[PATCH 1/2] mmc: sdhci-msm: Initialize the local ios in msm_toggle_vqmmc()

[Shawn Lin]

msm_toggle_vqmmc() builds a local struct mmc_ios and only initializes
its signal_voltage, leaving vdd and the other members uninitialized
when passing it to mmc_regulator_set_vqmmc(). It happens to work
because the function only looks at signal_voltage today, but the next
patch makes mmc_regulator_set_vqmmc() honor ios->vdd when calculating
the 3.3V voltage range, which would read the uninitialized member.

Start the local ios from mmc->ios so that all members are valid.

Cc: linux-arm-msm@xxxxxxxxxxxxxxx
Signed-off-by: Shawn Lin <shawn.lin@xxxxxxxxxxxxxx>
---

 drivers/mmc/host/sdhci-msm.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/mmc/host/sdhci-msm.c b/drivers/mmc/host/sdhci-msm.c
index aecd425..32b1bcb 100644
--- a/drivers/mmc/host/sdhci-msm.c
+++ b/drivers/mmc/host/sdhci-msm.c
@@ -1490,7 +1490,7 @@ static int msm_toggle_vqmmc(struct sdhci_msm_host *msm_host,
 			      struct mmc_host *mmc, bool level)
 {
 	int ret;
-	struct mmc_ios ios;
+	struct mmc_ios ios = mmc->ios;
 
 	if (msm_host->vqmmc_enabled == level)
 		return 0;
-- 
2.7.4