-v3: - fixup __initdata with __initconst, as we are heading for 2.6.26 Signed-off-by: Mike Frysinger <vapier.adi@gmail.com> Signed-off-by: Bryan Wu <cooloney@kernel.org> Acked-by: Jiri Slaby <jirislaby@gmail.com>
2008-04-24arm/mach-integrator/time.c, mwave: revert portions of recent irq cleanupsJeff Garzik
The recent irq cleanups for arch/arm/mach-integrator/time.c and drivers/char/mwave/tp3780i.c changed the request_irq() dev_id parameter, but neglected to change the matching free_irq() parameter, thus creating a bug upon irq de-registration. Given that the impetus for the changes is not yet accepted upstream, it is best to revert the irq cleanups. Mostly. A comment is added to time.c to reduce future confusion, of type that led to my time.c cleanup in the first place. Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2008-04-24[POWERPC] char/xilinx_hwicap/ section fixAdrian Bunk
This patch fixes the following build error: <-- snip --> ... CC [M] drivers/char/xilinx_hwicap/xilinx_hwicap.o ... /home/bunk/linux/kernel-2.6/git/linux-2.6/drivers/char/xilinx_hwicap/xilinx_hwicap.c:806: error: hwicap_of_match causes a section type conflict /home/bunk/linux/kernel-2.6/git/linux-2.6/drivers/char/xilinx_hwicap/xilinx_hwicap.c:806: error: hwicap_of_match causes a section type conflict make[4]: *** [drivers/char/xilinx_hwicap/xilinx_hwicap.o] Error 1 <-- snip --> Signed-off-by: Adrian Bunk <bunk@kernel.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
2008-04-21Merge branch 'for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/juhl/trivial * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/juhl/trivial: (24 commits) DOC: A couple corrections and clarifications in USB doc. Generate a slightly more informative error msg for bad HZ fix typo "is" -> "if" in Makefile ext*: spelling fix prefered -> preferred DOCUMENTATION: Use newer DEFINE_SPINLOCK macro in docs. KEYS: Fix the comment to match the file name in rxrpc-type.h. RAID: remove trailing space from printk line DMA engine: typo fixes Remove unused MAX_NODES_SHIFT MAINTAINERS: Clarify access to OCFS2 development mailing list. V4L: Storage class should be before const qualifier (sn9c102) V4L: Storage class should be before const qualifier sonypi: Storage class should be before const qualifier intel_menlow: Storage class should be before const qualifier DVB: Storage class should be before const qualifier arm: Storage class should be before const qualifier ALSA: Storage class should be before const qualifier acpi: Storage class should be before const qualifier firmware_sample_driver.c: fix coding style MAINTAINERS: Add ati_remote2 driver ... Fixed up trivial conflicts in firmware_sample_driver.c
2008-04-21Merge git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6Linus Torvalds
* git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6: [HWRNG] omap: Minor updates [CRYPTO] kconfig: Ordering cleanup [CRYPTO] all: Clean up init()/fini() [CRYPTO] padlock-aes: Use generic setkey function [CRYPTO] aes: Export generic setkey [CRYPTO] api: Make the crypto subsystem fully modular [CRYPTO] cts: Add CTS mode required for Kerberos AES support [CRYPTO] lrw: Replace all adds to big endians variables with be*_add_cpu [CRYPTO] tcrypt: Change the XTEA test vectors [CRYPTO] tcrypt: Shrink the tcrypt module [CRYPTO] tcrypt: Change the usage of the test vectors [CRYPTO] api: Constify function pointer tables [CRYPTO] aes-x86-32: Remove unused return code [CRYPTO] tcrypt: Shrink speed templates [CRYPTO] tcrypt: Group common speed templates [CRYPTO] sha512: Rename sha512 to sha512_generic [CRYPTO] sha384: Hardware acceleration for s390 [CRYPTO] sha512: Hardware acceleration for s390 [CRYPTO] s390: Generic sha_update and sha_final [CRYPTO] api: Switch to proc_create()
2008-04-21Merge branch 'irq-cleanups-upstream' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/jgarzik/misc-2.6 * 'irq-cleanups-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/jgarzik/misc-2.6: [ISDN] minor irq handler cleanups drivers/char: minor irq handler cleanups [PPC] minor irq handler cleanups [BLACKFIN] minor irq handler cleanups [SPARC] minor irq handler cleanups ARM minor irq handler cleanup: avoid passing unused info to irq
2008-04-21Merge branch 'master' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc * 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc: (202 commits) [POWERPC] Fix compile breakage for 64-bit UP configs [POWERPC] Define copy_siginfo_from_user32 [POWERPC] Add compat handler for PTRACE_GETSIGINFO [POWERPC] i2c: Fix build breakage introduced by OF helpers [POWERPC] Optimize fls64() on 64-bit processors [POWERPC] irqtrace support for 64-bit powerpc [POWERPC] Stacktrace support for lockdep [POWERPC] Move stackframe definitions to common header [POWERPC] Fix device-tree locking vs. interrupts [POWERPC] Make pci_bus_to_host()'s struct pci_bus * argument const [POWERPC] Remove unused __max_memory variable [POWERPC] Simplify xics direct/lpar irq_host setup [POWERPC] Use pseries_setup_i8259_cascade() in pseries_mpic_init_IRQ() [POWERPC] Turn xics_setup_8259_cascade() into a generic pseries_setup_i8259_cascade() [POWERPC] Move xics_setup_8259_cascade() into platforms/pseries/setup.c [POWERPC] Use asm-generic/bitops/find.h in bitops.h [POWERPC] 83xx: mpc8315 - fix USB UTMI Host setup [POWERPC] 85xx: Fix the size of qe muram for MPC8568E [POWERPC] 86xx: mpc86xx_hpcn - Temporarily accept old dts node identifier. [POWERPC] 86xx: mark functions static, other minor cleanups ...
2008-04-21Merge git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-2.6Linus Torvalds
* git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-2.6: (36 commits) SCSI: convert struct class_device to struct device DRM: remove unused dev_class IB: rename "dev" to "srp_dev" in srp_host structure IB: convert struct class_device to struct device memstick: convert struct class_device to struct device driver core: replace remaining __FUNCTION__ occurrences sysfs: refill attribute buffer when reading from offset 0 PM: Remove destroy_suspended_device() Firmware: add iSCSI iBFT Support PM: Remove legacy PM (fix) Kobject: Replace list_for_each() with list_for_each_entry(). SYSFS: Explicitly include required header file slab.h. Driver core: make device_is_registered() work for class devices PM: Convert wakeup flag accessors to inline functions PM: Make wakeup flags available whenever CONFIG_PM is set PM: Fix misuse of wakeup flag accessors in serial core Driver core: Call device_pm_add() after bus_add_device() in device_add() PM: Handle device registrations during suspend/resume block: send disk "change" event for rescan_partitions() sysdev: detect multiple driver registrations ... Fixed trivial conflict in include/linux/memory.h due to semaphore header file change (made irrelevant by the change to mutex).
2008-04-21Merge branch 'for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/hskinnemoen/avr32-2.6 * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/hskinnemoen/avr32-2.6: (25 commits) avr32: Add hardware power-down function call avr32: add include/asm-avr32/serial.h avr32: don't offer PARPORT_PC avr32: don't offer CONFIG_GEN_RTC avr32: don't offer CONFIG_RTC add include/asm-avr32/xor.h avr32: Remove two unused #defines from mm/init.c avr32: Implement set_rate(), set_parent() and mode() for pll1 avr32: Generic clockevents support avr32: Move sleep code into mach-at32ap avr32: Use constants from sysreg.h in asm.h avr32: Delete mostly unused header asm/intc.h avr32: start clocksource cleanup avr32: pass i2c board info through at32_add_device_twi avr32: cleanup - use _AC macro to define PAGE_SIZE Generate raw keyboard codes for AVR32 architecture atmel_usba_udc: Add support for AT91CAP9 UDPHS atmel_usba_udc: Add missing kfree() in usba_udc_remove() atmel_usba_udc: move endpoint declarations into platform data. atmel_usba_udc: Kill GPIO_PIN_NONE ...
2008-04-21sonypi: Storage class should be before const qualifierTobias Klauser
The C99 specification states in section 6.11.5: The placement of a storage-class specifier other than at the beginning of the declaration specifiers in a declaration is an obsolescent feature. Signed-off-by: Tobias Klauser <tklauser@distanz.ch> Signed-off-by: Jesper Juhl <jesper.juhl@gmail.com>
2008-04-21[HWRNG] omap: Minor updatesDavid Brownell
Minor cleanups to the OMAP RNG: - Comment update re RNG status: * yes, it works on 16xx; "rngtest" is quite happy * it's fast enough that polling vs IRQ is a non-issue - Get rid of BUG_ON - Help GCC not be stupid about inlining (object code shrink) - Remove "sparse" warning - Cope with new hotplug rule requiring "platform:" modalias And make the file header match kernel conventions. Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2008-04-20drivers/char: minor irq handler cleanupsJeff Garzik
- remove always-false tests - don't overload 'irq' argument, pass data properly via dev_id - remove pointless casts from void* Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2008-04-19DRM: remove unused dev_classGreg Kroah-Hartman
The struct class_device *dev_class is not used in the struct drm_head structure at all, so remove it as class_device is being removed entirely from the kernel. Cc: David Airlie <airlied@linux.ie> Cc: Tony Jones <tonyj@suse.de> Cc: Kay Sievers <kay.sievers@vrfy.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2008-04-19PM: Remove destroy_suspended_device()Rafael J. Wysocki
After 2.6.24 there was a plan to make the PM core acquire all device semaphores during a suspend/hibernation to protect itself from concurrent operations involving device objects. That proved to be too heavy-handed and we found a better way to achieve the goal, but before it happened, we had introduced the functions device_pm_schedule_removal() and destroy_suspended_device() to allow drivers to "safely" destroy a suspended device and we had adapted some drivers to use them. Now that these functions are no longer necessary, it seems reasonable to remove them and modify their users to use the normal device unregistration instead. Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl> Acked-by: Pavel Machek <pavel@ucw.cz> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2008-04-19avr32: don't offer CONFIG_GEN_RTCAdrian Bunk
This patch fixes the following compile error: <-- snip --> ... CC [M] drivers/char/genrtc.o /home/bunk/linux/kernel-2.6/git/linux-2.6/drivers/char/genrtc.c:58:21: error: asm/rtc.h: No such file or directory ... make[3]: *** [drivers/char/genrtc.o] Error 1 <-- snip --> Signed-off-by: Adrian Bunk <bunk@kernel.org> Signed-off-by: Haavard Skinnemoen <haavard.skinnemoen@atmel.com>