From: Alexander Stein <alexander.stein@systec-electronic.com>
To: Clemens Ladisch <clemens@ladisch.de>
Cc: Tomoya MORINAGA <tomoya-linux@dsn.okisemi.com>,
Alan Cox <alan@linux.intel.com>,
linux-serial@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH v2] pch_uart: Add MSI support
Date: Thu, 23 Jun 2011 09:37:17 +0200 [thread overview]
Message-ID: <201106230937.17628.alexander.stein@systec-electronic.com> (raw)
In-Reply-To: <4E02E856.70007@ladisch.de>
On Thursday 23 June 2011 09:16:38 Clemens Ladisch wrote:
> Alexander Stein wrote:
> > +++ b/drivers/tty/serial/pch_uart.c
> > @@ -1578,6 +1578,8 @@ static struct eg20t_port *pch_uart_init_port(struct
> > pci_dev *pdev,
> >
> > + pci_enable_msi(pdev);
>
> Pretty much every driver that tries this eventually ends up with
> a blacklist of devices that don't implement MSI correctly.
> Did you test this with all the models that are supported by this driver?
I don't have all models supported by this driver. So I could only test with
this one:
#lspci -v -s 02:0a.1
02:0a.1 Serial controller: Intel Corporation Device 8811 (prog-if 02 [16550])
Subsystem: Intel Corporation Device 8811
Flags: bus master, fast devsel, latency 0, IRQ 40
I/O ports at 9040 [size=8]
Memory at 9fefb2f0 (32-bit, non-prefetchable) [size=16]
Capabilities: [40] MSI: Mask- 64bit- Count=1/1 Enable+
Capabilities: [50] Power Management version 2
Kernel driver in use: pch_uart
There are 3 more for the other ports.
Regards,
Alexander
next prev parent reply other threads:[~2011-06-23 7:38 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-06-22 9:50 [PATCH] pch_uart: Add MSI support Alexander Stein
2011-06-23 0:14 ` Tomoya MORINAGA
2011-06-23 7:00 ` [PATCH v2] " Alexander Stein
2011-06-23 7:16 ` Clemens Ladisch
2011-06-23 7:37 ` Alexander Stein [this message]
2011-07-01 22:32 ` Greg KH
2011-07-04 6:58 ` [PATCH v3] " Alexander Stein
2011-07-22 12:39 ` Tomoya MORINAGA
2011-07-19 4:15 ` serial/pch_uart: AT command behavior Tomoya MORINAGA
2011-07-19 9:06 ` Alan Cox
2011-07-20 0:14 ` Tomoya MORINAGA
2011-07-20 12:49 ` Alan Cox
2011-06-23 0:34 ` [PATCH] pch_uart: Add MSI support Roland Dreier
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