| From | Greg Kroah-Hartman <> | Subject | [PATCH 3.12 065/133] serial: 8250: Fix initialisation of Quatech cards with the AMCC PCI chip | Date | Tue, 4 Feb 2014 13:07:46 -0800 |
| |
3.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Jonathan Woithe <jwoithe@just42.net>
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@just42.net) Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
--- 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;
|