mmc: core: Add claiming of hosts during mmc_cache_ctrl
While calling mmc_cache_ctrl() a host is not claimed. This patch
adds the mmc_try_claim_host() for quick response in suspend.
Signed-off-by: Seungwon Jeon <tgih.jun@samsung.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
diff --git a/drivers/mmc/core/core.c b/drivers/mmc/core/core.c
index a2aa860..2205052 100644
--- a/drivers/mmc/core/core.c
+++ b/drivers/mmc/core/core.c
@@ -2355,7 +2355,13 @@
cancel_delayed_work(&host->disable);
cancel_delayed_work(&host->detect);
mmc_flush_scheduled_work();
- err = mmc_cache_ctrl(host, 0);
+ if (mmc_try_claim_host(host)) {
+ err = mmc_cache_ctrl(host, 0);
+ mmc_do_release_host(host);
+ } else {
+ err = -EBUSY;
+ }
+
if (err)
goto out;