mmc: properly iterate over sg list in debug check

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

1 files changed, 3 insertions, 2 deletions

diff --git a/drivers/mmc/core/core.c b/drivers/mmc/core/core.c
index 3ee5b8c3b5ce..044d84eeed7c 100644
--- a/drivers/mmc/core/core.c
+++ b/drivers/mmc/core/core.c
@@ -121,6 +121,7 @@ mmc_start_request(struct mmc_host *host, struct mmc_request *mrq)
 {
 #ifdef CONFIG_MMC_DEBUG
         unsigned int i, sz;
+        struct scatterlist *sg;
 #endif
 
         pr_debug("%s: starting CMD%u arg %08x flags %08x\n",
@@ -156,8 +157,8 @@ mmc_start_request(struct mmc_host *host, struct mmc_request *mrq)
 
 #ifdef CONFIG_MMC_DEBUG
                 sz = 0;
-                for (i = 0;i < mrq->data->sg_len;i++)
-                        sz += mrq->data->sg[i].length;
+                for_each_sg(mrq->data->sg, sg, mrq->data->sg_len, i)
+                        sz += sg->length;
                 BUG_ON(sz != mrq->data->blocks * mrq->data->blksz);
 #endif