If hif_read_reg() or hif_write_reg() fail in wilc_wlan_cleanup(), it calls release_bus() and continues execution. But it leads to double release_bus() call that means double unlock of g_linux_wlan->hif_cs mutex.
The patch adds return in case of failure. Found by Linux Driver Verification project (linuxtesting.org). Signed-off-by: Alexey Khoroshilov <khoroshi...@ispras.ru> --- drivers/staging/wilc1000/wilc_wlan.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/staging/wilc1000/wilc_wlan.c b/drivers/staging/wilc1000/wilc_wlan.c index c02665747705..cd7f52a51173 100644 --- a/drivers/staging/wilc1000/wilc_wlan.c +++ b/drivers/staging/wilc1000/wilc_wlan.c @@ -1703,12 +1703,14 @@ void wilc_wlan_cleanup(struct net_device *dev) if (!ret) { PRINT_ER("Error while reading reg\n"); release_bus(RELEASE_ALLOW_SLEEP); + return; } PRINT_ER("Writing ABORT reg\n"); ret = p->hif_func.hif_write_reg(WILC_GP_REG_0, (reg | ABORT_INT)); if (!ret) { PRINT_ER("Error while writing reg\n"); release_bus(RELEASE_ALLOW_SLEEP); + return; } release_bus(RELEASE_ALLOW_SLEEP); /** -- 1.9.1 -- To unsubscribe from this list: send the line "unsubscribe linux-wireless" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html