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rtc: pl031: use devm_* for allocating memory and mapping resource

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Use the devm_* APIs for allocating memory and mapping the memory in
the probe function to relieve the driver from having to deal with
this in the cleanup paths.

Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
This commit is contained in:
Russell King 2017-09-29 11:22:05 +01:00 committed by Alexandre Belloni
parent eb508b36d5
commit 273c868e85
1 changed files with 6 additions and 11 deletions
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17
drivers/rtc/rtc-pl031.c
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@ -310,8 +310,6 @@ static int pl031_remove(struct amba_device *adev)
device_init_wakeup(&adev->dev, false);
free_irq(adev->irq[0], ldata);
rtc_device_unregister(ldata->rtc);
iounmap(ldata->base);
kfree(ldata);
amba_release_regions(adev);
return 0;
@ -329,18 +327,19 @@ static int pl031_probe(struct amba_device *adev, const struct amba_id *id)
if (ret)
goto err_req;
ldata = kzalloc(sizeof(struct pl031_local), GFP_KERNEL);
ldata = devm_kzalloc(&adev->dev, sizeof(struct pl031_local),
GFP_KERNEL);
if (!ldata) {
ret = -ENOMEM;
goto out;
}
ldata->vendor = vendor;
ldata->base = ioremap(adev->res.start, resource_size(&adev->res));
ldata->base = devm_ioremap(&adev->dev, adev->res.start,
resource_size(&adev->res));
if (!ldata->base) {
ret = -ENOMEM;
goto out_no_remap;
goto out;
}
amba_set_drvdata(adev, ldata);
@ -378,7 +377,7 @@ static int pl031_probe(struct amba_device *adev, const struct amba_id *id)
THIS_MODULE);
if (IS_ERR(ldata->rtc)) {
ret = PTR_ERR(ldata->rtc);
goto out_no_rtc;
goto out;
}
if (request_irq(adev->irq[0], pl031_interrupt,
@ -391,10 +390,6 @@ static int pl031_probe(struct amba_device *adev, const struct amba_id *id)
out_no_irq:
rtc_device_unregister(ldata->rtc);
out_no_rtc:
iounmap(ldata->base);
out_no_remap:
kfree(ldata);
out:
amba_release_regions(adev);
err_req: