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 A65B41922CC; Thu, 5 Sep 2024 09:50:14 +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=1725529814; cv=none; b=K0biTVihHEArup+xrnqvZKL9xDfdHu8NJMVXH0mFGrUI/+fdUb1WjfiEFHqEn9W9CbCPgQ2/+pFGycVVgggF1oSkjCnllfDDWylyDmLxxx9BPDmjGbnIqmXMx62QFhJOBlUaW6pJfpMUslvoCNP/vQ4s3PMr3t+B8FneLA1t21g= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1725529814; c=relaxed/simple; bh=FICoyUyyH4x5npgZ4BF4bcc7FBsQoIzWobl10jb12Bs=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=U/B7H1SSv9wLaEHup1qM73dxAaxWZntJJxP7sD1rtjtiwuRwhhTjz96SUswbWmzVqSqatGZXPf/F27HI/w8FxxxsoZCCRTWmIUpFfwZFmoRKmqEFIVByVcDYVBw/MkNT+m2AGuU3CMdyj10+2U0qD11WLwx8RZW+aLMaUI3+5Qs= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=VdGsHdNX; 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="VdGsHdNX" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 14652C4CEC4; Thu, 5 Sep 2024 09:50:13 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1725529814; bh=FICoyUyyH4x5npgZ4BF4bcc7FBsQoIzWobl10jb12Bs=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=VdGsHdNXUKxLrihMKg/+X72bz12TML0cZcRd/BfnHLr5QnCsv/ygXjBW01WQYHcb0 AOllSv+TijD/TSoW+uqybXH3ZTOQksZnwOFMhILlQnjgSXUIZBZKr+SigNlmg02lpB Q6WMtcXCGdVZbfo48o6S3Sbn0mjgFwFXxMMhj/RU= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Marek Vasut , Robert Foss , Sasha Levin Subject: [PATCH 6.10 150/184] drm/bridge: tc358767: Check if fully initialized before signalling HPD event via IRQ Date: Thu, 5 Sep 2024 11:41:03 +0200 Message-ID: <20240905093738.194702269@linuxfoundation.org> X-Mailer: git-send-email 2.46.0 In-Reply-To: <20240905093732.239411633@linuxfoundation.org> References: <20240905093732.239411633@linuxfoundation.org> User-Agent: quilt/0.67 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: stable@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 6.10-stable review patch. If anyone has any objections, please let me know. ------------------ From: Marek Vasut [ Upstream commit 162e48cb1d84c2c966b649b8ac5c9d4f75f6d44f ] Make sure the connector is fully initialized before signalling any HPD events via drm_kms_helper_hotplug_event(), otherwise this may lead to NULL pointer dereference. Signed-off-by: Marek Vasut Reviewed-by: Robert Foss Signed-off-by: Robert Foss Link: https://patchwork.freedesktop.org/patch/msgid/20240531203333.277476-1-marex@denx.de Signed-off-by: Sasha Levin --- drivers/gpu/drm/bridge/tc358767.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/gpu/drm/bridge/tc358767.c b/drivers/gpu/drm/bridge/tc358767.c index 166f9a3e9622..332f0aa50fee 100644 --- a/drivers/gpu/drm/bridge/tc358767.c +++ b/drivers/gpu/drm/bridge/tc358767.c @@ -2135,7 +2135,7 @@ static irqreturn_t tc_irq_handler(int irq, void *arg) dev_err(tc->dev, "syserr %x\n", stat); } - if (tc->hpd_pin >= 0 && tc->bridge.dev) { + if (tc->hpd_pin >= 0 && tc->bridge.dev && tc->aux.drm_dev) { /* * H is triggered when the GPIO goes high. * -- 2.43.0