From: Jonathan Woithe Date: Mon, 9 Dec 2013 06:03:08 +0000 (+1030) Subject: serial: 8250: Fix initialisation of Quatech cards with the AMCC PCI chip X-Git-Url: http://drtracing.org/?a=commitdiff_plain;h=9c5320f8d7d9a2cf623e65d50e1113f34d9b9eb1;p=deliverable%2Flinux.git serial: 8250: Fix initialisation of Quatech cards with the AMCC PCI chip Fix the initialisation of older Quatech serial cards which are fitted with the AMCC PCI Matchmaker interface chip. Signed-off-by: Jonathan Woithe (jwoithe@just42.net) Cc: stable Signed-off-by: Greg Kroah-Hartman --- diff --git a/drivers/tty/serial/8250/8250_pci.c b/drivers/tty/serial/8250/8250_pci.c index 4697a514b80a..6063d1512429 100644 --- a/drivers/tty/serial/8250/8250_pci.c +++ b/drivers/tty/serial/8250/8250_pci.c @@ -1259,10 +1259,10 @@ static int pci_quatech_init(struct pci_dev *dev) 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;