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 AC53018E04F; Mon, 28 Oct 2024 06:39:08 +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=1730097548; cv=none; b=AkVQODoFLCwcs+K2n0LsnEUpTBPNslYpS8yv0EMFyG3quEY1CZ4bx4kBLxKibM6oOM9z1hZS0GdvFhKH/zBjYw7tXt4VWBopQhD0pJgJ7Fv/762JMU7OiQoq529HJZgRbSS7W+2FQwrxmTXdwtc1gSXd2BwVDzR9XUxHIPyW1Ik= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1730097548; c=relaxed/simple; bh=6e3IBE7cGQ8wQYgJBFcsNJauE8sGSwFvSg4rsmzuvgI=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=XFlWg8Uk5DThnf/NjBOYbaB6Mc14YXdyNJuUdbwLqO5pLK//yzLeV84DjaG5aRTV3fc0gH/NNxhRBuzrC51Yp4B4cYWp+EkEGusM/vEYSQBtMyr8gTFE2gj7FLPUyNtBL/+0OJJ4dfS5V1S+6BkVkdEieUETnG3dDK6fInTZifI= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=p7E9j8WB; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="p7E9j8WB" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 435C7C4CEC3; Mon, 28 Oct 2024 06:39:08 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1730097548; bh=6e3IBE7cGQ8wQYgJBFcsNJauE8sGSwFvSg4rsmzuvgI=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=p7E9j8WBvUUnEww2oMk7j5cbOunWzh8LHdxKTWrY/IJtkwd10N3I76DUb1/XONPm8 0342BLukXbqOb9IJ1wDs6ETCyNrZ5AOxhDwFnZz5v0wMyCB3k//963n3enPbZegZxE kRs0qUhmd3Io+qP9hfC+sG0UoB8RCIOmhgEJ6tF4= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Abhinav Kumar , Dmitry Baryshkov , Sasha Levin Subject: [PATCH 6.6 041/208] drm/msm/dpu: make sure phys resources are properly initialized Date: Mon, 28 Oct 2024 07:23:41 +0100 Message-ID: <20241028062307.667352166@linuxfoundation.org> X-Mailer: git-send-email 2.47.0 In-Reply-To: <20241028062306.649733554@linuxfoundation.org> References: <20241028062306.649733554@linuxfoundation.org> User-Agent: quilt/0.67 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: patches@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 6.6-stable review patch. If anyone has any objections, please let me know. ------------------ From: Dmitry Baryshkov [ Upstream commit bfecbc2cfba9b06d67d9d249c33d92e570e2fa70 ] The commit b954fa6baaca ("drm/msm/dpu: Refactor rm iterator") removed zero-init of the hw_ctl array, but didn't change the error condition, that checked for hw_ctl[i] being NULL. At the same time because of the early returns in case of an error dpu_encoder_phys might be left with the resources assigned in the previous state. Rework assigning of hw_pp / hw_ctl to the dpu_encoder_phys in order to make sure they are always set correctly. Fixes: b954fa6baaca ("drm/msm/dpu: Refactor rm iterator") Suggested-by: Abhinav Kumar Signed-off-by: Dmitry Baryshkov Reviewed-by: Abhinav Kumar Patchwork: https://patchwork.freedesktop.org/patch/612233/ Link: https://lore.kernel.org/r/20240903-dpu-mode-config-width-v6-1-617e1ecc4b7a@linaro.org Signed-off-by: Abhinav Kumar Signed-off-by: Sasha Levin --- drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c | 9 ++++----- 1 file changed, 4 insertions(+), 5 deletions(-) diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c index 6262ec5e40204..10c68de1bf22c 100644 --- a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c @@ -1122,21 +1122,20 @@ static void dpu_encoder_virt_atomic_mode_set(struct drm_encoder *drm_enc, for (i = 0; i < dpu_enc->num_phys_encs; i++) { struct dpu_encoder_phys *phys = dpu_enc->phys_encs[i]; - if (!dpu_enc->hw_pp[i]) { + phys->hw_pp = dpu_enc->hw_pp[i]; + if (!phys->hw_pp) { DPU_ERROR_ENC(dpu_enc, "no pp block assigned at idx: %d\n", i); return; } - if (!hw_ctl[i]) { + phys->hw_ctl = i < num_ctl ? to_dpu_hw_ctl(hw_ctl[i]) : NULL; + if (!phys->hw_ctl) { DPU_ERROR_ENC(dpu_enc, "no ctl block assigned at idx: %d\n", i); return; } - phys->hw_pp = dpu_enc->hw_pp[i]; - phys->hw_ctl = to_dpu_hw_ctl(hw_ctl[i]); - phys->cached_mode = crtc_state->adjusted_mode; if (phys->ops.atomic_mode_set) phys->ops.atomic_mode_set(phys, crtc_state, conn_state); -- 2.43.0