From: Greg KH <gregkh@suse.de>
To: "Hans J. Koch" <hjk@linutronix.de>
Cc: Uwe Kleine-K??nig <Uwe.Kleine-Koenig@digi.com>,
linux-kernel@vger.kernel.org,
Jan Altenberg <jan.altenberg@linutronix.de>,
Thomas Gleixner <tglx@linutronix.de>,
Magnus Damm <magnus.damm@gmail.com>
Subject: Re: [PATCH 1/1] UIO: Add a write() function to enable/disable interrupts
Date: Fri, 23 May 2008 21:43:54 -0700 [thread overview]
Message-ID: <20080524044354.GA8129@suse.de> (raw)
In-Reply-To: <20080523135557.27fe4855@bluebox.local>
On Fri, May 23, 2008 at 01:55:57PM +0200, Hans J. Koch wrote:
> Sometimes it is necessary to enable/disable the interrupt of a UIO device
> from the userspace part of the driver. With this patch, the UIO kernel driver
> can implement an "irqcontrol()" function that does this. Userspace can write
> an s32 value to /dev/uioX (usually 0 or 1 to turn the irq off or on). The
> UIO core will then call the driver's irqcontrol function.
Why not just a new sysfs file for the uio device, irq_enabled, or
something like that? That way our main read/write path is left alone.
thanks,
greg k-h
next prev parent reply other threads:[~2008-05-24 4:45 UTC|newest]
Thread overview: 34+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-05-22 19:22 [PATCH 0/1] UIO: Add a write() function to enable/disable interrupts Hans J. Koch
2008-05-22 19:26 ` [PATCH 1/1] " Hans J. Koch
2008-05-22 19:47 ` Tom Spink
2008-05-22 20:08 ` Hans J. Koch
2008-05-22 20:26 ` Tom Spink
2008-05-23 5:41 ` Uwe Kleine-König
2008-05-23 8:51 ` Hans J. Koch
2008-05-23 11:48 ` Tom Spink
2008-05-23 11:58 ` Uwe Kleine-König
2008-05-23 12:00 ` Tom Spink
2008-05-23 12:14 ` Hans J. Koch
2008-05-23 12:20 ` Tom Spink
2008-05-23 13:01 ` Hans J. Koch
2008-05-23 5:55 ` Uwe Kleine-König
2008-05-23 8:44 ` Hans J. Koch
2008-05-23 9:10 ` Uwe Kleine-König
2008-05-23 10:03 ` Hans J. Koch
2008-05-23 10:56 ` Uwe Kleine-König
2008-05-23 11:55 ` Hans J. Koch
2008-05-23 12:03 ` Uwe Kleine-König
2008-05-23 18:36 ` Randy Dunlap
2008-05-23 22:49 ` Hans-Jürgen Koch
2008-06-04 6:30 ` Uwe Kleine-König
2008-06-04 7:05 ` Thomas Gleixner
2008-05-23 20:44 ` Leon Woestenberg
2008-05-23 22:43 ` Hans J. Koch
2008-05-24 0:02 ` Leon Woestenberg
2008-05-24 4:43 ` Greg KH [this message]
2008-05-24 22:20 ` Hans J. Koch
2008-05-24 22:22 ` Thomas Gleixner
2008-05-24 22:34 ` Tom Spink
2008-05-24 22:46 ` Thomas Gleixner
2008-05-24 23:00 ` Tom Spink
2008-05-27 17:55 ` Greg KH
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