Commit ec54c0a2 authored by Sergey Senozhatsky's avatar Sergey Senozhatsky Committed by Ulf Hansson
Browse files

mtk-sd: reset host->mrq on prepare_data() error 



Do not leave host with dangling ->mrq pointer if we hit
the msdc_prepare_data() error out path.

Signed-off-by: default avatarSergey Senozhatsky <senozhatsky@chromium.org>
Reviewed-by: default avatarMasami Hiramatsu (Google) <mhiramat@kernel.org>
Fixes: f5de4699 ("mtk-sd: Prevent memory corruption from DMA map failure")
Cc: stable@vger.kernel.org
Link: https://lore.kernel.org/r/20250625052106.584905-1-senozhatsky@chromium.org


Signed-off-by: default avatarUlf Hansson <ulf.hansson@linaro.org>
parent dcc3bcfc

drivers/mmc/host/mtk-sd.c

+1 −0
Original line number Diff line number Diff line
@@ -1492,6 +1492,7 @@ static void msdc_ops_request(struct mmc_host *mmc, struct mmc_request *mrq) 
	if (mrq->data) {

		msdc_prepare_data(host, mrq->data);

		if (!msdc_data_prepared(mrq->data)) {

			host->mrq = NULL;

			/*

			 * Failed to prepare DMA area, fail fast before

			 * starting any commands.