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Commit 909d9eb6 authored by Alex Deucher's avatar Alex Deucher
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drm/radeon/r6xx: fix DMA engine for ttm bo transfers 



count must be a multiple of 2. Fixes crashes on
R6xx chips reported by a number of people.

Cc: Borislav Petkov <bp@alien8.de>
Cc: Markus Trippelsdorf <markus@trippelsdorf.de>
Reviewed-by: default avatarJerome Glisse <jglisse@redhat.com>
Tested-by: default avatarJerome Glisse <jglisse@redhat.com>
Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
parent cafa59b9

drivers/gpu/drm/radeon/r600.c

+2 −2
Original line number Diff line number Diff line
@@ -2636,8 +2636,8 @@ int r600_copy_dma(struct radeon_device *rdev, 


	for (i = 0; i < num_loops; i++) {

		cur_size_in_dw = size_in_dw;

		if (cur_size_in_dw > 0xFFFF)

			cur_size_in_dw = 0xFFFF;

		if (cur_size_in_dw > 0xFFFE)

			cur_size_in_dw = 0xFFFE;

		size_in_dw -= cur_size_in_dw;

		radeon_ring_write(ring, DMA_PACKET(DMA_PACKET_COPY, 0, 0, cur_size_in_dw));

		radeon_ring_write(ring, dst_offset & 0xfffffffc);