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| author | Arnd Bergmann <arnd@arndb.de> | 2010-04-27 00:24:01 +0200 |
|---|---|---|
| committer | Frederic Weisbecker <fweisbec@gmail.com> | 2010-05-17 05:27:04 +0200 |
| commit | f4927c45beda9a70e5c3bda0bd9f12b4f713c00b (patch) | |
| tree | 18256d3dd635e931838e3d83b071ca5a1e61a163 /drivers/scsi/3w-sas.c | |
| parent | 16ef8def80ea97c3cacdcaa765bdf62b2d94f86d (diff) | |
| download | lwn-f4927c45beda9a70e5c3bda0bd9f12b4f713c00b.tar.gz lwn-f4927c45beda9a70e5c3bda0bd9f12b4f713c00b.zip | |
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-sas.c')
| -rw-r--r-- | drivers/scsi/3w-sas.c | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/drivers/scsi/3w-sas.c b/drivers/scsi/3w-sas.c index 54c5ffb1eaa1..8af380951f17 100644 --- a/drivers/scsi/3w-sas.c +++ b/drivers/scsi/3w-sas.c @@ -750,19 +750,22 @@ static void twl_load_sgl(TW_Device_Extension *tw_dev, TW_Command_Full *full_comm /* This function handles ioctl for the character device This interface is used by smartmontools open source software */ -static int twl_chrdev_ioctl(struct inode *inode, struct file *file, unsigned int cmd, unsigned long arg) +static long twl_chrdev_ioctl(struct file *file, unsigned int cmd, unsigned long arg) { long timeout; unsigned long *cpu_addr, data_buffer_length_adjusted = 0, flags = 0; dma_addr_t dma_handle; int request_id = 0; TW_Ioctl_Driver_Command driver_command; + struct inode *inode = file->f_dentry->d_inode; TW_Ioctl_Buf_Apache *tw_ioctl; TW_Command_Full *full_command_packet; TW_Device_Extension *tw_dev = twl_device_extension_list[iminor(inode)]; int retval = -EFAULT; void __user *argp = (void __user *)arg; + lock_kernel(); + /* Only let one of these through at a time */ if (mutex_lock_interruptible(&tw_dev->ioctl_lock)) { retval = -EINTR; @@ -858,6 +861,7 @@ out3: out2: mutex_unlock(&tw_dev->ioctl_lock); out: + unlock_kernel(); return retval; } /* End twl_chrdev_ioctl() */ @@ -884,7 +888,7 @@ out: /* File operations struct for character device */ static const struct file_operations twl_fops = { .owner = THIS_MODULE, - .ioctl = twl_chrdev_ioctl, + .unlocked_ioctl = twl_chrdev_ioctl, .open = twl_chrdev_open, .release = NULL }; |