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| author | Pierre Ossman <drzeus@drzeus.cx> | 2007-02-02 18:27:42 +0100 |
|---|---|---|
| committer | Pierre Ossman <drzeus@drzeus.cx> | 2007-02-04 20:54:12 +0100 |
| commit | 2a22b14edfdf1dce303ec48bb934a6a2edb278b5 (patch) | |
| tree | e0e3a9704358297ed1fa8394af83faded7718733 /drivers/mmc | |
| parent | 4a0ddbd25ad4e03a0a1657f5cb2259c9a35fe9e6 (diff) | |
| download | linux-stable-2a22b14edfdf1dce303ec48bb934a6a2edb278b5.tar.gz linux-stable-2a22b14edfdf1dce303ec48bb934a6a2edb278b5.tar.bz2 linux-stable-2a22b14edfdf1dce303ec48bb934a6a2edb278b5.zip | |
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>
Diffstat (limited to 'drivers/mmc')
| -rw-r--r-- | drivers/mmc/sdhci.c | 24 | ||||
| -rw-r--r-- | drivers/mmc/sdhci.h | 1 |
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 */ |