The driver uses "u32" for alignment check and calculation which
works only on 32-bit system. It will crash the 64-bit system.
Replace "u32" with "unsigned long" to fix this issue.
Signed-off-by: Bing Zhao <bzhao@marvell.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
The Marvell Bluetooth driver is full of Enter/Leave debug statements and
all of them are really pointless and only clutter the code. Seems to be
some left-overs when they ported the driver from Windows. For the Linux
driver lets remove these.
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
After fixing the driver to use skb_put properly for their HCI commands
only a few compiler warnings are left. Add proper casting for them.
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
The Marvell driver has some weird quirks on how to construct proper SKBs
with Bluetooth HCI commands. Fix it to use skb_put properly and also
use hci_opcode_pack instead of self-crafted macro.
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
For some reason the btmrvl_device struct has a name field that the SDIO
fills in, but then never ever uses again. That is totally pointless and
so just remove it.
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Make the module description entries for the core and also the Marvell
SDIO driver match common practive inside the Bluetooth subsystem.
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
The Marvell Bluetooth SDIO driver has a really complicated concept on how
firmware names are assigned to specific device ids. Fix that by doing a
proper structure and assign it to the module device table.
And while at it fix various coding style weirdness that is still present
in this driver.
Signed-off-by: Marcel Holtman <marcel@holtmann.org>
The Marvell core Bluetooth driver has various weird casting and unneeded
braces in its code that makes it hard to read. Remove all of these to
make the code a little bit simpler.
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
The Marvell Bluetooth driver has debugfs support and they are casting
like there is no tomorrow. Remove all of them and magically the code
becomes more readable.
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Both header files of the Marvell Bluetooth driver are private anyway and
if the driver happens to include them twice or they create a circular
dependency then the driver needs fixing. So just remove both pointless
ifdefs.
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
The Makefile entry for the Marvell driver is broken when it comes to
handling the optional DEBUG_FS correctly. That must have been the reason
why they were using select in Kconfig in the first place. Fix this and
make it really optional.
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
The Marvell driver selects DEBUG_FS and FW_LOADER for its core driver
and that is pointless. Don't select DEBUG_FS since it is either enabled
or not and it is not for the driver to enable it. Also FW_LOADER is
only used within the SDIO driver and so just have that one select the
FW_LOADER option.
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
/debug/btmrvl/config/
/debug/btmrvl/status/
See Documentation/btmrvl.txt for details.
This patch incorporates a lot of comments given by
Nicolas Pitre <nico@marvell.com>. Many thanks to Nicolas Pitre.
Signed-off-by: Rahul Tank <rahult@marvell.com>
Signed-off-by: Bing Zhao <bzhao@marvell.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
This driver supports Marvell Bluetooth enabled devices with SDIO
interface. Currently only SD8688 chip is supported.
The helper/firmware images of SD8688 can be downloaded from this tree:
git://git.infradead.org/users/dwmw2/linux-firmware.git
This patch incorporates a lot of comments given by
Nicolas Pitre <nico@marvell.com>. Many thanks to Nicolas Pitre.
Signed-off-by: Rahul Tank <rahult@marvell.com>
Signed-off-by: Bing Zhao <bzhao@marvell.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
This driver provides basic definitions and library functions to
support Marvell Bluetooth enabled devices, such as 88W8688 WLAN/BT
combo chip.
This patch incorporates a lot of comments given by
Nicolas Pitre <nico@marvell.com>. Many thanks to Nicolas Pitre.
Signed-off-by: Rahul Tank <rahult@marvell.com>
Signed-off-by: Bing Zhao <bzhao@marvell.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
This patch increases the receive buffer size to HCI_MAX_FRAME_SIZE
which improves the RX throughput considerably.
Tested against BRM/Atheros/CSR USB Dongles with PAN profile using
iperf and chariot. This gave significant (around 40%) increase
in performance (increased from 0.8 to 1.5 Mb/s in Sheld room)
Signed-off-by: Vikram Kandukuri <vikram.kandukuri@atheros.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
* 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>
Bing Zhao
Marcel Holtmann
Vikram Kandukuri
Alexey Dobriyan
David S. Miller
Alan Cox