diff options
| author | Dave Penkler <dpenkler@gmail.com> | 2025-01-11 17:14:57 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2025-01-13 06:43:34 +0100 |
| commit | 55eb3c3a6388420afda1374b353717de32ae9573 (patch) | |
| tree | a5c51c411c55482f9f53721aa74b417e56237371 | |
| parent | 95cfc75234534b117fa5762696f0cd4a29243796 (diff) | |
staging: gpib: Add missing mutex unlock in agilent usb driver
When no matching product id was found in the attach function the driver
returned without unlocking the agilent_82357a_hotplug_lock mutex.
Add the unlock call.
This was detected by smatch:
smatch warnings:
drivers/staging/gpib/agilent_82357a/agilent_82357a.c:1381 agilent_82357a_attach() warn: inconsistent returns 'global &agilent_82357a_hotplug_lock'.
Reported-by: kernel test robot <lkp@intel.com>
Reported-by: Dan Carpenter <dan.carpenter@linaro.org>
Closes: https://lore.kernel.org/r/202412210143.WJhYzXfD-lkp@intel.com/
Fixes: 4c41fe886a56 ("staging: gpib: Add Agilent/Keysight 82357x USB GPIB driver")
Signed-off-by: Dave Penkler <dpenkler@gmail.com>
Link: https://lore.kernel.org/r/20250111161457.27556-1-dpenkler@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | drivers/staging/gpib/agilent_82357a/agilent_82357a.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/staging/gpib/agilent_82357a/agilent_82357a.c b/drivers/staging/gpib/agilent_82357a/agilent_82357a.c index b21eadabc466..c22c6bb30776 100644 --- a/drivers/staging/gpib/agilent_82357a/agilent_82357a.c +++ b/drivers/staging/gpib/agilent_82357a/agilent_82357a.c @@ -1365,6 +1365,7 @@ static int agilent_82357a_attach(gpib_board_t *board, const gpib_board_config_t break; default: dev_err(&usb_dev->dev, "bug, unhandled product_id in switch?\n"); + mutex_unlock(&agilent_82357a_hotplug_lock); return -EIO; } #ifdef RESET_USB_CONFIG |