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SubjectRe: [PATCH V2] regulator: fixed: update to devm_* API
Hi Manish,

On Tue, Jan 28, 2014 at 08:42:00AM +0530, Manish Badarkhe wrote:
> Update the code to use devm_* API so that driver core will manage
> resources.
>
> Signed-off-by: Manish Badarkhe <badarkhe.manish@gmail.com>
> ---
> Changes since V1:
> 1. Updated driver to use "devm_kzalloc" to "kstrdup".
> 2. Updated commit message.
>
> Not tested on any board.
>
> :100644 100644 5ea64b9... e9763a4... M drivers/regulator/fixed.c
> drivers/regulator/fixed.c | 42 ++++++++++++------------------------------
> 1 file changed, 12 insertions(+), 30 deletions(-)
>
> diff --git a/drivers/regulator/fixed.c b/drivers/regulator/fixed.c
> index 5ea64b9..e9763a4 100644
> --- a/drivers/regulator/fixed.c
> +++ b/drivers/regulator/fixed.c
> @@ -132,15 +132,15 @@ static int reg_fixed_voltage_probe(struct platform_device *pdev)
> GFP_KERNEL);
> if (drvdata == NULL) {
> dev_err(&pdev->dev, "Failed to allocate device data\n");
> - ret = -ENOMEM;
> - goto err;
> + return -ENOMEM;
> }
>
> - drvdata->desc.name = kstrdup(config->supply_name, GFP_KERNEL);
> + drvdata->desc.name = devm_kzalloc(&pdev->dev,
> + strlen(config->supply_name) + 1,
> + GFP_KERNEL);
> if (drvdata->desc.name == NULL) {
> dev_err(&pdev->dev, "Failed to allocate supply name\n");
> - ret = -ENOMEM;
> - goto err;
> + return -ENOMEM;
> }

Umm, I am fairly certain that devm_kzalloc() can't be used as a
substitute for kstrdup, at least not without accompanying memcpy.

Thanks.

--
Dmitry


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