Re: [PATCH i-g-t] tests/kms_color: Unset plane fb on teardown, v2.

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It would be nice to have a common teardown function for all IGT tests.
Maybe in the future!

On Tue, 2017-10-03 at 16:15 +0200, Maarten Lankhorst wrote:
> Valgrind is slightly unhappy when we leave the fb set:
> ==1804== Invalid read of size 4
> ==1804==    at 0x122F83: igt_plane_get_fb_id (igt_kms.c:2074)
> ==1804==    by 0x122F83: igt_primary_plane_commit_legacy
> (igt_kms.c:2339)
> ==1804==    by 0x122F83: igt_plane_commit (igt_kms.c:2394)
> ==1804==    by 0x122F83: igt_pipe_commit (igt_kms.c:2435)
> ==1804==    by 0x122F83: do_display_commit (igt_kms.c:2667)
> ==1804==    by 0x12338D: igt_display_commit2 (igt_kms.c:2777)
> ==1804==    by 0x112F83: run_tests_for_pipe (kms_color.c:1053)
> ==1804==    by 0x11360F: __real_main1189 (kms_color.c:1206)
> ==1804==    by 0x110BC6: main (kms_color.c:1189)
> ==1804==  Address 0x1ffeffeb20 is on thread 1's stack
> ==1804==  160 bytes below stack pointer
> 
> Add the missing calls to igt_plane_set_fb, and fix the crash.
> 
> Changes since v1:
> - Fix compilation!
> Signed-off-by: Maarten Lankhorst <maarten.lankhorst@xxxxxxxxxxxxxxx>
Reviewed-by: Mika Kahola <mika.kahola@xxxxxxxxx>

> ---
>  tests/kms_color.c | 18 ++++++++++++------
>  1 file changed, 12 insertions(+), 6 deletions(-)
> 
> diff --git a/tests/kms_color.c b/tests/kms_color.c
> index 060a60152808..bcd48d89875c 100644
> --- a/tests/kms_color.c
> +++ b/tests/kms_color.c
> @@ -342,7 +342,8 @@ static void test_pipe_degamma(data_t *data,
>  		 */
>  		igt_assert_crc_equal(&crc_fullgamma,
> &crc_fullcolors);
>  
> -		igt_output_set_pipe(output, PIPE_ANY);
> +		igt_plane_set_fb(primary, NULL);
> +		igt_output_set_pipe(output, PIPE_NONE);
>  	}
>  
>  	free(degamma_linear);
> @@ -420,7 +421,8 @@ static void test_pipe_gamma(data_t *data,
>  		 */
>  		igt_assert_crc_equal(&crc_fullgamma,
> &crc_fullcolors);
>  
> -		igt_output_set_pipe(output, PIPE_ANY);
> +		igt_plane_set_fb(primary, NULL);
> +		igt_output_set_pipe(output, PIPE_NONE);
>  	}
>  
>  	free(gamma_full);
> @@ -519,7 +521,8 @@ static void test_pipe_legacy_gamma(data_t *data,
>  						  legacy_lut_size,
> red_lut, green_lut, blue_lut), 0);
>  		igt_display_commit(&data->display);
>  
> -		igt_output_set_pipe(output, PIPE_ANY);
> +		igt_plane_set_fb(primary, NULL);
> +		igt_output_set_pipe(output, PIPE_NONE);
>  	}
>  
>  	free(red_lut);
> @@ -645,7 +648,8 @@ static void test_pipe_legacy_gamma_reset(data_t
> *data,
>  				   lut[i].blue == 0xffff);
>  		drmModeFreePropertyBlob(blob);
>  
> -		igt_output_set_pipe(output, PIPE_ANY);
> +		igt_plane_set_fb(primary, NULL);
> +		igt_output_set_pipe(output, PIPE_NONE);
>  	}
>  
>  	free(degamma_linear);
> @@ -731,7 +735,8 @@ static bool test_pipe_ctm(data_t *data,
>  		 */
>  		ret &= crc_equal(&crc_software, &crc_hardware);
>  
> -		igt_output_set_pipe(output, PIPE_ANY);
> +		igt_plane_set_fb(primary, NULL);
> +		igt_output_set_pipe(output, PIPE_NONE);
>  	}
>  
>  	free(degamma_linear);
> @@ -827,7 +832,8 @@ static void test_pipe_limited_range_ctm(data_t
> *data,
>  		 */
>  		igt_assert_crc_equal(&crc_full, &crc_limited);
>  
> -		igt_output_set_pipe(output, PIPE_ANY);
> +		igt_plane_set_fb(primary, NULL);
> +		igt_output_set_pipe(output, PIPE_NONE);
>  	}
>  
>  	free(gamma_linear);
-- 
Mika Kahola - Intel OTC

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