Using devm_ioremap_resource() API should actually be preferred over
devm_ioremap(), since the former request the mem region first and then
gives back the ioremap'ed memory pointer.
devm_ioremap_resource() calls request_mem_region(), therby preventing
other drivers to make any overlapping call to the same region.
Signed-off-by: Vivek Gautam <gautam.vivek@xxxxxxxxxxx>
---
drivers/usb/host/ohci-exynos.c | 7 +++----
1 file changed, 3 insertions(+), 4 deletions(-)
diff --git a/drivers/usb/host/ohci-exynos.c b/drivers/usb/host/ohci-exynos.c
index 9cf80cb..dec691d 100644
--- a/drivers/usb/host/ohci-exynos.c
+++ b/drivers/usb/host/ohci-exynos.c
@@ -120,10 +120,9 @@ skip_phy:
hcd->rsrc_start = res->start;
hcd->rsrc_len = resource_size(res);
- hcd->regs = devm_ioremap(&pdev->dev, res->start, hcd->rsrc_len);
- if (!hcd->regs) {
- dev_err(&pdev->dev, "Failed to remap I/O memory\n");
- err = -ENOMEM;
+ hcd->regs = devm_ioremap_resource(&pdev->dev, res);
+ if (IS_ERR(hcd->regs)) {
+ err = PTR_ERR(hcd->regs);
goto fail_io;
}
--
1.7.10.4
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