lkml.org 
[lkml]   [2014]   [Jun]   [20]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
Date
From
Subject[PATCH] usb: host: xhci-plat: use devm_functions
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@gmail.com>
Acked-by: Julia Lawall <julia.lawall@lip6.fr>
---
drivers/usb/host/xhci-plat.c | 24 ++++--------------------
1 file changed, 4 insertions(+), 20 deletions(-)

diff --git a/drivers/usb/host/xhci-plat.c b/drivers/usb/host/xhci-plat.c
index 29d8adb..23eeb15 100644
--- a/drivers/usb/host/xhci-plat.c
+++ b/drivers/usb/host/xhci-plat.c
@@ -140,20 +140,12 @@ 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;
+ hcd->regs = devm_ioremap_resource(&pdev->dev, res);
+ if (IS_ERR(hcd->regs)) {
+ ret = PTR_ERR(hcd->regs);
goto put_hcd;
}

- hcd->regs = ioremap_nocache(hcd->rsrc_start, hcd->rsrc_len);
- if (!hcd->regs) {
- dev_dbg(&pdev->dev, "error mapping memory\n");
- ret = -EFAULT;
- goto release_mem_region;
- }
-
/*
* Not all platforms have a clk so it is not an error if the
* clock does not exists.
@@ -162,7 +154,7 @@ 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 +199,6 @@ 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 +217,6 @@ 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


\
 
 \ /
  Last update: 2014-06-20 20:01    [W:0.027 / U:0.444 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site