[PATCH AUTOSEL 5.6 04/68] staging: wilc1000: avoid double unlocking of 'wilc->hif_cs' mutex

Sasha Levin
2020-04-10T04:03:25Z

From: Ajay Singh <ajay.kathat@microchip.com>

[ Upstream commit 6c411581caef6e3b2c286871641018364c6db50a ]

Possible double unlocking of 'wilc->hif_cs' mutex was identified by
smatch [1]. Removed the extra call to release_bus() in
wilc_wlan_handle_txq() which was missed in earlier commit fdc2ac1aafc6
("staging: wilc1000: support suspend/resume functionality").

[1]. https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org/thread/NOEVW7C3GV74EWXJO3XX6VT2NKVB2HMT/

Reported-by: kbuild test robot <lkp@intel.com>
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Ajay Singh <ajay.kathat@microchip.com>
Link: https://lore.kernel.org/r/20200221170120.15739-1-ajay.kathat@microchip.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/staging/wilc1000/wlan.c | 1 -
1 file changed, 1 deletion(-)

diff --git a/drivers/staging/wilc1000/wlan.c b/drivers/staging/wilc1000/wlan.c
index 601e4d1345d24..05b8adfe001da 100644
--- a/drivers/staging/wilc1000/wlan.c
+++ b/drivers/staging/wilc1000/wlan.c
@@ -572,7 +572,6 @@ int wilc_wlan_handle_txq(struct wilc *wilc, u32 *txq_count)
entries = ((reg >> 3) & 0x3f);
break;
}
- release_bus(wilc, WILC_BUS_RELEASE_ALLOW_SLEEP);
} while (--timeout);
if (timeout <= 0) {
ret = func->hif_write_reg(wilc, WILC_HOST_VMM_CTL, 0x0);
--
2.20.1