linux-kernel - Fixing IPU3 IMGU warnings due to extraneous calls to s

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Message-ID: <20240620145820.3910239-1-mstaudt@chromium.org>
Date: Thu, 20 Jun 2024 23:45:40 +0900
From: Max Staudt <mstaudt@...omium.org>
To: Sakari Ailus <sakari.ailus@...ux.intel.com>,
	Bingbu Cao <bingbu.cao@...el.com>,
	Tianshu Qiu <tian.shu.qiu@...el.com>,
	Mauro Carvalho Chehab <mchehab@...nel.org>
Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	linux-media@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	Ricardo Ribalda <ribalda@...omium.org>,
	Max Staudt <mstaudt@...omium.org>
Subject: Fixing IPU3 IMGU warnings due to extraneous calls to s_stream()

Dear IPU3 driver maintainers,

The Intel IPU3 IMGU driver no longer shuts down cleanly since v6.7,
because vb2 now complains if s_stream() is called multiple times on
the same object:

  https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=009905ec50433259c05f474251000b040098564e

This series attempts to fix this, but needs a review from someone more
intimate with IPU3 and its driver. Could you please have a look at this?


Thanks for your feedback,

Max


 [PATCH v1 1/3] staging: media: ipu3: Drop superfluous check in
 [PATCH v1 2/3] staging: media: ipu3: Return buffers outside of
 [PATCH v1 3/3] staging: media: ipu3: Stop streaming in inverse order