The MBO pointer stacked_mbo and the boolean variable keep_mbo are
always changed together and therefore provide the same information.
This patch removes keep_mbo and uses stacked_mbo instead.
Signed-off-by: Christian Gromm <christian.gromm@microchip.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Dan Carpenter [Thu, 7 Jan 2016 09:34:13 +0000 (12:34 +0300)]
staging: unisys: remove some dead code
queue_delayed_work() returns bool, not negative error codes. It returns
false if the work has already been queued or true otherwise. Since
we don't care about that, we can just remove the test.
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Benjamin Romer <benjamin.romer@unisys.com> Acked-by: Don Zickus <dzickus@redhat.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Chaehyun Lim [Fri, 5 Feb 2016 01:35:13 +0000 (10:35 +0900)]
staging: wilc1000: fix return type of wilc_deinit
This patch changes return type of wilc_deinit from s32 to int.
The result variable gets return value from wilc_mq_send that has return
type of int. It should be changed return type of this function as well
as data type of result variable.
Chaehyun Lim [Fri, 5 Feb 2016 01:35:11 +0000 (10:35 +0900)]
staging: wilc1000: fix return type of wilc_hif_set_cfg
This patch changes return type of wilc_hif_set_cfg from s32 to int.
The result variable gets return value from wilc_mq_send that has data
type of int. It should be changed return type of this function as well
as data type of result variable.
Chris Park [Thu, 4 Feb 2016 09:24:30 +0000 (18:24 +0900)]
staging: wilc1000: remove unnecessary log message using GENERIC_DBG tag
This patch remove unnecessary log message using GENERIC_DBG tag.
Needed log messages has changed netdev_dbg from PRINT_D.
And removes variables that were used to log message.
Signed-off-by: Chris Park <chris.park@atmel.com> Signed-off-by: Leo Kim <leo.kim@atmel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Chris Park [Thu, 4 Feb 2016 09:24:29 +0000 (18:24 +0900)]
staging: wilc1000: remove unused debug tag
This patch remove unused debug tag INT_DBG, LOCK_DBG, BUS_DBG,
MEM_DBG and FIRM_DBG
Signed-off-by: Chris Park <chris.park@atmel.com> Signed-off-by: Leo Kim <leo.kim@atmel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Chris Park [Thu, 4 Feb 2016 09:24:28 +0000 (18:24 +0900)]
staging: wilc1000: remove unused log message using the RX_DBG tag
This patch remove unused log message using the RX_DBG tag
Signed-off-by: Chris Park <chris.park@atmel.com> Signed-off-by: Leo Kim <leo.kim@atmel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Chris Park [Thu, 4 Feb 2016 09:24:27 +0000 (18:24 +0900)]
staging: wilc1000: remove unnecessary wilc_rx_complete function
This patch remove unnecessary wilc_rx_complete function
because this function only print unused log message.
remove unused has_packet variable nomore.
Signed-off-by: Chris Park <chris.park@atmel.com> Signed-off-by: Leo Kim <leo.kim@atmel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This patch renames to avoid camelcase and remove prefix names,
changes follow are:
- u16capability to capability
- u16ConnectStatus to status
- u16AssocID to assoc_id
- pu8RespIEs to ies
- u16RespIEsLen to ies_len
Signed-off-by: Leo Kim <leo.kim@atmel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Leo Kim [Thu, 4 Feb 2016 09:24:07 +0000 (18:24 +0900)]
staging: wilc1000: removes function 'wilc_dealloc_assoc_resp_info()'
This patch removes function wilc_dealloc_assoc_resp_info()'.
Does not need this function which only free memory.
Therefore, this function is removed and changed directly with kfree.
Signed-off-by: Leo Kim <leo.kim@atmel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Leo Kim [Thu, 4 Feb 2016 09:24:06 +0000 (18:24 +0900)]
staging: wilc1000: removes function 'wilc_dealloc_network_info()'
This patch removes function 'wilc_dealloc_network_info()'.
Does not need this function which only free memory.
Therefore, this function is removed and changed directly with kfree.
Signed-off-by: Leo Kim <leo.kim@atmel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Chris Park [Thu, 4 Feb 2016 09:24:05 +0000 (18:24 +0900)]
staging: wilc1000: remove unused log message using the TX_DBG tag
This patch remove unused log message using the TX_DBG tag
Signed-off-by: Chris Park <chris.park@atmel.com> Signed-off-by: Leo Kim <leo.kim@atmel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Chris Park [Thu, 4 Feb 2016 09:24:04 +0000 (18:24 +0900)]
staging: wilc1000: remove unused log message using the HOSTINF_DBG tag
This patch remove unused log message using the HOSTINF_DBG tag
Signed-off-by: Chris Park <chris.park@atmel.com> Signed-off-by: Leo Kim <leo.kim@atmel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Chris Park [Thu, 4 Feb 2016 09:24:03 +0000 (18:24 +0900)]
staging: wilc1000: remove unused log message using the CORECONFIG_DBG tag
This patch remove unused log messages using the CORECONFIG_DBG tag
Signed-off-by: Chris Park <chris.park@atmel.com> Signed-off-by: Leo Kim <leo.kim@atmel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Chris Park [Thu, 4 Feb 2016 09:15:54 +0000 (18:15 +0900)]
staging: wilc1000: Optimize code of wilc_get_chipid function
This patch optimize code of wilc_get_chipid function.
u8 type changed to boolean type and removed unnecessary if statement.
Signed-off-by: Chris Park <chris.park@atmel.com> Signed-off-by: Leo Kim <leo.kim@atmel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Chris Park [Thu, 4 Feb 2016 09:15:53 +0000 (18:15 +0900)]
staging: wilc1000: remove warnings missing a blank line after declarations
This patch remove warnings reported by checkpatch.pl
for missing a blank line after declarations
Signed-off-by: Chris Park <chris.park@atmel.com> Signed-off-by: Leo Kim <leo.kim@atmel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Chris Park [Thu, 4 Feb 2016 09:15:52 +0000 (18:15 +0900)]
staging: wilc1000: remove unnecessary braces
This patch remove warnings reported by checkpatch.pl
for unnecessary braces
Signed-off-by: Chris Park <chris.park@atmel.com> Signed-off-by: Leo Kim <leo.kim@atmel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Chris Park [Thu, 4 Feb 2016 09:15:51 +0000 (18:15 +0900)]
staging: wilc1000: remove useless function
This patch remove useless function remove_TCP_related
in wilc_wlan.c file
Signed-off-by: Chris Park <chris.park@atmel.com> Signed-off-by: Leo Kim <leo.kim@atmel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Chris Park [Thu, 4 Feb 2016 09:15:50 +0000 (18:15 +0900)]
staging: wilc1000: remove useless log message
This patch remove useless log message in wilc_wlan.c file
Signed-off-by: Chris Park <chris.park@atmel.com> Signed-off-by: Leo Kim <leo.kim@atmel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Chris Park [Thu, 4 Feb 2016 09:15:49 +0000 (18:15 +0900)]
staging: wilc1000: fix warnings for line over 80 characters
This patch fixes warnings reported by checkpatch.pl
for line over 80 characters
Signed-off-by: Chris Park <chris.park@atmel.com> Signed-off-by: Leo Kim <leo.kim@atmel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Leo Kim [Thu, 4 Feb 2016 09:15:46 +0000 (18:15 +0900)]
staging: wilc1000: wilc_parse_assoc_resp_info(): renames local variables
This patch renames to avoid camelcase, changes follow are:
- pstrConnectRespInfo to connect_resp_info
- u16AssocRespLen to assoc_resp_len
- pu8IEs to ies
- u16IEsLen to ies_len
Signed-off-by: Leo Kim <leo.kim@atmel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Leo Kim [Thu, 4 Feb 2016 09:15:45 +0000 (18:15 +0900)]
staging: wilc1000: wilc_parse_assoc_resp_info(): renames function variables
This patch renames to avoid camelcase, changes follow are:
- pu8Buffer to buffer
- u32BufferLen to buffer_len
- ppstrConnectRespInfo to ret_connect_resp_info
Signed-off-by: Leo Kim <leo.kim@atmel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Leo Kim [Thu, 4 Feb 2016 09:15:44 +0000 (18:15 +0900)]
staging: wilc1000: rename variable s32Error
This patch renames variable s32Error to result
to avoid CamelCase naming convention.
Also, remove the unused variable s32Error and replace with direct return.
Signed-off-by: Leo Kim <leo.kim@atmel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Leo Kim [Thu, 4 Feb 2016 09:15:43 +0000 (18:15 +0900)]
staging: wilc1000: wilc_parse_network_info(): renames local inner variables
This patch renames to avoid camelcase, changes follow are:
- pu8TimElm to tim_elm
- pu8IEs to ies
- u16IEsLen to ies_len
- u32Tsf_Lo to tsf_lo
- u32Tsf_Hi to tsf_hi
And, remove the prefix variable defined name, below are:
- u8index to index
- pu8msa to msa
Signed-off-by: Leo Kim <leo.kim@atmel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Leo Kim [Thu, 4 Feb 2016 09:15:42 +0000 (18:15 +0900)]
staging: wilc1000: wilc_parse_network_info(): renames local variables
This patch renames to avoid camelcase, changes follow are:
- pstrNetworkInfo to network_info
- u8MsgType to msg_type
- u8MsgID to msg_id
- u16MsgLen to msg_len
- u16WidID to wid_id
- u16WidLen to wid_len
- pu8WidVal to wid_val
Signed-off-by: Leo Kim <leo.kim@atmel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Leo Kim [Thu, 4 Feb 2016 09:15:40 +0000 (18:15 +0900)]
staging: wilc1000: fixes variable dereferenced before check
This patch fixes the warning reported by smatch.
- wilc_wlan_get_firmware() warn: variable dereferenced before check 'vif'
- wilc_set_multicast_list() warn: variable dereferenced before check 'dev'
Just delete them and no need add null check since they are net_device from
ndo_set_rx_mode of net_device_ops and vif of netdev_priv.
Signed-off-by: Leo Kim <leo.kim@atmel.com> Signed-off-by: Glen Lee <glen.lee@atmel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Glen Lee [Thu, 4 Feb 2016 09:15:31 +0000 (18:15 +0900)]
staging: wilc1000: pass vif to wilc_send_config_pkt
This patch passes vif instead of wilc to wilc_send_config_pkt and it's related
functions as well, because we need vif which is currently being used and
vif has wilc as well.
Change custom print with netdev_xxx format if there are custom print inside
the functions we have changed.
Function parameter of following functions are modified to vif.
wilc_send_config_pkt
wilc_wlan_cfg_set
wilc_wlan_cfg_get
wilc_wlan_cfg_commit
wilc_wlan_txq_add_cfg_pkt
wilc_wlan_txq_add_to_head
Signed-off-by: Glen Lee <glen.lee@atmel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Glen Lee [Thu, 4 Feb 2016 09:15:30 +0000 (18:15 +0900)]
staging: wilc1000: move wilc_send_config_pkt to wilc_wlan.c
This patch moves the function wilc_send_config_pkt to wilc_wlan.c which
handles transport since the purpose of the function is sending/getting of
config information. coreconfiguator.[ch] will be rename with frame.[ch] later.
The print codes of the function is removed also and they will be implemented
with netdev_xx print format later.
struct wid need to be moved to wilc_wlan_if.h which defines configure
informations.
Signed-off-by: Glen Lee <glen.lee@atmel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Glen Lee [Thu, 4 Feb 2016 09:15:28 +0000 (18:15 +0900)]
staging: wilc1000: fix WEP security bug
Station cannot connect to soft AP mode wilc when it is configured for WEP
security. This patch fixes it by setting the key index within the key value and
change the last else condition with DEFAULTKEY action case, and also do not use
WILC_WFI_wep_default index to set wep key id.
Signed-off-by: Glen Lee <glen.lee@atmel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Glen Lee [Thu, 4 Feb 2016 09:15:21 +0000 (18:15 +0900)]
staging: wilc1000: handle connecting error
If connection fails, wilc1000_connecting needs to be set false also and return
immediately because goto lable 'done' doesn't do anything. Remove lable 'done'
as well.
Signed-off-by: Glen Lee <glen.lee@atmel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Glen Lee [Thu, 4 Feb 2016 09:15:18 +0000 (18:15 +0900)]
staging: wilc1000: wilc_set_wfi_drv_handler: add mac index
Firmware supports sta/ap concurrency so mac index will be passed to wilc.
Remove wilc_set_wfi_drv_handler in scan and connect functions, and call
the function in ndo_open which is wilc_mac_open.
WID_SET_DRV_HANDLER value has been changed as well.
Signed-off-by: Glen Lee <glen.lee@atmel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Oleg Drokin [Sat, 6 Feb 2016 07:12:12 +0000 (02:12 -0500)]
staging/lustre/lnet: Don't call roundup_pow_of_two on zero in LNetEQAlloc
roundup_pow_of_two return when called on a zero argument is
undefined, so don't call it like that.
This fixes a problem introduced by commit 322489d9d551
("staging/lustre: Use roundup_pow_of_two() in LNetEQAlloc()")
since 0 is a valid count parameter for LNetEQAlloc. Also manifesting
itself as an annoying kernel warning:
LNet: 3486:0:(lib-eq.c:85:LNetEQAlloc()) EQ callback is guaranteed to get every event, do you still want to set eqcount 1 for polling event which will have locking overhead? Please contact with developer to confirm
Oleg Drokin [Sat, 6 Feb 2016 07:01:51 +0000 (02:01 -0500)]
staging/lustre/obdclass: export debugfs functionality for GPL only.
Turns out we mistakenly export some pretty-wide-reaching debugfs
functions as EXPORT_SYMBOL instead of EXPORT_SYMBOL_GPL as we should,
so this patch rectifies the situation.
Oleg Drokin [Sat, 6 Feb 2016 07:01:50 +0000 (02:01 -0500)]
staging/lustre/libcfs: Properly handle debugfs read- and write-only files
It turns out that unlike procfs, debugfs does not really enforce
permissions for root (similar to regular filesystems), so we need
to ensure we are not providing ->write() method to read-only files
and ->read() method for write-only files at registration.
This fixes a couple of crashes on unexpected access.
Linus Torvalds [Sun, 7 Feb 2016 23:23:20 +0000 (15:23 -0800)]
Merge tag 'armsoc-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
Pull ARM SoC fixes from Olof Johansson:
"The first real batch of fixes for this release cycle, so there are a
few more than usual.
Most of these are fixes and tweaks to board support (DT bugfixes,
etc). I've also picked up a couple of small cleanups that seemed
innocent enough that there was little reason to wait (const/
__initconst and Kconfig deps).
Quite a bit of the changes on OMAP were due to fixes to no longer
write to rodata from assembly when ARM_KERNMEM_PERMS was enabled, but
there were also other fixes.
Kirkwood had a bunch of gpio fixes for some boards. OMAP had RTC
fixes on OMAP5, and Nomadik had changes to MMC parameters in DT.
All in all, mostly the usual mix of various fixes"
* tag 'armsoc-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (46 commits)
ARM: multi_v7_defconfig: enable DW_WATCHDOG
ARM: nomadik: fix up SD/MMC DT settings
ARM64: tegra: Add chosen node for tegra132 norrin
ARM: realview: use "depends on" instead of "if" after prompt
ARM: tango: use "depends on" instead of "if" after prompt
ARM: tango: use const and __initconst for smp_operations
ARM: realview: use const and __initconst for smp_operations
bus: uniphier-system-bus: revive tristate prompt
arm64: dts: Add missing DMA Abort interrupt to Juno
bus: vexpress-config: Add missing of_node_put
ARM: dts: am57xx: sbc-am57x: correct Eth PHY settings
ARM: dts: am57xx: cl-som-am57x: fix CPSW EMAC pinmux
ARM: dts: am57xx: sbc-am57x: fix UART3 pinmux
ARM: dts: am57xx: cl-som-am57x: update SPI Flash frequency
ARM: dts: am57xx: cl-som-am57x: set HOST mode for USB2
ARM: dts: am57xx: sbc-am57x: fix SB-SOM EEPROM I2C address
ARM: dts: LogicPD Torpedo: Revert Duplicative Entries
ARM: dts: am437x: pixcir_tangoc: use correct flags for irq types
ARM: dts: am4372: fix irq type for arm twd and global timer
ARM: dts: at91: sama5d4 xplained: fix phy0 IRQ type
...
Linus Torvalds [Sun, 7 Feb 2016 06:14:46 +0000 (22:14 -0800)]
Merge tag 'usb-4.5-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb
Pull USB fixes from Greg KH:
"Here are some USB fixes for 4.5-rc3.
The usual, xhci fixes for reported issues, combined with some small
gadget driver fixes, and a MAINTAINERS file update. All have been in
linux-next with no reported issues"
* tag 'usb-4.5-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb:
xhci: harden xhci_find_next_ext_cap against device removal
xhci: Fix list corruption in urb dequeue at host removal
usb: host: xhci-plat: fix NULL pointer in probe for device tree case
usb: xhci-mtk: fix AHB bus hang up caused by roothubs polling
usb: xhci-mtk: fix bpkts value of LS/HS periodic eps not behind TT
usb: xhci: apply XHCI_PME_STUCK_QUIRK to Intel Broxton-M platforms
usb: xhci: set SSIC port unused only if xhci_suspend succeeds
usb: xhci: add a quirk bit for ssic port unused
usb: xhci: handle both SSIC ports in PME stuck quirk
usb: dwc3: gadget: set the OTG flag in dwc3 gadget driver.
Revert "xhci: don't finish a TD if we get a short-transfer event mid TD"
MAINTAINERS: fix my email address
usb: dwc2: Fix probe problem on bcm2835
Revert "usb: dwc2: Move reset into dwc2_get_hwparams()"
usb: musb: ux500: Fix NULL pointer dereference at system PM
usb: phy: mxs: declare variable with initialized value
usb: phy: msm: fix error handling in probe.
Linus Torvalds [Sun, 7 Feb 2016 06:13:16 +0000 (22:13 -0800)]
Merge tag 'staging-4.5-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging
Pull staging and IIO driver fixes from Greg KH:
"Here are some IIO and staging driver fixes for 4.5-rc3.
All of them, except one, are for IIO drivers, and one is for a speakup
driver fix caused by some earlier patches, to resolve a reported build
failure"
* tag 'staging-4.5-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging:
Staging: speakup: Fix allyesconfig build on mn10300
iio: dht11: Use boottime
iio: ade7753: avoid uninitialized data
iio: pressure: mpl115: fix temperature offset sign
iio: imu: Fix dependencies for !HAS_IOMEM archs
staging: iio: Fix dependencies for !HAS_IOMEM archs
iio: adc: Fix dependencies for !HAS_IOMEM archs
iio: inkern: fix a NULL dereference on error
iio:adc:ti_am335x_adc Fix buffered mode by identifying as software buffer.
iio: light: acpi-als: Report data as processed
iio: dac: mcp4725: set iio name property in sysfs
iio: add HAS_IOMEM dependency to VF610_ADC
iio: add IIO_TRIGGER dependency to STK8BA50
iio: proximity: lidar: correct return value
iio-light: Use a signed return type for ltr501_match_samp_freq()
Sudip Mukherjee [Fri, 5 Feb 2016 09:56:54 +0000 (15:26 +0530)]
staging: wilc1000: fix build failure
allmodconfig build of alpha, m68k, m32r, tilepro has failed with the
error:
drivers/staging/wilc1000/wilc_wfi_cfgoperations.c: In function 'wilc_create_wiphy':
drivers/staging/wilc1000/wilc_wfi_cfgoperations.c:2632:13:
error: 'struct wiphy' has no member named 'wowlan'
Looking at other drivers wowlan can be only used when CONFIG_PM is
defined.
Kevin Wern [Sat, 16 Jan 2016 21:44:41 +0000 (13:44 -0800)]
staging/slicoss: Use ethtool_ops instead of module_param.
ethtool_ops has attributes in sub struct ethtool_coalesce that
correspond to the parameters intagg_delay and dynamic_intagg. It is
preferable to set these properties with ethtool rather than
module_param, so create these attributes in adapter and set them using
ethtool_coalesce's rx_coalesce_usecs and rx_use_adaptive_coalesce.
(Outlined in TODO file)
Signed-off-by: Kevin Wern <kevin.m.wern@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Linus Torvalds [Sat, 6 Feb 2016 04:20:07 +0000 (20:20 -0800)]
Merge branch 'akpm' (patches from Andrew)
Merge fixes from Andrew Morton:
"22 fixes"
* emailed patches from Andrew Morton <akpm@linux-foundation.org>: (22 commits)
epoll: restrict EPOLLEXCLUSIVE to POLLIN and POLLOUT
radix-tree: fix oops after radix_tree_iter_retry
MAINTAINERS: trim the file triggers for ABI/API
dax: dirty inode only if required
thp: make deferred_split_scan() work again
mm: replace vma_lock_anon_vma with anon_vma_lock_read/write
ocfs2/dlm: clear refmap bit of recovery lock while doing local recovery cleanup
um: asm/page.h: remove the pte_high member from struct pte_t
mm, hugetlb: don't require CMA for runtime gigantic pages
mm/hugetlb: fix gigantic page initialization/allocation
mm: downgrade VM_BUG in isolate_lru_page() to warning
mempolicy: do not try to queue pages from !vma_migratable()
mm, vmstat: fix wrong WQ sleep when memory reclaim doesn't make any progress
vmstat: make vmstat_update deferrable
mm, vmstat: make quiet_vmstat lighter
mm/Kconfig: correct description of DEFERRED_STRUCT_PAGE_INIT
memblock: don't mark memblock_phys_mem_size() as __init
dump_stack: avoid potential deadlocks
mm: validate_mm browse_rb SMP race condition
m32r: fix build failure due to SMP and MMU
...
Linus Torvalds [Sat, 6 Feb 2016 03:52:57 +0000 (19:52 -0800)]
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph-client
Pull Ceph fixes from Sage Weil:
"We have a few wire protocol compatibility fixes, ports of a few recent
CRUSH mapping changes, and a couple error path fixes"
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph-client:
libceph: MOSDOpReply v7 encoding
libceph: advertise support for TUNABLES5
crush: decode and initialize chooseleaf_stable
crush: add chooseleaf_stable tunable
crush: ensure take bucket value is valid
crush: ensure bucket id is valid before indexing buckets array
ceph: fix snap context leak in error path
ceph: checking for IS_ERR instead of NULL
Linus Torvalds [Sat, 6 Feb 2016 03:38:15 +0000 (19:38 -0800)]
Merge branch 'drm-fixes' of git://people.freedesktop.org/~airlied/linux
Pull drm fixes from Dave Airlie:
"Fixes all over the place:
- amdkfd: two static checker fixes
- mst: a bunch of static checker and spec/hw interaction fixes
- amdgpu: fix Iceland hw properly, and some fiji bugs, along with
some write-combining fixes.
- exynos: some regression fixes
- adv7511: fix some EDID reading issues"
* 'drm-fixes' of git://people.freedesktop.org/~airlied/linux: (38 commits)
drm/dp/mst: deallocate payload on port destruction
drm/dp/mst: Reverse order of MST enable and clearing VC payload table.
drm/dp/mst: move GUID storage from mgr, port to only mst branch
drm/dp/mst: change MST detection scheme
drm/dp/mst: Calculate MST PBN with 31.32 fixed point
drm: Add drm_fixp_from_fraction and drm_fixp2int_ceil
drm/mst: Add range check for max_payloads during init
drm/mst: Don't ignore the MST PBN self-test result
drm: fix missing reference counting decrease
drm/amdgpu: disable uvd and vce clockgating on Fiji
drm/amdgpu: remove exp hardware support from iceland
drm/amdgpu: load MEC ucode manually on iceland
drm/amdgpu: don't load MEC2 on topaz
drm/amdgpu: drop topaz support from gmc8 module
drm/amdgpu: pull topaz gmc bits into gmc_v7
drm/amdgpu: The VI specific EXE bit should only apply to GMC v8.0 above
drm/amdgpu: iceland use CI based MC IP
drm/amdgpu: move gmc7 support out of CIK dependency
drm/amdgpu/gfx7: enable cp inst/reg error interrupts
drm/amdgpu/gfx8: enable cp inst/reg error interrupts
...
Linus Torvalds [Sat, 6 Feb 2016 02:11:23 +0000 (18:11 -0800)]
Merge tag 'pm+acpi-4.5-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull power management and ACPI fixes from Rafael Wysocki:
"These are: a fix for a recently introduced false-positive warnings
about PM domain pointers being changed inappropriately (harmless but
annoying), an MCH size workaround quirk for one more platform, a
compiler warning fix (generic power domains framework), an ACPI LPSS
(Intel SoCs) driver fixup and a cleanup of the ACPI CPPC core code.
Specifics:
- PM core fix to avoid false-positive warnings generated when the
pm_domain field is cleared for a device that appears to be bound to
a driver (Rafael Wysocki).
- New MCH size workaround quirk for Intel Haswell-ULT (Josh Boyer).
- Fix for an "unused function" compiler warning in the generic power
domains framework (Ulf Hansson).
- Fixup for the ACPI driver for Intel SoCs (acpi-lpss) to set the PM
domain pointer of a device properly in one place that was
overlooked by a recent PM core update (Andy Shevchenko).
- Removal of a redundant function declaration in the ACPI CPPC core
code (Timur Tabi)"
* tag 'pm+acpi-4.5-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
PM: Avoid false-positive warnings in dev_pm_domain_set()
PM / Domains: Silence compiler warning for an unused function
ACPI / CPPC: remove redundant mbox_send_message() declaration
ACPI / LPSS: set PM domain via helper setter
PNP: Add Haswell-ULT to Intel MCH size workaround
Jason Baron [Fri, 5 Feb 2016 23:37:04 +0000 (15:37 -0800)]
epoll: restrict EPOLLEXCLUSIVE to POLLIN and POLLOUT
In the current implementation of the EPOLLEXCLUSIVE flag (added for
4.5-rc1), if epoll waiters create different POLL* sets and register them
as exclusive against the same target fd, the current implementation will
stop waking any further waiters once it finds the first idle waiter.
This means that waiters could miss wakeups in certain cases.
For example, when we wake up a pipe for reading we do:
wake_up_interruptible_sync_poll(&pipe->wait, POLLIN | POLLRDNORM); So if
one epoll set or epfd is added to pipe p with POLLIN and a second set
epfd2 is added to pipe p with POLLRDNORM, only epfd may receive the
wakeup since the current implementation will stop after it finds any
intersection of events with a waiter that is blocked in epoll_wait().
We could potentially address this by requiring all epoll waiters that
are added to p be required to pass the same set of POLL* events. IE the
first EPOLL_CTL_ADD that passes EPOLLEXCLUSIVE establishes the set POLL*
flags to be used by any other epfds that are added as EPOLLEXCLUSIVE.
However, I think it might be somewhat confusing interface as we would
have to reference count the number of users for that set, and so
userspace would have to keep track of that count, or we would need a
more involved interface. It also adds some shared state that we'd have
store somewhere. I don't think anybody will want to bloat
__wait_queue_head for this.
I think what we could do instead, is to simply restrict EPOLLEXCLUSIVE
such that it can only be specified with EPOLLIN and/or EPOLLOUT. So
that way if the wakeup includes 'POLLIN' and not 'POLLOUT', we can stop
once we hit the first idle waiter that specifies the EPOLLIN bit, since
any remaining waiters that only have 'POLLOUT' set wouldn't need to be
woken. Likewise, we can do the same thing if 'POLLOUT' is in the wakeup
bit set and not 'POLLIN'. If both 'POLLOUT' and 'POLLIN' are set in the
wake bit set (there is at least one example of this I saw in fs/pipe.c),
then we just wake the entire exclusive list. Having both 'POLLOUT' and
'POLLIN' both set should not be on any performance critical path, so I
think that's ok (in fs/pipe.c its in pipe_release()). We also continue
to include EPOLLERR and EPOLLHUP by default in any exclusive set. Thus,
the user can specify EPOLLERR and/or EPOLLHUP but is not required to do
so.
Since epoll waiters may be interested in other events as well besides
EPOLLIN, EPOLLOUT, EPOLLERR and EPOLLHUP, these can still be added by
doing a 'dup' call on the target fd and adding that as one normally
would with EPOLL_CTL_ADD. Since I think that the POLLIN and POLLOUT
events are what we are interest in balancing, I think that the 'dup'
thing could perhaps be added to only one of the waiter threads.
However, I think that EPOLLIN, EPOLLOUT, EPOLLERR and EPOLLHUP should be
sufficient for the majority of use-cases.
Since EPOLLEXCLUSIVE is intended to be used with a target fd shared
among multiple epfds, where between 1 and n of the epfds may receive an
event, it does not satisfy the semantics of EPOLLONESHOT where only 1
epfd would get an event. Thus, it is not allowed to be specified in
conjunction with EPOLLEXCLUSIVE.
EPOLL_CTL_MOD is also not allowed if the fd was previously added as
EPOLLEXCLUSIVE. It seems with the limited number of flags to not be as
interesting, but this could be relaxed at some further point.
Signed-off-by: Jason Baron <jbaron@akamai.com> Tested-by: Madars Vitolins <m@silodev.com> Cc: Michael Kerrisk <mtk.manpages@gmail.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Al Viro <viro@ftp.linux.org.uk> Cc: Eric Wong <normalperson@yhbt.net> Cc: Jonathan Corbet <corbet@lwn.net> Cc: Andy Lutomirski <luto@amacapital.net> Cc: Hagen Paul Pfeifer <hagen@jauu.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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