Hi Corey,
Thanks for your reply !
On 2020/7/21 3:52, Corey Minyard wrote:
> On Mon, Jul 20, 2020 at 10:03:25AM +0800, Xiongfeng Wang wrote:
>> When I cat some ipmi_watchdog parameters by sysfs, it displays as
>> follows. It's better to add a newline for easy reading.
>>
>> root@(none):/# cat /sys/module/ipmi_watchdog/parameters/action
>> resetroot@(none):/# cat /sys/module/ipmi_watchdog/parameters/preaction
>> pre_noneroot@(none):/# cat /sys/module/ipmi_watchdog/parameters/preop
>> preop_noneroot@(none):/#
>
> Yeah, that's not consistent with other things displayed in the kernel.
>
>>
>> Signed-off-by: Xiongfeng Wang <wangxiongfe...@huawei.com>
>> ---
>> drivers/char/ipmi/ipmi_watchdog.c | 8 ++++++--
>> 1 file changed, 6 insertions(+), 2 deletions(-)
>>
>> diff --git a/drivers/char/ipmi/ipmi_watchdog.c
>> b/drivers/char/ipmi/ipmi_watchdog.c
>> index 55986e1..3e05a1d 100644
>> --- a/drivers/char/ipmi/ipmi_watchdog.c
>> +++ b/drivers/char/ipmi/ipmi_watchdog.c
>> @@ -232,12 +232,16 @@ static int set_param_str(const char *val, const struct
>> kernel_param *kp)
>> static int get_param_str(char *buffer, const struct kernel_param *kp)
>> {
>> action_fn fn = (action_fn) kp->arg;
>> - int rv;
>> + int rv, len;
>>
>> rv = fn(NULL, buffer);
>> if (rv)
>> return rv;
>> - return strlen(buffer);
>> +
>> + len = strlen(buffer);
>> + len += sprintf(buffer + len, "\n");
>
> sprintf is kind of overkill to stick a \n on the end of a line. How
> about:
>
> buffer[len++] = '\n';
>
> Since you are returning the length, you shouldn't need to nil terminate
> the string.
Thanks for your advice. I will change it in the next version.
>
> An unrelated question: Are you using any of the special functions of the
> IPMI watchdog, like the pretimeout?
I am not using any special functions of the IPMI watchdog. It's just that I cat
the parameters below 'ipmi_watchdog' and find we can add a newline here.
Thanks,
Xiongfeng
>
> -corey
>
>> +
>> + return len;
>> }
>>
>>
>> --
>> 1.7.12.4
>>
>
> .
>
