From: Stephen Warren <swarren@nvidia.com>
Date: Wed, 25 Apr 2012 18:31:10 +0000 (-0600)
Subject: USB: ehci-tegra: remove PORT_RWC_BITS when setting USB_PORT_FEAT_ENABLE
X-Git-Tag: v3.5-rc1~149^2~279
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=b08765749332c54c65c1a6515c01c6eb3fc1843e;p=pandora-kernel.git

USB: ehci-tegra: remove PORT_RWC_BITS when setting USB_PORT_FEAT_ENABLE

In the SetPortFeature/USB_PORT_FEAT_ENABLE case, ehci_hub_control()
would read from status_reg, modify the value, and write the result back to
status_reg. This would clear any bits in PORT_RWC_BITS that were set in
the register. Fix this by masking these bits off before the write.

This is logically the same change as 6d5f89c "USB: EHCI: remove
PORT_RWC_BITS when clearing USB_PORT_FEAT_ENABLE", but applied to the
Tegra driver rather than the USB core.

Signed-off-by: Stephen Warren <swarren@nvidia.com>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---

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