From: Andrew Bresticker <abrestic@chromium.org>
Date: Tue, 16 Dec 2014 21:05:44 +0000 (-0800)
Subject: spi: img-spfi: Enable controller before starting TX DMA
X-Git-Tag: v3.19-rc3~21^2~2
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=c0e7dc21d33caa31296d1e4af1e99008359f1b64;p=karo-tx-linux.git

spi: img-spfi: Enable controller before starting TX DMA

It is recommended that the SPFI controller be enabled (i.e. setting
SPFI_EN in SPFI_CONTROL) before TX DMA begins.

Signed-off-by: Andrew Bresticker <abrestic@chromium.org>
Signed-off-by: Mark Brown <broonie@kernel.org>
---

diff --git a/drivers/spi/spi-img-spfi.c b/drivers/spi/spi-img-spfi.c
index b410499cddca..cd14556852bf 100644
--- a/drivers/spi/spi-img-spfi.c
+++ b/drivers/spi/spi-img-spfi.c
@@ -390,14 +390,14 @@ static int img_spfi_start_dma(struct spi_master *master,
 		dma_async_issue_pending(spfi->rx_ch);
 	}
 
+	spfi_start(spfi);
+
 	if (xfer->tx_buf) {
 		spfi->tx_dma_busy = true;
 		dmaengine_submit(txdesc);
 		dma_async_issue_pending(spfi->tx_ch);
 	}
 
-	spfi_start(spfi);
-
 	return 1;
 
 stop_dma: