From 8ae438b68066137d44bf35cf3784d2fe9c419cff Mon Sep 17 00:00:00 2001
From: lintao <lintao@rock-chips.com>
Date: Tue, 9 Sep 2014 14:44:19 +0800
Subject: [PATCH] mmc: fix resume kpanic if no dms been allocated when init

---
 drivers/mmc/host/rk_sdmmc.c | 11 +++++++++--
 1 file changed, 9 insertions(+), 2 deletions(-)

diff --git a/drivers/mmc/host/rk_sdmmc.c b/drivers/mmc/host/rk_sdmmc.c
index 8daacd47a318..4db50856b0da 100755
--- a/drivers/mmc/host/rk_sdmmc.c
+++ b/drivers/mmc/host/rk_sdmmc.c
@@ -691,6 +691,10 @@ static int dw_mci_edmac_init(struct dw_mci *host)
         return 0;
 
 err_exit:
+        if (NULL != host->dms) {
+                kfree(host->dms);
+                host->dms = NULL;
+        }
         return -ENXIO;
 
 }
@@ -699,8 +703,11 @@ static void dw_mci_edmac_exit(struct dw_mci *host)
 {
         dma_release_channel(host->dms->ch);
         host->dms->ch = NULL;
-        kfree(host->dms);
-        host->dms = NULL;
+
+        if (NULL != host->dms) {
+                kfree(host->dms);
+                host->dms = NULL;
+        }
 }
 
 static const struct dw_mci_dma_ops dw_mci_edmac_ops = {
-- 
2.34.1