2018-01-18 18:28 GMT+08:00 Arnd Bergmann <arnd@xxxxxxxx>:
> On Mon, Jan 15, 2018 at 6:53 AM, Greentime Hu <green.hu@xxxxxxxxx> wrote:
>> From: Greentime Hu <greentime@xxxxxxxxxxxxx>
>>
>> This patch adds VDSO support. The VDSO code is currently used for
>> sys_rt_sigreturn() and optimised gettimeofday() (using the SoC timer counter).
>>
>> Signed-off-by: Vincent Chen <vincentc@xxxxxxxxxxxxx>
>> Signed-off-by: Greentime Hu <greentime@xxxxxxxxxxxxx>
>
> Acked-by: Arnd Bergmann <arnd@xxxxxxxx>
Dear Arnd Bergmann:
We find a small bug here which make LTP 20170929 clock_getres01
fail. The bug is in __vdso_clock_getres() function. When argument res
is NULL, -EFAULT error code is returned now. But, the returned
value is 0 for SyS_clock_getres under the same conditions.
Therefore, testcase thinks it is a bug.
I will modify the code as below and add it in the next version patch
if you think it is OK.
@@ -209,7 +209,7 @@ static notrace int clock_getres_fallback( ...
{
if (res == NULL)
- return -EFAULT;
+ return 0;
Thanks
Vincnet
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