From: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
To: buildroot@busybox.net
Subject: [Buildroot] [PATCH] Add ttyO devices to the mdev configuration and the static device table.
Date: Sun, 1 Jan 2012 21:50:10 +0100 [thread overview]
Message-ID: <20120101215010.3911add4@skate> (raw)
In-Reply-To: <1325438796-3287-1-git-send-email-fhunleth@troodon-software.com>
Hello Frank,
Le Sun, 1 Jan 2012 12:26:36 -0500,
Frank Hunleth <fhunleth@troodon-software.com> a ?crit :
> +/dev/ttyO c 666 0 0 253 0 0 1 4
Unfortunately, this does not work. The omap-serial driver does not
define its major number, its gets allocated by alloc_chrdev_region()
dynamically at runtime. Therefore, depending on the drivers that are
compiled into the kernel and their initialization order, the major
number of the omap-serial devices might be 253 or 252 or 251, etc.
Basically, with the omap-serial driver, there is no other choice than
using devtmpfs (optionally with mdev or udev).
Best regards,
Thomas Petazzoni
--
Thomas Petazzoni, Free Electrons
Kernel, drivers, real-time and embedded Linux
development, consulting, training and support.
http://free-electrons.com
next prev parent reply other threads:[~2012-01-01 20:50 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-01-01 17:26 [Buildroot] [PATCH] Add ttyO devices to the mdev configuration and the static device table Frank Hunleth
2012-01-01 20:50 ` Thomas Petazzoni [this message]
2012-01-02 1:03 ` Frank Hunleth
2012-01-02 7:44 ` Thomas Petazzoni
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