From: Marek Vasut <marex@denx.de>
Date: Fri, 24 Aug 2012 02:34:18 +0000 (+0200)
Subject: mxs/spi: Restart the block after unsuccessful transfer
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=c895db0fb2c9e77fd94ba7995e2a01652a91910c;p=GitHub%2Fmt8127%2Fandroid_kernel_alcatel_ttab.git

mxs/spi: Restart the block after unsuccessful transfer

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@denx.de>
Cc: Chris Ball <cjb@laptop.org>
Cc: Shawn Guo <shawn.guo@linaro.org>
Cc: Mark Brown <broonie@opensource.wolfsonmicro.com>
Cc: Fabio Estevam <fabio.estevam@freescale.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
---

diff --git a/drivers/spi/spi-mxs.c b/drivers/spi/spi-mxs.c
index 130a43688352..447f917fe66f 100644
--- a/drivers/spi/spi-mxs.c
+++ b/drivers/spi/spi-mxs.c
@@ -439,8 +439,10 @@ 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;
 	}