[PATCH 3/6] usb: host: ehci-mv: Use devm_ioremap_resource instead of devm_ioremap

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



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/ehci-mv.c |    8 ++------
 1 file changed, 2 insertions(+), 6 deletions(-)

diff --git a/drivers/usb/host/ehci-mv.c b/drivers/usb/host/ehci-mv.c
index bd61612..5d03787 100644
--- a/drivers/usb/host/ehci-mv.c
+++ b/drivers/usb/host/ehci-mv.c
@@ -176,10 +176,8 @@ static int mv_ehci_probe(struct platform_device *pdev)
 		goto err_put_hcd;
 	}
 
-	ehci_mv->phy_regs = devm_ioremap(&pdev->dev, r->start,
-					 resource_size(r));
+	ehci_mv->phy_regs = devm_ioremap_resource(&pdev->dev, r);
 	if (!ehci_mv->phy_regs) {
-		dev_err(&pdev->dev, "failed to map phy I/O memory\n");
 		retval = -EFAULT;
 		goto err_put_hcd;
 	}
@@ -191,10 +189,8 @@ static int mv_ehci_probe(struct platform_device *pdev)
 		goto err_put_hcd;
 	}
 
-	ehci_mv->cap_regs = devm_ioremap(&pdev->dev, r->start,
-					 resource_size(r));
+	ehci_mv->cap_regs = devm_ioremap_resource(&pdev->dev, r);
 	if (ehci_mv->cap_regs == NULL) {
-		dev_err(&pdev->dev, "failed to map I/O memory\n");
 		retval = -EFAULT;
 		goto err_put_hcd;
 	}
-- 
1.7.10.4

--
To unsubscribe from this list: send the line "unsubscribe linux-tegra" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html




[Index of Archives]     [ARM Kernel]     [Linux ARM]     [Linux ARM MSM]     [Linux USB Devel]     [Video for Linux]     [Linux Audio Users]     [Yosemite News]     [Linux Kernel]     [Linux SCSI]

  Powered by Linux