Commit 8e8d695f authored by Adrian Hunter's avatar Adrian Hunter Committed by Ulf Hansson
Browse files

mmc: tmio_mmc_core: 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: default avatarAdrian Hunter <adrian.hunter@intel.com>
Reviewed-by: default avatarWolfram Sang <wsa+renesas@sang-engineering.com>
Link: https://lore.kernel.org/r/20221005101951.3165-13-adrian.hunter@intel.com


Signed-off-by: default avatarUlf Hansson <ulf.hansson@linaro.org>
parent 14c9825f

drivers/mmc/host/tmio_mmc.h

+2 −2
Original line number Diff line number Diff line
@@ -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