linux-kernel - Re: [PATCH v1 6/6] usb: dwc3: core: Notify USB3 PHY as well for DRD modes

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Date:   Mon, 24 Jul 2017 15:29:29 +0530
From:   Manu Gautam <mgautam@...eaurora.org>
To:     Stephen Boyd <sboyd@...eaurora.org>,
        Kishon Vijay Abraham I <kishon@...com>,
        Felipe Balbi <balbi@...nel.org>
Cc:     linux-arm-msm@...r.kernel.org,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        "open list:DESIGNWARE USB3 DRD IP DRIVER" <linux-usb@...r.kernel.org>,
        open list <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v1 6/6] usb: dwc3: core: Notify USB3 PHY as well for DRD
 modes



On 7/21/2017 10:39 PM, Stephen Boyd wrote:
> On 07/21/2017 04:02 AM, Manu Gautam wrote:
>> Driver currently notifies only USB3 PHY for mode change.
>> Extend this to USB3 PHY so that driver based on the mode
>> can release system resources - clocks, regulators etc.
>> and can even turn off PHY during runtime suspend.
>>
>> Signed-off-by: Manu Gautam <mgautam@...eaurora.org>
> This patch is confusing because you say "notify for usb3 phy", but then
> combine a change to remove the NULL pointer check on phy_set_mode() for
> the usb2 phy. Please describe everything that's happening in a patch in
> the commit text.

Sure, will add a comment for that.
It was done to align with other phy_ops usage in the driver. Also, these
wrapper functions already have a NULL pointer check.