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drm/omap: fix issue w/ fb attached to multiple CRTCs

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When the fb is detached from one CRTC/plane, paddr was set back to
zero.  But really we don't want to do this because the fb could still
be attached to other CRTC/plane(s).  This originally worked like this
to catch cases of freeing a pinned fb (but with the refcnt'ing this
should no longer be needed).  Also, there is checking in the GEM code
for freeing a pinned GEM object, so this extra level of checking is
redundant.

Signed-off-by: Rob Clark <rob@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Rob Clark 2012-10-12 18:58:02 -05:00 committed by Greg Kroah-Hartman
parent faaa054036
commit b74af83dd2
1 changed files with 7 additions and 7 deletions
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14
drivers/staging/omapdrm/omap_fb.c
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@ -253,6 +253,7 @@ int omap_framebuffer_replace(struct drm_framebuffer *a,
int ret = 0, i, na, nb;
struct omap_framebuffer *ofba = to_omap_framebuffer(a);
struct omap_framebuffer *ofbb = to_omap_framebuffer(b);
uint32_t pinned_mask = 0;
na = a ? drm_format_num_planes(a->pixel_format) : 0;
nb = b ? drm_format_num_planes(b->pixel_format) : 0;
@ -263,25 +264,24 @@ int omap_framebuffer_replace(struct drm_framebuffer *a,
pa = (i < na) ? &ofba->planes[i] : NULL;
pb = (i < nb) ? &ofbb->planes[i] : NULL;
if (pa) {
if (pa)
unpin(arg, pa->bo);
pa->paddr = 0;
}
if (pb && !ret) {
ret = omap_gem_get_paddr(pb->bo, &pb->paddr, true);
if (!ret)
if (!ret) {
omap_gem_dma_sync(pb->bo, DMA_TO_DEVICE);
pinned_mask |= (1 << i);
}
}
}
if (ret) {
/* something went wrong.. unpin what has been pinned */
for (i = 0; i < nb; i++) {
struct plane *pb = &ofba->planes[i];
if (pb->paddr) {
if (pinned_mask & (1 << i)) {
struct plane *pb = &ofba->planes[i];
unpin(arg, pb->bo);
pb->paddr = 0;
}
}
}