[PATCH 1/3] mmc: core: need do mmc_power_cycle in mmc_sdio_resend_if_cond

[Yong Mao]

From: yong mao <yong.mao@xxxxxxxxxxxx>

When mmc_sdio_resned_if_cond is invoked, it indicates the SDIO
device is not in the right state. In this condition, the previous
implementation of mmc_sdio_resend_if_cond can't make sure SDIO
device be back to idle state. mmc_power_cycle can reset the SDIO
device by HW and also make sure SDIO device enter to idle state
correctly.

Signed-off-by: Yong Mao <yong.mao@xxxxxxxxxxxx>
---
 drivers/mmc/core/sdio.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/mmc/core/sdio.c b/drivers/mmc/core/sdio.c
index ebb387a..ada0a80 100644
--- a/drivers/mmc/core/sdio.c
+++ b/drivers/mmc/core/sdio.c
@@ -546,6 +546,7 @@ static int mmc_sdio_init_uhs_card(struct mmc_card *card)
 static void mmc_sdio_resend_if_cond(struct mmc_host *host,
 				    struct mmc_card *card)
 {
+	mmc_power_cycle(host, host->card->ocr);
 	sdio_reset(host);
 	mmc_go_idle(host);
 	mmc_send_if_cond(host, host->ocr_avail);
-- 
1.9.1