From: Girish K S <girish.shivananjappa@linaro.org>
Date: Thu, 15 Dec 2011 11:57:42 +0000 (+0530)
Subject: mmc: core: Fix voltage select in DDR mode
X-Git-Tag: v3.3-rc1~72^2~30
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=913047e9e5787a90696533a9f109552b7694ecc9;p=karo-tx-linux.git

mmc: core: Fix voltage select in DDR mode

This patch fixes the wrong comparison before setting the interface
voltage in DDR mode.

The assignment to the variable ddr before comaprison is either
ddr = MMC_1_2V_DDR_MODE; or ddr == MMC_1_8V_DDR_MODE. But the comparison
is done with the extended csd value if ddr == EXT_CSD_CARD_TYPE_DDR_1_2V.

Signed-off-by: Girish K S <girish.shivananjappa@linaro.org>
Acked-by: Subhash Jadavani <subhashj@codeaurora.org>
Acked-by: Philip Rakity <prakity@marvell.com>
Cc: <stable@kernel.org>
Signed-off-by: Chris Ball <cjb@laptop.org>
---

diff --git a/drivers/mmc/core/mmc.c b/drivers/mmc/core/mmc.c
index 006e932a3ae3..f0a9f1fbd1f6 100644
--- a/drivers/mmc/core/mmc.c
+++ b/drivers/mmc/core/mmc.c
@@ -1058,7 +1058,7 @@ static int mmc_init_card(struct mmc_host *host, u32 ocr,
 			 *
 			 * WARNING: eMMC rules are NOT the same as SD DDR
 			 */
-			if (ddr == EXT_CSD_CARD_TYPE_DDR_1_2V) {
+			if (ddr == MMC_1_2V_DDR_MODE) {
 				err = mmc_set_signal_voltage(host,
 					MMC_SIGNAL_VOLTAGE_120, 0);
 				if (err)