5.15-stable review patch. If anyone has any objections, please let me know.
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From: Marek Behún kabel@kernel.org
[ Upstream commit 0bafb172b111ab27251af0eb684e7bde9570ce4c ]
Do not complete the "command done" completion if there are no waiters. This can happen if a wait_for_completion() timed out or was interrupted.
Fixes: 389711b37493 ("firmware: Add Turris Mox rWTM firmware driver") Signed-off-by: Marek Behún kabel@kernel.org Reviewed-by: Andy Shevchenko andy@kernel.org Signed-off-by: Arnd Bergmann arnd@arndb.de Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/firmware/turris-mox-rwtm.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/drivers/firmware/turris-mox-rwtm.c b/drivers/firmware/turris-mox-rwtm.c index c2d34dc8ba462..fa4b904d74df1 100644 --- a/drivers/firmware/turris-mox-rwtm.c +++ b/drivers/firmware/turris-mox-rwtm.c @@ -2,7 +2,7 @@ /* * Turris Mox rWTM firmware driver * - * Copyright (C) 2019 Marek Behún kabel@kernel.org + * Copyright (C) 2019, 2024 Marek Behún kabel@kernel.org */
#include <linux/armada-37xx-rwtm-mailbox.h> @@ -174,6 +174,9 @@ static void mox_rwtm_rx_callback(struct mbox_client *cl, void *data) struct mox_rwtm *rwtm = dev_get_drvdata(cl->dev); struct armada_37xx_rwtm_rx_msg *msg = data;
+ if (completion_done(&rwtm->cmd_done)) + return; + rwtm->reply = *msg; complete(&rwtm->cmd_done); }