* Remove smp_lock.h from files which don't need it (including some headers!)
* Add smp_lock.h to files which do need it
* Make smp_lock.h include conditional in hardirq.h
It's needed only for one kernel_locked() usage which is under CONFIG_PREEMPT
This will make hardirq.h inclusion cheaper for every PREEMPT=n config
(which includes allmodconfig/allyesconfig, BTW)
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
The current build shows a warning with the DTL-1 driver:
CC [M] drivers/bluetooth/dtl1_cs.o
drivers/bluetooth/dtl1_cs.c: In function ‘dtl1_hci_send_frame’:
drivers/bluetooth/dtl1_cs.c:396: warning: ‘nsh.type’ may be used uninitialized in this function
Fix this by adding a proper error for unknown packet types.
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Bluetooth shouldn't be doing this as most drivers don't support the flag,
furthermore it shouldn't be needed with newer buffering. This becomes rather
more visible as the locking fixes make the abuse of low_latency visible as
spew on the users console/dmesg.
Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
There are several pretty much unfixable races in the old ldisc code, especially
with respect to pty behaviour and also to hangup. It's easier to rewrite the
code than simply try and patch it up.
This patch
- splits the ldisc from the tty (so we will be able to refcount it more cleanly
later)
- introduces a mutex lock for ldisc changing on an active device
- fixes the complete mess that hangup caused
- implements hopefully correct setldisc/close/hangup locking
There are still some problems around pty pairs that have always been there but
at least it is now possible to understand the code and fix further problems.
This fixes the following known bugs
- hang up can leak ldisc references
- hang up may not call open/close on ldisc in a matched way
- pty/tty pairs can deadlock during an ldisc change
- reading the ldisc proc files can cause every ldisc to be loaded
and probably a few other of the mysterious ldisc race reports.
I'm sure it also adds the odd new one.
Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
The virtual driver implements fasync and ioctl support, but it is not used
and unneeded due to its constraints via the Bluetooth core layer. So too
just make the driver simpler, remove support for both of them.
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
The BKL push down added some BKL into the open callback of the virtual
driver. The driver is really simple and need no such locking and so just
remove it.
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
The virtual driver still uses a home grown way of waiting for events and
so just replace it with wait_event_interruptible. And while at it remove
the useless access_ok() checks.
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Allowing to specify a specific misc minor number for the virtual driver
is pretty much useless and nobody is using this feature. So just remove
it and use MISC_DYNAMIC_MINOR all the time.
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Submitting the bulk URBs for ACL data transfers only on demand has no
real benefit compared to just submit them when a Bluetooth device gets
opened. So when submitting the interrupt URBs for HCI events, just
submit the bulk URBs, too.
This solves a problem with some Bluetooth USB dongles that has been
reported over the last few month. These devices require that the bulk
URBs are actually present. These devices are really broken, but there
is nothing we can do about it.
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
This eliminates a sparse warning that symbol 'stat' shadows an earlier one.
Signed-off-by: Andre Haupt <andre@bitwigglers.org>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
With the introduction of CONFIG_DYNAMIC_PRINTK_DEBUG it is possible to
allow debugging without having to recompile the kernel. This patch turns
all BT_DBG() calls into pr_debug() to support dynamic debug messages.
As a side effect all CONFIG_BT_*_DEBUG statements are now removed and
some broken debug entries have been fixed.
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
This patch allows the Asus WL-BTD202 dongle to be used with a mono
headset without having to specify "options btusb force_scofix=1".
Based on a patch from Guillaume Bedot <littletux@zarb.org>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
The Bluetooth subsystem was not using the HCI Reset command when doing
device initialization. The Bluetooth 1.0b specification was ambiguous
on how the device firmware was suppose to handle it. Almost every device
was triggering a transport reset at the same time. In case of USB this
ended up in disconnects from the bus.
All modern Bluetooth dongles handle this perfectly fine and a lot of
them actually require that HCI Reset is sent. If not then they are
either stuck in their HID Proxy mode or their internal structures for
inquiry and paging are not correctly setup.
To handle old and new devices smoothly the Bluetooth subsystem contains
a quirk to force the HCI Reset on initialization. However maintaining
such a quirk becomes more and more complicated. This patch turns the
logic around and lets the old devices disable the HCI Reset command.
The only device where the HCI_QUIRK_NO_RESET is still needed are the
original Digianswer devices and dongles with an early CSR firmware.
CSR reported that they fixed this for version 12 firmware. The last
official release of version 11 firmware is build ID 115. The first
version 12 candidate was build ID 117.
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
The old hci_usb driver has been fully replaced with the new btusb driver
and all major distributions switched to the new driver now. This removes
it since it should not be used at all anymore.
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Following the pattern from hci_*.c, turn off BT_DBG messages unless
they have been requested via HCI_UART_DEBUG
Signed-off-by: Nick Pelly <npelly@google.com>
Acked-by: Brian Swetland <swetland@google.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Since size, addr, fcs, and tmp are unsigned, it would seem better to use
simple_strtoul that simple_strtol.
A simplified version of the semantic patch that makes this change is as
follows: (http://www.emn.fr/x-info/coccinelle/)
// <smpl>
@r2@
long e;
position p;
@@
e = simple_strtol@p(...)
@@
position p != r2.p;
type T;
T e;
@@
e =
- simple_strtol@p
+ simple_strtoul
(...)
// </smpl>
Signed-off-by: Julia Lawall <julia@diku.dk>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
This patch fixes accumulating of the header in case packet was requeued
in the error path.
Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
During suspend it is important that all URBs are cancelled and then on
resume re-submitted. This gives initial suspend/resume support.
Based on initial work from Oliver Neukum <oneukum@suse.de>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
With the addition of usb_unlink_anchored_urbs() it is possible to fully
control the bulk URBs from the notify callback. There is no need to
schedule work and so only do this for the ISOC URBs.
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
The URB submission routines need more fine grained control for the
mem_flags used by kmalloc(), usb_alloc_urb() and usb_submit_urb() to
better support different caller situations. Add a mem_flags parameter
and give the caller full control.
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Inspired by Sergio Luis' similar patches, I finally found
a case which is trivial enough that spatch won't choke
on it.
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@helsinki.fi>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
* git://git.kernel.org/pub/scm/linux/kernel/git/brodo/pcmcia-2.6:
fdomain_cs: Sort out modules with duplicate description
pcmcia: Whine harder about use of EXCLUSIVE
pcmcia: IRQ_TYPE_EXCLUSIVE is long obsoleted
