From: Greg Edwards <edwardsg@sgi.com>
To: linux-ia64@vger.kernel.org
Subject: Re: [PATCH]: TIOCX: Do not autoload TIOCX & FPGA drivers
Date: Fri, 20 May 2005 18:50:45 +0000 [thread overview]
Message-ID: <20050520185045.GE20644@sgi.com> (raw)
In-Reply-To: <20050520131215.19334.51045.sendpatchset@prarit.boston.redhat.com>
On Fri, May 20, 2005 at 09:12:29AM -0400, Prarit Bhargava wrote:
| [PATCH]: ia64/sn : Do not autoload TIOCX & FPGA driver
|
| When built-in the TIOCX driver has functions exposed to the FPGA driver
| in the kernel. If a TIOCX is not found, this can lead to an oops when the
| FPGA attempts to register against the TIOCX driver.
|
| This fix makes found_tiocx_device a static int which is queried when FPGA
| driver(s) attempt to register against the TIOCX driver. The functions
| cx_driver_register and cx_driver_unregister now return -ENODEV and NULL
| respectively if nr_tiocx_found = 0, preventing the FPGA driver from loading.
Let's hold off on this until we understand the problem a little better.
This seems to be dependent on config settings. For example, it works fine
to have TIOCX and MBCS compiled statically if the kernel is compiled
CONFIG_IA64_SGI_SN2.
Greg
prev parent reply other threads:[~2005-05-20 18:50 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-05-20 13:12 [PATCH]: TIOCX: Do not autoload TIOCX & FPGA drivers Prarit Bhargava
2005-05-20 18:50 ` Greg Edwards [this message]
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