diff options
| author | Fabio Estevam <fabio.estevam@nxp.com> | 2017-10-07 22:36:51 +0000 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2017-11-08 10:08:35 +0100 |
| commit | 35c309e4c44686df7d0e776a8b095efc1d6d5641 (patch) | |
| tree | dc03696bacfb447cdbbb4d5dbd20c970420cee9f | |
| parent | 2b462a38bfeae50ebf1df120e1a7b2300d767188 (diff) | |
drm/fsl-dcu: check for clk_prepare_enable() error
[ Upstream commit ef15d36154cc741d7ded4ae4fa0cf7987354e313 ]
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>
Signed-off-by: Sasha Levin <alexander.levin@verizon.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | drivers/gpu/drm/fsl-dcu/fsl_tcon.c | 8 |
1 files 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 3194e544ee27..faacc813254c 100644 --- a/drivers/gpu/drm/fsl-dcu/fsl_tcon.c +++ b/drivers/gpu/drm/fsl-dcu/fsl_tcon.c @@ -89,9 +89,13 @@ 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; |