This patch introduces the use of managed interface devm_ioremap_resource
for ioremap_nocache and request_mem_region and removes the corresponding
free functions in the probe and remove functions.
Signed-off-by: Himangi Saraogi <himangi774@xxxxxxxxx>
---
drivers/usb/host/xhci-plat.c | 25 +++++--------------------
1 file changed, 5 insertions(+), 20 deletions(-)
diff --git a/drivers/usb/host/xhci-plat.c b/drivers/usb/host/xhci-plat.c
index 29d8adb..31d14a5 100644
--- a/drivers/usb/host/xhci-plat.c
+++ b/drivers/usb/host/xhci-plat.c
@@ -140,18 +140,11 @@ static int xhci_plat_probe(struct platform_device *pdev)
hcd->rsrc_start = res->start;
hcd->rsrc_len = resource_size(res);
- if (!request_mem_region(hcd->rsrc_start, hcd->rsrc_len,
- driver->description)) {
- dev_dbg(&pdev->dev, "controller already in use\n");
- ret = -EBUSY;
- goto put_hcd;
- }
-
- hcd->regs = ioremap_nocache(hcd->rsrc_start, hcd->rsrc_len);
- if (!hcd->regs) {
+ hcd->regs = devm_ioremap_resource(&pdev->dev, res);
+ if (IS_ERR(hcd->regs)) {
dev_dbg(&pdev->dev, "error mapping memory\n");
- ret = -EFAULT;
- goto release_mem_region;
+ ret = PTR_ERR(hcd->regs);
+ goto put_hcd;
}
/*
@@ -162,7 +155,7 @@ static int xhci_plat_probe(struct platform_device *pdev)
if (!IS_ERR(clk)) {
ret = clk_prepare_enable(clk);
if (ret)
- goto unmap_registers;
+ goto put_hcd;
}
ret = usb_add_hcd(hcd, irq, IRQF_SHARED);
@@ -207,12 +200,6 @@ disable_clk:
if (!IS_ERR(clk))
clk_disable_unprepare(clk);
-unmap_registers:
- iounmap(hcd->regs);
-
-release_mem_region:
- release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
-
put_hcd:
usb_put_hcd(hcd);
@@ -231,8 +218,6 @@ static int xhci_plat_remove(struct platform_device *dev)
usb_remove_hcd(hcd);
if (!IS_ERR(clk))
clk_disable_unprepare(clk);
- iounmap(hcd->regs);
- release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
usb_put_hcd(hcd);
kfree(xhci);
--
1.9.1
--
To unsubscribe from this list: send the line "unsubscribe linux-usb" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
