drm/radeon: Fix VRAM size calculation for VRAM >= 4GB

commit fc986034540102cd090237bf3f70262e1ae80d9c upstream.

Add ULL prefix to avoid overflow.

Signed-off-by: Niels Ole Salscheider <niels_ole@salscheider-online.de>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/gpu/drm/radeon/evergreen.c b/drivers/gpu/drm/radeon/evergreen.c
index aeaa3862b831291ff2b1b83a277c21533b95f3f1..0ea6bdf5fd7c8d5ac77089d1704c13907d6b8bd3 100644 (file)
--- a/drivers/gpu/drm/radeon/evergreen.c
+++ b/drivers/gpu/drm/radeon/evergreen.c
@@ -2400,8 +2400,8 @@ int evergreen_mc_init(struct radeon_device *rdev)
                rdev->mc.real_vram_size = RREG32(CONFIG_MEMSIZE);
        } else {
                /* size in MB on evergreen/cayman/tn */
-               rdev->mc.mc_vram_size = RREG32(CONFIG_MEMSIZE) * 1024 * 1024;
-               rdev->mc.real_vram_size = RREG32(CONFIG_MEMSIZE) * 1024 * 1024;
+               rdev->mc.mc_vram_size = RREG32(CONFIG_MEMSIZE) * 1024ULL * 1024ULL;
+               rdev->mc.real_vram_size = RREG32(CONFIG_MEMSIZE) * 1024ULL * 1024ULL;
        }
        rdev->mc.visible_vram_size = rdev->mc.aper_size;
        r700_vram_gtt_location(rdev, &rdev->mc);

diff --git a/drivers/gpu/drm/radeon/radeon_ttm.c b/drivers/gpu/drm/radeon/radeon_ttm.c
index 93f760e27a9200a81b94dfee8ce6d14ac935b49a..6c0ce8915fac9efc399654a8b25e4bd180285d0a 100644 (file)
--- a/drivers/gpu/drm/radeon/radeon_ttm.c
+++ b/drivers/gpu/drm/radeon/radeon_ttm.c
@@ -726,7 +726,7 @@ int radeon_ttm_init(struct radeon_device *rdev)
                return r;
        }
        DRM_INFO("radeon: %uM of VRAM memory ready\n",
-                (unsigned)rdev->mc.real_vram_size / (1024 * 1024));
+                (unsigned) (rdev->mc.real_vram_size / (1024 * 1024)));
        r = ttm_bo_init_mm(&rdev->mman.bdev, TTM_PL_TT,
                                rdev->mc.gtt_size >> PAGE_SHIFT);
        if (r) {

diff --git a/drivers/gpu/drm/radeon/si.c b/drivers/gpu/drm/radeon/si.c
index 3dd7ecc072d1fc2c31c824507e46a0de1e2b111d..287248cc05f98dd4a8a39c8488b74abf1c37b0b0 100644 (file)
--- a/drivers/gpu/drm/radeon/si.c
+++ b/drivers/gpu/drm/radeon/si.c
@@ -2644,8 +2644,8 @@ static int si_mc_init(struct radeon_device *rdev)
        rdev->mc.aper_base = pci_resource_start(rdev->pdev, 0);
        rdev->mc.aper_size = pci_resource_len(rdev->pdev, 0);
        /* size in MB on si */
-       rdev->mc.mc_vram_size = RREG32(CONFIG_MEMSIZE) * 1024 * 1024;
-       rdev->mc.real_vram_size = RREG32(CONFIG_MEMSIZE) * 1024 * 1024;
+       rdev->mc.mc_vram_size = RREG32(CONFIG_MEMSIZE) * 1024ULL * 1024ULL;
+       rdev->mc.real_vram_size = RREG32(CONFIG_MEMSIZE) * 1024ULL * 1024ULL;
        rdev->mc.visible_vram_size = rdev->mc.aper_size;
        si_vram_gtt_location(rdev, &rdev->mc);
        radeon_update_bandwidth_info(rdev);