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| author | Linus Walleij <linus.walleij@linaro.org> | 2024-02-28 12:07:27 +0300 |
|---|---|---|
| committer | Ulf Hansson <ulf.hansson@linaro.org> | 2024-02-28 15:24:47 +0300 |
| commit | 44d41bf65a4bd74e00300fda0b3220921128f722 (patch) | |
| tree | d46340a54a0de949a251e36bf28bfb79a09c73e0 /drivers/mmc | |
| parent | 6f3d56882a3f210e7d1b6a169c4b32d926283f39 (diff) | |
| download | linux-44d41bf65a4bd74e00300fda0b3220921128f722.tar.xz | |
mmc: sdhci-esdhc-mcf: Flag the sg_miter as atomic
The sg_miter used to loop over the returned sglist from a
transfer in the esdhc subdriver for SDHCI can be called
from atomic context so the miter needs to be atomic.
sdhci_request_done() is always called from process context,
either as a work or as part of the threaded interrupt handler,
but the one case when we are actually calling .request_done()
from an atomic context is in sdhci_irq().
Fix this by flagging the miter atomic so we always use
kmap_atomic().
Fixes: e8a167b84886 ("mmc: sdhci-esdhc-mcf: Use sg_miter for swapping")
Reported-by: Adrian Hunter <adrian.hunter@intel.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Acked-by: Adrian Hunter <adrian.hunter@intel.com>
Link: https://lore.kernel.org/r/20240228-fix-sdhci-esdhc-mcf-2-v2-1-4ebb3fd691ea@linaro.org
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Diffstat (limited to 'drivers/mmc')
| -rw-r--r-- | drivers/mmc/host/sdhci-esdhc-mcf.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/mmc/host/sdhci-esdhc-mcf.c b/drivers/mmc/host/sdhci-esdhc-mcf.c index 1909a11fd065..c97363e2d86c 100644 --- a/drivers/mmc/host/sdhci-esdhc-mcf.c +++ b/drivers/mmc/host/sdhci-esdhc-mcf.c @@ -313,7 +313,7 @@ static void esdhc_mcf_request_done(struct sdhci_host *host, * transfer endiannes. A swap after the transfer is needed. */ sg_miter_start(&sgm, mrq->data->sg, mrq->data->sg_len, - SG_MITER_TO_SG | SG_MITER_FROM_SG); + SG_MITER_ATOMIC | SG_MITER_TO_SG | SG_MITER_FROM_SG); while (sg_miter_next(&sgm)) { buffer = sgm.addr; esdhc_mcf_buffer_swap32(buffer, sgm.length); |