ANDROID: mmc: sdio: Disable retuning in sdio_reset_comm()
Since sdio_reset_comm() re-initializes the SDIO card, disable retuning
before idling and shutting down the card. Tuning will be re-enabled (if
necessary) in mmc_sdio_init_card().
BUG=chrome-os-partner:46444
TEST=With CL:311815, toggle WiFi on/off on Smaug and observe that the
WiFi card comes back up and is able to tune successfully.
Change-Id: Ib4a5cfd4d75fc9e3ed7bb3f1e2ffd30de16c5d28
Signed-off-by: Andrew Bresticker <abrestic@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/311797
Reviewed-by: Derek Basehore <dbasehore@chromium.org>
[briannorris: brought from Chromium kernel in 3.18 -> 4.4 rebase]
Signed-off-by: Brian Norris <briannorris@google.com>
diff --git a/drivers/mmc/core/sdio.c b/drivers/mmc/core/sdio.c
index 3241166..b5ec3c8 100644
--- a/drivers/mmc/core/sdio.c
+++ b/drivers/mmc/core/sdio.c
@@ -22,6 +22,7 @@
#include "core.h"
#include "bus.h"
+#include "host.h"
#include "sd.h"
#include "sdio_bus.h"
#include "mmc_ops.h"
@@ -1226,6 +1227,8 @@
printk("%s():\n", __func__);
mmc_claim_host(host);
+ mmc_retune_disable(host);
+
mmc_go_idle(host);
mmc_set_clock(host, host->f_min);