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| author | Adrian Hunter <adrian.hunter@intel.com> | 2022-10-05 13:19:40 +0300 |
|---|---|---|
| committer | Ulf Hansson <ulf.hansson@linaro.org> | 2022-12-07 13:22:32 +0100 |
| commit | 47722e3fd92482c036be43a4ba62698c8b8b63b8 (patch) | |
| tree | 277c7eff4cc90990b0938eeae2c14858742355db | |
| parent | e467c154f748b9fd1b3cbff685b58091b532c90e (diff) | |
| download | lwn-47722e3fd92482c036be43a4ba62698c8b8b63b8.tar.gz lwn-47722e3fd92482c036be43a4ba62698c8b8b63b8.zip | |
mmc: sdhci: Replace kmap_atomic() with kmap_local_page()
kmap_local_page() is equivalent to kmap_atomic() except that it does not
disable page faults or preemption. Where possible kmap_local_page() is
preferred to kmap_atomic() - refer kernel highmem documentation.
In this case, there is no need to disable page faults or preemption, so
replace kmap_atomic() with kmap_local_page(), and, correspondingly,
kunmap_atomic() with kunmap_local().
Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Link: https://lore.kernel.org/r/20221005101951.3165-4-adrian.hunter@intel.com
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
| -rw-r--r-- | drivers/mmc/host/sdhci.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/mmc/host/sdhci.c b/drivers/mmc/host/sdhci.c index a14cc08e5318..ebb71d235c38 100644 --- a/drivers/mmc/host/sdhci.c +++ b/drivers/mmc/host/sdhci.c @@ -698,12 +698,12 @@ static int sdhci_pre_dma_transfer(struct sdhci_host *host, static char *sdhci_kmap_atomic(struct scatterlist *sg) { - return kmap_atomic(sg_page(sg)) + sg->offset; + return kmap_local_page(sg_page(sg)) + sg->offset; } static void sdhci_kunmap_atomic(void *buffer) { - kunmap_atomic(buffer); + kunmap_local(buffer); } void sdhci_adma_write_desc(struct sdhci_host *host, void **desc, |