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SubjectRe: [PATCH v3] kernel/module.c: need return the first error code to upper caller when error occurs
Date
Chen Gang <gang.chen@asianux.com> writes:
> Hello Maintainers:
>
> Please help check the patch whether OK or not, when you have time.

Hi Chen,

There's nothing *wrong* with the patch, but I don't think it's
worthwhile. If this were your very first kernel patch, I'd probably
apply it just to encourage you, but you're not a newbie any more!

Cheers,
Rusty.

> 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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