[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>
diff --git a/drivers/mmc/sdhci.h b/drivers/mmc/sdhci.h
index 8ed2a89..b1aa3ac 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 @@
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 */