diff options
| author | Sergey Senozhatsky <senozhatsky@chromium.org> | 2025-06-25 14:20:37 +0900 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2025-07-10 16:04:44 +0200 |
| commit | ca40e57b22a0d27d644d0df6bab3b4363dc8b1e0 (patch) | |
| tree | 410425c86e8590b61bf96cd9a79e4d9529d6fffe | |
| parent | 3419bc6a7b65cbbb91417bb9970208478e034c79 (diff) | |
mtk-sd: reset host->mrq on prepare_data() error
commit ec54c0a20709ed6e56f40a8d59eee725c31a916b upstream.
Do not leave host with dangling ->mrq pointer if we hit
the msdc_prepare_data() error out path.
Signed-off-by: Sergey Senozhatsky <senozhatsky@chromium.org>
Reviewed-by: Masami Hiramatsu (Google) <mhiramat@kernel.org>
Fixes: f5de469990f1 ("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: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | drivers/mmc/host/mtk-sd.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/mmc/host/mtk-sd.c b/drivers/mmc/host/mtk-sd.c index 7e5dda65b72f..be9954f5bc0a 100644 --- a/drivers/mmc/host/mtk-sd.c +++ b/drivers/mmc/host/mtk-sd.c @@ -1354,6 +1354,7 @@ 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. |