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Date:	Mon, 16 May 2016 15:08:08 +0200
From:	Michal Nazarewicz <>
To:	Felipe Balbi <>,
	Alan Stern <>
Cc:	"Du\, Changbin" <>,
	Al Viro <>,
	"gregkh\" <>,
	"rui.silva\" <>,
	"k.opasiak\" <>,
	"lars\" <>,
	"linux-usb\" <>,
	"linux-kernel\" <>
Subject: Re: [PATCH] usb: gadget: f_fs: report error if excess data received

> Alan Stern <> writes:
>> The point is that you don't know whether the host sent more data than
>> expected.  All you know is that the host sent more data than the user
>> asked the kernel for -- but maybe the user didn't ask for all the
>> data that he expected.  Maybe the user wanted to retrieve the full
>> set of data using two read() system calls.

On Mon, May 16 2016, Felipe Balbi wrote:
> right, but that just means we need to buffer the data instead of bailing
> out of the first read() completely.


I have a ~4h bus ride ahead of me so I’ll try to implement it.  If you
don’t hear from me by the end of the day, there probably wasn’t enough
space/comfort in the bus to use a laptop.

Best regards
ミハウ “𝓶𝓲𝓷𝓪86” ナザレヴイツ
«If at first you don’t succeed, give up skydiving»

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