linux-kernel - Re: [REGRESSION] "USB: use kfifo to buffer usb-generic serial writes" causes gobi

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Message-Id: <201001191420.29652.oliver@neukum.org>
Date:	Tue, 19 Jan 2010 14:20:29 +0100
From:	Oliver Neukum <oliver@...kum.org>
To:	Matthew Garrett <mjg59@...f.ucam.org>
Cc:	dvomlehn@...co.com, gregkh@...e.de, linux-usb@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: [REGRESSION] "USB: use kfifo to buffer usb-generic serial writes" causes gobi_loader to hang

Am Montag, 18. Januar 2010 21:14:16 schrieb Matthew Garrett:

> drivers/usb/serial/generic.c: usb_serial_generic_write - port 0, 1565 
> bytes
> drivers/usb/serial/generic.c: usb_serial_generic_write - put 0 bytes 
> into fifo
> drivers/usb/serial/generic.c: usb_serial_generic_read_bulk_callback - 
> port 0

If the FIFO is full we can do nothing. Please try the attached patch.

	Regards
		Oliver

View attachment "0001-usb-serial-Deal-with-filled-FIFO.patch" of type "text/x-patch" (909 bytes)