sdio: handle null tuples

Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>

1 files changed, 4 insertions, 0 deletions

diff --git a/drivers/mmc/core/sdio_cis.c b/drivers/mmc/core/sdio_cis.c
index 6ba93f59928..963f2937c5e 100644
--- a/drivers/mmc/core/sdio_cis.c
+++ b/drivers/mmc/core/sdio_cis.c
@@ -223,6 +223,10 @@ static int sdio_read_cis(struct mmc_card *card, struct sdio_func *func)
                 if (tpl_code == 0xff)
                         break;
 
+                /* null entries have no link field or data */
+                if (tpl_code == 0x00)
+                        continue;
+
                 ret = mmc_io_rw_direct(card, 0, 0, ptr++, 0, &tpl_link);
                 if (ret)
                         break;