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 6BAD24431 for ; Wed, 15 Mar 2023 12:37:35 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id C0147C4339B; Wed, 15 Mar 2023 12:37:34 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1678883855; bh=vsP5zue/IExoFhZ69eEvRir84B0LNiO1AYO1Gr4lC48=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=Euj7SdT9QAB46kxkv5AssFmqN6OOwSgYfIgaGqzXepfmPGmb9+RONavuK/WQe7PRx spLJZBfh2oYEl75KJaTYIp7ymLYIfsh21zcAID+hD/xL8kzMVyUpd2LK+Ldc4yexuO 2XX0G2ATjL6g5toBwzboWzSjKNJrY5kfHHNVTd5c= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Hawking Zhang , Alex Deucher Subject: [PATCH 6.2 014/141] drm/amdgpu: fix error checking in amdgpu_read_mm_registers for nv Date: Wed, 15 Mar 2023 13:11:57 +0100 Message-Id: <20230315115740.414139698@linuxfoundation.org> X-Mailer: git-send-email 2.40.0 In-Reply-To: <20230315115739.932786806@linuxfoundation.org> References: <20230315115739.932786806@linuxfoundation.org> User-Agent: quilt/0.67 Precedence: bulk X-Mailing-List: patches@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit From: Alex Deucher commit b42fee5e0b44344cfe4c38e61341ee250362c83f upstream. Properly skip non-existent registers as well. Bug: https://gitlab.freedesktop.org/drm/amd/-/issues/2442 Reviewed-by: Hawking Zhang Signed-off-by: Alex Deucher Cc: stable@vger.kernel.org Signed-off-by: Greg Kroah-Hartman --- drivers/gpu/drm/amd/amdgpu/nv.c | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-) --- a/drivers/gpu/drm/amd/amdgpu/nv.c +++ b/drivers/gpu/drm/amd/amdgpu/nv.c @@ -393,9 +393,10 @@ static int nv_read_register(struct amdgp *value = 0; for (i = 0; i < ARRAY_SIZE(nv_allowed_read_registers); i++) { en = &nv_allowed_read_registers[i]; - if (adev->reg_offset[en->hwip][en->inst] && - reg_offset != (adev->reg_offset[en->hwip][en->inst][en->seg] - + en->reg_offset)) + if (!adev->reg_offset[en->hwip][en->inst]) + continue; + else if (reg_offset != (adev->reg_offset[en->hwip][en->inst][en->seg] + + en->reg_offset)) continue; *value = nv_get_register_value(adev,