linux-kernel - [PATCH v3 0/2] media: uvcvideo: Code cleanup for dev->status

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Date:   Thu, 15 Dec 2022 11:57:17 +0100
From:   Ricardo Ribalda <ribalda@...omium.org>
To:     Max Staudt <mstaudt@...omium.org>,
        Jonathan Cameron <Jonathan.Cameron@...wei.com>,
        Sergey Senozhatsky <senozhatsky@...omium.org>,
        Ming Lei <tom.leiming@...il.com>,
        Mauro Carvalho Chehab <mchehab@...nel.org>,
        Laurent Pinchart <laurent.pinchart@...asonboard.com>,
        Yunke Cao <yunkec@...omium.org>
Cc:     Ricardo Ribalda <ribalda@...omium.org>,
        Christoph Hellwig <hch@....de>, linux-usb@...r.kernel.org,
        Alan Stern <stern@...land.harvard.edu>,
        linux-kernel@...r.kernel.org, linux-media@...r.kernel.org
Subject: [PATCH v3 0/2] media: uvcvideo: Code cleanup for dev->status

There is no need to make a kzalloc just for 16 bytes. Let's embed the data
into the main data structure.

Now that we are at it, lets remove all the castings and open coding of
offsets for it.

[Christoph, do you think dma wise we are violating any non written rules? :) thanks]

Cc: Christoph Hellwig <hch@....de>
Cc: Alan Stern <stern@...land.harvard.edu>
Cc: linux-usb@...r.kernel.org
To: Ming Lei <tom.leiming@...il.com>
To: Jonathan Cameron <Jonathan.Cameron@...wei.com>
To: Yunke Cao <yunkec@...omium.org>
To: Sergey Senozhatsky <senozhatsky@...omium.org>
To: Max Staudt <mstaudt@...omium.org>
To: Laurent Pinchart <laurent.pinchart@...asonboard.com>
To: Mauro Carvalho Chehab <mchehab@...nel.org>
Cc: linux-media@...r.kernel.org
Cc: linux-kernel@...r.kernel.org
Signed-off-by: Ricardo Ribalda <ribalda@...omium.org>

---
Changes in v3:
- Split the patch in two
- Add linux-usb, Alan and Christoph for the allocation change.
- Link to v2: https://lore.kernel.org/r/20221214-uvc-status-alloc-v2-0-3f1cba6fc734@chromium.org

Changes in v2:
- using __aligned(), to keep the old alignment
- Adding Johnathan Cameron to:, as he has some similar experience with iio
- Adding Ming Lei, as this patch kind of revert his patch
- Link to v1: https://lore.kernel.org/r/20221214-uvc-status-alloc-v1-0-a0098ddc7c93@chromium.org

---
Ricardo Ribalda (2):
      media: uvcvideo: Remove void casting for the status endpoint
      media: uvcvideo: Do not alloc dev->status

 drivers/media/usb/uvc/uvc_status.c | 69 ++++++++++++--------------------------
 drivers/media/usb/uvc/uvcvideo.h   | 29 ++++++++++++++--
 2 files changed, 47 insertions(+), 51 deletions(-)
---
base-commit: 0ec5a38bf8499f403f81cb81a0e3a60887d1993c
change-id: 20221214-uvc-status-alloc-93becb783898

Best regards,
-- 
Ricardo Ribalda <ribalda@...omium.org>