From: Johan Hovold <jhovold@gmail.com>
Date: Thu, 10 Nov 2011 16:40:44 +0000 (+0100)
Subject: USB: serial: do not forward USB specific errors in write
X-Git-Tag: v3.3-rc1~153^2~61
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=c6249ff7521c0211e9daa37f07a4c016a5c4d454;p=pandora-kernel.git

USB: serial: do not forward USB specific errors in write

Use usb_translate_errors() to map USB-specific errors to errors
appropriate for user space (ENOMEM, ENODEV and EIO) in write.

Currently almost all serial drivers simply forward error codes from the
stack (e.g. from usb_submit_urb()), but these codes often have
different meanings in user-space. Doing the mapping in usb-serial core
simplifies driver code and allows for more consistent error reporting.

Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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