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rtc: at91sam9: replace devm_ioremap by devm_ioremap_resource

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Replace devm_ioremap calls by devm_ioremap_resource which already check
resource consistency (resource != NULL) and print an error in case of
failure.

Signed-off-by: Boris BREZILLON <boris.brezillon@free-electrons.com>
Acked-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
Acked-by: Johan Hovold <johan@kernel.org>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
This commit is contained in:
Boris BREZILLON 2014-09-23 13:14:09 +02:00 • committed by Nicolas Ferre
parent 272f1dfa61
commit d41da3ee1a
1 changed files with 10 additions and 19 deletions
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29
drivers/rtc/rtc-at91sam9.c
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@ -306,18 +306,11 @@ static const struct rtc_class_ops at91_rtc_ops = {
*/
static int at91_rtc_probe(struct platform_device *pdev)
{
struct resource *r, *r_gpbr;
struct resource *r;
struct sam9_rtc *rtc;
int ret, irq;
u32 mr;
r = platform_get_resource(pdev, IORESOURCE_MEM, 0);
r_gpbr = platform_get_resource(pdev, IORESOURCE_MEM, 1);
if (!r || !r_gpbr) {
dev_err(&pdev->dev, "need 2 ressources\n");
return -ENODEV;
}
irq = platform_get_irq(pdev, 0);
if (irq < 0) {
dev_err(&pdev->dev, "failed to get interrupt resource\n");
@ -335,18 +328,16 @@ static int at91_rtc_probe(struct platform_device *pdev)
device_init_wakeup(&pdev->dev, 1);
platform_set_drvdata(pdev, rtc);
rtc->rtt = devm_ioremap(&pdev->dev, r->start, resource_size(r));
if (!rtc->rtt) {
dev_err(&pdev->dev, "failed to map registers, aborting.\n");
return -ENOMEM;
}
rtc->gpbr = devm_ioremap(&pdev->dev, r_gpbr->start,
resource_size(r_gpbr));
if (!rtc->gpbr) {
dev_err(&pdev->dev, "failed to map gpbr registers, aborting.\n");
return -ENOMEM;
}
r = platform_get_resource(pdev, IORESOURCE_MEM, 0);
rtc->rtt = devm_ioremap_resource(&pdev->dev, r);
if (IS_ERR(rtc->rtt))
return PTR_ERR(rtc->rtt);
r = platform_get_resource(pdev, IORESOURCE_MEM, 1);
rtc->gpbr = devm_ioremap_resource(&pdev->dev, r);
if (IS_ERR(rtc->gpbr))
return PTR_ERR(rtc->rtt);
mr = rtt_readl(rtc, MR);