From: Olav Kongas <ok@artecdesign.ee>
Date: Mon, 17 Oct 2005 21:30:43 +0000 (-0700)
Subject: [PATCH] isp116x-hcd: fix handling of short transfers
X-Git-Tag: v2.6.14-rc5~33
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=e9b765decfb49ddc105d303d491e1bee9769436f;p=pandora-kernel.git

[PATCH] isp116x-hcd: fix handling of short transfers

Increased use of scatter-gather by usb-storage driver after 2.6.13 has
exposed a buggy codepath in isp116x-hcd, which was probably never
visited before: bug happened only for those urbs, for which
URB_SHORT_NOT_OK was set AND short transfer occurred.

The fix attached was tested in 2 ways: (a) it fixed failing
initialization of a flash drive with an embedded hub; (b) the fix was
tested with 'usbtest' against a modified g_zero driver (on top of
net2280), which generated short bulk IN transfers of various lengths
including multiples and non-multiples of max_packet_length.

Signed-off-by: Olav Kongas <ok@artecdesign.ee>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
---

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