linux-toradex.git/drivers/char/cs5535_gpio.c, branch v2.6.34.4 Linux kernel for Apalis and Colibri modules drivers: Remove BKL from cs5535_gpio 2009-10-14T15:36:48+00:00 Thomas Gleixner tglx@linutronix.de 2009-10-10T15:35:48+00:00 a7e63bb5f08378620d913824ab42e49027f22194 The big BKL pushdown added cycle_kernel_lock(). There is nothing to wait for in this driver. Remove it. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> LKML-Reference: <20091010153349.277882707@linutronix.de> 
The big BKL pushdown added cycle_kernel_lock(). There is nothing to
wait for in this driver. Remove it.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
LKML-Reference: <20091010153349.277882707@linutronix.de>
Add a bunch of cycle_kernel_lock() calls 2008-06-20T20:05:53+00:00 Jonathan Corbet corbet@lwn.net 2008-05-18T21:32:43+00:00 f2b9857eee17797541b845782ade4d7a9d50f843 All of the open() functions which don't need the BKL on their face may still depend on its acquisition to serialize opens against driver initialization. So make those functions acquire then release the BKL to be on the safe side. Signed-off-by: Jonathan Corbet <corbet@lwn.net> 
All of the open() functions which don't need the BKL on their face may
still depend on its acquisition to serialize opens against driver
initialization.  So make those functions acquire then release the BKL to be
on the safe side.

Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Add "no BKL needed" comments to several drivers 2008-06-20T20:05:50+00:00 Jonathan Corbet corbet@lwn.net 2008-05-16T19:40:30+00:00 d21c95c569c462da20d491b75d0a45bd70ddc1bf This documents the fact that somebody looked at the relevant open() functions and concluded that, due to their trivial nature, no locking was needed. Signed-off-by: Jonathan Corbet <corbet@lwn.net> 
This documents the fact that somebody looked at the relevant open()
functions and concluded that, due to their trivial nature, no locking was
needed.

Signed-off-by: Jonathan Corbet <corbet@lwn.net>
drivers: fix integer as NULL pointer warnings 2008-04-29T00:31:13+00:00 Harvey Harrison harvey.harrison@gmail.com 2008-04-28T23:50:04+00:00 a01e035ebb552223c03f2d9138ffc73f2d4d3965 Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> 
Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
gpio_cs5535: disable AUX on output 2007-12-05T17:21:20+00:00 Ben Gardner gardner.ben@gmail.com 2007-12-05T07:45:24+00:00 4670df831cb479ba57dd0fa0b8a9eb88cc7129be The AMD CS5535/CS5536 GPIO has two alternate output modes: AUX-1 and AUX-2. When either AUX is enabled, the cs5535_gpio driver cannot control the output. Some BIOS code for the Geode processor enables AUX-1 for GPIO-1, which configures it as the PC BEEP output. This patch will disable AUX-1 and AUX-2 when the user enables output. Signed-of-by: Ben Gardner <gardner.ben@gmail.com> Cc: Richard Knutsson <ricknu-0@student.ltu.se> 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> 
The AMD CS5535/CS5536 GPIO has two alternate output modes: AUX-1 and AUX-2.
When either AUX is enabled, the cs5535_gpio driver cannot control the
output.

Some BIOS code for the Geode processor enables AUX-1 for GPIO-1, which
configures it as the PC BEEP output.

This patch will disable AUX-1 and AUX-2 when the user enables output.

Signed-of-by: Ben Gardner <gardner.ben@gmail.com>
Cc: Richard Knutsson <ricknu-0@student.ltu.se>
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>
Char: cs5535_gpio, add MODULE_DEVICE_TABLE 2007-05-08T18:15:04+00:00 Jiri Slaby jirislaby@gmail.com 2007-05-08T07:27:07+00:00 524e6752912a891a396a9cf74c5d7d60fff5510a cs5535_gpio, add MODULE_DEVICE_TABLE Signed-off-by: Jiri Slaby <jirislaby@gmail.com> Cc: Ben Gardner <bgardner@wabtec.com> 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> 
cs5535_gpio, add MODULE_DEVICE_TABLE

Signed-off-by: Jiri Slaby <jirislaby@gmail.com>
Cc: Ben Gardner <bgardner@wabtec.com>
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>
[PATCH] struct path: convert char-drivers 2006-12-08T16:28:44+00:00 Josef Sipek jsipek@fsl.cs.sunysb.edu 2006-12-08T10:36:55+00:00 a7113a966241b700aecc7b8cb326cecb62e3c4b2 Signed-off-by: Josef Sipek <jsipek@fsl.cs.sunysb.edu> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org> 
Signed-off-by: Josef Sipek <jsipek@fsl.cs.sunysb.edu>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
[PATCH] make more file_operation structs static 2006-07-03T22:26:59+00:00 Arjan van de Ven arjan@infradead.org 2006-07-03T07:24:21+00:00 62322d2554d2f9680c8ace7bbf1f97d8fa84ad1a Mark the static struct file_operations in drivers/char as const. Making them const prevents accidental bugs, and moves them to the .rodata section so that they no longer do any false sharing; in addition with the proper debug option they are then protected against corruption.. [akpm@osdl.org: build fix] Signed-off-by: Arjan van de Ven <arjan@linux.intel.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org> 
Mark the static struct file_operations in drivers/char as const.  Making
them const prevents accidental bugs, and moves them to the .rodata section
so that they no longer do any false sharing; in addition with the proper
debug option they are then protected against corruption..

[akpm@osdl.org: build fix]
Signed-off-by: Arjan van de Ven <arjan@linux.intel.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
[PATCH] cs5535_gpio.c: call cdev_del() during module_exit to unmap kobject references and other cleanups 2006-04-20T14:54:03+00:00 Thayumanavar Sachithanantham thayumk@gmail.com 2006-04-20T09:43:15+00:00 0324680064fd89d6ad52e89a4ccf16dec3ea3caa During module unloading, cdev_del() must be called to unmap cdev related kobject references and other cleanups(such as inode->i_cdev being set to NULL) which prevents the OOPS upon subsequent loading, usage and unloading of modules(as seen in the mail thread http://marc.theaimsgroup.com/?l=linux-kernel&m=114533640609018&w=2). Also, remove unneeded test of gpio_base. Signed-off-by: Thayumanavar Sachithanantham <thayumk@gmail.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org> 
During module unloading, cdev_del() must be called to unmap cdev related
kobject references and other cleanups(such as inode->i_cdev being set to
NULL) which prevents the OOPS upon subsequent loading, usage and unloading
of modules(as seen in the mail thread
http://marc.theaimsgroup.com/?l=linux-kernel&m=114533640609018&w=2).

Also, remove unneeded test of gpio_base.

Signed-off-by: Thayumanavar Sachithanantham <thayumk@gmail.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
[PATCH] i386: GPIO driver for AMD CS5535/CS5536 2006-01-10T16:01:24+00:00 Ben Gardner gardner.ben@gmail.com 2006-01-10T04:51:29+00:00 e329113ca437e44ec399b7ffe114ed36e84ccf5e A simple driver for the CS5535 and CS5536 that allows a user-space program to manipulate GPIO pins. The CS5535/CS5536 chips are Geode processor companion devices. Signed-off-by: Ben Gardner <bgardner@wabtec.com> Signed-off-by: Richard Knutsson <ricknu-0@student.ltu.se> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org> 
A simple driver for the CS5535 and CS5536 that allows a user-space program
to manipulate GPIO pins.  The CS5535/CS5536 chips are Geode processor
companion devices.

Signed-off-by: Ben Gardner <bgardner@wabtec.com>
Signed-off-by: Richard Knutsson <ricknu-0@student.ltu.se>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>