Commit 2ca05cc7 authored by Oded Gabbay's avatar Oded Gabbay Committed by Zheng Zengkai
Browse files

habanalabs: fix backward compatibility of idle check 



stable inclusion
from stable-5.10.14
commit 90981a2171b9fdb6d20046f7ce3d70f8c460e53e
bugzilla: 48051

--------------------------------

[ Upstream commit f8abaf37 ]

Need to take the lower 32 bits of the driver's 64-bit idle mask and put
it in the legacy 32-bit variable that the userspace reads to know the
idle mask.

Signed-off-by: default avatarOded Gabbay <ogabbay@kernel.org>
Signed-off-by: default avatarSasha Levin <sashal@kernel.org>
Signed-off-by: default avatarZheng Zengkai <zhengzengkai@huawei.com>
Acked-by: default avatarXie XiuQi <xiexiuqi@huawei.com>
parent d92aabe2

drivers/misc/habanalabs/common/habanalabs_ioctl.c

+2 −0
Original line number Diff line number Diff line
@@ -133,6 +133,8 @@ static int hw_idle(struct hl_device *hdev, struct hl_info_args *args) 


	hw_idle.is_idle = hdev->asic_funcs->is_device_idle(hdev,

					&hw_idle.busy_engines_mask_ext, NULL);

	hw_idle.busy_engines_mask =

			lower_32_bits(hw_idle.busy_engines_mask_ext);



	return copy_to_user(out, &hw_idle,

		min((size_t) max_size, sizeof(hw_idle))) ? -EFAULT : 0;