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From: Matt Reimer <mreimer@sdgsystems.com>
To: u-boot@lists.denx.de
Subject: [U-Boot] [PATCH] mmc: sdhci: don't clobber adjacent registers
Date: Mon, 23 Feb 2015 14:56:58 -0700	[thread overview]
Message-ID: <1424728618-5651-1-git-send-email-mreimer@sdgsystems.com> (raw)
In-Reply-To: <59894801-EB21-4D2D-BB0F-173DB669610B@antoniou-consulting.com>

SDHCI_HOST_CONTROL is a byte-sized register, so don't write to it
as if it were a long, as that would result in clobbering the three
registers following.

Signed-off-by: Matt Reimer <mreimer@sdgsystems.com>
---
 drivers/mmc/sdhci.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/mmc/sdhci.c b/drivers/mmc/sdhci.c
index 82d7984..1f8917b 100644
--- a/drivers/mmc/sdhci.c
+++ b/drivers/mmc/sdhci.c
@@ -412,7 +412,7 @@ static int sdhci_init(struct mmc *mmc)
 	if (host->quirks & SDHCI_QUIRK_NO_CD) {
 		unsigned int status;
 
-		sdhci_writel(host, SDHCI_CTRL_CD_TEST_INS | SDHCI_CTRL_CD_TEST,
+		sdhci_writeb(host, SDHCI_CTRL_CD_TEST_INS | SDHCI_CTRL_CD_TEST,
 			SDHCI_HOST_CONTROL);
 
 		status = sdhci_readl(host, SDHCI_PRESENT_STATE);
-- 
1.7.9.5

  reply	other threads:[~2015-02-23 21:56 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-02-19 18:33 [U-Boot] Possible bug in sdhci.c Matt Reimer
2015-02-23 17:57 ` Pantelis Antoniou
2015-02-23 21:56   ` Matt Reimer [this message]
2015-03-02 18:31     ` [U-Boot] [PATCH] mmc: sdhci: don't clobber adjacent registers Matt Reimer
2015-03-02 18:31     ` Pantelis Antoniou
2015-03-18  7:53     ` Pantelis Antoniou

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