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[v3,3/4] spi: mediatek: add PM clk_prepare_enable fail flow

Message ID 1440387918-22191-4-git-send-email-leilk.liu@mediatek.com (mailing list archive)
State New, archived
Headers show

Commit Message

Leilk Liu Aug. 24, 2015, 3:45 a.m. UTC 
This patch adds PM clk_prepare_enable fail flow.

Signed-off-by: Leilk Liu <leilk.liu@mediatek.com>
---
 drivers/spi/spi-mt65xx.c | 13 +++++++++++--
 1 file changed, 11 insertions(+), 2 deletions(-)
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Patch

diff --git a/drivers/spi/spi-mt65xx.c b/drivers/spi/spi-mt65xx.c
index f81618c..e14f583 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 */