From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 7486C3E6DC1; Tue, 14 Apr 2026 13:45:41 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1776174341; cv=none; b=ewwtjbbjID1NBRlKXVZAj2Q0nX8YptioT9mAFtJLKl3qk+6F62wI48fjUlWg+bbz3PcbXEUPbgRm2gZN1SHmwpTXqNqsR+oy/RKCBHGIm8FCkzsXyiG1nyXHaFo+4kpgIvYnsJnzzVYn3VRqMGF7nS9lEwZ85DxLE8xuslSj2aA= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1776174341; c=relaxed/simple; bh=nVVHoxUeXvRzhoTJlBKK/t9o4nFBK0alKrR7IwK40lI=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version; b=ZMLD2h2sSUBgE+8nTfI61r6u50Kfz16G7zZaH0yfcoARgETGE7n8J5sX+ScEav/AVr5bxlQh7BAR6tntra0YS/KSnJz2a5hkK6o+zPz4cb9zMgz154lmXQr/OQ4b7WuAmpDUgAWf23R+j/VT1ZlnlHUa7Aeut3V7LG4pORVqM88= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=nRPRVPH9; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="nRPRVPH9" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 0993BC2BCB9; Tue, 14 Apr 2026 13:45:40 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1776174341; bh=nVVHoxUeXvRzhoTJlBKK/t9o4nFBK0alKrR7IwK40lI=; h=From:To:Cc:Subject:Date:From; b=nRPRVPH91exm+L5PHGO2CYd5v0Z2q7SmZ68eRM1qKV1RAUZCw07TD1E6hfsQoA0Pm 9FsGjtvs0OWoDp/jIDqpaWcFVOivucgxpL/tFxM6h7WVFcASV8nJAgw8Cf1JKu6UVa W8LX0Oz6WxoyHDoqDZGryCOaHPONW/uem7+7O27ZBzKfJud/PVtZl7/ycwlfOgTfPX 59TDhQhIm7IgOYWP3favb73e91eHV7/Q4MFgCHL1jtlAlrZScbUrVyJNDQmP2hhEXD 0Eu45Ii3+32dlhxKvImBOFgunsydSlHeYL5g0e+9VML7Orbdr7AOrcmRdTYsmHqUsx IcwgsCtSSRCUA== Received: from johan by xi.lan with local (Exim 4.98.2) (envelope-from ) id 1wCe5C-000000046Vq-2oW7; Tue, 14 Apr 2026 15:45:38 +0200 From: Johan Hovold To: Mark Brown Cc: linux-spi@vger.kernel.org, linux-kernel@vger.kernel.org, Johan Hovold Subject: [PATCH 0/8] spi: fix explicit controller deregistration Date: Tue, 14 Apr 2026 15:43:11 +0200 Message-ID: <20260414134319.978196-1-johan@kernel.org> X-Mailer: git-send-email 2.52.0 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Turns out we have a few drivers that get the tear down ordering wrong also when not using device managed registration (cf. [1] and [2]). Fix this to avoid issues like system errors due to unclocked accesses, NULL-pointer dereferences, hangs or failed I/O during during deregistration (e.g. when powering down devices). Johan [1] https://lore.kernel.org/lkml/20260409120419.388546-2-johan@kernel.org/ [2] https://lore.kernel.org/lkml/20260410081757.503099-1-johan@kernel.org/ Johan Hovold (8): spi: cadence: fix controller deregistration spi: cadence-quadspi: fix controller deregistration spi: mpc52xx: fix controller deregistration spi: mpc52xx: fix use-after-free on unbind spi: mxic: fix controller deregistration spi: orion: fix controller deregistration spi: topcliff-pch: fix controller deregistration spi: topcliff-pch: fix use-after-free on unbind drivers/spi/spi-cadence-quadspi.c | 4 ++-- drivers/spi/spi-cadence.c | 6 +++++- drivers/spi/spi-mpc52xx.c | 6 ++++-- drivers/spi/spi-mxic.c | 3 ++- drivers/spi/spi-orion.c | 7 ++++++- drivers/spi/spi-topcliff-pch.c | 11 ++++++++--- 6 files changed, 27 insertions(+), 10 deletions(-) -- 2.52.0