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authorHanjun Guo <hanjun.guo@linaro.org>2017-05-12 11:55:26 +0800
committerThomas Gleixner <tglx@linutronix.de>2017-05-12 10:25:37 +0200
commit5ba9b0a14132d0b8d97affe909f324045a968d03 (patch)
treee270fcf61d4427448e1dcb99770fd1ce6c216d38 /drivers/irqchip
parentd3b5d35290d729a2518af00feca867385a1b08fa (diff)
downloadlinux-5ba9b0a14132d0b8d97affe909f324045a968d03.tar.bz2
irqchip/mbigen: Fix memory mapping code
Some mbigens share memory regions, and devm_ioremap_resource does not allow to share resources which will break the probe of mbigen, in opposition to devm_ioremap. This patch restores back usage of devm_ioremap function, but with proper error handling and logging. Fixes: 216646e4d82e ("irqchip/mbigen: Fix return value check in mbigen_device_probe()") Signed-off-by: Hanjun Guo <hanjun.guo@linaro.org> Acked-by: Marc Zyngier <marc.zyngier@arm.com> Cc: Kefeng Wang <wangkefeng.wang@huawei.com> Cc: linuxarm@huawei.com Cc: Wei Yongjun <weiyongjun1@huawei.com> Cc: MaJun <majun258@huawei.com> Link: http://lkml.kernel.org/r/1494561328-39514-2-git-send-email-guohanjun@huawei.com Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'drivers/irqchip')
-rw-r--r--drivers/irqchip/irq-mbigen.c9
1 files changed, 6 insertions, 3 deletions
diff --git a/drivers/irqchip/irq-mbigen.c b/drivers/irqchip/irq-mbigen.c
index d2306c821ebb..0f5e66e96bd9 100644
--- a/drivers/irqchip/irq-mbigen.c
+++ b/drivers/irqchip/irq-mbigen.c
@@ -337,9 +337,12 @@ static int mbigen_device_probe(struct platform_device *pdev)
mgn_chip->pdev = pdev;
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
- mgn_chip->base = devm_ioremap_resource(&pdev->dev, res);
- if (IS_ERR(mgn_chip->base))
- return PTR_ERR(mgn_chip->base);
+ mgn_chip->base = devm_ioremap(&pdev->dev, res->start,
+ resource_size(res));
+ if (!mgn_chip->base) {
+ dev_err(&pdev->dev, "failed to ioremap %pR\n", res);
+ return -ENOMEM;
+ }
if (IS_ENABLED(CONFIG_OF) && pdev->dev.of_node)
err = mbigen_of_create_domain(pdev, mgn_chip);