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path: root/drivers/char
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2007-02-12[PATCH] mark struct file_operations const 3Arjan van de Ven
Many struct file_operations in the kernel can be "const". Marking them const moves these to the .rodata section, which avoids false sharing with potential dirty data. In addition it'll catch accidental writes at compile time to these shared resources. 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>
2007-02-12[PATCH] tty: update the tty layer to work with struct pidEric W. Biederman
Of kernel subsystems that work with pids the tty layer is probably the largest consumer. But it has the nice virtue that the assiation with a session only lasts until the session leader exits. Which means that no reference counting is required. So using struct pid winds up being a simple optimization to avoid hash table lookups. In the long term the use of pid_nr also ensures that when we have multiple pid spaces mixed everything will work correctly. Signed-off-by: Eric W. Biederman <eric@maxwell.lnxi.com> Cc: Alan Cox <alan@lxorguk.ukuu.org.uk> Cc: Oleg Nesterov <oleg@tv-sign.ru> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-02-12[PATCH] pid: replace is_orphaned_pgrp with is_current_pgrp_orphanedEric W. Biederman
Every call to is_orphaned_pgrp passed in process_group(current) which is racy with respect to another thread changing our process group. It didn't bite us because we were dealing with integers and the worse we would get would be a stale answer. In switching the checks to use struct pid to be a little more efficient and prepare the way for pid namespaces this race became apparent. So I simplified the calls to the more specialized is_current_pgrp_orphaned so I didn't have to worry about making logic changes to avoid the race. Signed-off-by: Eric W. Biederman <ebiederm@xmission.com> Cc: Alan Cox <alan@lxorguk.ukuu.org.uk> Cc: Oleg Nesterov <oleg@tv-sign.ru> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-02-12[PATCH] pid: make session_of_pgrp use struct pid instead of pid_tEric W. Biederman
To properly implement a pid namespace I need to deal exclusively in terms of struct pid, because pid_t values become ambiguous. To this end session_of_pgrp is transformed to take and return a struct pid pointer. To avoid the need to worry about reference counting I now require my caller to hold the appropriate locks. Leaving callers repsonsible for increasing the reference count if they need access to the result outside of the locks. Since session_of_pgrp currently only has one caller and that caller simply uses only test the result for equality with another process group, the locking change means I don't actually have to acquire the tasklist_lock at all. tiocspgrp is also modified to take and release the lock. The logic there is a little more complicated but nothing I won't need when I convert pgrp of a tty to a struct pid pointer. Signed-off-by: Eric W. Biederman <ebiederm@xmission.com> Cc: Alan Cox <alan@lxorguk.ukuu.org.uk> Cc: Oleg Nesterov <oleg@tv-sign.ru> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-02-12[PATCH] tty: fix the locking for signal->session in disassociate_cttyEric W. Biederman
commit 24ec839c431eb79bb8f6abc00c4e1eb3b8c4d517 while fixing the locking for signal->tty got the locking wrong for signal->session. This places our accesses of signal->session back under the tasklist_lock where they belong. Signed-off-by: Eric W. Biederman <ebiederm@xmission.com> Cc: Alan Cox <alan@lxorguk.ukuu.org.uk> Cc: Oleg Nesterov <oleg@tv-sign.ru> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-02-12[PATCH] tty: clarify disassociate_cttyEric W. Biederman
The code to look at tty_old_pgrp and send SIGHUP and SIGCONT when it is present only executes when disassociate_ctty is called from do_exit. Make this clear by adding an explict on_exit check, and explicitly setting tty_old_pgrp to 0. In addition fix the locking by reading tty_old_pgrp under the siglock. Signed-off-by: Eric W. Biederman <ebiederm@xmission.com> Cc: Alan Cox <alan@lxorguk.ukuu.org.uk> Cc: Oleg Nesterov <oleg@tv-sign.ru> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-02-12[PATCH] tty: make __proc_set_tty staticEric W. Biederman
The aim of this patch set is to start wrapping up the struct pid conversions. As such this patchset culminates with the removal of kill_pg, kill_pg_info, __kill_pg_info, do_each_task_pid, and while_each_task_pid. kill_proc, daemonize, and kernel_thread are still in my sights but there is still work to get to them. The first three are basic cleanups around disassociate_ctty, while working on converting it I found several issues. tty_old_pgrp can be a tricky concept to wrap your head around. 1 tty: Make __proc_set_tty static. 2 tty: Clarify disassociate_ctty 3 tty: Fix the locking for signal->session in disassociate_ctty These just stop using the old helper functions. 4 signal: Use kill_pgrp not kill_pg in the sunos compatibility code. 5 signal: Rewrite kill_something_info so it uses newer helpers. Then the grind to convert the tty layer and all of it's helper functions to struct pid. 6 pid: Make session_of_pgrp use struct pid instead of pid_t. 7 pid: Use struct pid for talking about process groups in exit.c 8 pid: Replace is_orphaned_pgrp with is_current_pgrp_orphaned 9 tty: Update the tty layer to work with struct pid. A final helper function update. 10 pid: Replace do/while_each_task_pid with do/while_each_pid_task And the removal of the functions that are now unused. 11 pid: Remove now unused do_each_task_pid and while_each_task_pid 12 pid: Remove the now unused kill_pg kill_pg_info and __kill_pg_info All of these should be fairly simple and to the point. This patch: Currently all users of __proc_set_tty are in tty_io.c so make the function static. Signed-off-by: Eric W. Biederman <ebiederm@xmission.com> Cc: Alan Cox <alan@lxorguk.ukuu.org.uk> Cc: Oleg Nesterov <oleg@tv-sign.ru> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-02-12[PATCH] DS1302: local_irq_disable() is redundant after local_irq_save()Jiri Kosina
drivers/char/ds1302.c::get_rtc_time() contains local_irq_disable() call after local_irq_save(). This looks redundant. drivers/char/ds1302.c::rtc_ioctl() contains local_irq_disable() call after local_irq_save(). This looks redundant. 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>
2007-02-12[PATCH] Char: timers cleanupJiri Slaby
- Use timer macros to set function and data members and to modify expiration time. - Use DEFINE_TIMER for global timers and do not init them at run-time in these cases. - del_timer_sync is common in most cases -- we want to wait for timer function if it's still running. Signed-off-by: Jiri Slaby <jirislaby@gmail.com> Cc: Dave Airlie <airlied@linux.ie> Cc: David Woodhouse <dwmw2@infradead.org> Cc: Dominik Brodowski <linux@dominikbrodowski.net> Cc: Alessandro Zummo <a.zummo@towertech.it> Cc: Paul Fulghum <paulkf@microgate.com> Cc: Kylene Jo Hall <kjhall@us.ibm.com> Cc: Wim Van Sebroeck <wim@iguana.be> Acked-by: Dmitry Torokhov <dtor@mail.ru> (Input bits) Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-02-12[PATCH] Char: specialix, isr have 2 paramsJiri Slaby
specialix, isr have 2 params pt_regs are no longer the third parameter of isr, call sx_interrupt without it. Signed-off-by: Jiri Slaby <jirislaby@gmail.com> Cc: <stable@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-02-12[PATCH] Char: cyclades, use pci_device_idJiri Slaby
Use pci_device_id struct instead of ushort array. Add MODULE_DEVICE_TABLE. Signed-off-by: Jiri Slaby <jirislaby@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-02-12[PATCH] Char: use more PCI_DEVICE macroJiri Slaby
Use more PCI_DEVICE macro Signed-off-by: Jiri Slaby <jirislaby@gmail.com> Acked-by: Wim Van Sebroeck <wim@iguana.be> (alim7101_wdt.c part) Cc: Michael Buesch <mb@bu3sch.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-02-11Merge 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: Input: remove scan_keyb driver Input: i8042 - fix AUX IRQ delivery check Input: wistron - add support for Fujitsu-Siemens Amilo D88x0 Input: inport - use correct config option for ATIXL Input: HIL - handle erros from input_register_device() Input: tsdev - schedule removal Input: add Atlas button driver Input: ads7846 - be more compatible with the hwmon framework Input: ads7846 - detect pen up from GPIO state Input: ads7846 - select correct SPI mode Input: ads7846 - switch to using hrtimer Input: ads7846 - optionally leave Vref on during differential measurements Input: ads7846 - pluggable filtering logic Input: gpio-keys - keyboard driver for GPIO buttons Input: hid-ff - add support for Logitech Momo racing wheel Input: i8042 - really suppress ACK/NAK during panic blink Input: pc110pad - return proper error
2007-02-11[PATCH] CHAR-Amiserial: turn local_save_flags() + local_irq_disable() into ↵Jiri Kosina
local_irq_save() drivers/char/amiserial.c::rs_write() contains local_irq_disable() after local_save_flags(). Turn it into local_irq_save(). 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>
2007-02-11[PATCH] tty: cleanup release_memChristoph Hellwig
release_mem contains two copies of exactly the same code. Refactor these into a new helper, release_tty. The only change in behaviour is that the driver reference count is now decremented after the master tty has been freed instead of before. [penberg@cs.helsinki.fi: fix use-after-free in release_tty.] Cc: Alan Cox <alan@redhat.com> Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-02-11[PATCH] mxser: remove useless fieldsCedric Le Goater
the session and pgrp fields in mxser_struct are unused. Signed-off-by: Cedric Le Goater <clg@fr.ibm.com> Cc: Jiri Slaby <jirislaby@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-02-11[PATCH] seq_file conversion: toshiba.cAlexey Dobriyan
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Cc: Dmitry Torokhov <dtor_core@ameritech.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-02-11[PATCH] raw: don't allow the creation of a raw device with minor number 0Jeff Moyer
Minor number 0 (under the raw major) is reserved for the rawctl device file, which is used to query, set, and unset raw device bindings. However, the ioctl interface does not protect the user from specifying a raw device with minor number 0: $ sudo ./raw /dev/raw/raw0 /dev/VolGroup00/swap /dev/raw/raw0: bound to major 253, minor 2 $ ls -l /dev/rawctl ls: /dev/rawctl: No such file or directory $ ls -l /dev/raw/raw0 crw------- 1 root root 162, 0 Jan 12 10:51 /dev/raw/raw0 $ sudo ./raw -qa Cannot open master raw device '/dev/rawctl' (No such file or directory) As you can see, this prevents any further raw operations from succeeding. The fix (from Steve Fernandez) is quite simple--do not allow the allocation of minor number 0. Signed-off-by: Jeff Moyer <jmoyer@redhat.com> Cc: Steven Fernandez <sfernand@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-02-11[PATCH] tty: improve encode_baud_rate logicAlan Cox
Mostly so people can see the work in progress. This enhances the encode function which isn't currently used in the base tree but is when using some of the testing tty patches. This resolves a problem with some hardware where applications got confusing information from the tty ioctls. Correct but confusing. In some situations asking for, say, 9600 baud actually gets you 9595 baud or similar near-miss values. With the old code this meant that a request for B9600 got a return of BOTHER, 9595 which programs interpreted as a failure. The new code now works on the following basis - If you ask for specific rate via BOTHER, you get a precise return - If you ask for a standard Bfoo rate and the result is close you get a Bfoo return - If you ask for a standard Bfoo rate and get something way off you get a BOTHER/rate return This seems to fix up the cases I've found where this broke compatibility. Signed-off-by: Alan Cox <alan@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-02-11[PATCH] proc: remove useless (and buggy) ->nlink settingsAlexey Dobriyan
Bug: pnx8550 code creates directory but resets ->nlink to 1. create_proc_entry() et al will correctly set ->nlink for you. Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Paul Mackerras <paulus@samba.org> Cc: Jeff Dike <jdike@addtoit.com> Cc: Corey Minyard <minyard@acm.org> Cc: Alan Cox <alan@lxorguk.ukuu.org.uk> Cc: Kyle McMartin <kyle@mcmartin.ca> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: Greg KH <greg@kroah.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-02-11[PATCH] IPMI: Fix some RCU problemsCorey Minyard
Fix some RCU problem pointed out by Paul McKenney of IBM. These are: The wholesale move of the command receivers list into a new list was not safe because the list will point to the new tail during a traversal, so the traversal will never end on a reader if this happens during a read. Memory barriers were needed to handle proper ordering of the setting of the IPMI interface as valid. Readers might not see proper ordering of data otherwise. In ipmi_smi_watcher_register(), the use of the _rcu suffix on the list is unnecessary. This require the list_splice_init_rcu() patch previously posted. Signed-off-by: Corey Minyard <minyard@acm.org> Cc: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-02-11[PATCH] Char: moxa, pci probingJiri Slaby
Alter the driver to use the pci probing. Signed-off-by: Jiri Slaby <jirislaby@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-02-11[PATCH] Char: moxa, pci_probing prepareJiri Slaby
- change pci conf prototype and rename it to moxa_pci_probe - move some code to moxa_pci_probe - create moxa_pci_remove Signed-off-by: Jiri Slaby <jirislaby@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-02-11[PATCH] Char: moxa, remove useless variablesJiri Slaby
Remove temporary or once used variables, that can be defined locally to save some bytes. Signed-off-by: Jiri Slaby <jirislaby@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-02-11[PATCH] Char: moxa, variables cleanupJiri Slaby
- rename moxaChannels to moxa_port - rename moxa_str to moxa_ports - move board global variables into moxa_board - move port global variables into moxa_port Signed-off-by: Jiri Slaby <jirislaby@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-02-11[PATCH] Char: moxa, remove moxa_pci_devinfoJiri Slaby
Nothing is used from this struct but *pdev. Remove it and store only pdev. Signed-off-by: Jiri Slaby <jirislaby@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-02-11[PATCH] Char: moxa, use del_timer_syncJiri Slaby
Use del_timer_sync in most timer deletions, we don't want to oops in the timer function. Signed-off-by: Jiri Slaby <jirislaby@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-02-11[PATCH] Char: moxa, macros cleanupJiri Slaby
Remove yet defined or unused macros and whitespace cleanup around the rest. Signed-off-by: Jiri Slaby <jirislaby@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-02-11[PATCH] Char: moxa, eliminate typedefsJiri Slaby
Do not use typedefs, use directly struct <something> instead. Signed-off-by: Jiri Slaby <jirislaby@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-02-11[PATCH] Char: moxa, use PCI_DEVICEJiri Slaby
Use PCI_DEVICE macro in pci_device_id list. Signed-off-by: Jiri Slaby <jirislaby@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-02-11[PATCH] Char: moxa, devids cleanupJiri Slaby
Move them to pci_ids.h Signed-off-by: Jiri Slaby <jirislaby@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-02-11[PATCH] Char: moxa, remove unused functionsJiri Slaby
Remove ifdeffed functions and cleanup comments including too long license terms. Signed-off-by: Jiri Slaby <jirislaby@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-02-11[PATCH] Char: moxa, remove hangup bottomhalfJiri Slaby
Call tty_hangup directly, we do not need a bottomhalf for this. Signed-off-by: Jiri Slaby <jirislaby@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-02-11[PATCH] Char: moxa, timers cleanupJiri Slaby
Use kernel macros and functions for timer encapsulation -- do not access fileds directly. Also del_timer on inactive is legal, so that noting if it runs is senseless, delete these variables. Signed-off-by: Jiri Slaby <jirislaby@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-02-11[PATCH] Char: moxa, do not initialize global staticJiri Slaby
Remove useless initialization of variables a) statically b) dynamically at module_init c) dynamically after kzalloc (those with '= 0/NULL') Signed-off-by: Jiri Slaby <jirislaby@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-02-11[PATCH] Char: moxa, remove unused allocated pageJiri Slaby
moxaXmitBuff is almost unused -- only one byte from the whole PAGE_SIZE bytes is used. Do not alloc so much space for almost anything. Also remove lock protecting this page allocation. Signed-off-by: Jiri Slaby <jirislaby@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-02-11[PATCH] Char: mxser_new, fix sparse warningJiri Slaby
Feed NULL instead of 0 where pointer is expected. Signed-off-by: Jiri Slaby <jirislaby@gmail.com> Cc: <osv@javad.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-02-11[PATCH] Char: mxser_new, lock count and flagsJiri Slaby
Both open count and INITIALIZED flag should be changed under lock. Signed-off-by: Jiri Slaby <jirislaby@gmail.com> Cc: <osv@javad.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-02-11[PATCH] Char: mxser_new, do not null driver_dataJiri Slaby
driver_data are initialzed to NULL from tty layer, no need to do it in the driver. In this case it cases oops, since driver_data may be NULL for a short while for another closing process. Signed-off-by: Jiri Slaby <jirislaby@gmail.com> Cc: <osv@javad.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-02-11[PATCH] Char: mxser_new, upgrade to 1.9.15Jiri Slaby
- allow special rates - break when bad status Signed-off-by: Jiri Slaby <jirislaby@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-02-11[PATCH] Char: mxser_new, do not put pdevJiri Slaby
We don't call pci_dev_get, so do not call pci_dev_put in the pci release function. Signed-off-by: Jiri Slaby <jirislaby@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-02-11[PATCH] Char: mxser_new, fix twice resource releasingJiri Slaby
Because brd->info is not NULLed, resources are released twice. NULL it in pci_remove function. Also take care of retval and releasing in pci_probe -- mxser_initbrd alreasy releases resource, do not do it again in fail path in probe function. Cc: Sergei Organov <osv@javad.com> Signed-off-by: Jiri Slaby <jirislaby@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-02-11[PATCH] Char: mxser_new, less loops in isrJiri Slaby
Loop only 100^2 times, not 99999^2 times in isr (at most). Signed-off-by: Jiri Slaby <jirislaby@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-02-11[PATCH] Char: mxser_new, header file cleanupJiri Slaby
- Remove no longer used macros - Move some macros from the header to the code - Remove c++ comments - Align backslashes to one column Signed-off-by: Jiri Slaby <jirislaby@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-02-11[PATCH] Char: mxser_new, alter locking in isrJiri Slaby
Avoid oopsing when stress-testing open/close -- port->tty is NULL sometimes, but is expected to be non-NULL, since dereferencing. Receive/transmit chars iff ASYNC_CLOSING is not set and ASYNC_INITIALIZED is set. Thanks Sergei for pointing this out and testing. Cc: Sergei Organov <osv@javad.com> Signed-off-by: Jiri Slaby <jirislaby@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-02-11[PATCH] Char: mxser_new, clean request_irq callJiri Slaby
We always set ASYNC_SHARE_IRQ, so do not test against this flag and request shared irq directly. Also remove nonsense comment. Signed-off-by: Jiri Slaby <jirislaby@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-02-11[PATCH] Char: mxser_new, remove tty_wakeup bottomhalfJiri Slaby
It's safe to call tty_wakeup from irq context. Do not schedule it for later calling. Signed-off-by: Jiri Slaby <jirislaby@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-02-11[PATCH] Char: mxser, obsolete old, nonexperimental newJiri Slaby
Mark v 1.x as obsolete and v 2.x as non-experimental in Kconfig. Signed-off-by: Jiri Slaby <jirislaby@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-02-11[PATCH] Char: mxser_new, remove unused stuffJiri Slaby
- nobody waits on close_wait - ASYNC_SPLIT_TERMIOS is not set by anybody, so do not test this flag - process session and pgrp are useless information Signed-off-by: Jiri Slaby <jirislaby@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-02-11[PATCH] Char: n_r3964, cleanupJiri Slaby
- Lindent the code - allow semicolons after macros by 'do {} while (0)' - eliminate C++ comments Signed-off-by: Jiri Slaby <jirislaby@gmail.com> Cc: David Woodhouse <dwmw2@infradead.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>