2 files changed, 18 insertions, 0 deletions

diff --git a/drivers/mmc/mmc.c b/drivers/mmc/mmc.c
index 3c5904834fe8..0a8165974ba7 100644
--- a/drivers/mmc/mmc.c
+++ b/drivers/mmc/mmc.c
@@ -457,6 +457,11 @@ static void mmc_idle_cards(struct mmc_host *host)
 {
         struct mmc_command cmd;
 
+        host->ios.chip_select = MMC_CS_HIGH;
+        host->ops->set_ios(host, &host->ios);
+
+        mmc_delay(1);
+
         cmd.opcode = MMC_GO_IDLE_STATE;
         cmd.arg = 0;
         cmd.flags = MMC_RSP_NONE;
@@ -464,6 +469,11 @@ static void mmc_idle_cards(struct mmc_host *host)
         mmc_wait_for_cmd(host, &cmd, 0);
 
         mmc_delay(1);
+
+        host->ios.chip_select = MMC_CS_DONTCARE;
+        host->ops->set_ios(host, &host->ios);
+
+        mmc_delay(1);
 }
 
 /*
@@ -475,6 +485,7 @@ static void mmc_power_up(struct mmc_host *host)
 
         host->ios.vdd = bit;
         host->ios.bus_mode = MMC_BUSMODE_OPENDRAIN;
+        host->ios.chip_select = MMC_CS_DONTCARE;
         host->ios.power_mode = MMC_POWER_UP;
         host->ops->set_ios(host, &host->ios);
 
@@ -492,6 +503,7 @@ static void mmc_power_off(struct mmc_host *host)
         host->ios.clock = 0;
         host->ios.vdd = 0;
         host->ios.bus_mode = MMC_BUSMODE_OPENDRAIN;
+        host->ios.chip_select = MMC_CS_DONTCARE;
         host->ios.power_mode = MMC_POWER_OFF;
         host->ops->set_ios(host, &host->ios);
 }
diff --git a/include/linux/mmc/host.h b/include/linux/mmc/host.h
index 9a0893f3249e..30f68c0c8c6e 100644
--- a/include/linux/mmc/host.h
+++ b/include/linux/mmc/host.h
@@ -46,6 +46,12 @@ struct mmc_ios {
 #define MMC_BUSMODE_OPENDRAIN   1
 #define MMC_BUSMODE_PUSHPULL    2
 
+        unsigned char   chip_select;            /* SPI chip select */
+
+#define MMC_CS_DONTCARE         0
+#define MMC_CS_HIGH             1
+#define MMC_CS_LOW              2
+
         unsigned char   power_mode;             /* power supply mode */
 
 #define MMC_POWER_OFF           0