mailbox: always wait in mbox_send_message for blocking Tx mode
authorSudeep Holla <sudeep.holla@arm.com>
Tue, 21 Mar 2017 11:30:14 +0000 (11:30 +0000)
committerJassi Brar <jaswinder.singh@linaro.org>
Thu, 27 Apr 2017 10:50:04 +0000 (16:20 +0530)
commitc61b781ee084e69855477d23dd33e7e6caad652c
tree8c480b9a20cc24f9d92d83e81f775441eb0314a7
parent73874913d5044fb5d81d34b2c760a8df8521bd0f
mailbox: always wait in mbox_send_message for blocking Tx mode

There exists a race when msg_submit return immediately as there was an
active request being processed which may have completed just before it's
checked again in mbox_send_message. This will result in return to the
caller without waiting in mbox_send_message even when it's blocking Tx.

This patch fixes the issue by waiting for the completion always if Tx
is in blocking mode.

Fixes: 2b6d83e2b8b7 ("mailbox: Introduce framework for mailbox")
Reported-by: Alexey Klimov <alexey.klimov@arm.com>
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
Reviewed-by: Alexey Klimov <alexey.klimov@arm.com>
Signed-off-by: Jassi Brar <jaswinder.singh@linaro.org>
drivers/mailbox/mailbox.c