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pwm: sunxi: Use of_device_get_match_data()

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The usage of of_device_get_match_data reduce the code size a bit.
Furthermore, it prevents an improbable dereference when
of_match_device() returns NULL.

Signed-off-by: Corentin Labbe <clabbe.montjoie@gmail.com>
Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
This commit is contained in:
Corentin Labbe 2017-10-21 19:38:12 +02:00 committed by Thierry Reding
parent 1b3d9a93ed
commit df4f6e8c9f
1 changed files with 4 additions and 4 deletions
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8
drivers/pwm/pwm-sun4i.c
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@ -368,14 +368,15 @@ static int sun4i_pwm_probe(struct platform_device *pdev)
struct sun4i_pwm_chip *pwm;
struct resource *res;
int ret;
const struct of_device_id *match;
match = of_match_device(sun4i_pwm_dt_ids, &pdev->dev);
pwm = devm_kzalloc(&pdev->dev, sizeof(*pwm), GFP_KERNEL);
if (!pwm)
return -ENOMEM;
pwm->data = of_device_get_match_data(&pdev->dev);
if (!pwm->data)
return -ENODEV;
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
pwm->base = devm_ioremap_resource(&pdev->dev, res);
if (IS_ERR(pwm->base))
@ -385,7 +386,6 @@ static int sun4i_pwm_probe(struct platform_device *pdev)
if (IS_ERR(pwm->clk))
return PTR_ERR(pwm->clk);
pwm->data = match->data;
pwm->chip.dev = &pdev->dev;
pwm->chip.ops = &sun4i_pwm_ops;
pwm->chip.base = -1;