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| author | Christian Marangi <ansuelsmth@gmail.com> | 2022-09-15 22:48:44 +0200 |
|---|---|---|
| committer | Vinod Koul <vkoul@kernel.org> | 2022-09-29 22:46:07 +0530 |
| commit | 7c8765308371be30f50c1b5b97618b731514b207 (patch) | |
| tree | 30331dd20519eb2e98d89b0cb9b0db84fed76e69 | |
| parent | 693e9c269e8e8fb16f1d7fac38bd774402722e87 (diff) | |
| download | linux-7c8765308371be30f50c1b5b97618b731514b207.tar.gz | |
dmaengine: qcom-adm: fix wrong sizeof config in slave_config
Fix broken slave_config function that uncorrectly compare the
peripheral_size with the size of the config pointer instead of the size
of the config struct. This cause the crci value to be ignored and cause
a kernel panic on any slave that use adm driver.
To fix this, compare to the size of the struct and NOT the size of the
pointer.
Fixes: 03de6b273805 ("dmaengine: qcom-adm: stop abusing slave_id config")
Signed-off-by: Christian Marangi <ansuelsmth@gmail.com>
Cc: stable@vger.kernel.org # v5.17+
Reviewed-by: Arnd Bergmann <arnd@arndb.de>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Link: https://lore.kernel.org/r/20220915204844.3838-1-ansuelsmth@gmail.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
| -rw-r--r-- | drivers/dma/qcom/qcom_adm.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/dma/qcom/qcom_adm.c b/drivers/dma/qcom/qcom_adm.c index facdacf8aede..c77d9de853de 100644 --- a/drivers/dma/qcom/qcom_adm.c +++ b/drivers/dma/qcom/qcom_adm.c @@ -494,7 +494,7 @@ static int adm_slave_config(struct dma_chan *chan, struct dma_slave_config *cfg) spin_lock_irqsave(&achan->vc.lock, flag); memcpy(&achan->slave, cfg, sizeof(struct dma_slave_config)); - if (cfg->peripheral_size == sizeof(config)) + if (cfg->peripheral_size == sizeof(*config)) achan->crci = config->crci; spin_unlock_irqrestore(&achan->vc.lock, flag); |