From: Vinod Koul <vkoul@kernel.org>
To: ldewangan@nvidia.com, jonathanh@nvidia.com,
thierry.reding@gmail.com, dmaengine@vger.kernel.org,
linux-tegra@vger.kernel.org, linux-kernel@vger.kernel.org,
Akhil R <akhilrajeev@nvidia.com>
Subject: Re: [PATCH v2 RESEND] dmaengine: tegra186: Fix residual calculation
Date: Thu, 28 Mar 2024 13:09:41 +0530 [thread overview]
Message-ID: <171161158127.113367.3353184486729352623.b4-ty@kernel.org> (raw)
In-Reply-To: <20240315124411.17582-1-akhilrajeev@nvidia.com>
On Fri, 15 Mar 2024 18:14:11 +0530, Akhil R wrote:
> The existing residual calculation returns an incorrect value when
> bytes_xfer == bytes_req. This scenario occurs particularly with drivers
> like UART where DMA is scheduled for maximum number of bytes and is
> terminated when the bytes inflow stops. At higher baud rates, it could
> request the tx_status while there is no bytes left to transfer. This will
> lead to incorrect residual being set. Hence return residual as '0' when
> bytes transferred equals to the bytes requested.
>
> [...]
Applied, thanks!
[1/1] dmaengine: tegra186: Fix residual calculation
commit: 30f0ced9971b2d8c8c24ae75786f9079489a012d
Best regards,
--
~Vinod
prev parent reply other threads:[~2024-03-28 7:39 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-03-15 12:44 [PATCH v2 RESEND] dmaengine: tegra186: Fix residual calculation Akhil R
2024-03-25 13:30 ` Thierry Reding
2024-03-28 7:39 ` Vinod Koul [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=171161158127.113367.3353184486729352623.b4-ty@kernel.org \
--to=vkoul@kernel.org \
--cc=akhilrajeev@nvidia.com \
--cc=dmaengine@vger.kernel.org \
--cc=jonathanh@nvidia.com \
--cc=ldewangan@nvidia.com \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-tegra@vger.kernel.org \
--cc=thierry.reding@gmail.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 read-only IMAP folder(s) and NNTP newsgroup(s).