mmc: au1xmmc: return errors for unknown response types

au1xmmc: return error when encountering unhandled/unknown response type.

Signed-off-by: Manuel Lauss <mano@roarinelk.homelinux.net>
Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>

1 files changed, 6 insertions, 0 deletions

diff --git a/drivers/mmc/au1xmmc.c b/drivers/mmc/au1xmmc.c
index 212e41f78df4..6d6fe6e6d415 100644
--- a/drivers/mmc/au1xmmc.c
+++ b/drivers/mmc/au1xmmc.c
@@ -194,6 +194,8 @@ static int au1xmmc_send_command(struct au1xmmc_host *host, int wait,
         u32 mmccmd = (cmd->opcode << SD_CMD_CI_SHIFT);
 
         switch (mmc_resp_type(cmd)) {
+        case MMC_RSP_NONE:
+                break;
         case MMC_RSP_R1:
                 mmccmd |= SD_CMD_RT_1;
                 break;
@@ -206,6 +208,10 @@ static int au1xmmc_send_command(struct au1xmmc_host *host, int wait,
         case MMC_RSP_R3:
                 mmccmd |= SD_CMD_RT_3;
                 break;
+        default:
+                printk(KERN_INFO "au1xmmc: unhandled response type %02x\n",
+                        mmc_resp_type(cmd));
+                return MMC_ERR_INVALID;
         }
 
         switch(cmd->opcode) {