aac_mutex was used to create protect the ioctl path for only the compat path, it would be make more sense to place mutex in aac_do_ioctl, which is the main ioctl function call that handles all ioctl commands.
Created new mutex ioctl_mutex in struct aac_dev to protect switch case in aac_do_ioctl and removed aac_mutex from aac_cfg_ioctl and aac_compat_do_ioctl Signed-off-by: Raghava Aditya Renukunta <[email protected]> --- drivers/scsi/aacraid/aacraid.h | 1 + drivers/scsi/aacraid/commctrl.c | 4 ++++ drivers/scsi/aacraid/linit.c | 12 ++---------- 3 files changed, 7 insertions(+), 10 deletions(-) diff --git a/drivers/scsi/aacraid/aacraid.h b/drivers/scsi/aacraid/aacraid.h index 2916288..75bc65e 100644 --- a/drivers/scsi/aacraid/aacraid.h +++ b/drivers/scsi/aacraid/aacraid.h @@ -1124,6 +1124,7 @@ struct aac_dev struct fib *free_fib; spinlock_t fib_lock; + struct mutex ioctl_mutex; struct aac_queue_block *queues; /* * The user API will use an IOCTL to register itself to receive diff --git a/drivers/scsi/aacraid/commctrl.c b/drivers/scsi/aacraid/commctrl.c index 54195a1..4d5f4e7 100644 --- a/drivers/scsi/aacraid/commctrl.c +++ b/drivers/scsi/aacraid/commctrl.c @@ -855,6 +855,8 @@ int aac_do_ioctl(struct aac_dev * dev, int cmd, void __user *arg) { int status; + mutex_lock(&dev->ioctl_mutex); + /* * HBA gets first crack */ @@ -890,6 +892,8 @@ int aac_do_ioctl(struct aac_dev * dev, int cmd, void __user *arg) status = -ENOTTY; break; } + mutex_unlock(&dev->ioctl_mutex); + return status; } diff --git a/drivers/scsi/aacraid/linit.c b/drivers/scsi/aacraid/linit.c index 48e2a79..5f08bcf 100644 --- a/drivers/scsi/aacraid/linit.c +++ b/drivers/scsi/aacraid/linit.c @@ -703,23 +703,15 @@ static int aac_cfg_open(struct inode *inode, struct file *file) static long aac_cfg_ioctl(struct file *file, unsigned int cmd, unsigned long arg) { - int ret; - struct aac_dev *aac; - aac = (struct aac_dev *)file->private_data; if (!capable(CAP_SYS_RAWIO) || aac->adapter_shutdown) return -EPERM; - mutex_lock(&aac_mutex); - ret = aac_do_ioctl(file->private_data, cmd, (void __user *)arg); - mutex_unlock(&aac_mutex); - - return ret; + return aac_do_ioctl(file->private_data, cmd, (void __user *)arg); } #ifdef CONFIG_COMPAT static long aac_compat_do_ioctl(struct aac_dev *dev, unsigned cmd, unsigned long arg) { long ret; - mutex_lock(&aac_mutex); switch (cmd) { case FSACTL_MINIPORT_REV_CHECK: case FSACTL_SENDFIB: @@ -753,7 +745,6 @@ static long aac_compat_do_ioctl(struct aac_dev *dev, unsigned cmd, unsigned long ret = -ENOIOCTLCMD; break; } - mutex_unlock(&aac_mutex); return ret; } @@ -1194,6 +1185,7 @@ static int aac_probe_one(struct pci_dev *pdev, const struct pci_device_id *id) goto out_free_host; spin_lock_init(&aac->fib_lock); + mutex_init(&aac->ioctl_mutex); /* * Map in the registers from the adapter. */ -- 1.9.1 -- To unsubscribe from this list: send the line "unsubscribe linux-scsi" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
