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| author | Pierre Ossman | 2006-07-02 17:52:10 +0200 |
|---|---|---|
| committer | Russell King | 2006-07-02 17:52:10 +0200 |
| commit | 1d676e02970d9e511c9b96101501da90954ee265 (patch) | |
| tree | 59a5e1c46584cfa7683d33d4c3ff494589ee65e3 /drivers/mmc/sdhci.h | |
| parent | [MMC] sdhci: Avoid sdhci DMA boundaries (diff) | |
| download | kernel-qcow2-linux-1d676e02970d9e511c9b96101501da90954ee265.tar.gz kernel-qcow2-linux-1d676e02970d9e511c9b96101501da90954ee265.tar.xz kernel-qcow2-linux-1d676e02970d9e511c9b96101501da90954ee265.zip | |
[MMC] sdhci: Test for invalid block size
The controller has an upper limit on the block size. Make sure we do not
cross it.
Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'drivers/mmc/sdhci.h')
| -rw-r--r-- | drivers/mmc/sdhci.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/mmc/sdhci.h b/drivers/mmc/sdhci.h index 8ed2a8973db6..b1aa3acf0906 100644 --- a/drivers/mmc/sdhci.h +++ b/drivers/mmc/sdhci.h @@ -131,6 +131,8 @@ #define SDHCI_TIMEOUT_CLK_UNIT 0x00000080 #define SDHCI_CLOCK_BASE_MASK 0x00003F00 #define SDHCI_CLOCK_BASE_SHIFT 8 +#define SDHCI_MAX_BLOCK_MASK 0x00030000 +#define SDHCI_MAX_BLOCK_SHIFT 16 #define SDHCI_CAN_DO_DMA 0x00400000 #define SDHCI_CAN_VDD_330 0x01000000 #define SDHCI_CAN_VDD_300 0x02000000 @@ -161,6 +163,7 @@ struct sdhci_host { unsigned int max_clk; /* Max possible freq (MHz) */ unsigned int timeout_clk; /* Timeout freq (KHz) */ + unsigned int max_block; /* Max block size (bytes) */ unsigned int clock; /* Current clock (MHz) */ unsigned short power; /* Current voltage */ |