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mmc: tmio_mmc_core: Replace kmap_atomic() with kmap_local_page()

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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>
Reviewed-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Link: https://lore.kernel.org/r/20221005101951.3165-13-adrian.hunter@intel.com
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
This commit is contained in:
Adrian Hunter 2022-10-05 13:19:49 +03:00 committed by Ulf Hansson
parent 14c9825f96
commit 8e8d695fa5
1 changed files with 2 additions and 2 deletions
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4
drivers/mmc/host/tmio_mmc.h
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@ -206,13 +206,13 @@ irqreturn_t tmio_mmc_irq(int irq, void *devid);
static inline char *tmio_mmc_kmap_atomic(struct scatterlist *sg)
{
return kmap_atomic(sg_page(sg)) + sg->offset;
return kmap_local_page(sg_page(sg)) + sg->offset;
}
static inline void tmio_mmc_kunmap_atomic(struct scatterlist *sg,
void *virt)
{
kunmap_atomic(virt - sg->offset);
kunmap_local(virt - sg->offset);
}
#ifdef CONFIG_PM