diff options
| author | Jonathan Corbet <corbet@lwn.net> | 2008-05-18 21:32:43 (GMT) |
|---|---|---|
| committer | Jonathan Corbet <corbet@lwn.net> | 2008-06-20 20:05:53 (GMT) |
| commit | f2b9857eee17797541b845782ade4d7a9d50f843 (patch) | |
| tree | 914a00afee2ff953199f99f7cf869e3fd83b36bd /arch/cris/arch-v10 | |
| parent | 0b2806768899dba5967bcd4a3b93eaed9a1dc4f3 (diff) | |
| download | linux-fsl-qoriq-f2b9857eee17797541b845782ade4d7a9d50f843.tar.xz | |
Add a bunch of cycle_kernel_lock() calls
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>
Diffstat (limited to 'arch/cris/arch-v10')
| -rw-r--r-- | arch/cris/arch-v10/drivers/eeprom.c | 4 | ||||
| -rw-r--r-- | arch/cris/arch-v10/drivers/i2c.c | 2 |
2 files changed, 4 insertions, 2 deletions
diff --git a/arch/cris/arch-v10/drivers/eeprom.c b/arch/cris/arch-v10/drivers/eeprom.c index 40c6fe4..1f2ae90 100644 --- a/arch/cris/arch-v10/drivers/eeprom.c +++ b/arch/cris/arch-v10/drivers/eeprom.c @@ -28,6 +28,7 @@ #include <linux/init.h> #include <linux/delay.h> #include <linux/interrupt.h> +#include <linux/smp_lock.h> #include <linux/wait.h> #include <asm/uaccess.h> #include "i2c.h" @@ -375,10 +376,9 @@ int __init eeprom_init(void) } /* Opens the device. */ -/* BKL not needed: no global resources accessed */ static int eeprom_open(struct inode * inode, struct file * file) { - + cycle_kernel_lock(); if(iminor(inode) != EEPROM_MINOR_NR) return -ENXIO; if(imajor(inode) != EEPROM_MAJOR_NR) diff --git a/arch/cris/arch-v10/drivers/i2c.c b/arch/cris/arch-v10/drivers/i2c.c index d6d2206..2797e67 100644 --- a/arch/cris/arch-v10/drivers/i2c.c +++ b/arch/cris/arch-v10/drivers/i2c.c @@ -15,6 +15,7 @@ #include <linux/module.h> #include <linux/sched.h> #include <linux/slab.h> +#include <linux/smp_lock.h> #include <linux/errno.h> #include <linux/kernel.h> #include <linux/fs.h> @@ -566,6 +567,7 @@ i2c_readreg(unsigned char theSlave, unsigned char theReg) static int i2c_open(struct inode *inode, struct file *filp) { + cycle_kernel_lock(); return 0; } |