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Diffstat (limited to 'drivers/mmc')
-rw-r--r--drivers/mmc/host/au1xmmc.c12
1 files changed, 8 insertions, 4 deletions
diff --git a/drivers/mmc/host/au1xmmc.c b/drivers/mmc/host/au1xmmc.c
index ed77fbfa4774..9b4be67330dd 100644
--- a/drivers/mmc/host/au1xmmc.c
+++ b/drivers/mmc/host/au1xmmc.c
@@ -40,6 +40,7 @@
#include <linux/interrupt.h>
#include <linux/dma-mapping.h>
#include <linux/scatterlist.h>
+#include <linux/highmem.h>
#include <linux/leds.h>
#include <linux/mmc/host.h>
#include <linux/slab.h>
@@ -405,7 +406,7 @@ 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 = sg_virt(sg) + host->pio.offset;
+ sg_ptr = kmap_atomic(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;
@@ -421,11 +422,12 @@ static void au1xmmc_send_pio(struct au1xmmc_host *host)
if (!(status & SD_STATUS_TH))
break;
- val = *sg_ptr++;
+ val = sg_ptr[count];
__raw_writel((unsigned long)val, HOST_TXPORT(host));
wmb(); /* drain writebuffer */
}
+ kunmap_atomic(sg_ptr);
host->pio.len -= count;
host->pio.offset += count;
@@ -462,7 +464,7 @@ static void au1xmmc_receive_pio(struct au1xmmc_host *host)
if (host->pio.index < host->dma.len) {
sg = &data->sg[host->pio.index];
- sg_ptr = sg_virt(sg) + host->pio.offset;
+ sg_ptr = kmap_atomic(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;
@@ -501,8 +503,10 @@ static void au1xmmc_receive_pio(struct au1xmmc_host *host)
val = __raw_readl(HOST_RXPORT(host));
if (sg_ptr)
- *sg_ptr++ = (unsigned char)(val & 0xFF);
+ sg_ptr[count] = (unsigned char)(val & 0xFF);
}
+ if (sg_ptr)
+ kunmap_atomic(sg_ptr);
host->pio.len -= count;
host->pio.offset += count;