From: vitalywool@gmail.com (Vitaly Wool)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH] mmci: sync DATAEND irq with dma transfer done
Date: Wed, 20 Apr 2011 18:46:05 +0200 [thread overview]
Message-ID: <BANLkTikr5B5YH+is18gYceCM1thjHgT-yQ@mail.gmail.com> (raw)
In-Reply-To: <BANLkTimrsn1MxY+L7_yt0b1LXmaXxpMHPg@mail.gmail.com>
Hi Linus,
> My rough guess (after looking at the VHDL code) is that
> RXDATAVLBL flag goes low when the FIFO is empty, but that
> doesn't mean that the DMA handshake logic is out of its send/recieve
> state and thus we screw it up if we hammer in another transfer before
> it has had time to deassert the single/burst request signals and go to
> idle state. This can only be seen by the side effect of the DMA
> transfer actually terminating, and the DMA engine calling its
> callback.
next prev parent reply other threads:[~2011-04-20 16:46 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-04-19 9:02 [PATCH] mmci: sync DATAEND irq with dma transfer done Linus Walleij
2011-04-19 9:20 ` Russell King - ARM Linux
2011-04-19 12:00 ` Linus Walleij
2011-04-19 12:03 ` Russell King - ARM Linux
2011-04-20 16:29 ` Linus Walleij
2011-04-20 16:46 ` Vitaly Wool [this message]
2011-04-20 17:17 ` Linus Walleij
2011-04-20 17:58 ` Vitaly Wool
2011-04-20 20:11 ` Linus Walleij
2011-04-28 17:03 ` Russell King - ARM Linux
2011-04-28 22:24 ` Martin Furmanski
2011-05-11 20:13 ` Linus Walleij
2011-04-29 12:44 ` Ulf Hansson
2011-04-29 13:49 ` Russell King - ARM Linux
2011-05-06 8:13 ` Ulf Hansson
2011-05-12 8:36 ` Per Forlin
2011-05-12 13:15 ` Linus Walleij
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=BANLkTikr5B5YH+is18gYceCM1thjHgT-yQ@mail.gmail.com \
--to=vitalywool@gmail.com \
--cc=linux-arm-kernel@lists.infradead.org \
/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).