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authorSudip Mukherjee <sudipm.mukherjee@gmail.com>2017-03-06 23:23:42 +0000
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2017-03-16 17:32:21 +0900
commit03270c6ac6207fc55bbf9d20d195029dca210c79 (patch)
tree896ff6b9950bd99d7d0af511b82b6887175f4cb3 /drivers/parport/ieee1284.c
parentabda288bb207e5c681306299126af8c022709c18 (diff)
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: 6fa45a226897 ("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>
Diffstat (limited to 'drivers/parport/ieee1284.c')
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