diff options
author | Linus Torvalds <torvalds@linux-foundation.org> | 2008-07-14 21:48:31 (GMT) |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2008-07-14 21:48:31 (GMT) |
commit | d1794f2c5b5817eb79ccc5e00701ca748d1b073a (patch) | |
tree | 5a4c98e694e88a8c82f342d0cc9edb2a4cbbef36 /drivers/scsi/sg.c | |
parent | a41eebab7537890409ea9dfe0fcda9b5fbdb090d (diff) | |
parent | 2fceef397f9880b212a74c418290ce69e7ac00eb (diff) | |
download | linux-d1794f2c5b5817eb79ccc5e00701ca748d1b073a.tar.xz |
Merge branch 'bkl-removal' of git://git.lwn.net/linux-2.6
* 'bkl-removal' of git://git.lwn.net/linux-2.6: (146 commits)
IB/umad: BKL is not needed for ib_umad_open()
IB/uverbs: BKL is not needed for ib_uverbs_open()
bf561-coreb: BKL unneeded for open()
Call fasync() functions without the BKL
snd/PCM: fasync BKL pushdown
ipmi: fasync BKL pushdown
ecryptfs: fasync BKL pushdown
Bluetooth VHCI: fasync BKL pushdown
tty_io: fasync BKL pushdown
tun: fasync BKL pushdown
i2o: fasync BKL pushdown
mpt: fasync BKL pushdown
Remove BKL from remote_llseek v2
Make FAT users happier by not deadlocking
x86-mce: BKL pushdown
vmwatchdog: BKL pushdown
vmcp: BKL pushdown
via-pmu: BKL pushdown
uml-random: BKL pushdown
uml-mmapper: BKL pushdown
...
Diffstat (limited to 'drivers/scsi/sg.c')
-rw-r--r-- | drivers/scsi/sg.c | 16 |
1 files changed, 13 insertions, 3 deletions
diff --git a/drivers/scsi/sg.c b/drivers/scsi/sg.c index fe694f0..fccd2e8 100644 --- a/drivers/scsi/sg.c +++ b/drivers/scsi/sg.c @@ -49,6 +49,7 @@ static int sg_version_num = 30534; /* 2 digits for each component */ #include <linux/delay.h> #include <linux/scatterlist.h> #include <linux/blktrace_api.h> +#include <linux/smp_lock.h> #include "scsi.h" #include <scsi/scsi_dbg.h> @@ -227,19 +228,26 @@ sg_open(struct inode *inode, struct file *filp) int res; int retval; + lock_kernel(); nonseekable_open(inode, filp); SCSI_LOG_TIMEOUT(3, printk("sg_open: dev=%d, flags=0x%x\n", dev, flags)); sdp = sg_get_dev(dev); - if ((!sdp) || (!sdp->device)) + if ((!sdp) || (!sdp->device)) { + unlock_kernel(); return -ENXIO; - if (sdp->detached) + } + if (sdp->detached) { + unlock_kernel(); return -ENODEV; + } /* This driver's module count bumped by fops_get in <linux/fs.h> */ /* Prevent the device driver from vanishing while we sleep */ retval = scsi_device_get(sdp->device); - if (retval) + if (retval) { + unlock_kernel(); return retval; + } if (!((flags & O_NONBLOCK) || scsi_block_when_processing_errors(sdp->device))) { @@ -295,10 +303,12 @@ sg_open(struct inode *inode, struct file *filp) retval = -ENOMEM; goto error_out; } + unlock_kernel(); return 0; error_out: scsi_device_put(sdp->device); + unlock_kernel(); return retval; } |