From: lintao <lintao@rock-chips.com>
Date: Fri, 21 Mar 2014 06:01:03 +0000 (+0800)
Subject: mmc: core:
X-Git-Tag: firefly_0821_release~5935
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=c90024b45998ad2acf82e09f8f5d07023b594dbb;p=firefly-linux-kernel-4.4.55.git

mmc: core:
    Fix mmc_host_rescan triger kernel panic if none SDIO controller configured.
host->class_dev will be NULL pointer when this case, just workaround it.
---

diff --git a/drivers/mmc/core/host.c b/drivers/mmc/core/host.c
index 8610b36fee61..7767f14e359b 100755
--- a/drivers/mmc/core/host.c
+++ b/drivers/mmc/core/host.c
@@ -610,11 +610,10 @@ int mmc_host_rescan(struct mmc_host *host)
         if(!host)
             host = primary_sdio_host;
         else 
-            printk("mmc_host_rescan pass in host from argument!\n");
+            printk("%s: mmc_host_rescan pass in host from argument!\n", mmc_hostname(host));
     }
     else{
-        printk("%s: host isn't  initialization successfully.\n",
-                mmc_hostname(host));
+        printk("sdio: host isn't  initialization successfully.\n");                    
         return -ENOMEDIUM;
     }