[PATCH] MMCI: don't read command response when invalid

[linux@arm.linux.org.uk (Russell King - ARM Linux)]

Don't read the command response from the registers when either the
command timed out (because there was no response from the card) or
the checksum on the response was invalid.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
---
 drivers/mmc/host/mmci.c |   10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/drivers/mmc/host/mmci.c b/drivers/mmc/host/mmci.c
index 5630228..040de4f 100644
--- a/drivers/mmc/host/mmci.c
+++ b/drivers/mmc/host/mmci.c
@@ -394,15 +394,15 @@ mmci_cmd_irq(struct mmci_host *host, struct mmc_command *cmd,
 
 	host->cmd = NULL;
 
-	cmd->resp[0] = readl(base + MMCIRESPONSE0);
-	cmd->resp[1] = readl(base + MMCIRESPONSE1);
-	cmd->resp[2] = readl(base + MMCIRESPONSE2);
-	cmd->resp[3] = readl(base + MMCIRESPONSE3);
-
 	if (status & MCI_CMDTIMEOUT) {
 		cmd->error = -ETIMEDOUT;
 	} else if (status & MCI_CMDCRCFAIL && cmd->flags & MMC_RSP_CRC) {
 		cmd->error = -EILSEQ;
+	} else {
+		cmd->resp[0] = readl(base + MMCIRESPONSE0);
+		cmd->resp[1] = readl(base + MMCIRESPONSE1);
+		cmd->resp[2] = readl(base + MMCIRESPONSE2);
+		cmd->resp[3] = readl(base + MMCIRESPONSE3);
 	}
 
 	if (!cmd->data || cmd->error) {