lkml.org 
[lkml]   [2014]   [Aug]   [5]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [PATCH] brcmfmac: prevent watchdog from interfering with scanning and connecting

On 2014/8/5 0:52, Russell King - ARM Linux wrote:
> 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.
>
Yes, this should be sdhci-acpi bug, I will contact MMC people for this issue.


Thanks,
Zhonghui


\
 
 \ /
  Last update: 2014-08-05 08:03    [W:0.071 / U:0.760 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site