Update the code to use devm_* API so that driver
core will manage resources.
Signed-off-by: Kumar, Anil <anilkumar.v@xxxxxx>
---
This patch applies on top of v3.8-rc6.
Tested on da850 EVM.
:100644 100644 e8e8724... 6ad76a3... M drivers/watchdog/davinci_wdt.c
drivers/watchdog/davinci_wdt.c | 34 +++++++++-------------------------
1 files changed, 9 insertions(+), 25 deletions(-)
diff --git a/drivers/watchdog/davinci_wdt.c b/drivers/watchdog/davinci_wdt.c
index e8e8724..6ad76a3 100644
--- a/drivers/watchdog/davinci_wdt.c
+++ b/drivers/watchdog/davinci_wdt.c
@@ -69,7 +69,6 @@ static unsigned long wdt_status;
#define WDT_REGION_INITED 2
#define WDT_DEVICE_INITED 3
-static struct resource *wdt_mem;
static void __iomem *wdt_base;
struct clk *wdt_clk;
@@ -201,10 +200,10 @@ static struct miscdevice davinci_wdt_miscdev = {
static int davinci_wdt_probe(struct platform_device *pdev)
{
- int ret = 0, size;
- struct device *dev = &pdev->dev;
+ int ret = 0;
+ static struct resource *wdt_mem;
- wdt_clk = clk_get(dev, NULL);
+ wdt_clk = clk_get(&pdev->dev, NULL);
if (WARN_ON(IS_ERR(wdt_clk)))
return PTR_ERR(wdt_clk);
@@ -213,49 +212,34 @@ static int davinci_wdt_probe(struct platform_device *pdev)
if (heartbeat < 1 || heartbeat > MAX_HEARTBEAT)
heartbeat = DEFAULT_HEARTBEAT;
- dev_info(dev, "heartbeat %d sec\n", heartbeat);
+ dev_info(&pdev->dev, "heartbeat %d sec\n", heartbeat);
wdt_mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
if (wdt_mem == NULL) {
- dev_err(dev, "failed to get memory region resource\n");
+ dev_err(&pdev->dev, "failed to get memory region resource\n");
return -ENOENT;
}
- size = resource_size(wdt_mem);
- if (!request_mem_region(wdt_mem->start, size, pdev->name)) {
- dev_err(dev, "failed to get memory region\n");
- return -ENOENT;
- }
-
- wdt_base = ioremap(wdt_mem->start, size);
+ wdt_base = devm_request_and_ioremap(&pdev->dev, wdt_mem);
if (!wdt_base) {
- dev_err(dev, "failed to map memory region\n");
- release_mem_region(wdt_mem->start, size);
- wdt_mem = NULL;
+ dev_err(&pdev->dev, "ioremap failed\n");
return -ENOMEM;
}
ret = misc_register(&davinci_wdt_miscdev);
if (ret < 0) {
- dev_err(dev, "cannot register misc device\n");
- release_mem_region(wdt_mem->start, size);
- wdt_mem = NULL;
+ dev_err(&pdev->dev, "cannot register misc device\n");
} else {
set_bit(WDT_DEVICE_INITED, &wdt_status);
+ return ret;
}
- iounmap(wdt_base);
return ret;
}
static int davinci_wdt_remove(struct platform_device *pdev)
{
misc_deregister(&davinci_wdt_miscdev);
- if (wdt_mem) {
- release_mem_region(wdt_mem->start, resource_size(wdt_mem));
- wdt_mem = NULL;
- }
-
clk_disable_unprepare(wdt_clk);
clk_put(wdt_clk);
--
1.7.4.1
--
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