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SubjectRe: [PATCH] dax: fix default return code of range_parse()
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On 1/26/21 2:13 AM, Shiyang Ruan wrote:
> The return value of range_parse() indicates the size when it is
> positive. The error code should be negative.
>
> Signed-off-by: Shiyang Ruan <ruansy.fnst@cn.fujitsu.com>

Reviewed-by: Joao Martins <joao.m.martins@oracle.com>

Although, FWIW, there was another patch exactly like this a couple
months ago, albeit it didn't get pulled for some reason:

https://lore.kernel.org/linux-nvdimm/20201026110425.136629-1-zhangqilong3@huawei.com/

> ---
> drivers/dax/bus.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/dax/bus.c b/drivers/dax/bus.c
> index 737b207c9e30..3003558c1a8b 100644
> --- a/drivers/dax/bus.c
> +++ b/drivers/dax/bus.c
> @@ -1038,7 +1038,7 @@ static ssize_t range_parse(const char *opt, size_t len, struct range *range)
> {
> unsigned long long addr = 0;
> char *start, *end, *str;
> - ssize_t rc = EINVAL;
> + ssize_t rc = -EINVAL;
>
> str = kstrdup(opt, GFP_KERNEL);
> if (!str)
>

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