From: Anand Gadiyar <gadiyar@ti.com>
Date: Thu, 21 Aug 2008 14:51:00 +0000 (+0530)
Subject: MUSB: Fix index register corruption seen with g_ether and Windows host
X-Git-Tag: v2.6.27-rc5~55^2~7
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=fb85d991616046f1b640ed9c4eab9b44908dab74;p=pandora-kernel.git

MUSB: Fix index register corruption seen with g_ether and Windows host

If Indexed Mode register accesses are enabled, the ep0_rxstate()
function calls musb_g_ep0_giveback() before writing to the CSR
register. When control returns to this ep0_rxstate, the index
register contents are over-written. This causes the CSR register
write to fail.

Fixed by writing the correct value into the index register before
writing to the CSR.

This was observed only in ep0_rxstate() with g_ether loaded and
the device connected to a MS Windows host PC. Anticipatively fixed
ep0_txstate() as well.

Signed-off-by: Anand Gadiyar <gadiyar@ti.com>
Acked-by: Felipe Balbi <felipe.balbi@nokia.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
---

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