linux-kernel - RE: [PATCH 2/9][v3]usb:fsl:otg: Add support to add/remove usb host driver

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Message-ID: <SN1PR0301MB15832EA7544C1165A2DB47E3E0D00@SN1PR0301MB1583.namprd03.prod.outlook.com>
Date:	Wed, 6 May 2015 05:30:23 +0000
From:	Ramneek Mehresh <ramneek.mehresh@...escale.com>
To:	Alan Stern <stern@...land.harvard.edu>
CC:	Kernel development list <linux-kernel@...r.kernel.org>,
	Felipe Balbi <balbi@...com>,
	USB list <linux-usb@...r.kernel.org>,
	"gregkh@...uxfoundation.org" <gregkh@...uxfoundation.org>
Subject: RE: [PATCH 2/9][v3]usb:fsl:otg: Add support to add/remove usb host
 driver



> -----Original Message-----
> From: Alan Stern [mailto:stern@...land.harvard.edu]
> Sent: Wednesday, May 06, 2015 1:00 AM
> To: Mehresh Ramneek-B31383
> Cc: Kernel development list; Felipe Balbi; USB list;
> gregkh@...uxfoundation.org
> Subject: Re: [PATCH 2/9][v3]usb:fsl:otg: Add support to add/remove usb
> host driver
> 
> On Tue, 5 May 2015, Ramneek Mehresh wrote:
> 
> > Add workqueue to add/remove host driver (outside interrupt context)
> > upon each id change
> >
> > Signed-off-by: Ramneek Mehresh <ramneek.mehresh@...escale.com>
> > ---
> > Changes for v3:
> > 	- use overrides for ehci_fsl_overrides
> > 	- remove struct ehci_hcd from ehci_fsl
> > 	- move ehci_fsl to ehci-fsl.h
> 
> This patch changes at least three separate things:
> 
> 	It adds the workqueue stuff.
> 
> 	It replaces ehci_fsl_hc_driver with ehci_fsl_overrides.
> 
> 	It adds new fields into the overrides structure.
> 
understood
> A patch should do only one thing.  It certainly shouldn't make three separate,
> major changes!
> 
> Also, I'm not going to let you add new fields into the ehci_driver_overrides
> structure.  If you really need to override other routines, copy the approach
> used by ehci-tegra.c.
> 
Understood...but I would appreciate if you could please explain the harm in doing so

> Alan Stern

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