My patch isn't needed any more. The last Jerome's patch titled
[PATCH] drm/radeon/kms: r600/r700 command stream checker
works well.
Cheers,
Oldřich.
On Wednesday 10 of February 2010 at 23:54:13, Oldřich Jedlička wrote:
> The current code causes failing of rendering (discovered on my KDE
> 4.4) with message:
>
> r600_cs_track_check:252 mask 0x0000000F | 0xFFFFFFFF no cb for 1
>
> The problem is in the check of "at least one component is enabled" in
> r600_cs_track_check() - it finds the first component and does not check
> the rest. My patch fixes this by introducing is_valid local variable
> and checking all enabled components. The check returns failure only
> when there is really no component enabled.
>
> Signed-off-by: Oldřich Jedlička <oldium....@seznam.cz>
> ---
> drivers/gpu/drm/radeon/r600_cs.c | 20 ++++++++++++--------
> 1 files changed, 12 insertions(+), 8 deletions(-)
>
> diff --git a/drivers/gpu/drm/radeon/r600_cs.c
> b/drivers/gpu/drm/radeon/r600_cs.c index 7cabb62..f1dab96 100644
> --- a/drivers/gpu/drm/radeon/r600_cs.c
> +++ b/drivers/gpu/drm/radeon/r600_cs.c
> @@ -233,6 +233,7 @@ static int r600_cs_track_check(struct radeon_cs_parser
> *p) struct r600_cs_track *track = p->track;
> u32 tmp;
> int r, i;
> + bool is_valid = false;
>
> /* on legacy kernel we don't perform advanced check */
> if (p->rdev == NULL)
> @@ -247,17 +248,20 @@ static int r600_cs_track_check(struct
> radeon_cs_parser *p) for (i = 0; i < 8; i++) {
> if ((tmp >> (i * 4)) & 0xF) {
> /* at least one component is enabled */
> - if (track->cb_color_bo[i] == NULL) {
> - dev_warn(p->dev, "%s:%d mask 0x%08X | 0x%08X no
> cb for %d\n",
> - __func__, __LINE__,
> track->cb_target_mask, track-
>cb_shader_mask, i);
> - return -EINVAL;
> + if (track->cb_color_bo[i] != NULL) {
> + /* perform rewrite of CB_COLOR[0-7]_SIZE */
> + r = r600_cs_track_validate_cb(p, i);
> + if (r)
> + return r;
> + is_valid = true;
> }
> - /* perform rewrite of CB_COLOR[0-7]_SIZE */
> - r = r600_cs_track_validate_cb(p, i);
> - if (r)
> - return r;
> }
> }
> + if (!is_valid) {
> + dev_warn(p->dev, "%s:%d mask 0x%08X | 0x%08X no cb found\n",
> + __func__, __LINE__, track->cb_target_mask, track-
>cb_shader_mask);
> + return -EINVAL;
> + }
> return 0;
> }
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