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authorPierre Ossman <drzeus@drzeus.cx>2007-02-02 18:27:42 +0100
committerPierre Ossman <drzeus@drzeus.cx>2007-02-04 20:54:12 +0100
commit2a22b14edfdf1dce303ec48bb934a6a2edb278b5 (patch)
treee0e3a9704358297ed1fa8394af83faded7718733
parent4a0ddbd25ad4e03a0a1657f5cb2259c9a35fe9e6 (diff)
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mmc: sdhci: replace kmap with page_address
Since we actively avoid highmem, calling kmap_atomic() instead of page_address() is effectively only obfuscation. Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
-rw-r--r--drivers/mmc/sdhci.c24
-rw-r--r--drivers/mmc/sdhci.h1
2 files changed, 6 insertions, 19 deletions
diff --git a/drivers/mmc/sdhci.c b/drivers/mmc/sdhci.c
index b57393c7f9b5..24803538570a 100644
--- a/drivers/mmc/sdhci.c
+++ b/drivers/mmc/sdhci.c
@@ -206,15 +206,9 @@ static void sdhci_deactivate_led(struct sdhci_host *host)
* *
\*****************************************************************************/
-static inline char* sdhci_kmap_sg(struct sdhci_host* host)
+static inline char* sdhci_sg_to_buffer(struct sdhci_host* host)
{
- host->mapped_sg = kmap_atomic(host->cur_sg->page, KM_BIO_SRC_IRQ);
- return host->mapped_sg + host->cur_sg->offset;
-}
-
-static inline void sdhci_kunmap_sg(struct sdhci_host* host)
-{
- kunmap_atomic(host->mapped_sg, KM_BIO_SRC_IRQ);
+ return page_address(host->cur_sg->page) + host->cur_sg->offset;
}
static inline int sdhci_next_sg(struct sdhci_host* host)
@@ -249,7 +243,7 @@ static void sdhci_read_block_pio(struct sdhci_host *host)
chunk_remain = 0;
data = 0;
- buffer = sdhci_kmap_sg(host) + host->offset;
+ buffer = sdhci_sg_to_buffer(host) + host->offset;
while (blksize) {
if (chunk_remain == 0) {
@@ -273,16 +267,13 @@ static void sdhci_read_block_pio(struct sdhci_host *host)
}
if (host->remain == 0) {
- sdhci_kunmap_sg(host);
if (sdhci_next_sg(host) == 0) {
BUG_ON(blksize != 0);
return;
}
- buffer = sdhci_kmap_sg(host);
+ buffer = sdhci_sg_to_buffer(host);
}
}
-
- sdhci_kunmap_sg(host);
}
static void sdhci_write_block_pio(struct sdhci_host *host)
@@ -299,7 +290,7 @@ static void sdhci_write_block_pio(struct sdhci_host *host)
data = 0;
bytes = 0;
- buffer = sdhci_kmap_sg(host) + host->offset;
+ buffer = sdhci_sg_to_buffer(host) + host->offset;
while (blksize) {
size = min(host->size, host->remain);
@@ -323,16 +314,13 @@ static void sdhci_write_block_pio(struct sdhci_host *host)
}
if (host->remain == 0) {
- sdhci_kunmap_sg(host);
if (sdhci_next_sg(host) == 0) {
BUG_ON(blksize != 0);
return;
}
- buffer = sdhci_kmap_sg(host);
+ buffer = sdhci_sg_to_buffer(host);
}
}
-
- sdhci_kunmap_sg(host);
}
static void sdhci_transfer_pio(struct sdhci_host *host)
diff --git a/drivers/mmc/sdhci.h b/drivers/mmc/sdhci.h
index bc6bf7e7757d..e324f0a623dc 100644
--- a/drivers/mmc/sdhci.h
+++ b/drivers/mmc/sdhci.h
@@ -183,7 +183,6 @@ struct sdhci_host {
struct mmc_data *data; /* Current data request */
struct scatterlist *cur_sg; /* We're working on this */
- char *mapped_sg; /* This is where it's mapped */
int num_sg; /* Entries left */
int offset; /* Offset into current sg */
int remain; /* Bytes left in current */