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| author | Sergey Senozhatsky <senozhatsky@chromium.org> | 2025-06-25 14:20:37 +0900 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2025-07-10 16:03:05 +0200 |
| commit | b935c1e734d238fba1732079f320b6bdd793fa18 (patch) | |
| tree | 42593496fc20e31d858cf6b559cffbb383d41793 /drivers/mmc | |
| parent | 61cdd663564674ea21ceb50aa9d3697cbe9e45f9 (diff) | |
| download | linux-b935c1e734d238fba1732079f320b6bdd793fa18.tar.gz linux-b935c1e734d238fba1732079f320b6bdd793fa18.tar.bz2 linux-b935c1e734d238fba1732079f320b6bdd793fa18.zip | |
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>
Diffstat (limited to 'drivers/mmc')
| -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 d1bceb85c9eb..cf685c0a17ed 100644 --- a/drivers/mmc/host/mtk-sd.c +++ b/drivers/mmc/host/mtk-sd.c @@ -1347,6 +1347,7 @@ 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. |