diff options
| author | Michael Kelley <mikelley@microsoft.com> | 2021-04-20 08:44:19 -0700 |
|---|---|---|
| committer | Wei Liu <wei.liu@kernel.org> | 2021-04-20 19:48:15 +0000 |
| commit | aa5b7d11c7cb87c266d705b237368985e7171958 (patch) | |
| tree | a3bce8cb021075c157a6b0909f43a92233440312 /drivers/video | |
| parent | 77db0ec8b7764cb9b09b78066ebfd47b2c0c1909 (diff) | |
video: hyperv_fb: Add ratelimit on error message
Due to a full ring buffer, the driver may be unable to send updates to
the Hyper-V host. But outputing the error message can make the problem
worse because console output is also typically written to the frame
buffer. As a result, in some circumstances the error message is output
continuously.
Break the cycle by rate limiting the error message. Also output
the error code for additional diagnosability.
Signed-off-by: Michael Kelley <mikelley@microsoft.com>
Link: https://lore.kernel.org/r/1618933459-10585-1-git-send-email-mikelley@microsoft.com
Signed-off-by: Wei Liu <wei.liu@kernel.org>
Diffstat (limited to 'drivers/video')
| -rw-r--r-- | drivers/video/fbdev/hyperv_fb.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/video/fbdev/hyperv_fb.c b/drivers/video/fbdev/hyperv_fb.c index c8b0ae676809..68adbf8d517a 100644 --- a/drivers/video/fbdev/hyperv_fb.c +++ b/drivers/video/fbdev/hyperv_fb.c @@ -308,7 +308,7 @@ static inline int synthvid_send(struct hv_device *hdev, VM_PKT_DATA_INBAND, 0); if (ret) - pr_err("Unable to send packet via vmbus\n"); + pr_err_ratelimited("Unable to send packet via vmbus; error %d\n", ret); return ret; } |