[RFC PATCH v3.1 03/27] mmc: core: UHS-II support, skip set_chip_select()

From: AKASHI Takahiro
Date: Thu Nov 05 2020 - 21:28:10 EST


mmc_set_chip_select() should be called only in UHS-II mode,
and not for UHS-II mode.

Signed-off-by: Ben Chuang <ben.chuang@xxxxxxxxxxxxxxxxxxx>
Signed-off-by: AKASHI Takahiro <takahiro.akashi@xxxxxxxxxx>
---
drivers/mmc/core/core.c | 6 ++++--
1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/drivers/mmc/core/core.c b/drivers/mmc/core/core.c
index 5541ed956c4d..4e12bd98fc08 100644
--- a/drivers/mmc/core/core.c
+++ b/drivers/mmc/core/core.c
@@ -898,8 +898,10 @@ static inline void mmc_set_ios(struct mmc_host *host)
*/
void mmc_set_chip_select(struct mmc_host *host, int mode)
{
- host->ios.chip_select = mode;
- mmc_set_ios(host);
+ if (!(host->flags & MMC_UHS2_INITIALIZED)) {
+ host->ios.chip_select = mode;
+ mmc_set_ios(host);
+ }
}

/*
--
2.28.0