In the 64-bit kernel we use swapper_pg_dir for three different things.
1) xuseg mappings for kernel threads.
2) vmap mappings for all kernel-space accesses in xkseg.
3) vmap mappings for kernel modules in ksseg (kseg2).
Due to how the TLB refill handlers work, any mapping established in
xkseg or ksseg will also establish a xuseg mapping that should never
be used by the kernel.
In order to be able to use exceptions to trap NULL pointer
dereferences, we need to ensure that nothing is mapped at address
zero. Since vmap mappings in xkseg are reflected in xuseg, this means
we need to ensure that there are no vmap mappings established at the
start of xkseg. So we move back VMALLOC_START to avoid establishing
vmap mappings at the start of xkseg.
Signed-off-by: David Daney <ddaney@caviumnetworks.com>
To: linux-mips@linux-mips.org
Patchwork: http://patchwork.linux-mips.org/patch/1129/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
commit 5a0e3ad6af
Author: Tejun Heo <tj@kernel.org>
Date: Wed Mar 24 17:04:11 2010 +0900
include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h
Since a while the few headers included don't drag in <linux/kernel.h>
anymore, thus no more prototype of printk() resulting in:
CC arch/mips/nxp/pnx8550/common/reset.o
/home/ralf/src/linux/upstream-linus/arch/mips/nxp/pnx8550/common/reset.c: In function 'pnx8550_machine_restart':
/home/ralf/src/linux/upstream-linus/arch/mips/nxp/pnx8550/common/reset.c:31: error: implicit declaration of function 'printk'
/home/ralf/src/linux/upstream-linus/arch/mips/nxp/pnx8550/common/reset.c:33: error: 'NULL' undeclared (first use in this function)
/home/ralf/src/linux/upstream-linus/arch/mips/nxp/pnx8550/common/reset.c:33: error: (Each undeclared identifier is reported only once
/home/ralf/src/linux/upstream-linus/arch/mips/nxp/pnx8550/common/reset.c:33: error: for each function it appears in.)
make[3]: *** [arch/mips/nxp/pnx8550/common/reset.o] Error 1
Fixed by including <linux/kernel.h>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Smatch complains because "lkb" is never NULL. Looking at it, the original
code actually adds the new element to the end of the list fine, so we can
just get rid of the if condition. This code is four years old and no one
has complained so it must work.
Signed-off-by: Dan Carpenter <error27@gmail.com>
Signed-off-by: David Teigland <teigland@redhat.com>
Commit 6f461f6c7c
("e1000e: enable/disable ASPM L0s and L1 and ERT according to hardware errata")
oopses on one of my ppc64 boxes with a NULL pointer (0x4a):
Unable to handle kernel paging request for data at address 0x0000004a
Faulting instruction address: 0xc0000000004d2f1c
cpu 0xe: Vector: 300 (Data Access) at [c000000bec1833a0]
pc: c0000000004d2f1c: .e1000e_disable_aspm+0xe0/0x150
lr: c0000000004d2f0c: .e1000e_disable_aspm+0xd0/0x150
dar: 4a
[c000000bec1836d0] c00000000069b9d8 .e1000_probe+0x84/0xe8c
[c000000bec1837b0] c000000000386d90 .local_pci_probe+0x4c/0x68
[c000000bec183840] c0000000003872ac .pci_device_probe+0xfc/0x148
[c000000bec183900] c000000000409e8c .driver_probe_device+0xe4/0x1d0
[c000000bec1839a0] c00000000040a024 .__driver_attach+0xac/0xf4
[c000000bec183a40] c000000000409124 .bus_for_each_dev+0x9c/0x10c
[c000000bec183b00] c000000000409c1c .driver_attach+0x40/0x60
[c000000bec183b90] c0000000004085dc .bus_add_driver+0x150/0x328
[c000000bec183c40] c00000000040a58c .driver_register+0x100/0x1c4
[c000000bec183cf0] c00000000038764c .__pci_register_driver+0x78/0x128
Seems like pdev->bus->self == NULL. I haven't touched pci in a long time
so I'm trying to remember what this means (no pcie bridge perhaps?)
The patch below fixes the oops for me.
Signed-off-by: Anton Blanchard <anton@samba.org>
Reviewed-by: Bruce Allan <bruce.w.allan@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
My previous patch "mac80211: notify driver about
IBSS status" left a problem -- when we merge with
a new BSSID, we never tell the driver that we left
the old one. Fix that.
Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
When reporting Tx status, indicate that only one rate was used.
Otherwise, the rate is frozen at rate index 0 (i.e. 1Mb/s).
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Cc: stable@kernel.org
-f, -c 1, -R are now useless for trace events recording, moreover
-M is useless and event hurts.
Remove them from the documentation examples and from record scripts.
Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Tom Zanussi <tzanussi@gmail.com>
Various SCSI trace enhancements:
- Display data and protection information scatterlist lengths in the
trace output
- Add support for VERIFY and WRITE SAME commands and decode the UNMAP
bit if applicable
- Add decoding of the PROTECT field for READ/VERIFY/WRITE/WRITE SAME
commands as well as the EXPECTED INITIAL REFERENCE TAG field for
their 32-byte variants
- Decode READ CAPACITY(16), GET LBA STATUS, and UNMAP
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
Add a few clarifying comments in the B0 page function and allow the
optimal transfer length field to be specified on the command line using
opt_blks=N.
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
* git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging-2.6:
Staging: vme: Re-introduce necessary brackets
Staging: iio: fix up the iio_get_new_idr_val comment
Staging: add Add Sitecom WL-349 to rtl8192su
Staging: rt2860: add Belkin F5D8055 Wireless-N USB Dongle device id
staging: rtl8192su: add Support for Belkin F5D8053 v6
Staging: dt3155: fix 50Hz configuration
staging: usbip: Fix deadlock
Staging: rtl8192su: add USB ID for 0bda:8171
Staging: hv: name network device ethX rather than sethX
Staging: hv: Fix up memory leak on HvCleanup
Staging: hv: Fix a bug affecting IPv6
staging: iio: ring_sw: Fix incorrect test on successful read of last value, causes infinite loop
staging: iio: Function iio_get_new_idr_val() return negative value if fails.
Staging: iio: adc: fix dangling pointers
Staging: iio: light: fix dangling pointers
Staging: iio: test for failed allocation
staging: iio: lis3l02dq - incorrect ws used in container of call.
* git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb-2.6: (29 commits)
USB: sl811-hcd: Fix device disconnect
USB: ohci-at91: fix power management hanging
USB: rename usb_buffer_alloc() and usb_buffer_free()
USB: ti_usb: fix printk format warning
USB: gadget: s3c-hsotg: Add missing unlock
USB: fix build on OMAPs if CONFIG_PM_RUNTIME is not set
USB: oxu210hp: release spinlock on error path
USB: serial: option: add cinterion device id
USB: serial: option: ZTEAC8710 Support with Device ID 0xffff
USB: serial: pl2303: Hybrid reader Uniform HCR331
USB: option: add ID for ZTE MF 330
USB: xhci: properly set endpoint context fields for periodic eps.
USB: xhci: properly set the "Mult" field of the endpoint context.
USB: OHCI: don't look at the root hub to get the number of ports
USB: don't choose configs with no interfaces
USB: cdc-acm: add another device quirk
USB: fix testing the wrong variable in fs_create_by_name()
usb: Fix tusb6010 for DMA API
musb_core: fix musb_init_controller() error cleanup path
MUSB: fix DaVinci glue layer dependency
...
Simplify debug_atomic_inc/dec by using this_cpu_inc/dec() instead
of doing it through an indirect get_cpu_var() and a manual
incrementation.
Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Peter Zijlstra <peterz@infradead.org>
When a path restore the flags while irqs are already enabled, we
update the per cpu var redundant_hardirqs_on in a racy fashion
and debug_atomic_inc() warns about this situation.
In this particular case, loosing a few hits in a stat is not a big
deal, so increment it without protection.
v2: Don't bother with disabling irq, we can miss one count in
rare situations
Reported-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: David Miller <davem@davemloft.net>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
CONFIG_INOTIFY_USER defined but CONFIG_ANON_INODES undefined will result
in the following build failure:
LD vmlinux
fs/built-in.o: In function 'sys_inotify_init1':
(.text.sys_inotify_init1+0x22c): undefined reference to 'anon_inode_getfd'
fs/built-in.o: In function `sys_inotify_init1':
(.text.sys_inotify_init1+0x22c): relocation truncated to fit: R_MIPS_26 against 'anon_inode_getfd'
make[2]: *** [vmlinux] Error 1
make[1]: *** [sub-make] Error 2
make: *** [all] Error 2
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* 'merge' of git://git.secretlab.ca/git/linux-2.6:
spi: spidev_test gives error upon 1-byte transfer
omap2_mcspi: small fixes of output data format
omap2_mcspi: Flush posted writes
spi: spi_device memory should be released instead of device.
spi: release device claimed by bus_find_device_by_name
of: check for IS_ERR()
serial/mpc52xx_uart: Drop outdated comments
gpio: potential null dereference
Somehow I managed to remove a set of rather necessary brackets in commit
29848ac9f3. Put them back.
Signed-off-by: Martyn Welch <martyn.welch@ge.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Add Belkin F5D8055 Wireless-N USB support to the rt2870
staging driver.
Signed-off-by: Chris Largret <largret@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Please find attached a patch which adds the device ID for the Belkin
F5D8053 v6 to the rtl8192su driver. I've tested this in 2.6.34-rc3
(Ubuntu 9.10 amd64) and the network adapter is working flawlessly.
Signed-off-by: Richard Airlie <richard@backtrace.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
According to the header file, dt3155_io.h, the 50/60 Hz configuration
is controlled by a bit in the I2C CSR2 register (bit 2). The function
dt3155_init_isr actually reads the I2C CONFIG register into the global
I2C_CSR union variable then modifies the bit. It then does a write
to the I2C CONFIG register with the global I2C_CONFIG union variable
which is not even set with a value anywhere in the driver.
My guess is 50Hz operation doesn't even work as-is.
Fix this by actually reading and writing the correct register with
the correct value.
Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Cc: Simon Horman <horms@verge.net.au>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
When detaching a port from the client side (usbip --detach 0),
the event thread, on the server side, is going to deadlock.
The "eh" server thread is getting USBIP_EH_RESET event and calls:
-> stub_device_reset() -> usb_reset_device()
the USB framework is then calling back _in the same "eh" thread_ :
-> stub_disconnect() -> usbip_stop_eh() -> wait_for_completion()
the "eh" thread is being asleep forever, waiting for its own completion.
This patch checks if "eh" is the current thread, in usbip_stop_eh().
Signed-off-by: Eric Lescouet <eric@lescouet.org>
Cc: stable <stable@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This patch makes the HyperV network device use the same naming scheme as
other virtual drivers (Xen, KVM). In an ideal world, userspace tools
would not care what the name is, but some users and applications do
care. Vyatta CLI is one of the tools that does depend on what the name
is.
Signed-off-by: Stephen Hemminger <shemminger@vyatta.com>
Cc: Hank Janssen <hjanssen@microsoft.com>
Cc: stable <stable@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This is a bad one. The test means that almost no reads of the last
value ever succeed! Result is an infinite loop.
Another one for the 'oops' category.
Signed-off-by: Jonathan Cameron <jic23@cam.ac.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Function iio_get_new_idr_val() return negative value if fails.
So, only error when ret < 0 in iio_device_register_eventset().
Signed-off-by: Sonic Zhang <sonic.adi@gmail.com>
Acked-by: Jonathan Cameron <jic23@cam.ac.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Fix I2C-drivers which missed setting clientdata to NULL before freeing the
structure it points to. Also fix drivers which do this _after_ the structure
was freed already.
Signed-off-by: Wolfram Sang <w.sang@pengutronix.de>
Acked-by: Jonathan Cameron <jic23@cam.ac.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Fix I2C-drivers which missed setting clientdata to NULL before freeing the
structure it points to. Also fix drivers which do this _after_ the structure
was freed already.
Signed-off-by: Wolfram Sang <w.sang@pengutronix.de>
Acked-by: Jonathan Cameron <jic23@cam.ac.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
We should return test to see if iio_allocate_trigger() fails and return -ENOMEM.
Signed-off-by: Dan Carpenter <error27@gmail.com>
Acked-by: Jonathan Cameron <jic23@cam.ac.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
The word oops comes to mind. Original patch to merge the two work queues
in here (prior to Greg taking them into staging) changed the top half to
only use one of them and the bottom half to assume it was the other.
Currently causes a NULL pointer dereference if you enable any of the events
on an lis3l02dq. Just goes to show I need a few more regression tests.
Signed-of-by: Jonathan Cameron <jic23@cam.ac.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
A while ago I provided a patch that fixed device detection after device
removal (USB: sl811-hcd: Fix device disconnect).
Chris Brissette pointed out that the detection/removal counter method
to distinguish insert or remove my fail under certain conditions.
Latest SL811HS datasheet (Document 38-08008 Rev. *D) indicates that
bit 6 (SL11H_INTMASK_RD) of the Interrupt Status Register together with
bit 5 (SL11H_INTMASK_INSRMV) can be used to determine whether a device
has been inserted or removed.
Signed-off-by: Michael Hennerich <michael.hennerich@analog.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
A hanging has been detected in ohci-at91 while going in suspend to ram. This is
due to asynchronous operations between ohci reset and ohci clocks shutdown.
This patch adds the reading of the control register between the reset of the
ohci and clocks stop. This "flush the writes" idea was taken from ohci-hcd.c
file (ohci_shutdown() function).
Signed-off-by: Patrice Vilchez <patrice.vilchez@atmel.com>
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
For more clearance what the functions actually do,
usb_buffer_alloc() is renamed to usb_alloc_coherent()
usb_buffer_free() is renamed to usb_free_coherent()
They should only be used in code which really needs DMA coherency.
[added compatibility macros so we can convert things easier - gregkh]
Signed-off-by: Daniel Mack <daniel@caiaq.de>
Cc: Alan Stern <stern@rowland.harvard.edu>
Cc: Pedro Ribeiro <pedrib@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Fix printk format warning in usbserial/ti_usb:
drivers/usb/serial/ti_usb_3410_5052.c:1738: warning: format '%d' expects type 'int', but argument 5 has type 'size_t'
Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
In an error handling case the lock is not unlocked. The return is
converted to a goto, to share the unlock at the end of the function.
A simplified version of the semantic patch that finds this problem is as
follows: (http://coccinelle.lip6.fr/)
// <smpl>
@r exists@
expression E1;
identifier f;
@@
f (...) { <+...
* spin_lock_irqsave (E1,...);
... when != E1
* return ...;
...+> }
// </smpl>
Signed-off-by: Julia Lawall <julia@diku.dk>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
With patch as1329 (USB: convert to the runtime PM framework),
we make USB_SUSPEND depend on PM_RUNTIME instead of CONFIG_PM.
Also, CONFIG_USB_OTG selects CONFIG_USB_SUSPEND.
If PM_RUNTIME is not enabled, and we try to enable USB_OTG,
we will end up with CONFIG_USB_SUSPEND selected. This is
due to a known bug with the select statement.
This makes the build break on various OMAP configs (which
have CONFIG_USB_OTG set by default, but do not yet have
CONFIG_PM_RUNTIME enabled).
Avoid this by changing the logic for CONFIG_USB_OTG from
"select USB_SUSPEND" to "depends on USB_SUSPEND"
Signed-off-by: Anand Gadiyar <gadiyar@ti.com>
CC: Michal Marek <mmarek@suse.cz>
CC: Tony Lindgren <tony@atomide.com>
CC: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
PATCH TO EXTEND SUPPORT TO AC8710 WITH 0xFFFF Product ID.
Signed-off-by: Mahesh Kuruganti <maheshkuruganti@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
