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2009-09-19tty: Char: mxser, use THRE for ASPP_OQUEUE ioctlJiri Slaby
In moxa specific ASPP_OQUEUE ioctl command, they apparently want only know whether there is space in transmitter hold register. So switch UART_LSR_TEMT to UART_LSR_THRE in that specific case according to the change in 1.14 moxa drivers. Signed-off-by: Jiri Slaby <jirislaby@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2009-09-19tty: Char: mxser, add support for CP112ULJiri Slaby
Add support for MOXA:0x1120 pci device. It's a 2-port device and differs in no way from the others. So this turns out to be a trivial pci_device_id change. Increase also the version number. Signed-off-by: Jiri Slaby <jirislaby@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2009-09-19tty: riscom8, fix tty refcntJiri Slaby
Stanse found a tty refcnt leak on one fail path in rc_transmit. Fix that by jumping to the 'out' label. http://stanse.fi.muni.cz/ Signed-off-by: Jiri Slaby <jirislaby@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2009-09-19tty: riscom8, fix shutdown declarationJiri Slaby
tty_port_ops.shutdown takes only one parameter: tty port. Remove the second one and use port->tty where needed instead. Signed-off-by: Jiri Slaby <jirislaby@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2009-09-19TTY: fix typosAlan Stern
This patch (as1282) fixes some obvious typos in the TTY core. Signed-off-by: Alan Stern <stern@rowland.harvard.edu> CC: Alan Cox <alan@lxorguk.ukuu.org.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2009-09-19tty: Power: fix suspend vt regressionJiri Slaby
vt_waitactive no longer accepts console parameter as console-1 since commit "vt: add an event interface". It expects console number directly (as viewed by userspace -- counting from 1). Fix a deadlock suspend regression by redefining adding one to vt in vt_move_to_console. Signed-off-by: Jiri Slaby <jirislaby@gmail.com> Cc: Alan Cox <alan@linux.intel.com> Cc: Greg Kroah-Hartman <gregkh@suse.de> Cc: "Rafael J. Wysocki" <rjw@sisk.pl> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2009-09-19tty: vt: use printk_onceMarcin Slusarz
Signed-off-by: Marcin Slusarz <marcin.slusarz@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2009-09-19tty: handle VT specific compat ioctls in vt driverArnd Bergmann
The VT specific compat_ioctl handlers are the only ones in common code that require the BKL. Moving them into the vt driver lets us remove the BKL from the other handlers and cleans up the code. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2009-09-19n_tty: move echoctl check and clean up logicJoe Peterson
Check L_ECHOCTL before insertting a character in the echo buffer (rather than as the buffer is processed), to be more consistent with when all other L_ flags are checked. Also cleaned up the related logic. Note that this and the previous patch ("n_tty: honor opost flag for echoes") were verified together by the reporters of the bug that patch addresses (http://bugs.linuxbase.org/show_bug.cgi?id=2692), and the test now passes. Signed-off-by: Joe Peterson <joe@skyrush.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2009-09-19n_tty: honor opost flag for echoesJoe Peterson
Fixes the following bug: http://bugs.linuxbase.org/show_bug.cgi?id=2692 Causes processing of echoed characters (output from the echo buffer) to honor the O_OPOST flag, which is consistent with the old behavior. Note that this and the next patch ("n_tty: move echoctl check and clean up logic") were verified together by the bug reporters, and the test now passes. Signed-off-by: Joe Peterson <joe@skyrush.com> Cc: Linux Torvalds <torvalds@linux-foundation.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2009-09-19tty: USB serial termios bitsAlan Cox
Various drivers have hacks to mangle termios structures. This stems from the fact there is no nice setup hook for configuring the termios settings when the port is created Signed-off-by: Alan Cox <alan@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2009-09-19serial: move delta_msr_wait into the tty_portAlan Cox
This is used by various drivers not just serial and can be extracted as commonality Signed-off-by: Alan Cox <alan@linux.intel.com>
2009-09-19isicom: split the open method for the isicom deviceAlan Cox
Again moving towards being able to add a common open method Signed-off-by: Alan Cox <alan@linux.intel.com>
2009-09-19vt: add an activate and lockAlan Cox
X and other graphical interfaces need to be able to flip to a console and lock it into graphics mode without races. Signed-off-by: Alan Cox <alan@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2009-09-19vt: remove power stuff from kernel/powerAlan Cox
In the past someone gratuitiously borrowed chunks of kernel internal vt code and dumped them in kernel/power. They have all sorts of deep relations with the vt code so put them in the vt tree instead Signed-off-by: Alan Cox <alan@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2009-09-19vt: add an event interfaceAlan Cox
This is needed and requested in various forms for ConsoleKit, screenblank handling and the like so do the job with a single interface. Also build the interface so that unlike VT_WAITACTIVE and friends it won't miss events. FIXME: Should this be a waitactive ioctl or a new device file you can poll and read events from. We need the code anyway to fix up the existing broken wait for console switch logic but the ConsoleKit people would prefer the new device to the ioctl we have here Signed-off-by: Alan Cox <alan@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2009-09-19tty: make the kref destructor occur asynchronouslyAlan Cox
We want to be able to sleep in the destructor for USB at least. It isn't a hot path so just pushing it to a work queue doesn't really cause any difficulty. Signed-off-by: Alan Cox <alan@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2009-09-19cyclades: use the full port_close functionAlan Cox
Convert cyclades to use the full tty_port_close helper Signed-off-by: Alan Cox <alan@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2009-09-19tty: riscom8 kref and tty_port_closeAlan Cox
We need to kref this driver in order to use port_close Signed-off-by: Alan Cox <alan@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2009-09-19isicom: Split the close hardware bits outAlan Cox
Start to extract and build a model for a common tty_port_close() Signed-off-by: Alan Cox <alan@linux.intel.com>
2009-09-19mxser: Split close ready for a standard tty_port_close methodAlan Cox
Prepare for the tty_port_close function by splitting out methods Signed-off-by: Alan Cox <alan@linux.intel.com>
2009-09-19riscom8: split open and close methods upAlan Cox
Moving towards a tty_port method for open/close Signed-off-by: Alan Cox <alan@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2009-09-19tty: Add a full port_close functionAlan Cox
Now we are extracting out methods for shutdown and the like we can add a proper tty_port_close method that knows all the innards of the tty closing process and hides the lot from the caller. At some point in the future this will be paired with a similar open() helper and the drivers can stick to hardware management. Signed-off-by: Alan Cox <alan@linux.intel.com> Cc: stable <stable@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2009-09-19tty: Fix a typo noted in passingAlan Cox
Signed-off-by: Alan Cox <alan@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2009-09-19cyclades: remove more duplicated codeJiri Slaby
Remove duplicated code from cy_set_line_char. There were 2 if branches with same contents except flags. Branch only for the flags computation and use them in the only copy of the code. Signed-off-by: Jiri Slaby <jirislaby@gmail.com> Signed-off-by: Alan Cox <alan@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2009-09-19cyclades: introduce cyy_readb/writebJiri Slaby
Add helpers for io operations, so that we can eliminate huge amount of supporting code. It is now centralized in those helpers and used values are precomputed in the init phase. Signed-off-by: Jiri Slaby <jirislaby@gmail.com> Signed-off-by: Alan Cox <alan@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2009-09-19cyclades: tiocm cleanupJiri Slaby
- save one indent level by inverting !fw_loaded condition - read rs_status on Z and write it after we change all the flags, don't do that separately - remove Y inverted rts/dtr branching, precompute registers and use them Signed-off-by: Jiri Slaby <jirislaby@gmail.com> Signed-off-by: Alan Cox <alan@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2009-09-19cyclades: ioctls cleanupJiri Slaby
- add a cy_ prefix to functions with changed prototypes - cy_get_serial_info: initialize serial_struct by initializer, save a memset - inline simple functions (get_mon_info, {s,g}et_default_threshold, {s,g}et_default_timeout) directly in the ioctl handler - add a cy_cflags_changed helper to not copy its code by wait_event_interruptible - remove some ret_val = 0 assignments, it's preset to 0 - TIOCGICOUNT: don't do many put_user's, do one copy_to_user Signed-off-by: Jiri Slaby <jirislaby@gmail.com> Signed-off-by: Alan Cox <alan@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2009-09-19cyclades: merge cy_startup tailsJiri Slaby
There is a duplicated code for Y and Z in cy_startup, merge the paths. Signed-off-by: Jiri Slaby <jirislaby@gmail.com> Signed-off-by: Alan Cox <alan@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2009-09-19cyclades: use dtr_rts helpersJiri Slaby
For Z cards, use tty helpers for dtr_rts. If we did the same for Y cards, it will cause a deadlock, because cyy_dtr_rts takes a lock which we already hold. Instead, we introduce a Y helper expecting card lock to be held. It may then be called with set/clear masks from other places. Signed-off-by: Jiri Slaby <jirislaby@gmail.com> Signed-off-by: Alan Cox <alan@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2009-09-19cyclades: sleep instead busy-waitJiri Slaby
Avoid long busy loops (5 ms) which may be replaced by sleeps. Signed-off-by: Jiri Slaby <jirislaby@gmail.com> Signed-off-by: Alan Cox <alan@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2009-09-19cyclades: overall cleanupJiri Slaby
- remove changelog from the file. we don't care about ancient history - update copyright year - update version - constify some stuff - empty lines removal - unused variables and macros removal - remove some asm/ includes, they are sucked by linux/ variants Signed-off-by: Jiri Slaby <jirislaby@gmail.com> Signed-off-by: Alan Cox <alan@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2009-09-19cyclades: close cleanupJiri Slaby
Use new tty helpers for close, which allows much code removal. The only real change is locking. card_lock for protecting was used inappropriately (just to have a critical section, no matter which lock is used), so the change to port->lock is fine. Remove also useless debug printks while being there. Signed-off-by: Jiri Slaby <jirislaby@gmail.com> Signed-off-by: Alan Cox <alan@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2009-09-19cyclades: switch to tty_port_hangupJiri Slaby
Do not duplicate common tty_port_hangup code. Use it instead. Also do not unset ASYNC_NORMAL_ACTIVE and wake up from the tty_hangup() caller. It makes no sense since we don't check that flag in sleepers. tty_port_hangup() performed later will do the right job. Signed-off-by: Jiri Slaby <jirislaby@gmail.com> Signed-off-by: Alan Cox <alan@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2009-09-19cyclades: avoid addresses recomputationJiri Slaby
Don't fetch firmware address and recompute channel control on each port access. Precompute the values on init and use them later all the time. The same for board control. This simplify code and improves readability. Signed-off-by: Jiri Slaby <jirislaby@gmail.com> Signed-off-by: Alan Cox <alan@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2009-09-19cyclades: remove block_til_readyJiri Slaby
Use a tty_port common instead. This saves lots of .text and makes the code a lot more readable. This involves separation of a dtr_rts handling, next patches will use that to not duplicate the code all over the place. Signed-off-by: Jiri Slaby <jirislaby@gmail.com> Signed-off-by: Alan Cox <alan@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2009-09-19cyclades: add tty refcountingJiri Slaby
While this is not problem for Y card handlers (they are protected by card_lock), Z handlers and other functions may dereference NULL at any point after hangup/close. Even if (tty == NULL) was already performed in the handler. Note that it's not an issue for Y cards just for now. After switching to tty_port_close_* et al. this will be a problem. So add refcounting to them all. Also proc .show doesn't take a tty reference and it should (along with a ldisc one). While at it and changing prototypes (adding tty param), prepend cy_ to functions which don't have it yet. Signed-off-by: Jiri Slaby <jirislaby@gmail.com> Signed-off-by: Alan Cox <alan@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2009-09-19tty: includecheck fix: drivers/char, vt.cJaswinder Singh Rajput
fix the following 'make includecheck' warning: drivers/char/vt.c: linux/device.h is included more than once. Signed-off-by: Jaswinder Singh Rajput <jaswinderrajput@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2009-09-19tty-ldisc: get rid of tty_ldisc_try_get() helper functionLinus Torvalds
Now that the /proc/tty/ldiscs handling doesn't play games with 'struct ldisc' any more, the only remaining user of 'tty_ldisc_try_get()' is 'tty_ldisc_get()' (note the lack of 'try'). And we're actually much better off folding the logic directly into that file, since the 'try' part was always about trying to get the ldisc operations, not the ldisc itself: and making that explicit inside of 'tty_ldisc_get()' clarifies the whole semantics. Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> Cc: Alan Cox <alan@lxorguk.ukuu.org.uk> Cc: OGAWA Hirofumi <hirofumi@mail.parknet.co.jp>, Tested-by: Sergey Senozhatsky <sergey.senozhatsky@mail.by> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2009-09-19tty-ldisc: make /proc/tty/ldiscs use ldisc_ops instead of ldiscsLinus Torvalds
The /proc/tty/ldiscs file is totally and utterly un-interested in the "struct tty_ldisc" structures, and only cares about the underlying ldisc operations. So don't make it create a dummy 'struct ldisc' only to get a pointer to the operations, and then destroy it. Instead, we split up the function 'tty_ldisc_try_get()', and create a 'get_ldops()' helper that just looks up the ldisc operations based on the ldisc number. That makes the code simpler to read (smaller and more well-defined helper functions), and allows the /proc functions to avoid creating that useless dummy only to immediately free it again. Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> Tested-by: Sergey Senozhatsky <sergey.senozhatsky@mail.by> Cc: Alan Cox <alan@lxorguk.ukuu.org.uk> Cc: OGAWA Hirofumi <hirofumi@mail.parknet.co.jp> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2009-09-19Driver-Core: extend devnode callbacks to provide permissionsKay Sievers
This allows subsytems to provide devtmpfs with non-default permissions for the device node. Instead of the default mode of 0600, null, zero, random, urandom, full, tty, ptmx now have a mode of 0666, which allows non-privileged processes to access standard device nodes in case no other userspace process applies the expected permissions. This also fixes a wrong assignment in pktcdvd and a checkpatch.pl complain. Signed-off-by: Kay Sievers <kay.sievers@vrfy.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2009-09-19Merge branch 'acpica' into releaseLen Brown
2009-09-18Merge branch 'release' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux-2.6 * 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux-2.6: [IA64] Clean up linker script using standard macros. [IA64] Use standard macros for page-aligned data. [IA64] Use .ref.text, not .text.init for start_ap. [IA64] sgi-xp: fix printk format warnings [IA64] ioc4_serial: fix printk format warnings [IA64] mbcs: fix printk format warnings [IA64] pci_br, fix infinite loop in find_free_ate() [IA64] kdump: Short path to freeze CPUs [IA64] kdump: Try INIT regardless of [IA64] kdump: Mask INIT first in panic-kdump path [IA64] kdump: Don't return APs to SAL from kdump [IA64] kexec: Unregister MCA handler before kexec [IA64] kexec: Make INIT safe while transition to [IA64] kdump: Mask MCA/INIT on frozen cpus Fix up conflict in arch/ia64/kernel/vmlinux.lds.S as per Tony's suggestion.
2009-09-18pty_write: don't do a tty_wakeup() when the buffers are fullLinus Torvalds
Commit ac89a9174 ("pty: don't limit the writes to 'pty_space()' inside 'pty_write()'") removed the pty_space() checking, in order to let the regular tty buffer code limit the buffering itself. That was all good, but as a subtle side effect it meant that we'd be doing a tty_wakeup() even in the case where the buffers were all filled up, and didn't actually make any progress on the write. Which sounds innocuous, but it interacts very badly with the ppp_async code, which has an infinite loop in ppp_async_push() that tries to push out data to the tty. When we call tty_wakeup(), that loop ends up thinking that progress was made (see the subtle interactions between XMIT_WAKEUP and 'tty_stuffed' for details). End result: one unhappy ppp user. Fixed by noticing when tty_insert_flip_string() didn't actually do anything, and then not doing any more processing (including, very much not calling tty_wakeup()). Bisected-and-tested-by: Peter Volkov <pva@gentoo.org> Cc: stable@kernel.org (2.6.31) Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-09-17Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-2.6Linus Torvalds
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-2.6: sparc: Update defconfigs. sparc: Kill PROM console driver.
2009-09-17MIPS: hw_random: Add hardware RNG for Octeon SOCs.David Daney
Signed-off-by: David Daney <ddaney@caviumnetworks.com> Acked-by: Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2009-09-16Merge git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core-2.6Linus Torvalds
* git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core-2.6: Driver Core: devtmpfs - kernel-maintained tmpfs-based /dev debugfs: Modify default debugfs directory for debugging pktcdvd. debugfs: Modified default dir of debugfs for debugging UHCI. debugfs: Change debugfs directory of IWMC3200 debugfs: Change debuhgfs directory of trace-events-sample.h debugfs: Fix mount directory of debugfs by default in events.txt hpilo: add poll f_op hpilo: add interrupt handler hpilo: staging for interrupt handling driver core: platform_device_add_data(): use kmemdup() Driver core: Add support for compatibility classes uio: add generic driver for PCI 2.3 devices driver-core: move dma-coherent.c from kernel to driver/base mem_class: fix bug mem_class: use minor as index instead of searching the array driver model: constify attribute groups UIO: remove 'default n' from Kconfig Driver core: Add accessor for device platform data Driver core: move dev_get/set_drvdata to drivers/base/dd.c Driver core: add new device to bus's list before probing
2009-09-15sparc: Kill PROM console driver.David S. Miller
Many years ago when this driver was written, it had a use, but these days it's nothing but trouble and distributions should not enable it in any situation. Pretty much every console device a sparc machine could see has a bonafide real driver, making the PROM console hack unnecessary. If any new device shows up, we should write a driver instead of depending upon this crutch to save us. We've been able to take care of this even when no chip documentation exists (sunxvr500, sunxvr2500) so there are no excuses. Signed-off-by: David S. Miller <davem@davemloft.net>
2009-09-15Merge branch 'next' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc * 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc: (134 commits) powerpc/nvram: Enable use Generic NVRAM driver for different size chips powerpc/iseries: Fix oops reading from /proc/iSeries/mf/*/cmdline powerpc/ps3: Workaround for flash memory I/O error powerpc/booke: Don't set DABR on 64-bit BookE, use DAC1 instead powerpc/perf_counters: Reduce stack usage of power_check_constraints powerpc: Fix bug where perf_counters breaks oprofile powerpc/85xx: Fix SMP compile error and allow NULL for smp_ops powerpc/irq: Improve nanodoc powerpc: Fix some late PowerMac G5 with PCIe ATI graphics powerpc/fsl-booke: Use HW PTE format if CONFIG_PTE_64BIT powerpc/book3e: Add missing page sizes powerpc/pseries: Fix to handle slb resize across migration powerpc/powermac: Thermal control turns system off too eagerly powerpc/pci: Merge ppc32 and ppc64 versions of phb_scan() powerpc/405ex: support cuImage via included dtb powerpc/405ex: provide necessary fixup function to support cuImage powerpc/40x: Add support for the ESTeem 195E (PPC405EP) SBC powerpc/44x: Add Eiger AMCC (AppliedMicro) PPC460SX evaluation board support. powerpc/44x: Update Arches defconfig powerpc/44x: Update Arches dts ... Fix up conflicts in drivers/char/agp/uninorth-agp.c
2009-09-15mem_class: fix bugJin Dongming
When I build and boot -next on fedora 10, I can not login anymore. When I input the user name and password, the system does not output any message and requires user to input the user name and password again and again. I find the patch which caused this problem with "GIT BISECT" command. And the patch is commit 7c4b7daa1878972ed0137c95f23569124bd6e2b1 "mem_class: use minor as index instead of searching the array". Though I don't know the real reason why user could not login, I confirmed the patch I made as following could resolve the problem on fedora 10. Signed-off-by: Jin Dongming <jin.dongming@np.css.fujitsu.com> Acked-by: Kay Sievers <kay.sievers@vrfy.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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