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habanalabs: fix backward compatibility of idle check

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[ Upstream commit f8abaf379bfe19600f96ae79a6759eb37039ae05 ]

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: Oded Gabbay <ogabbay@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Oded Gabbay 2021-01-18 13:19:51 +02:00 committed by Greg Kroah-Hartman
parent 4439d22c37
commit 90981a2171
1 changed files with 2 additions and 0 deletions
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2
drivers/misc/habanalabs/common/habanalabs_ioctl.c
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@ -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;