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path: root/drivers/bluetooth
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* Bluetooth: Remove some pointless conditionals before kfree_skb()Wei Yongjun2009-02-27
| | | | | | | Remove some pointless conditionals before kfree_skb(). Signed-off-by: Wei Yongjun <yjwei@cn.fujitsu.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
* Bluetooth: Submit bulk URBs along with interrupt URBsMarcel Holtmann2009-02-27
| | | | | | | | | | | | | | 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>
* Bluetooth: Eliminate a sparse warning in bt3c driverAndre Haupt2009-02-27
| | | | | | | 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>
* Bluetooth: Enable per-module dynamic debug messagesMarcel Holtmann2008-11-30
| | | | | | | | | | | 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>
* Bluetooth: Allow SCO audio with Asus WL-BTD202 dongleMarcel Holtmann2008-11-30
| | | | | | | | | 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>
* Bluetooth: Send HCI Reset command by default on device initializationMarcel Holtmann2008-11-30
| | | | | | | | | | | | | | | | | | | | | | | | | | | 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>
* Bluetooth: Remove deprecated hci_usb driverMarcel Holtmann2008-11-30
| | | | | | | | 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>
* Bluetooth: Respect HCI_UART_DEBUG config in hci_ll.cNick Pelly2008-11-30
| | | | | | | | | 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>
* Bluetooth: Change simple_strtol to simple_strtoulJulia Lawall2008-11-30
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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>
* Bluetooth: Fix TX error path in btsdio driverTomas Winkler2008-11-30
| | | | | | | | 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>
* Bluetooth: Add suspend/resume support to btusb driverMarcel Holtmann2008-11-30
| | | | | | | | | 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>
* Bluetooth: Handle bulk URBs in btusb driver from notify callbackMarcel Holtmann2008-11-30
| | | | | | | | 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>
* Bluetooth: Add fine grained mem_flags usage to btusb driverMarcel Holtmann2008-11-30
| | | | | | | | | 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>
* bpa10x: free sk_buff with kfree_skbIlpo Järvinen2008-10-31
| | | | | | | | | | 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>
* Merge git://git.kernel.org/pub/scm/linux/kernel/git/brodo/pcmcia-2.6Linus Torvalds2008-10-30
|\ | | | | | | | | | | | | * 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
| * pcmcia: IRQ_TYPE_EXCLUSIVE is long obsoletedAlan Cox2008-10-17
| | | | | | | | | | | | | | | | | | Switch more drivers to dynamic sharing after checking their IRQ handlers use dev_id and are robust Signed-off-by: Alan Cox <alan@redhat.com> Acked-by: Marcel Holtmann <marcel@holtmann.org> Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>
* | btsdio: free sk_buff with kfree_skbSergio Luis2008-10-27
|/ | | | | | | free sk_buff with kfree_skb, instead of kree Signed-off-by: Sergio Luis <sergio@larces.uece.br> Signed-off-by: David S. Miller <davem@davemloft.net>
* Merge git://git.kernel.org/pub/scm/linux/kernel/git/brodo/pcmcia-2.6Linus Torvalds2008-10-13
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * git://git.kernel.org/pub/scm/linux/kernel/git/brodo/pcmcia-2.6: (49 commits) pcmcia: ioctl-internal definitions pcmcia: cistpl header cleanup pcmcia: remove unused argument to pcmcia_parse_tuple() pcmcia: card services header cleanup pcmcia: device_id header cleanup pcmcia: encapsulate ioaddr_t pcmcia: cleanup device driver header file pcmcia: cleanup socket services header file pcmcia: merge ds_internal.h into cs_internal.h pcmcia: cleanup cs_internal.h pcmcia: cs_internal.h is internal pcmcia: use dev_printk for cs_error() pcmcia: remove CS_ error codes alltogether pcmcia: deprecate CS_BAD_TUPLE pcmcia: deprecate CS_BAD_ARGS pcmcia: deprecate CS_BAD_BASE, CS_BAD_IRQ, CS_BAD_OFFSET and CS_BAD_SIZE pcmcia: deprecate CS_BAD_ATTRIBUTE, CS_BAD_TYPE and CS_BAD_PAGE pcmcia: deprecate CS_NO_MORE_ITEMS pcmcia: deprecate CS_IN_USE pcmcia: deprecate CS_CONFIGURATION_LOCKED ... Fix trivial conflict in drivers/pcmcia/ds.c manually
| * pcmcia: deprecate CS_SUCCESSDominik Brodowski2008-08-22
| | | | | | | | | | | | | | | | | | Instead of using own error or success codes, the PCMCIA code should rely on the generic return values. Therefore, replace all occurrences of CS_SUCCESS with 0. CC: netdev@vger.kernel.org Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>
| * pcmcia: pcmcia_config_loop() improvement by passing vccDominik Brodowski2008-08-22
| | | | | | | | | | | | | | | | By passing the current Vcc setting to the pcmcia_config_loop callback function, we can remove pcmcia_get_configuration_info() calls from many drivers. Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>
| * pcmcia: pcmcia_config_loop() default CIS entry handlingDominik Brodowski2008-08-22
| | | | | | | | | | | | | | Many drivers use the default CIS entry within their pcmcia_config_loop() callback function. Therefore, factor the default CIS entry handling out. Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>
| * pcmcia: pcmcia_config_loop() ConfigIndex unificationDominik Brodowski2008-08-22
| | | | | | | | | | | | | | Almost all drivers set p_dev->conf.ConfigIndex to cfg->index in the pcmcia_config_loop() callback function. Therefore, factor it out. Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>
| * pcmcia: use pcmcia_loop_config in bluetooth driversDominik Brodowski2008-08-22
| | | | | | | | | | | | | | | | Use the config loop helper in bluetooth pcmcia drivers. CC: Marcel Holtmann <marcel@holtmann.org> CC: linux-bluetooth@vger.kernel.org Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>
* | tty: some ICANON magic is in the wrong placesAlan Cox2008-10-13
| | | | | | | | | | | | | | | | | | Move the set up on ldisc change into the ldisc Move the INQ/OUTQ cases into the driver not in shared ioctl code where it gives bogus answers for other ldisc values Signed-off-by: Alan Cox <alan@redhat.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | Merge branch 'master' of ↵David S. Miller2008-10-08
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6 Conflicts: drivers/net/e1000e/ich8lan.c drivers/net/e1000e/netdev.c
| * | [Bluetooth] Add reset quirk for A-Link BlueUSB21 dongleMarcel Holtmann2008-10-06
| | | | | | | | | | | | | | | | | | | | | | | | The new A-Link Bluetooth dongle is another one based on the BCM2046 chip from Broadcom and it also needs to send HCI_Reset before it becomes fully operational. Without the quirk it will show a lot of I/O errors. Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
| * | [Bluetooth] Add reset quirk for new Targus and Belkin donglesMarcel Holtmann2008-10-06
| | | | | | | | | | | | | | | | | | | | | | | | | | | Targus and Belkin have come out with new Bluetooth 2.1 capable dongles using the latest BCM2046 chip from Broadcom. Both of them are so called HID proxy dongles and they need to send HCI_Reset before they become fully operational. Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
| * | [Bluetooth] Fix double frees on error paths of btusb and bpa10x driversMarcel Holtmann2008-10-06
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The transfer buffer of an URB will be automatically freed when using the URB_FREE_BUFFER transfer_flag. So the extra calls to kfree() will cause a double free. Reported-by: Justin Mattock <justinmattock@gmail.com> Signed-off-by: Rabin Vincent <rabin@rab.in> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
* | | Merge branch 'master' of ↵David S. Miller2008-10-01
|\| | | | | | | | | | | | | | | | | | | | | | | | | | | | | master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6 Conflicts: drivers/net/wireless/ath9k/core.c drivers/net/wireless/ath9k/main.c net/core/dev.c
| * | [Bluetooth] Fix USB disconnect handling of btusb driverMarcel Holtmann2008-09-22
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The USB transport specification for Bluetooth splits the ACL and SCO handling into two separate interfaces. In Linux it possible to probe and disconnect these interfaces independently. So make sure that both interfaces are tightly bound together. This fixes the suspend regression that some people have expierenced. Signed-off-by: Oliver Neukum <oneukum@suse.de> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
| * | [Bluetooth] Fix wrong URB handling of btusb driverMarcel Holtmann2008-09-22
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The btusb driver contains two typos that result in some buggy behavior, but the impact is not immediately visible. During initialization the submitting of interrupt URBs might fail and then make sure to remove the correct flag and not one of the hci_dev flags. When closing down the interface make sure to kill the anchor for the ISOC URBs and not kill the interrupt URBs twice. Also cancel any scheduled work when closing down the interface. Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
| * | [Bluetooth] Fix I/O errors on MacBooks with Broadcom chipsMarcel Holtmann2008-09-22
| | | | | | | | | | | | | | | | | | | | | | | | | | | The newer MacBooks contain a Broadcom based Bluetooth chip and to make this work properly, HCI_Reset must be send first. If HCI_Reset is not used then a lot of I/O errors show up and its triggers packets from non-existent ACL links. Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
* | | hci_usb: replace mb with smp_mbMing Lei2008-09-22
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | smp_mb is enough for ordering memory operations among processors,and mb is more expensive than smp_mb for UP machine, so replace it with smp_mb(). Signed-off-by: Ming Lei <tom.leiming@gmail.com> Acked-by: Marcel Holtmann <marcel@holtmann.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* | | bluetooth: hci_bcsp: Use SKB list interfaces instead of home-grown stuff.David S. Miller2008-09-22
|/ / | | | | | | Signed-off-by: David S. Miller <davem@davemloft.net>
* | [Bluetooth] Consolidate maintainers informationMarcel Holtmann2008-08-18
| | | | | | | | | | | | | | | | | | | | | | | | The Bluetooth entries for the MAINTAINERS file are a little bit too much. Consolidate them into two entries. One for Bluetooth drivers and another one for the Bluetooth subsystem. Also the MODULE_AUTHOR should indicate the current maintainer of the module and actually not the original author. Fix all Bluetooth modules to provide current maintainer information. Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
* | [Bluetooth] Add SCO support to btusb driverMarcel Holtmann2008-08-18
| | | | | | | | | | | | | | | | | | | | | | | | | | The new generic driver for Bluetooth USB devices was missing proper SCO support. The driver now claims the second interface for these USB devices to allow the flow of SCO packets. It also handles switching of the alternate setting and re-submission of isochronous URBs. The btusb driver is now a full replacement for hci_usb and thus the experimental tag has been removed and this driver is promoted as preferred one. Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
* | [Bluetooth] Add full quirk implementation for btusb driverMarcel Holtmann2008-08-07
| | | | | | | | | | | | | | | | This implements all the quirk handling from the hci_usb driver to the new btusb driver. Signed-off-by: Oliver Neukum <oneukum@suse.de> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
* | [Bluetooth] Removal of unnecessary ignore module parameterMarcel Holtmann2008-08-07
| | | | | | | | | | | | | | | | This removes the unnecessary ignore parameter, which is useless. There are alternate methods of kicking a driver off an USB device. Signed-off-by: Oliver Neukum <oneukum@suse.de> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
* | bluetooth: add quirks for a few hci_usb devicesMichael Frey2008-07-30
|/ | | | | | | | | | | | | | | | | | | Preface: The "Broadcom" device is on unreleased hardware, so I can't disclose the actual model. When the Dell 370 and 410 BT adapters are put into BT radio mode, they need to be prepared like many other Broadcom adapters. Also, add quirk Broadcom 2046 devices with HCI_RESET. Reference for this bug: https://launchpad.net/bugs/249448 Signed-off-by: Michael Frey <michael.frey@canonical.com> Signed-off-by: Mario Limonciello <Mario_Limonciello@Dell.com> Signed-off-by: Tim Gardner <tim.gardner@canonical.com> Signed-off-by: Ben Collins <ben.collins@canonical.com> Acked-by: Marcel Holtmann <marcel@holtmann.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6Linus Torvalds2008-07-20
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6: (1232 commits) iucv: Fix bad merging. net_sched: Add size table for qdiscs net_sched: Add accessor function for packet length for qdiscs net_sched: Add qdisc_enqueue wrapper highmem: Export totalhigh_pages. ipv6 mcast: Omit redundant address family checks in ip6_mc_source(). net: Use standard structures for generic socket address structures. ipv6 netns: Make several "global" sysctl variables namespace aware. netns: Use net_eq() to compare net-namespaces for optimization. ipv6: remove unused macros from net/ipv6.h ipv6: remove unused parameter from ip6_ra_control tcp: fix kernel panic with listening_get_next tcp: Remove redundant checks when setting eff_sacks tcp: options clean up tcp: Fix MD5 signatures for non-linear skbs sctp: Update sctp global memory limit allocations. sctp: remove unnecessary byteshifting, calculate directly in big-endian sctp: Allow only 1 listening socket with SO_REUSEADDR sctp: Do not leak memory on multiple listen() calls sctp: Support ipv6only AF_INET6 sockets. ...
| * Merge branch 'master' of ↵David S. Miller2008-07-18
| |\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | master.kernel.org:/pub/scm/linux/kernel/git/torvalds/linux-2.6 Conflicts: Documentation/powerpc/booting-without-of.txt drivers/atm/Makefile drivers/net/fs_enet/fs_enet-main.c drivers/pci/pci-acpi.c net/8021q/vlan.c net/iucv/iucv.c
| * | bluetooth/hci_bcsp: fix bitrev KconfigRandy Dunlap2008-07-15
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Fix bluetooth hci_bcsp Kconfig to avoid build errors: drivers/built-in.o: In function `bcsp_prepare_pkt': hci_bcsp.c:(.text+0x7e9ac): undefined reference to `bitrev16' drivers/built-in.o: In function `bcsp_recv': hci_bcsp.c:(.text+0x7f276): undefined reference to `bitrev16' hci_bcsp.c:(.text+0x7f293): undefined reference to `bitrev16' make[1]: *** [.tmp_vmlinux1] Error 1 Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com> Ackey-by: Marcel Holtmann <marcel@holtmann.org> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | bluetooth: hci_bcsp.c small cleanups/api usersHarvey Harrison2008-06-10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Use bitrev16 from lib/bitrev.c. Use the get_unaligned_be16 to get the crc from the packet, create a small helper function for this. Fix a shadowed variable sparse warning: drivers/bluetooth/hci_bcsp.c:218:26: warning: symbol 'hdr' shadows an earlier one drivers/bluetooth/hci_bcsp.c:187:5: originally declared here [akpm@linux-foundation.org: select CONFIG_BITREVERSE, noted by akinobu.mita@gmail.com] Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com> Acked-by: Marcel Holtmann <marcel@holtmann.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* | | tty: Ldisc revampAlan Cox2008-07-20
| |/ |/| | | | | | | | | | | | | | | | | | | | | Move the line disciplines towards a conventional ->ops arrangement. For the moment the actual 'tty_ldisc' struct in the tty is kept as part of the tty struct but this can then be changed if it turns out that when it all settles down we want to refcount ldiscs separately to the tty. Pull the ldisc code out of /proc and put it with our ldisc code. Signed-off-by: Alan Cox <alan@redhat.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | Merge branch 'for-2.6.27' of git://git.infradead.org/users/dwmw2/firmware-2.6Linus Torvalds2008-07-14
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * 'for-2.6.27' of git://git.infradead.org/users/dwmw2/firmware-2.6: (64 commits) firmware: convert sb16_csp driver to use firmware loader exclusively dsp56k: use request_firmware edgeport-ti: use request_firmware() edgeport: use request_firmware() vicam: use request_firmware() dabusb: use request_firmware() cpia2: use request_firmware() ip2: use request_firmware() firmware: convert Ambassador ATM driver to request_firmware() whiteheat: use request_firmware() ti_usb_3410_5052: use request_firmware() emi62: use request_firmware() emi26: use request_firmware() keyspan_pda: use request_firmware() keyspan: use request_firmware() ttusb-budget: use request_firmware() kaweth: use request_firmware() smctr: use request_firmware() firmware: convert ymfpci driver to use firmware loader exclusively firmware: convert maestro3 driver to use firmware loader exclusively ... Fix up trivial conflicts with BKL removal in drivers/char/dsp56k.c and drivers/char/ip2/ip2main.c manually.
| * | bluetooth: treat firmware data as constDavid Woodhouse2008-07-10
| |/ | | | | | | Signed-off-by: David Woodhouse <dwmw2@infradead.org>
* | Bluetooth VHCI: fasync BKL pushdownJonathan Corbet2008-07-02
| | | | | | | | Signed-off-by: Jonathan Corbet <corbet@lwn.net>
* | bluetooth-vhci: BKL pushdownArnd Bergmann2008-06-20
|/ | | | Signed-off-by: Arnd Bergmann <arnd@arndb.de>
* hci_usb.h: fix hard-to-trigger racePavel Machek2008-05-02
| | | | | | | | | | If someone tries to _urb_unlink while _urb_queue_head is running, he'll see _urb->queue == NULL and fail to do any locking. Prevent that from happening by strategically placed barriers. Signed-off-by: Pavel Machek <pavel@suse.cz> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* tty: add throttle/unthrottle helpersAlan Cox2008-04-30
| | | | | | | | | Something Arjan suggested which allows us to clean up the code nicely Signed-off-by: Alan Cox <alan@redhat.com> Cc: Arjan van de Ven <arjan@infradead.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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