From 577f85e2bba093084d5d2af6047aeb328d708d9b Mon Sep 17 00:00:00 2001 From: Tomasz Figa Date: Tue, 2 Aug 2016 19:46:28 +0900 Subject: [PATCH] gallium/winsys/kms: Look up the GEM handle after importing a prime FD drmPrimeHandleToFD() will return the same GEM handle every time the same buffer is imported, even from a different prime FD. Since GEM handles are not reference counted, we need to make sure that each GEM handle is referenced only by one display target struct, by looking it up in kms_sw->bo_list first and bumping the refcount of the found dt on hit and falling back to creating a new dt only on miss. v2: Split into separate function. Use helper function for lookup. v3 [Emil Velikov]: Rename kms_sw_displaytarget_{lookup,find_and_ref} (Jordan) Signed-off-by: Tomasz Figa CC: Reviewed-by: Hans de Goede (v2) Signed-off-by: Emil Velikov --- src/gallium/winsys/sw/kms-dri/kms_dri_sw_winsys.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/src/gallium/winsys/sw/kms-dri/kms_dri_sw_winsys.c b/src/gallium/winsys/sw/kms-dri/kms_dri_sw_winsys.c index 36ed049f82a..07eca990d04 100644 --- a/src/gallium/winsys/sw/kms-dri/kms_dri_sw_winsys.c +++ b/src/gallium/winsys/sw/kms-dri/kms_dri_sw_winsys.c @@ -244,6 +244,10 @@ kms_sw_displaytarget_add_from_prime(struct kms_sw_winsys *kms_sw, int fd, if (ret) return NULL; + kms_sw_dt = kms_sw_displaytarget_find_and_ref(kms_sw, handle); + if (kms_sw_dt) + return kms_sw_dt; + kms_sw_dt = CALLOC_STRUCT(kms_sw_displaytarget); if (!kms_sw_dt) return NULL; -- 2.30.2