au1xmmc: abort requests early if no card is present.

Don't process an MMC request if no card is present.

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

1 files changed, 7 insertions, 0 deletions

diff --git a/drivers/mmc/host/au1xmmc.c b/drivers/mmc/host/au1xmmc.c
index fcbaf40e3553..718eb879587f 100644
--- a/drivers/mmc/host/au1xmmc.c
+++ b/drivers/mmc/host/au1xmmc.c
@@ -697,6 +697,13 @@ static void au1xmmc_request(struct mmc_host* mmc, struct mmc_request* mrq)
         host->mrq = mrq;
         host->status = HOST_S_CMD;
 
+        /* fail request immediately if no card is present */
+        if (0 == au1xmmc_card_inserted(host)) {
+                mrq->cmd->error = -ENOMEDIUM;
+                au1xmmc_finish_request(host);
+                return;
+        }
+
         if (mrq->data) {
                 FLUSH_FIFO(host);
                 ret = au1xmmc_prepare_data(host, mrq->data);