RE: [PATCH] usb: gadget: return the right length in ffs_epfile_io()

[Liu, Chuansheng]

Hello Balbi,

> -----Original Message-----
> From: Felipe Balbi [mailto:balbi@xxxxxx]
> Sent: Tuesday, March 04, 2014 12:30 AM
> To: Liu, Chuansheng
> Cc: balbi@xxxxxx; gregkh@xxxxxxxxxxxxxxxxxxx; mina86@xxxxxxxxxx;
> linux-usb@xxxxxxxxxxxxxxx; linux-kernel@xxxxxxxxxxxxxxx; Cohen, David A;
> Zhuang, Jin Can; Wang, Yu Y
> Subject: Re: [PATCH] usb: gadget: return the right length in ffs_epfile_io()
> 
> Hi,
> 
> On Thu, Feb 27, 2014 at 02:49:31PM +0800, Chuansheng Liu wrote:
> > When the request length is aligned to maxpacketsize, sometimes
> > the return length ret > the user space requested len.
> >
> > At that time, we will use min_t(size_t, ret, len) to limit the
> > size in case of user data buffer overflow.
> >
> > But we need return the min_t(size_t, ret, len) to tell the user
> > space rightly also.
> >
> > Signed-off-by: Chuansheng Liu <chuansheng.liu@xxxxxxxxx>

> please rebase on my "testing/next" branch

Based on your branch "testing/next", I have sent patch v2 with some ack
and reviewing, thanks.

[PATCH v2] usb: gadget: return the right length in ffs_epfile_io()


Best Regards
Chuansheng

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/