[PATCH v3 0/2] drm/tyr: allow mismatched buffers for dev_query

[Deborah Brouwer]

Panthor UAPI for DRM_IOCTL_TYR_DEV_QUERY allows userspace to provide
a smaller or larger buffer than the kernel needs. Revise Tyr's
implementation to match the expected UAPI behaviour.

Signed-off-by: Deborah Brouwer <deborah.brouwer@xxxxxxxxxxxxx>
---
Changes in v3:
- replace "as" cast with lossless u32_as_usize()
- Link to v2: https://lore.kernel.org/r/20261015-b4-dev_query_fixes-v2-0-e3e6d25050cb@xxxxxxxxxxxxx

Changes in v2:
- Added #[inline] to UserSliceWriter::clear()
- Link to v1: https://lore.kernel.org/r/20261014-b4-dev_query_fixes-v1-0-92043100b472@xxxxxxxxxxxxx

---
Deborah Brouwer (2):
      rust: uaccess: add UserSliceWriter::clear()
      drm/tyr: allow userspace buffers to be mismatched

 drivers/gpu/drm/tyr/file.rs | 47 +++++++++++++++++++++++++++++++++++++--------
 rust/helpers/uaccess.c      |  6 ++++++
 rust/kernel/uaccess.rs      | 24 +++++++++++++++++++++++
 3 files changed, 69 insertions(+), 8 deletions(-)
---
base-commit: 3497a403264b094ebd61b8b755165d56e7d9dc37
change-id: 20261014-b4-dev_query_fixes-4e0ab024294a

Best regards,
-- 
Deborah Brouwer <deborah.brouwer@xxxxxxxxxxxxx>