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-rw-r--r--drivers/mmc/host/sdhci.c16
1 files changed, 8 insertions, 8 deletions
diff --git a/drivers/mmc/host/sdhci.c b/drivers/mmc/host/sdhci.c
index fcdd00785033..6c866b43b03c 100644
--- a/drivers/mmc/host/sdhci.c
+++ b/drivers/mmc/host/sdhci.c
@@ -378,16 +378,16 @@ static void sdhci_kunmap_atomic(void *buffer, unsigned long *flags)
static void sdhci_set_adma_desc(u8 *desc, u32 addr, int len, unsigned cmd)
{
- desc[7] = (addr >> 24) & 0xff;
- desc[6] = (addr >> 16) & 0xff;
- desc[5] = (addr >> 8) & 0xff;
- desc[4] = (addr >> 0) & 0xff;
+ __le32 *dataddr = (__le32 __force *)(desc + 4);
+ __le16 *cmdlen = (__le16 __force *)desc;
- desc[3] = (len >> 8) & 0xff;
- desc[2] = (len >> 0) & 0xff;
+ /* SDHCI specification says ADMA descriptors should be 4 byte
+ * aligned, so using 16 or 32bit operations should be safe. */
- desc[0] = cmd & 0xff;
- desc[1] = cmd >> 8;
+ cmdlen[0] = cpu_to_le16(cmd);
+ cmdlen[1] = cpu_to_le16(len);
+
+ dataddr[0] = cpu_to_le32(addr);
}
static int sdhci_adma_table_pre(struct sdhci_host *host,