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pwm: omap-dmtimer: Return -EPROBE_DEFER if no dmtimer platform data

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If a pwm-omap-dmtimer is probed before the dmtimer it uses, the platform
data won't be set yet.

Fixes: ac30751df9 ("ARM: OMAP: pdata-quirks: Remove unused timer pdata")
Cc: <stable@vger.kernel.org> # 4.17+
Signed-off-by: David Rivshin <drivshin@allworx.com>
Acked-by: Pavel Machek <pavel@ucw.cz>
Tested-by: Pavel Machek <pavel@ucw.cz>
Acked-by: Ladislav Michl <ladis@linux-mips.org>
Tested-by: Andreas Kemnade <andreas@kemnade.info>
Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
This commit is contained in:
David Rivshin 2018-08-01 10:17:29 -04:00 committed by Thierry Reding
parent 19ad2b75c6
commit 43725feb59
1 changed files with 3 additions and 2 deletions
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5
drivers/pwm/pwm-omap-dmtimer.c
View file

@ -264,8 +264,9 @@ static int pwm_omap_dmtimer_probe(struct platform_device *pdev)
timer_pdata = dev_get_platdata(&timer_pdev->dev);
if (!timer_pdata) {
dev_err(&pdev->dev, "dmtimer pdata structure NULL\n");
ret = -EINVAL;
dev_dbg(&pdev->dev,
"dmtimer pdata structure NULL, deferring probe\n");
ret = -EPROBE_DEFER;
goto put;
}