linux-kernel - [PATCH v4 0/3] media: atomisp: refactoring and fixes for V4L2 compliance

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Message-ID: <20260107150858.79818-1-karthikey3608@gmail.com>
Date: Wed,  7 Jan 2026 20:38:55 +0530
From: Karthikey D Kadati <karthikey3608@...il.com>
To: Hans de Goede <hansg@...nel.org>,
	Mauro Carvalho Chehab <mchehab@...nel.org>
Cc: Dan Carpenter <dan.carpenter@...aro.org>,
	Sakari Ailus <sakari.ailus@...ux.intel.com>,
	linux-media@...r.kernel.org,
	linux-staging@...ts.linux.dev,
	linux-kernel@...r.kernel.org,
	Karthikey D Kadati <karthikey3608@...il.com>
Subject: [PATCH v4 0/3] media: atomisp: refactoring and fixes for V4L2 compliance

This patch series addresses maintainer feedback and fixes build errors
in the atomisp driver.

Patch 1: Standardizes the 'Bridge' structs significantly by using
v4l2_rect instead of custom shadow structs and aligning ia_css_region
members with V4L2 conventions.
Patch 2: Introduces a helper function for statistics buffer allocation
to reduce code duplication and centralize error handling logic.
Patch 3: Adds missing error propagation for IRQ enable and XNR
configuration to improve robustness.

Changes in v4:
- Drop overflow fix (long long casts) from Patch 1 to keep it a clean
  refactor/rename patch (Dan Carpenter).
- Fix extra new lines in commit messages (Dan Carpenter).
- Strictly wrap commit messages to 72 characters (Dan Carpenter).

Changes in v3:
- Remove unnecessary s32/u32 casts in atomisp_cmd.c (Dan Carpenter).
- Propagate error codes in atomisp_ioctl.c (Dan Carpenter).
- Update commit message for Patch 3 (Dan Carpenter).
- Wrap cover letter and commit messages to 75 characters (Dan Carpenter).
- Sent as a new thread.

Changes in v2:
- Split into a 3-patch series.
- Standardized internal CSS types.
- Fixed integer overflow safety.

This series is based on the latest staging/next tree and has been
verified with checkpatch.pl --strict.

Karthikey D Kadati (3):
  media: atomisp: replace shadow zoom structs with v4l2_rect
  media: atomisp: consolidate statistics buffer allocation
  media: atomisp: propagate errors from ISP xnr and IRQ enable

 .../media/atomisp/include/linux/atomisp.h     |  19 +--
 .../staging/media/atomisp/pci/atomisp_cmd.c   | 142 +++++++++---------
 .../staging/media/atomisp/pci/atomisp_ioctl.c | 127 ++++++++++------
 .../staging/media/atomisp/pci/ia_css_types.h  |   6 +-
 .../staging/media/atomisp/pci/sh_css_params.c |  16 +-
 5 files changed, 170 insertions(+), 140 deletions(-)

-- 
2.43.0