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alloc failures use dump_stack so emitting an additional
out-of-memory message is an unnecessary duplication.
Remove the allocation failure messages.
Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
* 'for-linus2' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: (165 commits)
reiserfs: Properly display mount options in /proc/mounts
vfs: prevent remount read-only if pending removes
vfs: count unlinked inodes
vfs: protect remounting superblock read-only
vfs: keep list of mounts for each superblock
vfs: switch ->show_options() to struct dentry *
vfs: switch ->show_path() to struct dentry *
vfs: switch ->show_devname() to struct dentry *
vfs: switch ->show_stats to struct dentry *
switch security_path_chmod() to struct path *
vfs: prefer ->dentry->d_sb to ->mnt->mnt_sb
vfs: trim includes a bit
switch mnt_namespace ->root to struct mount
vfs: take /proc/*/mounts and friends to fs/proc_namespace.c
vfs: opencode mntget() mnt_set_mountpoint()
vfs: spread struct mount - remaining argument of next_mnt()
vfs: move fsnotify junk to struct mount
vfs: move mnt_devname
vfs: move mnt_list to struct mount
vfs: switch pnode.h macros to struct mount *
...
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git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core
* 'driver-core-next' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core: (73 commits)
arm: fix up some samsung merge sysdev conversion problems
firmware: Fix an oops on reading fw_priv->fw in sysfs loading file
Drivers:hv: Fix a bug in vmbus_driver_unregister()
driver core: remove __must_check from device_create_file
debugfs: add missing #ifdef HAS_IOMEM
arm: time.h: remove device.h #include
driver-core: remove sysdev.h usage.
clockevents: remove sysdev.h
arm: convert sysdev_class to a regular subsystem
arm: leds: convert sysdev_class to a regular subsystem
kobject: remove kset_find_obj_hinted()
m86k: gpio - convert sysdev_class to a regular subsystem
mips: txx9_sram - convert sysdev_class to a regular subsystem
mips: 7segled - convert sysdev_class to a regular subsystem
sh: dma - convert sysdev_class to a regular subsystem
sh: intc - convert sysdev_class to a regular subsystem
power: suspend - convert sysdev_class to a regular subsystem
power: qe_ic - convert sysdev_class to a regular subsystem
power: cmm - convert sysdev_class to a regular subsystem
s390: time - convert sysdev_class to a regular subsystem
...
Fix up conflicts with 'struct sysdev' removal from various platform
drivers that got changed:
- arch/arm/mach-exynos/cpu.c
- arch/arm/mach-exynos/irq-eint.c
- arch/arm/mach-s3c64xx/common.c
- arch/arm/mach-s3c64xx/cpu.c
- arch/arm/mach-s5p64x0/cpu.c
- arch/arm/mach-s5pv210/common.c
- arch/arm/plat-samsung/include/plat/cpu.h
- arch/powerpc/kernel/sysfs.c
and fix up cpu_is_hotpluggable() as per Greg in include/linux/cpu.h
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This resolves the conflict in the arch/arm/mach-s3c64xx/s3c6400.c file,
and it fixes the build error in the arch/x86/kernel/microcode_core.c
file, that the merge did not catch.
The microcode_core.c patch was provided by Stephen Rothwell
<sfr@canb.auug.org.au> who was invaluable in the merge issues involved
with the large sysdev removal process in the driver-core tree.
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-next into for-davem
Conflicts:
drivers/net/wireless/b43/dma.c
drivers/net/wireless/brcm80211/brcmfmac/dhd_linux.c
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The libertas scan thread expects priv->scan_req to be non-NULL. In theory,
it should always be set. In practice, we've seen the following oops:
[ 8363.067444] Unable to handle kernel NULL pointer dereference at virtual address 00000004
[ 8363.067490] pgd = c0004000
[ 8363.078393] [00000004] *pgd=00000000
[ 8363.086711] Internal error: Oops: 17 [#1] PREEMPT
[ 8363.091375] Modules linked in: fuse libertas_sdio libertas psmouse mousedev ov7670 mmp_camera joydev videobuf2_core videobuf2_dma_sg videobuf2_memops [last unloaded: scsi_wait_scan]
[ 8363.107490] CPU: 0 Not tainted (3.0.0-gf7ccc69 #671)
[ 8363.112799] PC is at lbs_scan_worker+0x108/0x5a4 [libertas]
[ 8363.118326] LR is at 0x0
[ 8363.120836] pc : [<bf03a854>] lr : [<00000000>] psr: 60000113
[ 8363.120845] sp : ee66bf48 ip : 00000000 fp : 00000000
[ 8363.120845] r10: ee2c2088 r9 : c04e2efc r8 : eef97005
[ 8363.132231] r7 : eee0716f r6 : ee2c02c0 r5 : ee2c2088 r4 : eee07160
[ 8363.137419] r3 : 00000000 r2 : a0000113 r1 : 00000001 r0 : eee07160
[ 8363.143896] Flags: nZCv IRQs on FIQs on Mode SVC_32 ISA ARM Segment kernel
[ 8363.157630] Control: 10c5387d Table: 2e754019 DAC: 00000015
[ 8363.163334] Process kworker/u:1 (pid: 25, stack limit = 0xee66a2f8)
While I've not found a smoking gun, there are two places that raised red flags
for me. The first is in _internal_start_scan, when we queue up a scan; we
first queue the worker, and then set priv->scan_req. There's theoretically
a 50mS delay which should be plenty, but doing things that way just seems
racy (and not in the good way).
The second is in the scan worker thread itself. Depending on the state of
priv->scan_channel, we cancel pending scan runs and then requeue a run in
300mS. We then send the scan command down to the hardware, sleep, and if
we get scan results for all the desired channels, we set priv->scan_req to
NULL. However, it that's happened in less than 300mS, what happens with
the pending scan run?
This patch addresses both of those concerns. With the patch applied, we
have not seen the oops in the past two weeks.
Signed-off-by: Andres Salomon <dilinger@queued.net>
Cc: stable@kernel.org
Signed-off-by: John W. Linville <linville@tuxdriver.com>
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DaveM said:
Please, this kind of stuff rots forever and not using bool properly
drives me crazy.
Joe Perches <joe@perches.com> gave me the spatch script:
@@
bool b;
@@
-b = 0
+b = false
@@
bool b;
@@
-b = 1
+b = true
I merely installed coccinelle, read the documentation and took credit.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
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git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless
Conflicts:
drivers/net/wireless/iwlwifi/iwl-agn.c
drivers/net/wireless/libertas/cfg.c
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In ancient times it was necessary to manually initialize the bus field of an
spi_driver to spi_bus_type. These days this is done in spi_driver_register(),
so we can drop the manual assignment.
The patch was generated using the following coccinelle semantic patch:
// <smpl>
@@
identifier _driver;
@@
struct spi_driver _driver = {
.driver = {
- .bus = &spi_bus_type,
},
};
// </smpl>
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Cc: Dan Williams <dcbw@redhat.com>
Cc: "John W. Linville" <linville@tuxdriver.com>
Cc: Christian Lamparter <chunkeey@googlemail.com>
Cc: Luciano Coelho <coelho@ti.com>
Cc: libertas-dev@lists.infradead.org
Cc: linux-wireless@vger.kernel.org
Acked-by: Luciano Coelho <coelho@ti.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux
Conflicts:
drivers/net/wireless/iwlegacy/iwl-debugfs.c
drivers/net/wireless/iwlegacy/iwl-rx.c
drivers/net/wireless/iwlegacy/iwl-scan.c
drivers/net/wireless/iwlegacy/iwl-tx.c
include/net/bluetooth/bluetooth.h
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This converts the drivers in drivers/net/* to use the
module_usb_driver() macro which makes the code smaller and a bit
simpler.
Added bonus is that it removes some unneeded kernel log messages about
drivers loading and/or unloading.
Cc: Wolfgang Grandegger <wg@grandegger.com>
Cc: Samuel Ortiz <samuel@sortiz.org>
Cc: Oliver Neukum <oliver@neukum.name>
Cc: Peter Korsgaard <jacmet@sunsite.dk>
Cc: Petko Manolov <petkan@users.sourceforge.net>
Cc: Steve Glendinning <steve.glendinning@smsc.com>
Cc: Christian Lamparter <chunkeey@googlemail.com>
Cc: "John W. Linville" <linville@tuxdriver.com>
Cc: Dan Williams <dcbw@redhat.com>
Cc: Jussi Kivilinna <jussi.kivilinna@mbnet.fi>
Cc: Ivo van Doorn <IvDoorn@gmail.com>
Cc: Gertjan van Wingerde <gwingerde@gmail.com>
Cc: Helmut Schaa <helmut.schaa@googlemail.com>
Cc: Herton Ronaldo Krzesinski <herton@canonical.com>
Cc: Hin-Tak Leung <htl10@users.sourceforge.net>
Cc: Larry Finger <Larry.Finger@lwfinger.net>
Cc: Chaoming Li <chaoming_li@realsil.com.cn>
Cc: Lucas De Marchi <lucas.demarchi@profusion.mobi>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Roel Kluin <roel.kluin@gmail.com>
Cc: Paul Gortmaker <paul.gortmaker@windriver.com>
Cc: Jiri Pirko <jpirko@redhat.com>
Cc: Pavel Roskin <proski@gnu.org>
Cc: Yoann DI-RUZZA <y.diruzza@lim.eu>
Cc: George <george0505@realtek.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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Convert various seemingly still compiled wireless drivers' .get_drvinfo
routines to use the preferred strlcpy() routine.
Signed-off-by: Rick Jones <rick.jones2@hp.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless into for-davem
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If we hit the default case in the switch in if_spi_host_to_card() we'll leak
the memory we allocated for 'packet'. This patch resolves the leak by freeing
the allocated memory in that case.
Signed-off-by: Jesper Juhl <jj@chaosbits.net>
Acked-by: Dan Williams <dcbw@redhat.com>
Cc: stable@vger.kernel.org
Signed-off-by: John W. Linville <linville@tuxdriver.com>
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CC [M] drivers/net/wireless/libertas/cfg.o
drivers/net/wireless/libertas/cfg.c: In function ‘lbs_ret_scan’:
drivers/net/wireless/libertas/cfg.c:636:24: warning: ignoring return value of ‘cfg80211_inform_bss’, declared with attribute warn_unused_result
drivers/net/wireless/libertas/cfg.c: In function ‘lbs_join_post’:
drivers/net/wireless/libertas/cfg.c:1766:21: warning: ignoring return value of ‘cfg80211_inform_bss’, declared with attribute warn_unused_result
Signed-off-by: John W. Linville <linville@tuxdriver.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless into for-davem
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use get_unaligned_le64() to get timestamp
Signed-off-by: Steven Miao <realmz6@gmail.com>
Acked-by: Dan Williams <dcbw@redhat.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
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* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (47 commits)
forcedeth: fix a few sparse warnings (variable shadowing)
forcedeth: Improve stats counters
forcedeth: remove unneeded stats updates
forcedeth: Acknowledge only interrupts that are being processed
forcedeth: fix race when unloading module
MAINTAINERS/rds: update maintainer
wanrouter: Remove kernel_lock annotations
usbnet: fix oops in usbnet_start_xmit
ixgbe: Fix compile for kernel without CONFIG_PCI_IOV defined
etherh: Add MAINTAINERS entry for etherh
bonding: comparing a u8 with -1 is always false
sky2: fix regression on Yukon Optima
netlink: clarify attribute length check documentation
netlink: validate NLA_MSECS length
i825xx:xscale:8390:freescale: Fix Kconfig dependancies
macvlan: receive multicast with local address
tg3: Update version to 3.121
tg3: Eliminate timer race with reset_task
tg3: Schedule at most one tg3_reset_task run
tg3: Obtain PCI function number from device
...
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Commit 2e30168b ("libertas: terminate scan when stopping interface")
adds cleanup code to lbs_eth_stop to call cfg80211_scan_done if there's
an outstanding cfg80211_scan_request. However, it assumes that the
scan request was allocated via the cfg80211 stack. Libertas has
its own internal allocation method, kept track of with
priv->internal_scan. This doesn't set scan_req->wiphy, amongst other
things, which results in hitting a BUG() when we call cfg80211_scan_done
on the request.
This provides a function to take care of the low-level scan_req cleanup
details. We simply call that to deal with finishing up scan requests.
The bug we were hitting was:
[ 964.321495] kernel BUG at net/wireless/core.h:87!
[ 964.329970] Unable to handle kernel NULL pointer dereference at virtual address 00000000
[ 964.341963] pgd = dcf80000
...
[ 964.849998] 9fe0: 00000000 beb417b8 4018e280 401e822c 60000010 00000004 00000000 00000000
[ 964.865007] [<c003104c>] (__bug+0x1c/0x28) from [<c0384ffc>] (cfg80211_scan_done+0x54/0x6c)
[ 964.895324] [<c0384ffc>] (cfg80211_scan_done+0x54/0x6c) from [<bf028bac>] (lbs_eth_stop+0x10c/0x188 [libertas])
[ 964.895324] [<bf028bac>] (lbs_eth_stop+0x10c/0x188 [libertas]) from [<c03002a0>] (__dev_close_many+0x94/0xc4)
[ 964.918995] [<c03002a0>] (__dev_close_many+0x94/0xc4) from [<c030037c>] (dev_close_many+0x78/0xe0)
Signed-off-by: Andres Salomon <dilinger@queued.net>
Acked-by: Dan Williams <dcbw@redhat.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
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Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
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These were getting the macros from an implicit module.h
include via device.h, but we are planning to clean that up.
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
drivers/net: Add export.h to wireless/brcm80211/brcmfmac/bcmsdh.c
This relatively recently added file uses EXPORT_SYMBOL and hence
needs export.h included so that it is compatible with the module.h
split up work.
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
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git://git.infradead.org/users/linville/wireless-next into for-davem
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The recent changes to only power the device when the interface up
introduced a bug: changing interface type, legal when the interface
is down, performs device I/O.
Fix this functionality by validating and recording the interface
type when the change is requested, but only applying the change
if/when the interface is brought up.
Signed-off-by: Daniel Drake <dsd@laptop.org>
Acked-by: Dan Williams <dcbw@redhat.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
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git://git.infradead.org/users/linville/wireless-next into for-davem
Conflicts:
Documentation/feature-removal-schedule.txt
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Recent patches added support for resetting the SD8686 hardware when
commands time out, which seems to happen quite frequently soon after
resuming the system from a Wake-on-WLAN-triggered resume.
At http://dev.laptop.org/ticket/10969 we see the same thing happen
with transmits. In this case, the hardware will fail to respond to
a frame passed for transmission, and libertas (correctly) will block
all further commands and transmissions as the hardware can only
deal with one thing at a time. This results in a lockup while the
system waits indefinitely for the dead card to respond.
Hook up a TX lockup timer to detect this and reset the hardware.
Signed-off-by: Daniel Drake <dsd@laptop.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
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git://git.infradead.org/users/linville/wireless-next into for-davem
Conflicts:
drivers/net/wireless/iwlwifi/iwl-pci.c
drivers/net/wireless/wl12xx/main.c
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When scanning for the broadcast SSID, there is no need to add the
SSID TLV (restoring the behaviour of the driver behaviour in the wext
days, confirmed in Marvell specifications).
If bssid is unspecified, the current scan code will usually fire off an
active scan probing for the specific requested SSID. However, if a scan
is ongoing (or has just finished), those scan results will be used
instead (even if that scan is totally different, e.g. a passive scan on
channel 4 for a different SSID). Fix this inconsistency by always
firing off a scan when associating without a bssid.
Signed-off-by: Daniel Drake <dsd@laptop.org>
Acked-by: Dan Williams <dcbw@redhat.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
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for-davem
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Normally, the v9 firmware will be loaded if it's available. However, on
OLPC XO-1 machines, the olpc-specific firmware supports extra functionality.
This makes the libertas driver attempt to load the custom firmware first
if the machine is an OLPC machine; if that fails (or it's not an OLPC
machine), fall back to attempting to load the other firmwares.
usb8388_olpc.bin is currently found in the linux-firmware repository.
Signed-off-by: Andres Salomon <dilinger@queued.net>
Acked-by: Dan Williams <dcbw@redhat.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-next into for-davem
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Since all wext specific code is removed, currently there is no
way to configure deep sleep mode. This patch removes deep sleep
configuration information in readme file.
Signed-off-by: Amitkumar Karwar <akarwar@marvell.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
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There was an extra semicolon so the if condition wasn't used. We
checked "priv->dev" twice instead of "priv->mesh_dev".
Signed-off-by: Dan Carpenter <error27@gmail.com>
Acked-by: Dan Williams <dcbw@redhat.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-next into for-davem
Conflicts:
drivers/staging/ath6kl/miscdrv/ar3kps/ar3kpsparser.c
drivers/staging/ath6kl/os/linux/ar6000_drv.c
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replace it by ndo_set_rx_mode
Signed-off-by: Jiri Pirko <jpirko@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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We always hit the goto and skip the printk(). The original code does
the right thing even though it looks messy.
Signed-off-by: Dan Carpenter <error27@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
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The SDIO card is now fully powered down when the network interface is
brought down.
Signed-off-by: Daniel Drake <dsd@laptop.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
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Modify the driver so that it does not function when the interface is
down, in preparation for runtime power management.
No commands can be run while the interface is down, so the ndo_dev_stop
routine now directly does all necessary work (including asking the device
to disconnect from the network and disabling multicast functionality)
directly.
power_save and power_restore hooks are added meaning that card drivers
can take steps to turn the device off when the interface is down.
The MAC address can now only be changed when all interfaces are down;
the new address will be programmed when an interface gets brought up.
This matches mac80211 behaviour.
Also, some small cleanups/simplifications were made in the surrounding
device handling logic.
Signed-off-by: Daniel Drake <dsd@laptop.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
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OLPC power management code has recently gone upstream. This piece
completes the puzzle for libertas_usb, which now programs the OLPC EC
for wlan wakeups when they have been requested.
Signed-off-by: Daniel Drake <dsd@laptop.org>
Acked-by: Dan Williams <dcbw@redhat.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
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Currently, "udevadm info -a -p /sys/class/net/wlan0" doesn't mention
the usb8xxx or libertas driver anywhere. This makes writing udev rules
a bit uncomfortable.
Using the USB interface as the parent device corrects the hierarchy.
Signed-off-by: Daniel Drake <dsd@laptop.org>
Acked-by: Dan Williams <dcbw@redhat.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
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The mesh device is now exposed as an interface of the wiphy.
This exposes the mesh device to the cfg80211 interface, allowing
mesh channel selection to be reimplemented, and available to
NetworkManager as it was before.
Some header tweaking was needed in order to implement lbs_mesh_activated().
Signed-off-by: Daniel Drake <dsd@laptop.org>
Acked-by: Dan Williams <dcbw@redhat.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-next-2.6 into for-davem
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Previously, the mesh was running whenever the appropriate hardware
and firmware was present.
Now we only run the mesh when the interface is running.
Also simplifies interface management a little.
Signed-off-by: Daniel Drake <dsd@laptop.org>
Acked-by: Dan Williams <dcbw@redhat.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
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Remove unused blindlist code.
Mark a few items const and static where possible. Involved some
code re-ordering, but no code changes.
Signed-off-by: Daniel Drake <dsd@laptop.org>
Acked-by: Dan Williams <dcbw@redhat.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-next-2.6 into for-davem
Conflicts:
net/bluetooth/l2cap_core.c
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When commands time out, corruption ensues. As lbs_complete_command()
is called without locking, the command node is mistakenly freed twice.
Also fixed up locking here in a few other places.
The nature of command timeout may be that the card didn't even
acknowledge receipt of the request. Detect this case and reset dnld_sent
so that other commands don't hang forever.
When cmdnodes are moved between the free list and the pending list,
their list heads should be reinitialized. Fixed this.
Sometimes commands are completed without actually submitting them or
removing them from cmdpendingq. We must remember to remove them from
cmdpendingq in these cases, so handle this in lbs_complete_command().
Harmless signals generated during suspend/resume were interrupting
lbs_cmd. Convert to an uninterruptible sleep to avoid this.
lbs_thread must be woken up every time there is some new work to do.
I found that when 2 commands are queued, ther completion of the first
command would not wake up lbs_thread to submit the second. Poke lbs_thread
at the end of lbs_complete_command() to fix this.
Signed-off-by: Daniel Drake <dsd@laptop.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
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Problems located in the two functions lbs_set_reg() and lbs_get_reg():
- The offset field of struct cmd_ds_reg_access was not filled in
- The test on the return code of lbs_cmd_with_response() in function
lbs_get_reg() was inverted
Signed-off-by: Olivier Sobrie <olivier@sobrie.be>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-next-2.6 into for-davem
Conflicts:
drivers/net/wireless/rtlwifi/pci.c
include/linux/netlink.h
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if_spi: Fix compilation warning - unused variable 'spi'
drivers/net/wireless/libertas/if_spi.c: In function ‘if_spi_init_card’:
drivers/net/wireless/libertas/if_spi.c:1035: warning: unused variable ‘spi’
The variable is used only in a macro which uses the args only for DEBUG builds.
Remove the 'spi' variable completely.
Signed-off-by: Nikanth Karthikesan <nikanth@google.com>
Acked-by: Dan Williams <dcbw@redhat.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
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At http://dev.laptop.org/ticket/10748 we are seeing a case of the
libertas firmware randomly stopping responding to commands after
resume. Careful monitoring of communications indicates a firmware or
hardware bug, which has been reported to Marvell.
Work around this issue by adding a reset_card method; this is
automatically called when command timeouts are detected and provides an
instant recovery to this situation.
Signed-off-by: Daniel Drake <dsd@laptop.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
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