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| author | Jonathan Corbet <corbet@lwn.net> | 2008-05-18 15:32:43 -0600 |
|---|---|---|
| committer | Jonathan Corbet <corbet@lwn.net> | 2008-06-20 14:05:53 -0600 |
| commit | f2b9857eee17797541b845782ade4d7a9d50f843 (patch) | |
| tree | 914a00afee2ff953199f99f7cf869e3fd83b36bd /drivers/scsi/3w-xxxx.c | |
| parent | 0b2806768899dba5967bcd4a3b93eaed9a1dc4f3 (diff) | |
| download | kernel_samsung_smdk4412-f2b9857eee17797541b845782ade4d7a9d50f843.tar.gz kernel_samsung_smdk4412-f2b9857eee17797541b845782ade4d7a9d50f843.tar.bz2 kernel_samsung_smdk4412-f2b9857eee17797541b845782ade4d7a9d50f843.zip | |
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 'drivers/scsi/3w-xxxx.c')
| -rw-r--r-- | drivers/scsi/3w-xxxx.c | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/drivers/scsi/3w-xxxx.c b/drivers/scsi/3w-xxxx.c index bbff029536e..a0537f09aa2 100644 --- a/drivers/scsi/3w-xxxx.c +++ b/drivers/scsi/3w-xxxx.c @@ -198,6 +198,7 @@ #include <linux/module.h> #include <linux/reboot.h> +#include <linux/smp_lock.h> #include <linux/spinlock.h> #include <linux/interrupt.h> #include <linux/moduleparam.h> @@ -1027,12 +1028,12 @@ out: } /* End tw_chrdev_ioctl() */ /* This function handles open for the character device */ -/* NOTE that this function races with remove - adding BKL - won't help */ +/* NOTE that this function races with remove. */ static int tw_chrdev_open(struct inode *inode, struct file *file) { unsigned int minor_number; + cycle_kernel_lock(); dprintk(KERN_WARNING "3w-xxxx: tw_ioctl_open()\n"); minor_number = iminor(inode); |