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@xxxxxxxxx>
---
drivers/mmc/host/au1xmmc.c | 8 ++++----
1 file changed, 4 insertions(+), 4 deletions(-)
diff --git a/drivers/mmc/host/au1xmmc.c b/drivers/mmc/host/au1xmmc.c
index c88b039dc9fb..82dd0ae40305 100644
--- a/drivers/mmc/host/au1xmmc.c
+++ b/drivers/mmc/host/au1xmmc.c
@@ -388,7 +388,7 @@ static void au1xmmc_send_pio(struct au1xmmc_host *host)
/* This is the pointer to the data buffer */
sg = &data->sg[host->pio.index];
- sg_ptr = kmap_atomic(sg_page(sg)) + sg->offset + host->pio.offset;
+ sg_ptr = kmap_local_page(sg_page(sg)) + sg->offset + host->pio.offset;
/* This is the space left inside the buffer */
sg_len = data->sg[host->pio.index].length - host->pio.offset;
@@ -409,7 +409,7 @@ static void au1xmmc_send_pio(struct au1xmmc_host *host)
__raw_writel((unsigned long)val, HOST_TXPORT(host));
wmb(); /* drain writebuffer */
}
- kunmap_atomic(sg_ptr);
+ kunmap_local(sg_ptr);
host->pio.len -= count;
host->pio.offset += count;
@@ -446,7 +446,7 @@ static void au1xmmc_receive_pio(struct au1xmmc_host *host)
if (host->pio.index < host->dma.len) {
sg = &data->sg[host->pio.index];
- sg_ptr = kmap_atomic(sg_page(sg)) + sg->offset + host->pio.offset;
+ sg_ptr = kmap_local_page(sg_page(sg)) + sg->offset + host->pio.offset;
/* This is the space left inside the buffer */
sg_len = sg_dma_len(&data->sg[host->pio.index]) - host->pio.offset;
@@ -488,7 +488,7 @@ static void au1xmmc_receive_pio(struct au1xmmc_host *host)
sg_ptr[count] = (unsigned char)(val & 0xFF);
}
if (sg_ptr)
- kunmap_atomic(sg_ptr);
+ kunmap_local(sg_ptr);
host->pio.len -= count;
host->pio.offset += count;
--
2.25.1
