From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Jonathan Woithe Subject: [PATCH 3.13 066/140] serial: 8250: Fix initialisation of Quatech cards with the AMCC PCI chip Date: Tue, 4 Feb 2014 13:10:53 -0800 Message-Id: <20140204211038.842788973@linuxfoundation.org> In-Reply-To: <20140204211036.967663852@linuxfoundation.org> References: <20140204211036.967663852@linuxfoundation.org> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Sender: linux-kernel-owner@vger.kernel.org List-ID: 3.13-stable review patch. If anyone has any objections, please let me know. ------------------ From: Jonathan Woithe 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 --- 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 @@ -1259,10 +1259,10 @@ 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;