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
Changes in V1:
Unlock ioctl_mutex incase of error
Fix compilation error with aac->adapter_shutdown
Signed-off-by: Raghava Aditya Renukunta <raghavaaditya.renuku...@pmcs.com>
---
drivers/scsi/aacraid/aacraid.h | 1 +
drivers/scsi/aacraid/commctrl.c | 8 +++++++-
drivers/scsi/aacraid/linit.c | 13 ++++---------
3 files changed, 12 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..ebf214b 100644
--- a/drivers/scsi/aacraid/commctrl.c
+++ b/drivers/scsi/aacraid/commctrl.c
@@ -855,13 +855,15 @@ int aac_do_ioctl(struct aac_dev * dev, int cmd, void
__user *arg)
{
int status;
+ mutex_lock(&dev->ioctl_mutex);
+
/*
* HBA gets first crack
*/
status = aac_dev_ioctl(dev, cmd, arg);
if (status != -ENOTTY)
- return status;
+ goto cleanup;
switch (cmd) {
case FSACTL_MINIPORT_REV_CHECK:
@@ -890,6 +892,10 @@ int aac_do_ioctl(struct aac_dev * dev, int cmd, void
__user *arg)
status = -ENOTTY;
break;
}
+
+cleanup:
+ mutex_unlock(&dev->ioctl_mutex);
+
return status;
}
diff --git a/drivers/scsi/aacraid/linit.c b/drivers/scsi/aacraid/linit.c
index 48e2a79..3f9c741 100644
--- a/drivers/scsi/aacraid/linit.c
+++ b/drivers/scsi/aacraid/linit.c
@@ -703,23 +703,18 @@ 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;
+ struct aac_dev *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(aac, 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 +748,6 @@ 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 +1188,7 @@ 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
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