From: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se>
Date: Mon, 26 Nov 2018 17:02:45 +0000 (+0100)
Subject: mmc: tmio: enable module clock before resetting when resuming
X-Git-Url: http://git.lede-project.org./?a=commitdiff_plain;h=ac1e25c870d30d43c626f2f9f073e74b383554d1;p=openwrt%2Fstaging%2Fblogic.git

mmc: tmio: enable module clock before resetting when resuming

On runtime power management resume, the host clock needs to be
enabled before calling tmio_mmc_reset. If the mmc device has a power
domain entry, the host clock is enabled via genpd_runtime_resume,
running before tmio_mmc_host_runtime_resume. If the mmc device has no
power domain entry, however, genpd_runtime_resume is not called. This
patch changes tmio_mmc_host_runtime_resume to enable the host clock
before calling tmio_mmc_reset.

Based on work from Masaharu Hayakawa.

Signed-off-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se>
Tested-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Reviewed-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Reviewed-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Reviewed-by: Simon Horman <horms+renesas@verge.net.au>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
---

diff --git a/drivers/mmc/host/tmio_mmc_core.c b/drivers/mmc/host/tmio_mmc_core.c
index a8f917f744fb..35acfa4f40b2 100644
--- a/drivers/mmc/host/tmio_mmc_core.c
+++ b/drivers/mmc/host/tmio_mmc_core.c
@@ -1326,8 +1326,8 @@ int tmio_mmc_host_runtime_resume(struct device *dev)
 {
 	struct tmio_mmc_host *host = dev_get_drvdata(dev);
 
-	host->reset(host);
 	tmio_mmc_clk_enable(host);
+	host->reset(host);
 
 	if (host->clk_cache)
 		host->set_clock(host, host->clk_cache);