From mboxrd@z Thu Jan 1 00:00:00 1970 From: Bjorn Helgaas Date: Wed, 14 Apr 2004 15:25:38 +0000 Subject: Re: oops in serial_out in 2.6.5 Message-Id: <200404140925.38296.bjorn.helgaas@hp.com> List-Id: References: <20040413063757.GA11350@hp.com> In-Reply-To: <20040413063757.GA11350@hp.com> MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: linux-ia64@vger.kernel.org On Tuesday 13 April 2004 5:55 pm, Martin Pool wrote: > /dev/ttyS0 uart 16550A port 0x0000 irq 59 baud_base 115200 spd_normal skip_test > auto_irq > /dev/ttyS1 uart 16550A port 0x0000 irq 60 baud_base 115200 spd_normal skip_test > auto_irq > /dev/ttyS2 uart 16550A port 0x0000 irq 57 baud_base 115200 spd_normal skip_test > /dev/ttyS3 uart 16550A port 0x0000 irq 57 baud_base 115200 spd_normal skip_test > /dev/ttyS4 uart 16550A port 0x0000 irq 57 baud_base 115200 spd_normal skip_test > /dev/ttyS5 uart 16550A port 0x0000 irq 57 baud_base 115200 spd_normal skip_test Notice that setserial is missing some smarts about MMIO UARTS (see the "port 0x0000" above). I poked at this a while back, but it seemed sort of ugly to fix, IIRC. Removing setserial seemed to be the easiest workaround. > Apr 13 16:18:25 kate kernel: Serial: 8250/16550 driver $Revision: 1.90 $ 4 ports, IRQ sharing enabled > Apr 13 16:18:25 kate kernel: ttyS0 at MMIO 0xf4050000 (irq = 49) is a 16550A > Apr 13 16:18:25 kate kernel: GSI 0x22(high,edge) -> CPU 0x0000 vector 75 > Apr 13 16:18:25 kate kernel: ttyS1 at MMIO 0xff5e0000 (irq = 75) is a 16550A > Apr 13 16:18:25 kate kernel: GSI 0x23(high,edge) -> CPU 0x0000 vector 76 > Apr 13 16:18:25 kate kernel: ttyS2 at MMIO 0xff5e2000 (irq = 76) is a 16550A > Apr 13 16:18:25 kate kernel: PCI: Found IRQ 49 for device 0000:e0:01.0 > Apr 13 16:18:25 kate kernel: IOSAPIC: vector 49 -> CPU 0x0100, enabled > Apr 13 16:18:25 kate kernel: ttyS3 at MMIO 0xf4051000 (irq = 49) is a 16450 > Apr 13 16:18:25 kate kernel: PCI: Found IRQ 49 for device 0000:e0:01.1 > Apr 13 16:18:25 kate kernel: IOSAPIC: vector 49 -> CPU 0x0000, enabled > Apr 13 16:18:25 kate kernel: Couldn't register serial port 0000:e0:01.1: -28