From: Russell King - ARM Linux <linux@arm.linux.org.uk>
To: "Fu, Zhonghui" <zhonghui.fu@linux.intel.com>
Cc: Arend van Spriel <arend@broadcom.com>,
brudley@broadcom.com, Franky Lin <frankyl@broadcom.com>,
meuleman@broadcom.com, linville@tuxdriver.com,
pieterpg@broadcom.com, dekim@broadcom.com,
mcgrof@do-not-panic.com, antonio@open-mesh.com,
johannes.berg@intel.com, linux-wireless@vger.kernel.org,
brcm80211-dev-list@broadcom.com, netdev@vger.kernel.org,
linux-kernel@vger.kernel.org, linux-mmc@vger.kernel.org
Subject: Re: [PATCH] brcmfmac: prevent watchdog from interfering with scanning and connecting
Date: Mon, 4 Aug 2014 17:52:02 +0100 [thread overview]
Message-ID: <20140804165202.GG30282@n2100.arm.linux.org.uk> (raw)
In-Reply-To: <53DFB6A1.7040900@linux.intel.com>
On Tue, Aug 05, 2014 at 12:36:49AM +0800, Fu, Zhonghui wrote:
> Hi, Arend
>
> I investigated this issue, and its root cause is still that sdio
> controller can't receive interrupts from WiFi chip on sdio bus when
> sdio controller is in runtime suspend status. I am running 3.16-rc5
> linux kernel on ASUS T100TA tablet, and using sdhci-acpi driver.
That's the root cause. I fixed this with the Freescale i.MX SD driver
which is now able to report pending SDIO interrupts while runtime PM
suspended.
Other host drivers probably need fixing too, or having runtime PM
disabled on them - if you can't receive SDIO interrupts while runtime
PM suspended, then entering runtime PM while you have a SDIO device
attached is a bug.
This is something for the MMC people to deal with rather than Arend.
--
FTTC broadband for 0.8mile line: currently at 9.5Mbps down 400kbps up
according to speedtest.net.
next prev parent reply other threads:[~2014-08-04 16:52 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-06-16 5:49 [PATCH] brcmfmac: prevent watchdog from interfering with scanning and connecting Fu, Zhonghui
2014-06-16 8:15 ` Arend van Spriel
2014-06-19 16:28 ` Fu, Zhonghui
2014-06-19 16:37 ` Arend van Spriel
2014-07-21 7:42 ` Fu, Zhonghui
2014-07-24 15:22 ` Fu, Zhonghui
2014-08-04 16:36 ` Fu, Zhonghui
2014-08-04 16:52 ` Russell King - ARM Linux [this message]
2014-08-04 20:12 ` Arend van Spriel
[not found] ` <53DFE933.2080805-dY08KVG/lbpWk0Htik3J/w@public.gmane.org>
2014-08-05 5:42 ` Fu, Zhonghui
2014-08-05 5:38 ` Fu, Zhonghui
2014-08-04 17:29 ` Arend van Spriel
2014-08-04 16:47 ` Russell King - ARM Linux
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=20140804165202.GG30282@n2100.arm.linux.org.uk \
--to=linux@arm.linux.org.uk \
--cc=antonio@open-mesh.com \
--cc=arend@broadcom.com \
--cc=brcm80211-dev-list@broadcom.com \
--cc=brudley@broadcom.com \
--cc=dekim@broadcom.com \
--cc=frankyl@broadcom.com \
--cc=johannes.berg@intel.com \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-mmc@vger.kernel.org \
--cc=linux-wireless@vger.kernel.org \
--cc=linville@tuxdriver.com \
--cc=mcgrof@do-not-panic.com \
--cc=meuleman@broadcom.com \
--cc=netdev@vger.kernel.org \
--cc=pieterpg@broadcom.com \
--cc=zhonghui.fu@linux.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).