diff options
| author | Arnd Bergmann <arnd@arndb.de> | 2010-04-27 02:24:01 +0400 |
|---|---|---|
| committer | Frederic Weisbecker <fweisbec@gmail.com> | 2010-05-17 07:27:04 +0400 |
| commit | f4927c45beda9a70e5c3bda0bd9f12b4f713c00b (patch) | |
| tree | 18256d3dd635e931838e3d83b071ca5a1e61a163 /drivers/scsi/3w-xxxx.c | |
| parent | 16ef8def80ea97c3cacdcaa765bdf62b2d94f86d (diff) | |
| download | linux-f4927c45beda9a70e5c3bda0bd9f12b4f713c00b.tar.xz | |
scsi: Push down BKL into ioctl functions
Push down the bkl into ioctl functions on the scsi layer.
[jkacur: Forward declaration missing ';'.
Conflicting declaraction in megaraid.h changed
Fixed missing inodes declarations]
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: John Kacur <jkacur@redhat.com>
Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
Diffstat (limited to 'drivers/scsi/3w-xxxx.c')
| -rw-r--r-- | drivers/scsi/3w-xxxx.c | 11 |
1 files changed, 8 insertions, 3 deletions
diff --git a/drivers/scsi/3w-xxxx.c b/drivers/scsi/3w-xxxx.c index 5faf903ca8c8..608f3b28b25e 100644 --- a/drivers/scsi/3w-xxxx.c +++ b/drivers/scsi/3w-xxxx.c @@ -880,7 +880,7 @@ static int tw_allocate_memory(TW_Device_Extension *tw_dev, int size, int which) } /* End tw_allocate_memory() */ /* This function handles ioctl for the character device */ -static int tw_chrdev_ioctl(struct inode *inode, struct file *file, unsigned int cmd, unsigned long arg) +static long tw_chrdev_ioctl(struct file *file, unsigned int cmd, unsigned long arg) { int request_id; dma_addr_t dma_handle; @@ -888,6 +888,7 @@ static int tw_chrdev_ioctl(struct inode *inode, struct file *file, unsigned int unsigned long flags; unsigned int data_buffer_length = 0; unsigned long data_buffer_length_adjusted = 0; + struct inode *inode = file->f_dentry->d_inode; unsigned long *cpu_addr; long timeout; TW_New_Ioctl *tw_ioctl; @@ -898,9 +899,12 @@ static int tw_chrdev_ioctl(struct inode *inode, struct file *file, unsigned int dprintk(KERN_WARNING "3w-xxxx: tw_chrdev_ioctl()\n"); + lock_kernel(); /* Only let one of these through at a time */ - if (mutex_lock_interruptible(&tw_dev->ioctl_lock)) + if (mutex_lock_interruptible(&tw_dev->ioctl_lock)) { + unlock_kernel(); return -EINTR; + } /* First copy down the buffer length */ if (copy_from_user(&data_buffer_length, argp, sizeof(unsigned int))) @@ -1029,6 +1033,7 @@ out2: dma_free_coherent(&tw_dev->tw_pci_dev->dev, data_buffer_length_adjusted+sizeof(TW_New_Ioctl) - 1, cpu_addr, dma_handle); out: mutex_unlock(&tw_dev->ioctl_lock); + unlock_kernel(); return retval; } /* End tw_chrdev_ioctl() */ @@ -1051,7 +1056,7 @@ static int tw_chrdev_open(struct inode *inode, struct file *file) /* File operations struct for character device */ static const struct file_operations tw_fops = { .owner = THIS_MODULE, - .ioctl = tw_chrdev_ioctl, + .unlocked_ioctl = tw_chrdev_ioctl, .open = tw_chrdev_open, .release = NULL }; |