mmc: vub300: fix invalid response handling

[linux-2.6-microblaze.git] / drivers / mmc / host / vub300.c

diff --git a/drivers/mmc/host/vub300.c b/drivers/mmc/host/vub300.c
index e4c4bfa..9ec593d 100644 (file)
--- a/drivers/mmc/host/vub300.c
+++ b/drivers/mmc/host/vub300.c
@@ -1713,6 +1713,9 @@ static void construct_request_response(struct vub300_mmc_host *vub300,
        int bytes = 3 & less_cmd;
        int words = less_cmd >> 2;
        u8 *r = vub300->resp.response.command_response;
+
+       if (!resp_len)
+               return;
        if (bytes == 3) {
                cmd->resp[words] = (r[1 + (words << 2)] << 24)
                        | (r[2 + (words << 2)] << 16)