From: Geert Uytterhoeven <geert+renesas@glider.be>
Date: Mon, 2 Jun 2014 13:38:08 +0000 (+0200)
Subject: spi: rspi: Don't consider DMA configuration failures fatal
X-Git-Tag: firefly_0821_release~176^2~3735^2~2^4~11
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=27e105a6006b8ce1b55709c5e24f63959981475d;p=firefly-linux-kernel-4.4.55.git

spi: rspi: Don't consider DMA configuration failures fatal

Fall back to PIO if DMA configuration failed.

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Mark Brown <broonie@linaro.org>
---

diff --git a/drivers/spi/spi-rspi.c b/drivers/spi/spi-rspi.c
index fdbd46d0c570..94a99ec7d989 100644
--- a/drivers/spi/spi-rspi.c
+++ b/drivers/spi/spi-rspi.c
@@ -1190,10 +1190,8 @@ static int rspi_probe(struct platform_device *pdev)
 	}
 
 	ret = rspi_request_dma(rspi, pdev);
-	if (ret < 0) {
-		dev_err(&pdev->dev, "rspi_request_dma failed.\n");
-		goto error3;
-	}
+	if (ret < 0)
+		dev_warn(&pdev->dev, "DMA not available, using PIO\n");
 
 	ret = devm_spi_register_master(&pdev->dev, master);
 	if (ret < 0) {