diff options
| author | Omer Shpigelman <oshpigelman@habana.ai> | 2019-11-14 18:23:56 +0000 |
|---|---|---|
| committer | Oded Gabbay <oded.gabbay@gmail.com> | 2019-11-21 11:35:46 +0200 |
| commit | bc75d799f9531fe112f7d78a5547ad549293fb7e (patch) | |
| tree | c9922857a9ab8cb3b5e9ac4c37916019b172c488 /drivers/misc | |
| parent | 54bb67444ea3f388756c5955db52ef62eb4ba3b9 (diff) | |
| download | linux-bc75d799f9531fe112f7d78a5547ad549293fb7e.tar.gz linux-bc75d799f9531fe112f7d78a5547ad549293fb7e.tar.bz2 linux-bc75d799f9531fe112f7d78a5547ad549293fb7e.zip | |
habanalabs: prevent read/write from/to the device during hard reset
During hard reset we should not access the device except of necessary
reset operations because the device might be stuck or unresponsive.
Signed-off-by: Omer Shpigelman <oshpigelman@habana.ai>
Reviewed-by: Oded Gabbay <oded.gabbay@gmail.com>
Signed-off-by: Oded Gabbay <oded.gabbay@gmail.com>
Diffstat (limited to 'drivers/misc')
| -rw-r--r-- | drivers/misc/habanalabs/goya/goya.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/drivers/misc/habanalabs/goya/goya.c b/drivers/misc/habanalabs/goya/goya.c index 3294a6a92f75..2935e84fe7d8 100644 --- a/drivers/misc/habanalabs/goya/goya.c +++ b/drivers/misc/habanalabs/goya/goya.c @@ -4870,7 +4870,8 @@ static void goya_mmu_invalidate_cache(struct hl_device *hdev, bool is_hard, u32 status, timeout_usec; int rc; - if (!(goya->hw_cap_initialized & HW_CAP_MMU)) + if (!(goya->hw_cap_initialized & HW_CAP_MMU) || + hdev->hard_reset_pending) return; /* no need in L1 only invalidation in Goya */ @@ -4909,7 +4910,8 @@ static void goya_mmu_invalidate_cache_range(struct hl_device *hdev, u32 status, timeout_usec, inv_data, pi; int rc; - if (!(goya->hw_cap_initialized & HW_CAP_MMU)) + if (!(goya->hw_cap_initialized & HW_CAP_MMU) || + hdev->hard_reset_pending) return; /* no need in L1 only invalidation in Goya */ |