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SubjectRe: [PATCH v3] kernel/module.c: need return the first error code to upper caller when error occurs
Hello Maintainers:

Please help check the patch whether OK or not, when you have time.


Thanks.

On 05/17/2013 12:33 PM, Chen Gang wrote:
>
> When multiple errors occur, simplify_symbols() will return the last
> error code to the upper caller.
>
> In this case, better to return the first error code to the upper caller.
>
> Just like "using compiler": it will print all errors and warnings as
> much as it can, but the user usually mainly focus on the first error or
> warning. Since 'user' only can get one error return code, 'he/she'
> usually assume the error code will match the first error print line.
>
>
> Signed-off-by: Chen Gang <gang.chen@asianux.com>
> ---
> kernel/module.c | 6 ++++--
> 1 files changed, 4 insertions(+), 2 deletions(-)
>
> diff --git a/kernel/module.c b/kernel/module.c
> index e4ee1bf..9e6c96d 100644
> --- a/kernel/module.c
> +++ b/kernel/module.c
> @@ -1976,7 +1976,8 @@ static int simplify_symbols(struct module *mod, const struct load_info *info)
> pr_debug("Common symbol: %s\n", name);
> printk("%s: please compile with -fno-common\n",
> mod->name);
> - ret = -ENOEXEC;
> + if (!ret)
> + ret = -ENOEXEC;
> break;
>
> case SHN_ABS:
> @@ -1999,7 +2000,8 @@ static int simplify_symbols(struct module *mod, const struct load_info *info)
>
> printk(KERN_WARNING "%s: Unknown symbol %s (err %li)\n",
> mod->name, name, PTR_ERR(ksym));
> - ret = PTR_ERR(ksym) ?: -ENOENT;
> + if (!ret)
> + ret = PTR_ERR(ksym) ?: -ENOENT;
> break;
>
> default:
>


--
Chen Gang

Asianux Corporation


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