From: Fabio Estevam <fabio.estevam@xxxxxxx>
clk_prepare_enable() may fail, so we should better check its return
value.
Also place the of_node_put() function right after clk_prepare_enable(),
in order to avoid calling of_node_put() twice in case clk_prepare_enable()
fails.
Signed-off-by: Fabio Estevam <fabio.estevam@xxxxxxx>
---
drivers/gpu/drm/fsl-dcu/fsl_tcon.c | 8 ++++++--
1 file changed, 6 insertions(+), 2 deletions(-)
diff --git a/drivers/gpu/drm/fsl-dcu/fsl_tcon.c b/drivers/gpu/drm/fsl-dcu/fsl_tcon.c
index 2fbb7ee..b3d70a6 100644
--- a/drivers/gpu/drm/fsl-dcu/fsl_tcon.c
+++ b/drivers/gpu/drm/fsl-dcu/fsl_tcon.c
@@ -87,9 +87,13 @@ struct fsl_tcon *fsl_tcon_init(struct device *dev)
goto err_node_put;
}
- of_node_put(np);
- clk_prepare_enable(tcon->ipg_clk);
+ ret = clk_prepare_enable(tcon->ipg_clk);
+ if (ret) {
+ dev_err(dev, "Couldn't enable the TCON clock\n");
+ goto err_node_put;
+ }
+ of_node_put(np);
dev_info(dev, "Using TCON in bypass mode\n");
return tcon;
--
2.7.4
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