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mmc: sdio: add reset callback to bus operations

Message ID 1428917421-10467-1-git-send-email-afenkart@gmail.com (mailing list archive)
State New, archived
Headers show

Commit Message

Andreas Fenkart April 13, 2015, 9:30 a.m. UTC 
Some drivers schedule automatic hw resets. An example is mwifiex,
which schedules a card reset if the command handler between driver
and card firmware becomes out of sync

Signed-off-by: Andreas Fenkart <afenkart@gmail.com>
---
 drivers/mmc/core/sdio.c | 7 +++++++
 1 file changed, 7 insertions(+)
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Patch

diff --git a/drivers/mmc/core/sdio.c b/drivers/mmc/core/sdio.c
index ce6cc47..01255ef 100644
--- a/drivers/mmc/core/sdio.c
+++ b/drivers/mmc/core/sdio.c
@@ -1064,6 +1064,12 @@  static int mmc_sdio_runtime_resume(struct mmc_host *host)
 	return mmc_sdio_power_restore(host);
 }
 
+static int mmc_sdio_reset(struct mmc_host *host)
+{
+	mmc_power_cycle(host, host->card->ocr);
+	return mmc_sdio_power_restore(host);
+}
+
 static const struct mmc_bus_ops mmc_sdio_ops = {
 	.remove = mmc_sdio_remove,
 	.detect = mmc_sdio_detect,
@@ -1074,6 +1080,7 @@  static const struct mmc_bus_ops mmc_sdio_ops = {
 	.runtime_resume = mmc_sdio_runtime_resume,
 	.power_restore = mmc_sdio_power_restore,
 	.alive = mmc_sdio_alive,
+	.reset = mmc_sdio_reset,
 };