Two changes in map() path fix a kernel crash and a map failure.

Patch 0 fixes error path handling which triggers a kernel crash.

Patch 1 fixes prealloc page table memory requirement for a mapping
which led to map failure due to running out of page table space.

Signed-off-by: Brajesh Gupta <brajesh.gupta@imgtec.com>
---
Changes in v4:
- Fixed trailers in commit message.
- Updated example of the issue in patch 2 commit message.
- Link to v3: https://lore.kernel.org/r/20260918-mmu_fix-v3-0-7b3d73aef041@imgtec.com

Changes in v3:
- Fix the description update suggested for patch 1 in v2.
- Link to v2: https://lore.kernel.org/r/20260918-mmu_fix-v2-0-f7c004fbe203@imgtec.com

Changes in v2:
- Update as per Alessio's feedback.
- Fixed variable name in the description. Move the error message to a new line.
- Link to v1: https://lore.kernel.org/r/20260902-mmu_fix-v1-0-c55a23fb7cab@imgtec.com

---
Brajesh Gupta (2):
      drm/imagination: Propagate map failures correctly from pvr_mmu_map_sgl()
      drm/imagination: Fix page count for page table for map() interface

 drivers/gpu/drm/imagination/pvr_mmu.c | 19 ++++++++++++-------
 drivers/gpu/drm/imagination/pvr_mmu.h |  2 +-
 drivers/gpu/drm/imagination/pvr_vm.c  |  4 ++--
 3 files changed, 15 insertions(+), 10 deletions(-)
---
base-commit: bd4f284df04d76fd65e57141cb1e6e7a49e4c3cb
change-id: 20260902-mmu_fix-3923aca60f60

Best regards,
--  
Brajesh Gupta <brajesh.gupta@imgtec.com>

On Tue, 22 Sep 2026 09:56:54 +0530, Brajesh Gupta wrote:
> Two changes in map() path fix a kernel crash and a map failure.
> 
> Patch 0 fixes error path handling which triggers a kernel crash.
> 
> Patch 1 fixes prealloc page table memory requirement for a mapping
> which led to map failure due to running out of page table space.
> 
> [...]

Applied to drm-misc-fixes, thanks!

[1/2] drm/imagination: Propagate map failures correctly from pvr_mmu_map_sgl()
      commit: 7b824c293a6b56de8285a97984c507cba56bc4c4
[2/2] drm/imagination: Fix page count for page table for map() interface
      commit: 0a8224058a5835297dcf4a46bbcd16f77a9fe424

Best regards,
-- 
Brajesh Gupta <brajesh.gupta@imgtec.com>