mmc: in mmc_power_up(), use previously selected ocr if available

When mmc_power_up is called during unsafe resume, host->ocr should be used
instead of host->ocr_avail.

Signed-off-by: Balaji Rao <balajirrao@openmoko.org>
Cc: Andy Green <andy@openmoko.com>
Cc: Pierre Ossman <drzeus-mmc@drzeus.cx>
Cc: Ian Molton <ian@mnementh.co.uk>
Cc: "Roberto A. Foglietta" <roberto.foglietta@gmail.com>
Cc: Philip Langdale <philipl@overt.org>
Acked-by: Matt Fleming <matt@console-pimps.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 7 insertions, 1 deletions

diff --git a/drivers/mmc/core/core.c b/drivers/mmc/core/core.c
index d84c880fac84..e22d2b5576ec 100644
--- a/drivers/mmc/core/core.c
+++ b/drivers/mmc/core/core.c
@@ -687,7 +687,13 @@ void mmc_set_timing(struct mmc_host *host, unsigned int timing)
  */
 static void mmc_power_up(struct mmc_host *host)
 {
-        int bit = fls(host->ocr_avail) - 1;
+        int bit;
+
+        /* If ocr is set, we use it */
+        if (host->ocr)
+                bit = ffs(host->ocr) - 1;
+        else
+                bit = fls(host->ocr_avail) - 1;
 
         host->ios.vdd = bit;
         if (mmc_host_is_spi(host)) {