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From: Marek Vasut <marex-ynQEQJNshbs@public.gmane.org>
To: spi-devel-general-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org
Cc: Marek Vasut <marex-ynQEQJNshbs@public.gmane.org>,
	Fabio Estevam
	<fabio.estevam-KZfg59tc24xl57MIdRCFDg@public.gmane.org>,
	Shawn Guo <shawn.guo-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org>,
	Mark Brown
	<broonie-yzvPICuk2AATkU/dhu1WVueM+bqZidxxQQ4Iyu8u01E@public.gmane.org>,
	Chris Ball <cjb-2X9k7bc8m7Mdnm+yROfE0A@public.gmane.org>,
	linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org
Subject: [PATCH] mxs/spi: Restart the block after unsuccessful transfer
Date: Fri, 24 Aug 2012 04:34:18 +0200
Message-ID: <1345775658-9739-1-git-send-email-marex@denx.de> (raw)

Restart the SSP block in case the SSP transfer failed in any way.
The block hung in some cases otherwise.

Signed-off-by: Marek Vasut <marex-ynQEQJNshbs@public.gmane.org>
Cc: Chris Ball <cjb-2X9k7bc8m7Mdnm+yROfE0A@public.gmane.org>
Cc: Shawn Guo <shawn.guo-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org>
Cc: Mark Brown <broonie-yzvPICuk2AATkU/dhu1WVueM+bqZidxxQQ4Iyu8u01E@public.gmane.org>
Cc: Fabio Estevam <fabio.estevam-KZfg59tc24xl57MIdRCFDg@public.gmane.org>
---
 drivers/spi/spi-mxs.c |    4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/spi/spi-mxs.c b/drivers/spi/spi-mxs.c
index 746359e..8075683 100644
--- a/drivers/spi/spi-mxs.c
+++ b/drivers/spi/spi-mxs.c
@@ -445,8 +445,10 @@ static int mxs_spi_transfer_one(struct spi_master *master,
 		}
 
 		m->actual_length += t->len;
-		if (status)
+		if (status) {
+			stmp_reset_block(ssp->base);
 			break;
+		}
 
 		first = last = 0;
 	}
-- 
1.7.10.4


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Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2012-08-24  2:34 Marek Vasut [this message]
     [not found] ` <1345775658-9739-1-git-send-email-marex-ynQEQJNshbs@public.gmane.org>
2012-08-27 16:37   ` Mark Brown

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