[PATCH 3.10 049/104] serial: 8250: Fix initialisation of Quatech cards with the AMCC PCI chip

[Greg Kroah-Hartman]

3.10-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Jonathan Woithe <jwoithe@xxxxxxxxxx>

commit 9c5320f8d7d9a2cf623e65d50e1113f34d9b9eb1 upstream.

Fix the initialisation of older Quatech serial cards which are fitted with
the AMCC PCI Matchmaker interface chip.

Signed-off-by: Jonathan Woithe (jwoithe@xxxxxxxxxx)
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>

---
 drivers/tty/serial/8250/8250_pci.c |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

--- a/drivers/tty/serial/8250/8250_pci.c
+++ b/drivers/tty/serial/8250/8250_pci.c
@@ -1260,10 +1260,10 @@ static int pci_quatech_init(struct pci_d
 		unsigned long base = pci_resource_start(dev, 0);
 		if (base) {
 			u32 tmp;
-			outl(inl(base + 0x38), base + 0x38);
+			outl(inl(base + 0x38) | 0x00002000, base + 0x38);
 			tmp = inl(base + 0x3c);
 			outl(tmp | 0x01000000, base + 0x3c);
-			outl(tmp, base + 0x3c);
+			outl(tmp &= ~0x01000000, base + 0x3c);
 		}
 	}
 	return 0;


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