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Chun-Shian Tsai



----- Original Message ----- 
From: "Kumar, Anil" <anilkumar.v@ti.com>
To: <linux-watchdog@vger.kernel.org>; <linux-kernel@vger.kernel.org>; 
<davinci-linux-open-source@linux.davincidsp.com>
Cc: <wim@iguana.be>
Sent: Monday, February 18, 2013 11:42 AM
Subject: RE: [PATCH V2] watchdog: davinci_wdt: update to devm_* API


Hi,

On Fri, Feb 08, 2013 at 13:09:30, Kumar, Anil wrote:
> Update the code to use devm_* API so that driver
> core will manage resources.
>
> Signed-off-by: Kumar, Anil <anilkumar.v@ti.com>
> ---
> This patch applies on top of v3.8-rc6.
>
> Tested on da850 EVM.
>
> Changes for V2:
>  - Use return -EADDRNOTAVAIL in case of devm_request_and_ioremap() fail.
>  - Use devm_clk_get() instead of clk_get().
>  - Revert back the change for *dev.
>  - Removes static type for "wdt_mem" structure as it is used only
>    inside the function now.
>

Gentle Ping. As there are no review comments on this patch,
Could you please pull this patch ?


> :100644 100644 e8e8724... 7df1fdc... M drivers/watchdog/davinci_wdt.c
>  drivers/watchdog/davinci_wdt.c |   29 ++++++-----------------------
>  1 files changed, 6 insertions(+), 23 deletions(-)
>
> diff --git a/drivers/watchdog/davinci_wdt.c 
> b/drivers/watchdog/davinci_wdt.c
> index e8e8724..7df1fdc 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 +200,11 @@ static struct miscdevice davinci_wdt_miscdev = {
>
>  static int davinci_wdt_probe(struct platform_device *pdev)
>  {
> - int ret = 0, size;
> + int ret = 0;
>  struct device *dev = &pdev->dev;
> + struct resource  *wdt_mem;
>
> - wdt_clk = clk_get(dev, NULL);
> + wdt_clk = devm_clk_get(dev, NULL);
>  if (WARN_ON(IS_ERR(wdt_clk)))
>  return PTR_ERR(wdt_clk);
>
> @@ -221,43 +221,26 @@ static int davinci_wdt_probe(struct platform_device 
> *pdev)
>  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(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;
> - return -ENOMEM;
> + dev_err(dev, "ioremap failed\n");
> + return -EADDRNOTAVAIL;
>  }
>
>  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;
>  } else {
>  set_bit(WDT_DEVICE_INITED, &wdt_status);
>  }
>
> - 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);
>
>  return 0;
>  }
> -- 
> 1.7.4.1
>
>

Thanks,
Anil
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