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drm/etnaviv: Check for platform_device_register_simple() failure 

platform_device_register_simple() may fail, so we should better
check its return value and propagate it in the case of error.

Cc: <stable@vger.kernel.org>
Fixes: 246774d17f ("drm/etnaviv: remove the need for a gpu-subsystem DT node")
Signed-off-by: Fabio Estevam <fabio.estevam@nxp.com>
Reviewed-by: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
This commit is contained in:
Fabio Estevam 2018-06-27 10:07:45 -03:00 committed by Lucas Stach
parent ce397d215c
commit 45a0faaba9
1 changed files with 18 additions and 3 deletions
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21
drivers/gpu/drm/etnaviv/etnaviv_drv.c
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@ -631,8 +631,11 @@ static struct platform_driver etnaviv_platform_driver = {
},
};
static struct platform_device *etnaviv_drm;
static int __init etnaviv_init(void)
{
struct platform_device *pdev;
int ret;
struct device_node *np;
@ -644,7 +647,7 @@ static int __init etnaviv_init(void)
ret = platform_driver_register(&etnaviv_platform_driver);
if (ret != 0)
platform_driver_unregister(&etnaviv_gpu_driver);
goto unregister_gpu_driver;
/*
* If the DT contains at least one available GPU device, instantiate
@ -653,12 +656,24 @@ static int __init etnaviv_init(void)
for_each_compatible_node(np, NULL, "vivante,gc") {
if (!of_device_is_available(np))
continue;
platform_device_register_simple("etnaviv", -1, NULL, 0);
pdev = platform_device_register_simple("etnaviv", -1,
NULL, 0);
if (IS_ERR(pdev)) {
ret = PTR_ERR(pdev);
of_node_put(np);
goto unregister_platform_driver;
}
etnaviv_drm = pdev;
of_node_put(np);
break;
}
return 0;
unregister_platform_driver:
platform_driver_unregister(&etnaviv_platform_driver);
unregister_gpu_driver:
platform_driver_unregister(&etnaviv_gpu_driver);
return ret;
}
module_init(etnaviv_init);