netdev.vger.kernel.org archive mirror
 help / color / mirror / Atom feed
From: Dan Carpenter <dan.carpenter@oracle.com>
To: Derek Chickles <derek.chickles@caviumnetworks.com>,
	Raghu Vatsavayi <raghu.vatsavayi@caviumnetworks.com>
Cc: Satanand Burla <satananda.burla@caviumnetworks.com>,
	Felix Manlunas <felix.manlunas@caviumnetworks.com>,
	netdev@vger.kernel.org, kernel-janitors@vger.kernel.org
Subject: [patch] liquidio: CN23XX: fix a loop timeout
Date: Thu, 13 Oct 2016 11:56:57 +0300	[thread overview]
Message-ID: <20161013085657.GL16198@mwanda> (raw)

This is supposed to loop 1000 times and then give up.  The problem is
it's a post-op and after the loop we test if "loop" is zero when really
it would be -1.  Fix this by making it a pre-op.

Fixes: 1b7c55c4538b ("liquidio: CN23XX queue manipulation")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>

diff --git a/drivers/net/ethernet/cavium/liquidio/cn23xx_pf_device.c b/drivers/net/ethernet/cavium/liquidio/cn23xx_pf_device.c
index bddb198..380a641 100644
--- a/drivers/net/ethernet/cavium/liquidio/cn23xx_pf_device.c
+++ b/drivers/net/ethernet/cavium/liquidio/cn23xx_pf_device.c
@@ -693,7 +693,7 @@ static int cn23xx_enable_io_queues(struct octeon_device *oct)
 				while ((reg_val & CN23XX_PKT_INPUT_CTL_RST) &&
 				       !(reg_val &
 					 CN23XX_PKT_INPUT_CTL_QUIET) &&
-				       loop--) {
+				       --loop) {
 					reg_val = octeon_read_csr64(
 					    oct,
 					    CN23XX_SLI_IQ_PKT_CONTROL64(q_no));

             reply	other threads:[~2016-10-13  8:57 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-10-13  8:56 Dan Carpenter [this message]
2016-10-13 16:13 ` [patch] liquidio: CN23XX: fix a loop timeout David Miller

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=20161013085657.GL16198@mwanda \
    --to=dan.carpenter@oracle.com \
    --cc=derek.chickles@caviumnetworks.com \
    --cc=felix.manlunas@caviumnetworks.com \
    --cc=kernel-janitors@vger.kernel.org \
    --cc=netdev@vger.kernel.org \
    --cc=raghu.vatsavayi@caviumnetworks.com \
    --cc=satananda.burla@caviumnetworks.com \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body. 
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).