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pwm: omap-dmtimer: put_device() after of_find_device_by_node()

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commit c7cb3a1dd53f63c64fb2b567d0be130b92a44d91 upstream.

This was found by coccicheck:

	drivers/pwm/pwm-omap-dmtimer.c:304:2-8: ERROR: missing put_device;
	call of_find_device_by_node on line 255, but without a corresponding
	object release within this function.

Reported-by: Markus Elfring <elfring@users.sourceforge.net>
Fixes: 6604c6556d ("pwm: Add PWM driver for OMAP using dual-mode timers")
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Uwe Kleine-König 2019-11-11 10:03:56 +01:00 • committed by Greg Kroah-Hartman
parent 39af044d1c
commit c72358a02f
1 changed files with 15 additions and 6 deletions
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21
drivers/pwm/pwm-omap-dmtimer.c
View file

@ -259,7 +259,7 @@ static int pwm_omap_dmtimer_probe(struct platform_device *pdev)
if (!timer_pdev) {
dev_err(&pdev->dev, "Unable to find Timer pdev\n");
ret = -ENODEV;
goto put;
goto err_find_timer_pdev;
}
timer_pdata = dev_get_platdata(&timer_pdev->dev);
@ -267,7 +267,7 @@ static int pwm_omap_dmtimer_probe(struct platform_device *pdev)
dev_dbg(&pdev->dev,
"dmtimer pdata structure NULL, deferring probe\n");
ret = -EPROBE_DEFER;
goto put;
goto err_platdata;
}
pdata = timer_pdata->timer_ops;
@ -286,19 +286,19 @@ static int pwm_omap_dmtimer_probe(struct platform_device *pdev)
!pdata->write_counter) {
dev_err(&pdev->dev, "Incomplete dmtimer pdata structure\n");
ret = -EINVAL;
goto put;
goto err_platdata;
}
if (!of_get_property(timer, "ti,timer-pwm", NULL)) {
dev_err(&pdev->dev, "Missing ti,timer-pwm capability\n");
ret = -ENODEV;
goto put;
goto err_timer_property;
}
dm_timer = pdata->request_by_node(timer);
if (!dm_timer) {
ret = -EPROBE_DEFER;
goto put;
goto err_request_timer;
}
omap = devm_kzalloc(&pdev->dev, sizeof(*omap), GFP_KERNEL);
@ -355,7 +355,14 @@ static int pwm_omap_dmtimer_probe(struct platform_device *pdev)
err_alloc_omap:
pdata->free(dm_timer);
put:
err_request_timer:
err_timer_property:
err_platdata:
put_device(&timer_pdev->dev);
err_find_timer_pdev:
of_node_put(timer);
return ret;
@ -375,6 +382,8 @@ static int pwm_omap_dmtimer_remove(struct platform_device *pdev)
omap->pdata->free(omap->dm_timer);
put_device(&omap->dm_timer_pdev->dev);
mutex_destroy(&omap->mutex);
return 0;