linux-kernel - [42/75] ARM: 7214/1: mmc: mmci: Fixup handling of MCI

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Date:	Tue, 03 Jan 2012 14:33:15 -0800
From:	Greg KH <gregkh@...e.de>
To:	linux-kernel@...r.kernel.org, stable@...r.kernel.org
Cc:	torvalds@...ux-foundation.org, akpm@...ux-foundation.org,
	alan@...rguk.ukuu.org.uk, Ulf Hansson <ulf.hansson@...ricsson.com>,
	Russell King <rmk+kernel@....linux.org.uk>
Subject: [42/75] ARM: 7214/1: mmc: mmci: Fixup handling of MCI_STARTBITERR

3.1-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Ulf Hansson <ulf.hansson@...ricsson.com>

commit b63038d6f4ca5d1849ce01d9fc5bb9cb426dec73 upstream.

The interrupt was previously enabled and then correctly cleared.
Now we also handle it correctly.

Tested-by: Linus Walleij <linus.walleij@...aro.org>
Signed-off-by: Ulf Hansson <ulf.hansson@...ricsson.com>
Signed-off-by: Russell King <rmk+kernel@....linux.org.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@...e.de>

---
 drivers/mmc/host/mmci.c |    8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

--- a/drivers/mmc/host/mmci.c
+++ b/drivers/mmc/host/mmci.c
@@ -673,7 +673,8 @@ mmci_data_irq(struct mmci_host *host, st
 	      unsigned int status)
 {
 	/* First check for errors */
-	if (status & (MCI_DATACRCFAIL|MCI_DATATIMEOUT|MCI_TXUNDERRUN|MCI_RXOVERRUN)) {
+	if (status & (MCI_DATACRCFAIL|MCI_DATATIMEOUT|MCI_STARTBITERR|
+		      MCI_TXUNDERRUN|MCI_RXOVERRUN)) {
 		u32 remain, success;
 
 		/* Terminate the DMA transfer */
@@ -953,8 +954,9 @@ static irqreturn_t mmci_irq(int irq, voi
 		dev_dbg(mmc_dev(host->mmc), "irq0 (data+cmd) %08x\n", status);
 
 		data = host->data;
-		if (status & (MCI_DATACRCFAIL|MCI_DATATIMEOUT|MCI_TXUNDERRUN|
-			      MCI_RXOVERRUN|MCI_DATAEND|MCI_DATABLOCKEND) && data)
+		if (status & (MCI_DATACRCFAIL|MCI_DATATIMEOUT|MCI_STARTBITERR|
+			      MCI_TXUNDERRUN|MCI_RXOVERRUN|MCI_DATAEND|
+			      MCI_DATABLOCKEND) && data)
 			mmci_data_irq(host, data, status);
 
 		cmd = host->cmd;


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