[PATCH v2] tests/intel/xe_oa: Remove buffer overflow guard from buffer-size tests

[Dixit, Ashutosh]

On Fri, 18 Apr 2025 13:52:11 -0700, Jonathan Cavitt wrote:
>
> The guard was a holdover from i915 that is not relevant to Xe because
> the buffer contents are preserved during an overflow.  Remove the check.
>
> v2: Keep check for non-zero-reason test (Ashutosh)

Reviewed-by: Ashutosh Dixit <ashutosh.dixit at intel.com>

> Closes: https://gitlab.freedesktop.org/drm/xe/kernel/-/issues/4541
> Suggested-by: Umesh Nerlige Ramappa <umesh.nerlige.ramappa at intel.com>
> Suggested-by: Ashutosh Dixit <ashutosh.dixit at intel.com>
> Signed-off-by: Jonathan Cavitt <jonathan.cavitt at intel.com>
> ---
>  tests/intel/xe_oa.c | 3 ++-
>  1 file changed, 2 insertions(+), 1 deletion(-)
>
> diff --git a/tests/intel/xe_oa.c b/tests/intel/xe_oa.c
> index 1fc8bfaafe..9db3d850c4 100644
> --- a/tests/intel/xe_oa.c
> +++ b/tests/intel/xe_oa.c
> @@ -2503,7 +2503,8 @@ test_non_zero_reason(const struct drm_xe_engine_class_instance *hwe, size_t oa_b
>	while (total_len < buf_size &&
>	       ((len = read(stream_fd, &buf[total_len], buf_size - total_len)) > 0 ||
>		(len == -1 && (errno == EINTR || errno == EIO)))) {
> -		if (errno == EIO) {
> +		/* Assert only for default OA buffer size */
> +		if (errno == EIO && !oa_buffer_size) {
>			oa_status = get_stream_status(stream_fd);
>			igt_assert(!(oa_status & DRM_XE_OASTATUS_BUFFER_OVERFLOW));
>		}
> --
> 2.43.0
>