From: Xinming Hu <huxm@xxxxxxxxxxx> Host hang is observed if card is removed before firmware download gets completed. In this case, firmware will be failed to download and adapter structure gets freed. In other thread, mwifiex_remove_card() waits on semaphore until the firmware download fails. This wait is not necessary and may result in invalid adapter access. This patch uses down_trylock to return immediately so that hang issue won't occur. Signed-off-by: Xinming Hu <huxm@xxxxxxxxxxx> Signed-off-by: Amitkumar Karwar <akarwar@xxxxxxxxxxx> --- drivers/net/wireless/marvell/mwifiex/main.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/net/wireless/marvell/mwifiex/main.c b/drivers/net/wireless/marvell/mwifiex/main.c index 04b975c..b459c70 100644 --- a/drivers/net/wireless/marvell/mwifiex/main.c +++ b/drivers/net/wireless/marvell/mwifiex/main.c @@ -1434,7 +1434,7 @@ int mwifiex_remove_card(struct mwifiex_adapter *adapter, struct semaphore *sem) struct mwifiex_private *priv = NULL; int i; - if (down_interruptible(sem)) + if (down_trylock(sem)) goto exit_sem_err; if (!adapter) -- 1.8.1.4 -- To unsubscribe from this list: send the line "unsubscribe linux-wireless" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
