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From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To: Felipe Balbi <felipe.balbi@linux.intel.com>
Cc: stable@vger.kernel.org, nsekhar@ti.com, rogerq@ti.com,
	januszx.dziedzic@intel.com
Subject: Re: [PATCH v2] usb: dwc3: gadget: delay unmap of bounced requests
Date: Mon, 10 Apr 2017 16:48:08 +0200	[thread overview]
Message-ID: <20170410144808.GA3433@kroah.com> (raw)
In-Reply-To: <20170410141513.7228-1-felipe.balbi@linux.intel.com>

On Mon, Apr 10, 2017 at 05:15:13PM +0300, Felipe Balbi wrote:
> From: Janusz Dziedzic <januszx.dziedzic@intel.com>
> 
> commit de288e36fe33f7e06fa272bc8e2f85aa386d99aa upstream.
> 
> In the case of bounced ep0 requests, we must delay DMA operation until
> after ->complete() otherwise we might overwrite contents of req->buf.
> 
> This caused problems with RNDIS gadget.
> 
> Cc: <stable@vger.kernel.org>
> Fixes: d62145929992 ("usb: dwc3: gadget: always unmap EP0 requests")
> Signed-off-by: Janusz Dziedzic <januszx.dziedzic@intel.com>
> Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
> ---
> 
> Note that this commit needs to be backported to all kernels where
> d62145929992 was backported.

This patch only applied to 4.10-stable.  It should go also to at least
4.4 and 4.9-stable, but it does not apply.  Can you provide a backport
for those kernels as well?

thanks,

greg k-h

  reply	other threads:[~2017-04-10 14:48 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2017-04-10 14:15 [PATCH v2] usb: dwc3: gadget: delay unmap of bounced requests Felipe Balbi
2017-04-10 14:48 ` Greg Kroah-Hartman [this message]
2017-04-10 14:54   ` Felipe Balbi

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