RE: [PATCH] hyperv: remove meaningless pr_err() in vmbus_recvpacket_raw()
From: KY Srinivasan
Date: Mon Jun 30 2014 - 10:51:42 EST
> -----Original Message-----
> From: Jason Wang [mailto:jasowang@xxxxxxxxxx]
> Sent: Sunday, June 29, 2014 11:15 PM
> To: KY Srinivasan; Haiyang Zhang; devel@xxxxxxxxxxxxxxxxxxxxxx; linux-
> kernel@xxxxxxxxxxxxxxx
> Cc: Jason Wang
> Subject: [PATCH] hyperv: remove meaningless pr_err() in
> vmbus_recvpacket_raw()
>
> All its callers depends on the return value of -ENOBUFS to reallocate a bigger
> buffer and retry the receiving. So there's no need to call
> pr_err() here since it was not a real issue, otherwise syslog will be flooded by
> this false warning.
>
> Cc: K. Y. Srinivasan <kys@xxxxxxxxxxxxx>
> Cc: Haiyang Zhang <haiyangz@xxxxxxxxxxxxx>
> Signed-off-by: Jason Wang <jasowang@xxxxxxxxxx>
Thanks Jason.
Signed-off-by: K. Y. Srinivasan <kys@xxxxxxxxxxxxx>
> ---
> drivers/hv/channel.c | 6 +-----
> 1 files changed, 1 insertions(+), 5 deletions(-)
>
> diff --git a/drivers/hv/channel.c b/drivers/hv/channel.c index
> 284cf66..531a593 100644
> --- a/drivers/hv/channel.c
> +++ b/drivers/hv/channel.c
> @@ -808,12 +808,8 @@ int vmbus_recvpacket_raw(struct vmbus_channel
> *channel, void *buffer,
>
> *buffer_actual_len = packetlen;
>
> - if (packetlen > bufferlen) {
> - pr_err("Buffer too small - needed %d bytes but "
> - "got space for only %d bytes\n",
> - packetlen, bufferlen);
> + if (packetlen > bufferlen)
> return -ENOBUFS;
> - }
>
> *requestid = desc.trans_id;
>
> --
> 1.7.1
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