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habanalabs: check the return value of hl_cs_poll_fences()

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As part of handling of the multi-CS wait ioctl, hl_cs_poll_fences() is
called in a "while (true)" loop. This function can fail, but the
checking of its return value was missed.
Add this check and exit the loop in case of a failure.

Signed-off-by: Tomer Tayar <ttayar@habana.ai>
Reviewed-by: Oded Gabbay <ogabbay@kernel.org>
Signed-off-by: Oded Gabbay <ogabbay@kernel.org>
This commit is contained in:
Tomer Tayar 2021-12-28 13:47:18 +02:00 committed by Oded Gabbay
parent 085686fb84
commit aff5d9d378
1 changed files with 1 additions and 1 deletions
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2
drivers/misc/habanalabs/common/command_submission.c
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@ -2739,7 +2739,7 @@ static int hl_multi_cs_wait_ioctl(struct hl_fpriv *hpriv, void *data)
mcs_data.update_ts = false;
rc = hl_cs_poll_fences(&mcs_data, mcs_compl);
if (mcs_data.completion_bitmap)
if (rc || mcs_data.completion_bitmap)
break;
/*