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r8169: Preserve other Device Control bits when setting NOSNOOP_EN
authorBjorn Helgaas <bhelgaas@google.com>
Wed, 22 Aug 2012 16:29:42 +0000 (10:29 -0600)
committerBjorn Helgaas <bhelgaas@google.com>
Thu, 23 Aug 2012 16:11:12 +0000 (10:11 -0600)
Previously, when we turned on the "Enable No Snoop Bit," we cleared all
the other Device Control bits, including error reporting enables,
Max_Payload_Size, Max_Read_Request_Size, etc.  This patch preserves
all the other bits.

Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>

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