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drm/fsl-dcu: check for clk_prepare_enable() error 

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@nxp.com>
Signed-off-by: Stefan Agner <stefan@agner.ch>
This commit is contained in:
Fabio Estevam 2016-12-28 14:48:48 -02:00 committed by Stefan Agner
parent 5d2883d51d
commit ef15d36154
1 changed files with 6 additions and 2 deletions
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8
drivers/gpu/drm/fsl-dcu/fsl_tcon.c
View File

@ -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;