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linux/drivers/parport
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Sudip Mukherjee 03270c6ac6 parport: fix attempt to write duplicate procfiles 
Usually every parallel port will have a single pardev registered with
it. But ppdev driver is an exception. This userspace parallel port
driver allows to create multiple parrallel port devices for a single
parallel port. And as a result we were having a nice warning like:
"sysctl table check failed:
/dev/parport/parport0/devices/ppdev0/timeslice Sysctl already exists"

Use the same logic as used in parport_register_device() and register
the proc files only once for each parallel port.

Fixes: 6fa45a2268 ("parport: add device-model to parport subsystem")
Cc: stable <stable@vger.kernel.org> # v4.4+
Bugzilla: https://bugzilla.redhat.com/show_bug.cgi?id=1414656
Bugzilla: https://bugs.archlinux.org/task/52322
Tested-by: James Feeney <james@nurealm.net>
Signed-off-by: Sudip Mukherjee <sudip.mukherjee@codethink.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-03-16 17:32:21 +09:00
..
BUGS-parport
daisy.c sched/headers: Prepare to move signal wakeup & sigpending methods from <linux/sched.h> into <linux/sched/signal.h> 2017-03-02 08:42:32 +01:00
ieee1284_ops.c sched/headers: Prepare to move signal wakeup & sigpending methods from <linux/sched.h> into <linux/sched/signal.h> 2017-03-02 08:42:32 +01:00
ieee1284.c sched/headers: Prepare to move signal wakeup & sigpending methods from <linux/sched.h> into <linux/sched/signal.h> 2017-03-02 08:42:32 +01:00
Kconfig parport: fix menu breakage 2014-07-25 18:00:23 -07:00
Makefile
multiface.h
parport_amiga.c parport: drop owner assignment from platform_drivers 2014-10-20 16:21:20 +02:00
parport_atari.c parport: parport_atari: Remove obsolete IRQ_TYPE_SLOW 2015-01-15 13:44:50 +01:00
parport_ax88796.c parport: drop owner assignment from platform_drivers 2014-10-20 16:21:20 +02:00
parport_cs.c drivers/parport: use module_pcmcia_driver() in pcmcia drivers 2013-03-15 12:26:38 -07:00
parport_gsc.c parisc, parport_gsc: Fixes for printk continuation lines 2017-01-28 21:54:21 +01:00
parport_gsc.h parisc: parport0: fix this legacy no-device port driver! 2013-06-01 14:46:42 +02:00
parport_ip32.c sched/headers: Prepare to move signal wakeup & sigpending methods from <linux/sched.h> into <linux/sched/signal.h> 2017-03-02 08:42:32 +01:00
parport_mfc3.c zorro: ZTWO_VADDR() should return "void __iomem *" 2013-11-26 11:09:07 +01:00
parport_pc.c sched/headers: Prepare to move signal wakeup & sigpending methods from <linux/sched.h> into <linux/sched/signal.h> 2017-03-02 08:42:32 +01:00
parport_serial.c parport: Add support for the WCH382 2S/1P multi-IO card 2014-11-06 14:58:21 -08:00
parport_sunbpp.c parport: drop owner assignment from platform_drivers 2014-10-20 16:21:20 +02:00
probe.c Replace <asm/uaccess.h> with <linux/uaccess.h> globally 2016-12-24 11:46:01 -08:00
procfs.c Replace <asm/uaccess.h> with <linux/uaccess.h> globally 2016-12-24 11:46:01 -08:00
share.c parport: fix attempt to write duplicate procfiles 2017-03-16 17:32:21 +09:00
TODO-parport