From: Leilk Liu <leilk.liu@mediatek.com>
Date: Mon, 24 Aug 2015 03:45:17 +0000 (+0800)
Subject: spi: mediatek: add PM clk_prepare_enable fail flow
X-Git-Tag: v4.3-rc3~25^2~1^5~6
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=13da5a0b72ea66c74483966ff91718ae0a9c0703;p=profile%2Fcommon%2Fplatform%2Fkernel%2Flinux-artik7.git

spi: mediatek: add PM clk_prepare_enable fail flow

This patch adds PM clk_prepare_enable fail flow.

Signed-off-by: Leilk Liu <leilk.liu@mediatek.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
---

diff --git a/drivers/spi/spi-mt65xx.c b/drivers/spi/spi-mt65xx.c
index 81b75b9..14112a5 100644
--- a/drivers/spi/spi-mt65xx.c
+++ b/drivers/spi/spi-mt65xx.c
@@ -665,8 +665,10 @@ static int mtk_spi_resume(struct device *dev)
 
 	if (!pm_runtime_suspended(dev)) {
 		ret = clk_prepare_enable(mdata->spi_clk);
-		if (ret < 0)
+		if (ret < 0) {
+			dev_err(dev, "failed to enable spi_clk (%d)\n", ret);
 			return ret;
+		}
 	}
 
 	ret = spi_master_resume(master);
@@ -692,8 +694,15 @@ static int mtk_spi_runtime_resume(struct device *dev)
 {
 	struct spi_master *master = dev_get_drvdata(dev);
 	struct mtk_spi *mdata = spi_master_get_devdata(master);
+	int ret;
+
+	ret = clk_prepare_enable(mdata->spi_clk);
+	if (ret < 0) {
+		dev_err(dev, "failed to enable spi_clk (%d)\n", ret);
+		return ret;
+	}
 
-	return clk_prepare_enable(mdata->spi_clk);
+	return 0;
 }
 #endif /* CONFIG_PM */