07 Feb, 2008
40 commits
-
Provide support to add an optional user defined callback to be run at
function entry of a kretprobe'd function. Also modify the kprobe smoke
tests to include an entry-handler during the kretprobe sanity test.Signed-off-by: Abhishek Sagar
Cc: Prasanna S Panchamukhi
Cc: Ananth N Mavinakayanahalli
Cc: Anil S Keshavamurthy
Acked-by: Jim Keniston
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Remove some more references to dev->power.power_state. That field is overdue
for removal, but we can't do that while it's still referenced in the kernel.
The only reason to update it was to make the /sys/devices/.../power/state
files (now removed) work better.Signed-off-by: David Brownell
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Use simpler comment headers, and strip out information that is maintained in
GIT historySigned-off-by: Mike Frysinger
Signed-off-by: Bryan Wu
Signed-off-by: David Brownell
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
SPI writes should also not return until the last bit is sent.
Signed-off-by: Sonic Zhang
Signed-off-by: Bryan Wu
Signed-off-by: David Brownell
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Full duplex SPI operation should not read a dummy byte at the first transfer.
Bug and fix by Jean-Christian de Rivaz :http://blackfin.uclinux.org/gf/project/uclinux-dist/tracker/?action=TrackerItemEdit&tracker_item_id=3678
Signed-off-by: Jean-Christian de Rivaz
Signed-off-by: Bryan Wu
Signed-off-by: David Brownell
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
PBX 2 SPI devices need the nonstandard "cs change per word" mechanism.
This patch is one of three updating this driver to make the last data bits get
sent before advancing the transfer ... in this case, before the chipselect
gets deactivated.Signed-off-by: Bryan Wu
Signed-off-by: David Brownell
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Use the SPI driver's name when requesting gpio lines. When there are gpio
conflicts, this helps to narrow down the problems; "bfin-spi" is not
informative.Signed-off-by: Bryan Wu
Signed-off-by: David Brownell
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Remove useless return status check in restore_state function. Issue was
pointed out by Michael.Cc: Michael Hennerich
Signed-off-by: Bryan Wu
Signed-off-by: David Brownell
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
This adds driver OMAP SPI specific changes to support OMAP 3430
Signed-off-by: Girish S G
Signed-off-by: David Brownell
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Add support for SPI over SCI pins. SCI is a very simple serial controller
block that can be found on older SuperH processors. In theory it is
possible to use the SCI hardware block in syncronous mode, but this version
of the driver simply hooks up the bit banging code on the SCI pins.Signed-off-by: Magnus Damm
Signed-off-by: David Brownell
Cc: Paul Mundt
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
The two S3C SPI master drivers got merged without much review, so I just
noticed that they're doing something that the SPI core code is responsible
for, rather than any adapter driver: they try to register SPI devices.This removes that support from those drivers so they act normally.
Interestingly, none of the current boards are affected. So it's a net code
shrink with no loss of functionality.Signed-off-by: David Brownell
Cc: Ben Dooks
Cc: Russell King
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
In atmel_spi_next_xfer, xfer can be NULL because the next transfer may
already have been submitted to the PDC (using DMA chaining). This can
cause an oops, since the debug message assumed it was never null. The
fix changes how those debug messages are issued, ensuring that one is
issued each time a transfer is started instead of once per call.Also, properly indent the "can this transfer be chained" test so it's
not hidden as if it were non-conditional code.Signed-off-by: Haavard Skinnemoen
Signed-off-by: David Brownell
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Add support for chained transfers in the atmel_spi driver, letting the DMA
controller switch to the next buffer pair without CPU intervention. This
reduced I/O latencies by about 2% in one bulk I/O test. It should also help
work around several interrelated errata affecting chipselect 0 on at91rm9200
chips.Almost all of the changes are in the reworked atmel_spi_next_xfer() function.
That's now called with the driver in one of three states:1. It isn't transferring anything (in which case the first transfer
of the current message is going to be sent)
2. It has finished transfering a non-chainable transfer (in which
case it will go to the next transfer in the message)
3. It has finished transfering a chained transfer (in which case the
next transfer is already queued)After that it will queue the next transfer if it can be chained.
Signed-off-by: Szilveszter Ordog
Acked-by: Haavard Skinnemoen
Signed-off-by: David Brownell
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Don't insert (undesirable) delays between consecutive words (DLYBCT) or when
activating chipselects (DLYBS).Removing the between-word delays improves the performance of bulk transfers
(such as mtd_dataflash, m25p80, mmc_spi) significantly. In one test, the
improvement was a factor of more than eight!(The large DLYBCT value came from the legacy at91 SPI driver, and it's not
clear why it used such a huge value.)Signed-off-by: Haavard Skinnemoen
Signed-off-by: David Brownell
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Don't update dev->power.power_state any more in the SPI core. The only
reason to update this scheduled-to-be-removed field was to make the
already-removed /sys/devices/.../power/state files work better.Signed-off-by: David Brownell
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Commit edfaa7c36574f1bf09c65ad602412db9da5f96bf
Driver core: convert block from raw kobjects to core devices
This moves the block devices to /sys/class/block. It will create a
flat list of all block devices, with the disks and partitions in one
directory. For compatibility /sys/block is created and contains symlinks
to the disks.introduced a global disk_type variable in , causing the
following compile error on Atari:drivers/block/ataflop.c:93: error: conflicting types for 'disk_type'
include/linux/genhd.h:21: error: previous declaration of 'disk_type' was hereRename the local disk_type variable in drivers/block/ataflop.c to
atari_disk_type, to avoid the conflict.Signed-off-by: Geert Uytterhoeven
Cc: Kay Sievers
Acked-by: Greg Kroah-Hartman
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Standardize the temperature units to millidegrees C for the two sensor
conversion routines. Previously the routines were,w1_DS18B20_convert_temp degrees C
w1_DS18S20_convert_temp millidegrees CUnfortunately this will break any program using the ds18b20 value as it
will now be 1000 times bigger. Fortunately there can't be that many users
out there, or some of these bugs will have been fixed by now, such as the
negative C error (see previous patch) that makes me think the ds18b20 is
the better choice to change because of the current bugs.Signed-off-by: David Fries
Cc: Evgeniy Polyakov
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Simplify logic in cdrom_release() without semantic change.
Signed-off-by: Borislav Petkov
Cc: Jens Axboe
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Remvoe variable which actually is not used (except assigning it a value)
and confusing break out of the family checking loop. Found by Harry Mason.Signed-off-by: Evgeniy Polyakov
Cc: Harry J Mason
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Fix section mismatch by making the driver template variable name
match one of the whitelisted variable names in modpost.WARNING: vmlinux.o(.data+0x7a9e8): Section mismatch: reference to .init.text:tpm_inf_pnp_probe (between 'tpm_inf_pnp' and 'cn_idx')
Signed-off-by: Randy Dunlap
Cc: Marcel Selhorst
Acked-by: Sam Ravnborg
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Avoid calling do_div(x, 1) in this case.
Cc: David Fries
Cc: "H. Peter Anvin"
Cc: Ingo Molnar
Cc: Thomas Gleixner
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
The kernel has a divide by zero crash when trying to run the system timer
less than 100Hz. The problem is x/(HZ/USER_HZ) and related. Now
x*(USER_HZ/HZ) will be used if HZ
Cc: "H. Peter Anvin"
Cc: Ingo Molnar
Cc: Thomas Gleixner
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Specify also sub pci ids to not grab devices with properly set sub ids.
This devices has these set (unset) to the same as (plx 9050) ids.Signed-off-by: Jiri Slaby
Cc: Andreas Block
Cc: Oliver Thimm
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
I have been prime author and maintainer of block2mtd from day one, but
neither MAINTAINERS nor the module source makes this fact clear. And while
I'm at it, update my email addresses tree-wide, as the old address
currently bounces and change my name to "joern" as unicode will likely
continue to cause trouble until the end of this century.Signed-off-by: Joern Engel
Cc: David Woodhouse
Cc: Andy Whitcroft
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Here's a couple of small additions to BUG-HUNTING.
1. point out that you can list code in gdb with only one command
(gdb) l *( + offset)2. give a very brief hint how to decode module symbols in call traces
Signed-off-by: Richard Kennedy
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
schedule_timeout(jiffies) waits for at least jiffies - 1. Add 1 jiffie to
the timeout_jiffies calculated in sys_poll() to wait at least
timeout_msecs, like poll() manpage says.Signed-off-by: Karsten Wiese
Cc: Ingo Molnar
Cc: Thomas Gleixner
Cc: "H. Peter Anvin"
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Fix two N_TTY line discipline issues related to resuming a stopped TTY
(typically done with ctrl-S):1) Fix handling of character that resumes a stopped TTY (with IXANY)
With "stty ixany", the TTY line discipline would lose the first character
after the stop, so typing, for example, "hi^Sthere" resulted in "hihere"
(the 't' would cause the resume after ^S, but it would then be thrown away
rather than processed as an input character). This was inconsistent with
the behavior of other Unix systems.2) Fix interrupt signal (e.g. ctrl-C) behavior in stopped TTYs
With "stty -ixany" (often the default), interrupt signals were ignored
in a stopped TTY until the TTY was resumed with the start char (typically
ctrl-Q), which was inconsistent with the behavior of other Unix systems.Signed-off-by: Joe Peterson
Cc: Alan Cox
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Just converting this documentation semaphore reference, since we don't
want to promote semaphore usage.Signed-off-by: Daniel Walker
Acked-by: Corey Minyard
Cc: Greg KH
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
We can use ilog2() in fs/namespace.c to compute hash_bits and hash_mask at
compile time, not runtime.[akpm@linux-foundation.org: clean it all up]
Signed-off-by: Eric Dumazet
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
- Account for debug_smp_processor_id()'s own preempt_disable() when
displaying the preempt_count().- 80 cols, not 800.
Cc: Ingo Molnar
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
groups_sort() can be quite long if user loads a large gid table.
This is because GROUP_AT(group_info, some_integer) uses an integer divide.
So having to do XXX thousand divides during one syscall can lead to very
high latencies. (NGROUPS_MAX=65536)In the past (25 Mar 2006), an analog problem was found in groups_search()
(commit d74beb9f33a5f16d2965f11b275e401f225c949d ) and at that time I
changed some variables to unsigned int.I believe that a more generic fix is to make sure NGROUPS_PER_BLOCK is
unsigned.Signed-off-by: Eric Dumazet
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Fix the following section mismatch with CONFIG_HOTPLUG=n,
CONFIG_HOTPLUG_CPU=y:WARNING: vmlinux.o(.text+0x399a6): Section mismatch: reference to .init.text.5:idle_regs (between 'fork_idle' and 'get_task_mm')
Signed-off-by: Adrian Bunk
Cc: Ingo Molnar
Cc: Thomas Gleixner
Cc: "Luck, Tony"
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
calibrate_delay() must be __cpuinit, not __{dev,}init.
I've verified that this is correct for all users.
While doing the latter, I also did the following cleanups:
- remove pointless additional prototypes in C files
- ensure all users #includeThis fixes the following section mismatches with CONFIG_HOTPLUG=n,
CONFIG_HOTPLUG_CPU=y:WARNING: vmlinux.o(.text+0x1128d): Section mismatch: reference to .init.text.1:calibrate_delay (between 'check_cx686_slop' and 'set_cx86_reorder')
WARNING: vmlinux.o(.text+0x25102): Section mismatch: reference to .init.text.1:calibrate_delay (between 'smp_callin' and 'cpu_coregroup_map')Signed-off-by: Adrian Bunk
Cc: Ivan Kokshaysky
Cc: Richard Henderson
Cc: "Luck, Tony"
Cc: Ralf Baechle
Cc: Paul Mackerras
Cc: Benjamin Herrenschmidt
Cc: "David S. Miller"
Cc: Thomas Gleixner
Cc: Ingo Molnar
Cc: Christian Zankel
Cc: Heiko Carstens
Cc: Martin Schwidefsky
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Fixing:
CHECK kernel/params.c
kernel/params.c:329:41: warning: incorrect type in argument 8 (different signedness)
kernel/params.c:329:41: expected int *num
kernel/params.c:329:41: got unsigned int *Signed-off-by: Richard Knutsson
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Actual code let compiler generates idiv instruction on x86.
Using a right shift is OK here and readable as well.
Before patch
10: 57 push %edi
11: 56 push %esi
12: 89 d6 mov %edx,%esi
14: 53 push %ebx
15: 89 c3 mov %eax,%ebx
17: eb 22 jmp 3b
19: 89 f0 mov %esi,%eax
1b: ba 02 00 00 00 mov $0x2,%edx
20: 29 d8 sub %ebx,%eax
22: 89 d7 mov %edx,%edi
24: c1 f8 03 sar $0x3,%eax
27: 99 cltd
28: f7 ff idiv %edi
2a: 8d 04 c3 lea (%ebx,%eax,8),%eax
2d: 39 08 cmp %ecx,(%eax)
...After patch
00000010 :
10: 53 push %ebx
11: 89 c3 mov %eax,%ebx
13: eb 18 jmp 2d
15: 89 d0 mov %edx,%eax
17: 29 d8 sub %ebx,%eax
19: c1 f8 04 sar $0x4,%eax
1c: 8d 04 c3 lea (%ebx,%eax,8),%eax
1f: 39 08 cmp %ecx,(%eax)
...Signed-off-by: Eric Dumazet
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Add detection for IT87XX SuperIO chip and disabling its POST feature, which
made noise on parallel port's pins.Signed-off-by: Petr Cvek
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Add the Dell UK 6400 Inspiron model (MM061) to allow the i8k module to load
correctly without using 'force=1'Signed-off-by: "Nick Warne"
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Use DEFAULT_SGI_PARTITION for SGI_PARTION default
Signed-off-by: Thomas Bogendoerfer
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Fix wrong netmos 9855 serial port configuration.
On loading only one serial port was present and it wasn't working. After
looking in the data sheet I realized that the base address was wrong. For
further reference here is lspci and relevant dmesg output:02:00.0 Communication controller: NetMos Technology PCI 9855 Multi-I/O
Controller (rev 01) (prog-if 02)
Subsystem: LSI Logic / Symbios Logic Unknown device 0022
Flags: medium devsel, IRQ 19
I/O ports at df00 [size=8]
I/O ports at de00 [size=8]
I/O ports at dd00 [size=8]
I/O ports at dc00 [size=8]
I/O ports at db00 [size=8]
I/O ports at da00 [size=16]parport1: PC-style at 0xdd00 [PCSPP,TRISTATE]
parport2: PC-style at 0xdf00 [PCSPP,TRISTATE,EPP]
0000:02:00.0: ttyS0 at I/O 0xdb00 (irq = 19) is a 16550A
0000:02:00.0: ttyS1 at I/O 0xda00 (irq = 19) is a 16550ASigned-off-by: Christian Pellegrin
Cc: Thomas Richter
Cc: Bjorn Helgaas
Cc: Martin Schitter
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Added pci device id for the Quatech SPPXP-100 ExpressCard - 0x278 - to
include/linux/pci_id.hModified drivers/parport/parport_pc.c to support the Quatech SPPXP-100 Parallel port PCI ExpressCard
[akpm@linux-foundation.org: build fix]
Signed-off-by: Luís P Mendes
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
