From: Michel Dänzer <michel.daenzer@amd.com>
Date: Mon, 18 Nov 2013 09:25:59 +0000 (+0900)
Subject: drm/radeon/cik: Return backend map information to userspace
X-Git-Tag: firefly_0821_release~176^2~4890^2~5^2~2
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=1ddce27d8f0ae3f911850e06a4937de89645dfa7;p=firefly-linux-kernel-4.4.55.git

drm/radeon/cik: Return backend map information to userspace

This is required to properly calculate the tiling parameters
in userspace.

Signed-off-by: Michel Dänzer <michel.daenzer@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
---

diff --git a/drivers/gpu/drm/radeon/radeon_kms.c b/drivers/gpu/drm/radeon/radeon_kms.c
index bb8710531a1b..fa42c81da500 100644
--- a/drivers/gpu/drm/radeon/radeon_kms.c
+++ b/drivers/gpu/drm/radeon/radeon_kms.c
@@ -340,7 +340,7 @@ int radeon_info_ioctl(struct drm_device *dev, void *data, struct drm_file *filp)
 		break;
 	case RADEON_INFO_BACKEND_MAP:
 		if (rdev->family >= CHIP_BONAIRE)
-			return -EINVAL;
+			*value = rdev->config.cik.backend_map;
 		else if (rdev->family >= CHIP_TAHITI)
 			*value = rdev->config.si.backend_map;
 		else if (rdev->family >= CHIP_CAYMAN)