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 8B5802E54DD; Tue, 15 Jul 2025 13:44:44 +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=1752587084; cv=none; b=lfLUjgLMrvOeDzJsxFyfoOj1MMO7R4cA+xZUoE/YcH5/YCQolXNJ6lgQgKMR/urdW1cf/c0tAu1UblEW0l1x5wyIlqOFSpZnP1mTbFy6+yihfxGpAPRTdnmGaEreUNyVY13QVQg9vHQNfj2DTi+dG7AcU5wk2MtbVwWc7wuZLlo= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1752587084; c=relaxed/simple; bh=RfRxnmSivj+F5EHhsHN6qZxaTU12chpz66UARERb1Pk=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=U9zYNKLcnfiyAsMMpcduv2rsT5Zz24PZNJ8yyr5ZQOc2jVeAOcIMgeJYVuL6w9dEQZ2Io+iiyz6jV3pNMhQhmYGeRx5qBR5lmTQc1WVY7An7XLq1Wc/p4aGzmG5SzkD5Kj+CFFRpqR+sQfZuAUvTCD5k5NbE6BttBGP/OswSzJE= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=wuMBlaii; 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="wuMBlaii" Received: by smtp.kernel.org (Postfix) with ESMTPSA id B8F0AC4CEE3; Tue, 15 Jul 2025 13:44:43 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1752587084; bh=RfRxnmSivj+F5EHhsHN6qZxaTU12chpz66UARERb1Pk=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=wuMBlaiiYzok1I/TuRTS4xHbvVfeeb349x/Ws4rxJA7hOYKopqwkcHacQIFfktQsN nenBWhQ5fL0FbhydYHWKjFdGx6fOlgC9RmCw414yp2qklnRdALqtbAeGkcGn48GJbw OxFSOd9KZlgUAU5jYgtT6S2Ne38/s6roGkGxOfTw= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Mikko Perttunen , Thierry Reding , Sasha Levin Subject: [PATCH 6.15 129/192] drm/tegra: nvdec: Fix dma_alloc_coherent error check Date: Tue, 15 Jul 2025 15:13:44 +0200 Message-ID: <20250715130820.076430250@linuxfoundation.org> X-Mailer: git-send-email 2.50.1 In-Reply-To: <20250715130814.854109770@linuxfoundation.org> References: <20250715130814.854109770@linuxfoundation.org> User-Agent: quilt/0.68 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 6.15-stable review patch. If anyone has any objections, please let me know. ------------------ From: Mikko Perttunen [ Upstream commit 44306a684cd1699b8562a54945ddc43e2abc9eab ] Check for NULL return value with dma_alloc_coherent, in line with Robin's fix for vic.c in 'drm/tegra: vic: Fix DMA API misuse'. Fixes: 46f226c93d35 ("drm/tegra: Add NVDEC driver") Signed-off-by: Mikko Perttunen Signed-off-by: Thierry Reding Link: https://lore.kernel.org/r/20250702-nvdec-dma-error-check-v1-1-c388b402c53a@nvidia.com Signed-off-by: Sasha Levin --- drivers/gpu/drm/tegra/nvdec.c | 6 ++---- 1 file changed, 2 insertions(+), 4 deletions(-) diff --git a/drivers/gpu/drm/tegra/nvdec.c b/drivers/gpu/drm/tegra/nvdec.c index 2d9a0a3f6c381..7a38664e890e3 100644 --- a/drivers/gpu/drm/tegra/nvdec.c +++ b/drivers/gpu/drm/tegra/nvdec.c @@ -261,10 +261,8 @@ static int nvdec_load_falcon_firmware(struct nvdec *nvdec) if (!client->group) { virt = dma_alloc_coherent(nvdec->dev, size, &iova, GFP_KERNEL); - - err = dma_mapping_error(nvdec->dev, iova); - if (err < 0) - return err; + if (!virt) + return -ENOMEM; } else { virt = tegra_drm_alloc(tegra, size, &iova); if (IS_ERR(virt)) -- 2.39.5