linux-kernel - Re: [PATCH v3] brcmfmac: avoid duplicated suspend/resume operation

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Message-ID: <54F01FF9.50108@linux.intel.com>
Date:	Fri, 27 Feb 2015 15:42:49 +0800
From:	"Fu, Zhonghui" <zhonghui.fu@...ux.intel.com>
To:	David Laight <David.Laight@...LAB.COM>,
	Kalle Valo <kvalo@...eaurora.org>,
	"brudley@...adcom.com" <brudley@...adcom.com>,
	Arend van Spriel <arend@...adcom.com>,
	Franky Lin <frankyl@...adcom.com>,
	"meuleman@...adcom.com" <meuleman@...adcom.com>,
	"linville@...driver.com" <linville@...driver.com>,
	"pieterpg@...adcom.com" <pieterpg@...adcom.com>,
	"hdegoede@...hat.com" <hdegoede@...hat.com>,
	"wens@...e.org" <wens@...e.org>,
	"linux-wireless@...r.kernel.org" <linux-wireless@...r.kernel.org>,
	"brcm80211-dev-list@...adcom.com" <brcm80211-dev-list@...adcom.com>,
	"netdev@...r.kernel.org" <netdev@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v3] brcmfmac: avoid duplicated suspend/resume operation


On 2015/2/16 17:50, David Laight wrote:
>>> WiFi chip has 2 SDIO functions, and PM core will trigger
>>> twice suspend/resume operations for one WiFi chip to do
>>> the same things. This patch avoid this case.
> Do you want to suspend on the first or last request?
>
> In general it might be that one function is in use and
> something wants to suspend the other (as inactive).
>
> If they suspend together you might need to pretend the
> first function is suspended but only do the real power-saving
> device suspend when all the functions have been suspended.
I was in Chinese new-year vacation these few days. So sorry for late response.

Suspend/Resume entry functions of brcmfmac driver does not differentiate between two functions, performs the same operations instead.


Thanks,
Zhonghui
>
> 	David
>
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