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Commit 8625ff9c authored by Felix Kuehling's avatar Felix Kuehling Committed by Oded Gabbay
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drm/amdkfd: Allocate gtt_sa_bitmap in long units 



gtt_sa_bitmap is accessed by bitmap functions, which operate on longs.
Therefore the array should be allocated in long units. Also round up
in case the number of bits is not a multiple of BITS_PER_LONG.

Signed-off-by: default avatarFelix Kuehling <Felix.Kuehling@amd.com>
Reviewed-by: default avatarOded Gabbay <oded.gabbay@gmail.com>
Signed-off-by: default avatarOded Gabbay <oded.gabbay@gmail.com>
parent 735df2ba

drivers/gpu/drm/amd/amdkfd/kfd_device.c

+4 −4
Original line number Diff line number Diff line
@@ -395,7 +395,7 @@ void kgd2kfd_interrupt(struct kfd_dev *kfd, const void *ih_ring_entry) 
static int kfd_gtt_sa_init(struct kfd_dev *kfd, unsigned int buf_size,

				unsigned int chunk_size)

{

	unsigned int num_of_bits;

	unsigned int num_of_longs;



	BUG_ON(buf_size < chunk_size);

	BUG_ON(buf_size == 0);
@@ -404,10 +404,10 @@ static int kfd_gtt_sa_init(struct kfd_dev *kfd, unsigned int buf_size, 
	kfd->gtt_sa_chunk_size = chunk_size;

	kfd->gtt_sa_num_of_chunks = buf_size / chunk_size;



	num_of_bits = kfd->gtt_sa_num_of_chunks / BITS_PER_BYTE;

	BUG_ON(num_of_bits == 0);

	num_of_longs = (kfd->gtt_sa_num_of_chunks + BITS_PER_LONG - 1) /

		BITS_PER_LONG;



	kfd->gtt_sa_bitmap = kzalloc(num_of_bits, GFP_KERNEL);

	kfd->gtt_sa_bitmap = kcalloc(num_of_longs, sizeof(long), GFP_KERNEL);



	if (!kfd->gtt_sa_bitmap)

		return -ENOMEM;