linux-kernel - [PATCH] mmc: core: fix changing bus witdh in hs400es mode

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Date:   Thu, 2 Mar 2017 13:47:34 +0000
From:   Piotr Sroka <piotrs@...ence.com>
To:     <linux-mmc@...r.kernel.org>
CC:     Ulf Hansson <ulf.hansson@...aro.org>,
        Chaotian Jing <chaotian.jing@...iatek.com>,
        Shawn Lin <shawn.lin@...k-chips.com>,
        Gwendal Grignou <gwendal@...omium.org>,
        Dong Aisheng <aisheng.dong@....com>,
        <linux-kernel@...r.kernel.org>, Piotr Sroka <piotrs@...ence.com>
Subject: [PATCH] mmc: core: fix changing bus witdh in hs400es mode

Fix the code to avoid changing bus width if HS400ES mode is selected.

Signed-off-by: Piotr Sroka <piotrs@...ence.com>
---
 drivers/mmc/core/mmc.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/mmc/core/mmc.c b/drivers/mmc/core/mmc.c
index 7fd7228..c7d9c9f 100644
--- a/drivers/mmc/core/mmc.c
+++ b/drivers/mmc/core/mmc.c
@@ -1730,7 +1730,7 @@ static int mmc_init_card(struct mmc_host *host, u32 ocr,
 		err = mmc_select_hs400(card);
 		if (err)
 			goto free_card;
-	} else {
+	} else if (!mmc_card_hs400(card)) {
 		/* Select the desired bus width optionally */
 		err = mmc_select_bus_width(card);
 		if (err > 0 && mmc_card_hs(card)) {
-- 
2.2.2