From: Jason Gunthorpe <jgg@nvidia.com>
To: cgel.zte@gmail.com
Cc: mkalderon@marvell.com, aelior@marvell.com, leon@kernel.org,
linux-rdma@vger.kernel.org, linux-kernel@vger.kernel.org,
Minghao Chi <chi.minghao@zte.com.cn>,
Zeal Robot <zealci@zte.com.cn>
Subject: Re: [PATCH] qedr: Remove unnecessary synchronize_irq() before free_irq()
Date: Tue, 17 May 2022 08:54:29 -0300 [thread overview]
Message-ID: <20220517115429.GA1901088@nvidia.com> (raw)
In-Reply-To: <20220513081647.1631141-1-chi.minghao@zte.com.cn>
On Fri, May 13, 2022 at 08:16:47AM +0000, cgel.zte@gmail.com wrote:
> From: Minghao Chi <chi.minghao@zte.com.cn>
>
> Calling synchronize_irq() right before free_irq() is quite useless. On one
> hand the IRQ can easily fire again before free_irq() is entered, on the
> other hand free_irq() itself calls synchronize_irq() internally (in a race
> condition free way), before any state associated with the IRQ is freed.
>
> Reported-by: Zeal Robot <zealci@zte.com.cn>
> Signed-off-by: Minghao Chi <chi.minghao@zte.com.cn>
> Acked-by: Michal Kalderon <michal.kalderon@marvell.com>
> ---
> drivers/infiniband/hw/qedr/main.c | 1 -
> 1 file changed, 1 deletion(-)
Applied to for-next, thanks
Jason
prev parent reply other threads:[~2022-05-17 11:54 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-05-13 8:16 [PATCH] qedr: Remove unnecessary synchronize_irq() before free_irq() cgel.zte
2022-05-15 10:12 ` [EXT] " Michal Kalderon
2022-05-17 11:54 ` Jason Gunthorpe [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=20220517115429.GA1901088@nvidia.com \
--to=jgg@nvidia.com \
--cc=aelior@marvell.com \
--cc=cgel.zte@gmail.com \
--cc=chi.minghao@zte.com.cn \
--cc=leon@kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-rdma@vger.kernel.org \
--cc=mkalderon@marvell.com \
--cc=zealci@zte.com.cn \
/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 an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.