[PATCH] mtd: nand: gpmi: Release DMA channels on failure

[Fabio Estevam <festevam@gmail.com>]

From: Fabio Estevam <fabio.estevam@nxp.com>

release_dma_channels() should be called in the case of error in
gpmi_init() or bch_set_geometry(), because acquire_dma_channels() has
been called previously.

Handle the error cases correctly.

Signed-off-by: Fabio Estevam <fabio.estevam@nxp.com>
---
 drivers/mtd/nand/gpmi-nand/gpmi-nand.c | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

diff --git a/drivers/mtd/nand/gpmi-nand/gpmi-nand.c b/drivers/mtd/nand/gpmi-nand/gpmi-nand.c
index 2ef8979..acfa5f5 100644
--- a/drivers/mtd/nand/gpmi-nand/gpmi-nand.c
+++ b/drivers/mtd/nand/gpmi-nand/gpmi-nand.c
@@ -2137,20 +2137,25 @@ static int gpmi_pm_resume(struct device *dev)
 	ret = gpmi_init(this);
 	if (ret) {
 		dev_err(this->dev, "Error setting GPMI : %d\n", ret);
-		return ret;
+		goto release_dma_channels;
 	}
 
 	/* re-init the BCH registers */
 	ret = bch_set_geometry(this);
 	if (ret) {
 		dev_err(this->dev, "Error setting BCH : %d\n", ret);
-		return ret;
+		goto release_dma_channels;
 	}
 
 	/* re-init others */
 	gpmi_extra_init(this);
 
 	return 0;
+
+release_dma_channels:
+	release_dma_channels(this);
+	return ret;
+
 }
 #endif /* CONFIG_PM_SLEEP */
 
-- 
2.7.4