From: Mark Brown <broonie-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>
To: Trent Piepho <tpiepho-cgc2CodaaHDQT0dZR+AlfA@public.gmane.org>
Cc: "jassisinghbrar-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org"
<jassisinghbrar-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>,
"linux-spi-u79uwXL29TY76Z2rM5mHXA@public.gmane.org"
<linux-spi-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>,
"devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org"
<devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>,
"mark.rutland-5wv7dgnIgG8@public.gmane.org"
<mark.rutland-5wv7dgnIgG8@public.gmane.org>,
"jaswinder.singh-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org"
<jaswinder.singh-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org>,
"ard.biesheuvel-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org"
<ard.biesheuvel-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org>,
"robh+dt-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org"
<robh+dt-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>,
"masami.hiramatsu-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org"
<masami.hiramatsu-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org>
Subject: Re: [PATCHv1 2/3] spi: Add spi driver for Socionext Synquacer platform
Date: Wed, 10 Jan 2018 10:08:11 +0000 [thread overview]
Message-ID: <20180110100811.GA9003@sirena.org.uk> (raw)
In-Reply-To: <1515527945.25398.59.camel-cgc2CodaaHDQT0dZR+AlfA@public.gmane.org>
[-- Attachment #1: Type: text/plain, Size: 445 bytes --]
On Tue, Jan 09, 2018 at 07:59:05PM +0000, Trent Piepho wrote:
> Usually when a device has a fifo that must be emptied before it
> overflows, it is either emptied from an interrupt handler or the
> interrupt handler will queue a work function or tasklet that will empty
> it. Doing it from user context has a maximum latency that is too high.
It wouldn't be the first SPI controller that lacked interrupt support,
this is depressingly common.
[-- Attachment #2: signature.asc --]
[-- Type: application/pgp-signature, Size: 488 bytes --]
next prev parent reply other threads:[~2018-01-10 10:08 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-01-09 13:09 [PATCHv1 0/3] spi: support for Socionext Synquacer platform jassisinghbrar-Re5JQEeQqe8AvxtiuMwx3w
[not found] ` <1515503383-8909-1-git-send-email-jassisinghbrar-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
2018-01-09 13:10 ` [PATCHv1 1/3] dt-bindings: spi: Add DT bindings for Synquacer jassisinghbrar-Re5JQEeQqe8AvxtiuMwx3w
[not found] ` <1515503432-8971-1-git-send-email-jassisinghbrar-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
2018-01-09 16:44 ` Mark Brown
2018-01-09 13:10 ` [PATCHv1 2/3] spi: Add spi driver for Socionext Synquacer platform jassisinghbrar-Re5JQEeQqe8AvxtiuMwx3w
[not found] ` <1515503448-9025-1-git-send-email-jassisinghbrar-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
2018-01-09 17:41 ` Mark Brown
[not found] ` <20180109174141.GF11471-GFdadSzt00ze9xe1eoZjHA@public.gmane.org>
2018-01-15 12:54 ` Jassi Brar
2018-01-09 19:59 ` Trent Piepho
[not found] ` <1515527945.25398.59.camel-cgc2CodaaHDQT0dZR+AlfA@public.gmane.org>
2018-01-10 10:08 ` Mark Brown [this message]
2018-01-15 13:05 ` Jassi Brar
2018-01-09 13:11 ` [PATCHv1 3/3] MAINTAINERS: Add entry for Synquacer SPI driver jassisinghbrar-Re5JQEeQqe8AvxtiuMwx3w
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=20180110100811.GA9003@sirena.org.uk \
--to=broonie-dgejt+ai2ygdnm+yrofe0a@public.gmane.org \
--cc=ard.biesheuvel-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org \
--cc=devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org \
--cc=jassisinghbrar-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org \
--cc=jaswinder.singh-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org \
--cc=linux-spi-u79uwXL29TY76Z2rM5mHXA@public.gmane.org \
--cc=mark.rutland-5wv7dgnIgG8@public.gmane.org \
--cc=masami.hiramatsu-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org \
--cc=robh+dt-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org \
--cc=tpiepho-cgc2CodaaHDQT0dZR+AlfA@public.gmane.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).