Moved serial_open_count in hso_serial_open to
prevent crashes owing to the serial structure being made NULL
when hso_serial_close is called even though hso_serial_open
returned -ENODEV, Alan Cox pointed out this happens,
also put in sanity check in hso_serial_close
to check for a valid serial structure which should prevent
the most reproducable crash in the driver when the hso device
is disconnected while in use.
Signed-off-by: Denis Joseph Barrow <D.Barow@option.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Yup, this appears to be the problem, thanks. I think &hso_net->net->dev
is more intuitive for the error message, so I've used that. I've also
added missing line endings on the error messages and set our local
rfkill structure element to NULL on failure so we don't try to call
rfkill_unregister on driver removal if we failed to register at all.
The patch below Works For Me (TM); the device is detected fine, can be
removed without problems and connects ok. I'll have a prod at why the
rfkill stuff isn't working next, but I believe this cleanup of the error
handling is appropriate no matter what the issue with registration is.
Signed-Off-By: Jonathan McDowell <noodles@earth.li>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
Signed-off-by: Paulius Zaleckas <paulius.zaleckas@teltonika.lt>
Cc: Denis Joseph Barrow <D.Barow@option.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
Patch to stop loss of characters on the hso modems,
this patch throttles & unthrottles the modem by
not putting out urbs until the tty/line discipline layer
has enough space for newly received packets.
serial ports. This is required for firmware diagnostics
being done at Option.
Signed-off-by: Denis Joseph Barrow <D.Barow@option.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
hso_serial_common_free() mustn't be called if
hso_serial_common_create() fails.
Reported-by: Adrian Bunk <bunk@kernel.org>
Signed-off-by: Adrian Bunk <bunk@kernel.org>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
Fixes dev_kfree_skb happening too many times when hso_start_net_device
is called from hso_resume.
Signed-off-by: Denis Joseph Barrow <D.Barow@option.com>
Cc: Jeff Garzik <jgarzik@pobox.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
Fix up problems in hso.c driver as pointed out by Andrew.
Cc: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
As recommended by Arjan.
Cc: Arjan van de Ven <arjan@infradead.org>
Cc: Andrew Bird <ajb@spheresystems.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
The references on ttyHSx devices were not decremented correctly when
the tty was closed. The helper freeing the serial devices was never
called because of that, and the module left some dangling sysfs
devices after being unloaded.
Signed-off-by: Olivier Blin <blino@mandriva.com>
Cc: Jari Tenhunen <jari.tenhunen@iki.fi>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
The tty may be closed already when the read/write callbacks are called.
This patch checks that the ttys still exist before waking them up.
Signed-off-by: Olivier Blin <blino@mandriva.com>
Acked-by: Alan Cox <alan@redhat.com>
Cc: Jari Tenhunen <jari.tenhunen@iki.fi>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
This driver is for a number of different Option devices. Originally
written by Option and Andrew Bird, but cleaned up massivly for
acceptance into mainline by me and others.
Many thanks to the following for their help in cleaning up the driver by
providing feedback and patches to it:
- Paulius Zaleckas <paulius.zaleckas@teltonika.lt>
- Oliver Neukum <oliver@neukum.org>
- Alan Cox <alan@lxorguk.ukuu.org.uk>
- Javier Marcet <javier@krausbeck.org>
Cc: Andrew Bird <ajb@spheresystems.co.uk>
Cc: Javier Marcet <javier@krausbeck.org>
Cc: Filip Aben <f.aben@option.com>
Cc: Paulius Zaleckas <paulius.zaleckas@teltonika.lt>
Cc: Oliver Neukum <oliver@neukum.org>
Acked-by: Alan Cox <alan@lxorguk.ukuu.org.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
