From: "Wu, Hao" <hao.wu@intel.com>
To: "Xu, Yilun" <yilun.xu@intel.com>,
"mdf@kernel.org" <mdf@kernel.org>,
"linux-fpga@vger.kernel.org" <linux-fpga@vger.kernel.org>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>
Cc: "trix@redhat.com" <trix@redhat.com>,
"bhu@redhat.com" <bhu@redhat.com>,
Matthew Gerlach <matthew.gerlach@linux.intel.com>,
"Xu, Yilun" <yilun.xu@intel.com>
Subject: RE: [PATCH 2/2] fpga: dfl: fix bug in port reset handshake
Date: Thu, 16 Apr 2020 08:06:17 +0000 [thread overview]
Message-ID: <DM6PR11MB381991FD47E055D344B77D2985D80@DM6PR11MB3819.namprd11.prod.outlook.com> (raw)
In-Reply-To: <1587006712-22696-3-git-send-email-yilun.xu@intel.com>
> -----Original Message-----
> From: linux-fpga-owner@vger.kernel.org <linux-fpga-owner@vger.kernel.org>
> On Behalf Of Xu Yilun
> Sent: Thursday, April 16, 2020 11:12 AM
> To: mdf@kernel.org; linux-fpga@vger.kernel.org; linux-
> kernel@vger.kernel.org
> Cc: trix@redhat.com; bhu@redhat.com; Matthew Gerlach
> <matthew.gerlach@linux.intel.com>; Xu, Yilun <yilun.xu@intel.com>
> Subject: [PATCH 2/2] fpga: dfl: fix bug in port reset handshake
>
> From: Matthew Gerlach <matthew.gerlach@linux.intel.com>
>
> When putting the port in reset, driver must wait for the soft reset
> acknowledgment bit instead of the soft reset bit.
>
> Fixes: 47c1b19c160f (fpga: dfl: afu: add port ops support)
> Signed-off-by: Matthew Gerlach <matthew.gerlach@linux.intel.com>
> Signed-off-by: Xu Yilun <yilun.xu@intel.com>
Thanks for catching this.
Acked-by: Wu Hao <hao.wu@intel.com>
> ---
> drivers/fpga/dfl-afu-main.c | 3 ++-
> 1 file changed, 2 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/fpga/dfl-afu-main.c b/drivers/fpga/dfl-afu-main.c
> index b0c3178..3fa2c59 100644
> --- a/drivers/fpga/dfl-afu-main.c
> +++ b/drivers/fpga/dfl-afu-main.c
> @@ -83,7 +83,8 @@ int __afu_port_disable(struct platform_device *pdev)
> * on this port and minimum soft reset pulse width has elapsed.
> * Driver polls port_soft_reset_ack to determine if reset done by HW.
> */
> - if (readq_poll_timeout(base + PORT_HDR_CTRL, v, v &
> PORT_CTRL_SFTRST,
> + if (readq_poll_timeout(base + PORT_HDR_CTRL, v,
> + v & PORT_CTRL_SFTRST_ACK,
> RST_POLL_INVL, RST_POLL_TIMEOUT)) {
> dev_err(&pdev->dev, "timeout, fail to reset device\n");
> return -ETIMEDOUT;
> --
> 2.7.4
prev parent reply other threads:[~2020-04-16 9:16 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-04-16 3:11 [PATCH 0/2] Bug fixes for FPGA DFL Xu Yilun
2020-04-16 3:11 ` [PATCH 1/2] fpga: dfl: pci: reduce the scope of variable 'ret' Xu Yilun
2020-04-16 8:04 ` Wu, Hao
2020-04-16 16:56 ` Tom Rix
2020-04-17 1:56 ` Xu Yilun
2020-04-17 3:05 ` Wu, Hao
2020-04-17 3:21 ` Xu Yilun
2020-04-17 5:55 ` Wu, Hao
2020-04-16 3:11 ` [PATCH 2/2] fpga: dfl: fix bug in port reset handshake Xu Yilun
2020-04-16 8:06 ` Wu, Hao [this message]
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=DM6PR11MB381991FD47E055D344B77D2985D80@DM6PR11MB3819.namprd11.prod.outlook.com \
--to=hao.wu@intel.com \
--cc=bhu@redhat.com \
--cc=linux-fpga@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=matthew.gerlach@linux.intel.com \
--cc=mdf@kernel.org \
--cc=trix@redhat.com \
--cc=yilun.xu@intel.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).