[PATCH 2/2] mmc: core: reset sdio card properly on resume.

NeilBrown
2014-11-08T00:15:23Z

mmc_sdio_power_restore calls
mmc_send_if_cond(host, host->ocr_avail);

ret = mmc_send_io_op_cond(host, 0, NULL);

between mmc_go_idle() and mmc_sdio_init_card().
mmc_sdio_resume needs to as well, else my libertas sdio wifi
device doesn't resume properly from suspend.

Signed-off-by: NeilBrown <neilb@suse.de>
---
drivers/mmc/core/sdio.c | 8 ++++++--
1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/drivers/mmc/core/sdio.c b/drivers/mmc/core/sdio.c
index e636d9e99e4a..3f069a6f448f 100644
--- a/drivers/mmc/core/sdio.c
+++ b/drivers/mmc/core/sdio.c
@@ -981,8 +981,12 @@ static int mmc_sdio_resume(struct mmc_host *host)
if (mmc_card_is_removable(host) || !mmc_card_keep_power(host)) {
sdio_reset(host);
mmc_go_idle(host);
- err = mmc_sdio_init_card(host, host->card->ocr, host->card,
- mmc_card_keep_power(host));
+ mmc_send_if_cond(host, host->ocr_avail);
+ err = mmc_send_io_op_cond(host, 0, NULL);
+ if (!err)
+ err = mmc_sdio_init_card(host, host->card->ocr,
+ host->card,
+ mmc_card_keep_power(host));
} else if (mmc_card_keep_power(host) && mmc_card_wake_sdio_irq(host)) {
/* We may have switched to 1-bit mode during suspend */
err = sdio_enable_4bit_bus(host->card);