Otherwise the device might just disappear while /dev/uioX is being used
which results in an Oops.
Signed-off-by: Uwe Kleine-König <Uwe.Kleine-Koenig@digi.com>
Signed-off-by: Hans J Koch <hjk@linutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This patch implements a UIO interface for the SMX Cryptengine.
The Cryptengine found on the Nias Digital SMX board is best suited
for a UIO interface. It is not wired in to the cryptographic API
as the engine handles it's own keys, algorithms, everything. All
that we know about is that if there's room in the buffer, you can
write data to it and when there's data ready, you read it out again.
There isn't necessarily even any direct correlation between data
going in and data coming out again, the engine may consume or
generate data all on its own.
This driver is for proprietary hardware but we're always told to
submit the drivers anyway; here you are. :-)
This is version 4 of this patch and addresses all issues raised by
Hans-Jürgen Koch and Paul Mundt in their reviews. Slightly altered
is Paul's suggestion to use DRV_NAME and DRV_VERSION as the UIO
version and name. While at the moment they are the same, there
is no reason for them to stay that way. Nevertheless we now at
least provide a MODULE_VERSION macro to keep modinfo happy.
Signed-off-by: Ben Nizette <bn@niasdigital.com>
Acked-by: Paul Mundt <lethal@linux-sh.org>
Signed-off-by: Hans J Koch <hjk@linutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Meanwhile, PCI_DEVICE_ID_PLX_9030 is defined in pci_ids.h, no need to
define it again in the driver.
Signed-off-by: Hans J. Koch <hjk@linutronix.de>
CC: Benedikt Spranger <b.spranger@linutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Source drivers/uio/Kconfig to make UIO available in menuconfig if ARCH=arm.
Signed-off-by: Hans J Koch <hjk@linutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Add warnings to kobject_put() to catch kobjects that are cleaned up but
were never initialized to begin with.
Cc: Kay Sievers <kay.sievers@vrfy.org>
Cc: Hannes Reinecke <hare@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
_urb_free is an alias for kfree... making code longer & harder to
read. Remove it.
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>
The functions time_before, time_before_eq, time_after, and time_after_eq
are more robust for comparing jiffies against other values.
A simplified version of the semantic patch making this change is as follows:
(http://www.emn.fr/x-info/coccinelle/)
// <smpl>
@ change_compare_np @
expression E;
@@
(
- jiffies <= E
+ time_before_eq(jiffies,E)
|
- jiffies >= E
+ time_after_eq(jiffies,E)
|
- jiffies < E
+ time_before(jiffies,E)
|
- jiffies > E
+ time_after(jiffies,E)
)
@ include depends on change_compare_np @
@@
#include <linux/jiffies.h>
@ no_include depends on !include && change_compare_np @
@@
#include <linux/...>
+ #include <linux/jiffies.h>
// </smpl>
Signed-off-by: Julia Lawall <julia@diku.dk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
The functions time_before, time_before_eq, time_after, and time_after_eq
are more robust for comparing jiffies against other values.
A simplified version of the semantic patch making this change is as follows:
(http://www.emn.fr/x-info/coccinelle/)
// <smpl>
@ change_compare_np @
expression E;
@@
(
- jiffies <= E
+ time_before_eq(jiffies,E)
|
- jiffies >= E
+ time_after_eq(jiffies,E)
|
- jiffies < E
+ time_before(jiffies,E)
|
- jiffies > E
+ time_after(jiffies,E)
)
@ include depends on change_compare_np @
@@
#include <linux/jiffies.h>
@ no_include depends on !include && change_compare_np @
@@
#include <linux/...>
+ #include <linux/jiffies.h>
// </smpl>
Signed-off-by: Julia Lawall <julia@diku.dk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
hci_usb: do not initialize static variables to 0.
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>
Herbert Xu's commit fb93134dfc, entitled
"[TCP]: Fix size calculation in sk_stream_alloc_pskb", has triggered a
bug in the 5701 where the 5701 DMA engine will corrupt outgoing
packets. This problem only happens when the starting address of the
packet matches a certain range of offsets and only when the 5701 is
placed downstream of a particular Intel bridge.
This patch detects the problematic bridge and if present, readjusts the
starting address of the packet data to a dword aligned boundary.
Signed-off-by: Matt Carlson <mcarlson@broadcom.com>
Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Code within NS_DEBUG_SPINLOCKS contained deprecated cli()/sti()
function calls. NS_DEBUG_SPINLOCKS and the associated code seems to
be of little use these days so the strategy of removing this code
rather then updating it to use spinlocks has been taken.
Signed-off-by: Mark Asselstine <mark.asselstine@windriver.com>
Reviewed-by: Matthew Wilcox <willy@linux.intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Reportred by Ingo Molnar:
drivers/net/wireless/iwlwifi/iwl-debugfs.c: In function 'iwl_dbgfs_stations_read':
drivers/net/wireless/iwlwifi/iwl-debugfs.c:256: error: 'struct iwl4965_tid_data' has no member named 'agg'
Needs CONFIG_IWL4965_HT protection.
Signed-off-by: David S. Miller <davem@davemloft.net>
Reported by Ingo Molnar.
The SIP helper is also useful without NAT. This patch adds an ifdef
around the RTP call optimization for NATed clients.
Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
This patch adds in the indirect call to pm_power_off(), as is done in
other architectures (e.g. ARM).
Tested on NGW100, with custom board with GPIO control over main DC
power.
Signed-off-by: Peter Ma <pma@mediamatech.com>
Signed-off-by: Haavard Skinnemoen <haavard.skinnemoen@atmel.com>
On Mon, Apr 14, 2008 at 03:36:24PM +0100, Alan Cox wrote:
> On Mon, 14 Apr 2008 17:17:21 +0300
> Adrian Bunk <bunk@kernel.org> wrote:
>
> > This patch fixes the following build error:
> >
> > <-- snip -->
> >
> > ...
> > CC [M] drivers/serial/8250.o
> > /home/bunk/linux/kernel-2.6/git/linux-2.6/drivers/serial/8250.c:95:24: error: asm/serial.h: No such file or directory
> > make[3]: *** [drivers/serial/8250.o] Error 1
> >
> > <-- snip -->
> >
> > Signed-off-by: Adrian Bunk <bunk@kernel.org>
> >
> > ---
> > 3cb4ef80d75e118ccfd44f7006aea3db54afb31c diff --git a/drivers/serial/Kconfig b/drivers/serial/Kconfig
> > index b1bbaa0..b0e216d 100644
> > --- a/drivers/serial/Kconfig
> > +++ b/drivers/serial/Kconfig
> > @@ -11,7 +11,7 @@ menu "Serial drivers"
> > # The new 8250/16550 serial drivers
> > config SERIAL_8250
> > tristate "8250/16550 and compatible serial support"
> > - depends on (BROKEN || !SPARC)
> > + depends on (BROKEN || !SPARC) && !AVR32
> > select SERIAL_CORE
> > ---help---
>
> NAK.
>
> Add an asm/serial.h to the platform as it has PCI so will have 8250 PCI
> devices available to it. A copy of the MIPS one should be right.
Patch below.
> Alan
cu
Adrian
<-- snip -->
This patch fixes the following build error with CONFIG_SERIAL_8250:
<-- snip -->
...
CC [M] drivers/serial/8250.o
/home/bunk/linux/kernel-2.6/git/linux-2.6/drivers/serial/8250.c:95:24: error: asm/serial.h: No such file or directory
make[3]: *** [drivers/serial/8250.o] Error 1
<-- snip -->
Signed-off-by: Adrian Bunk <bunk@kernel.org>
Acked-by: Alan Cox <alan@redhat.com>
Signed-off-by: Haavard Skinnemoen <haavard.skinnemoen@atmel.com>
This patch fixes the following compile error:
<-- snip -->
...
CC [M] drivers/parport/parport_pc.o
/home/bunk/linux/kernel-2.6/git/linux-2.6/drivers/parport/parport_pc.c:67:25: error: asm/parport.h: No such file or directory
/home/bunk/linux/kernel-2.6/git/linux-2.6/drivers/parport/parport_pc.c: In function 'parport_pc_find_ports':
/home/bunk/linux/kernel-2.6/git/linux-2.6/drivers/parport/parport_pc.c:3215: error: implicit declaration of function 'parport_pc_find_nonpci_ports'
make[3]: *** [drivers/parport/parport_pc.o] Error 1
<-- snip -->
Signed-off-by: Adrian Bunk <bunk@kernel.org>
Signed-off-by: Haavard Skinnemoen <haavard.skinnemoen@atmel.com>
This patch fixes the following compile error:
<-- snip -->
...
CC [M] drivers/char/genrtc.o
/home/bunk/linux/kernel-2.6/git/linux-2.6/drivers/char/genrtc.c:58:21: error: asm/rtc.h: No such file or directory
...
make[3]: *** [drivers/char/genrtc.o] Error 1
<-- snip -->
Signed-off-by: Adrian Bunk <bunk@kernel.org>
Signed-off-by: Haavard Skinnemoen <haavard.skinnemoen@atmel.com>
This patch fixes the following compile error:
<-- snip -->
...
CC [M] drivers/char/rtc.o
In file included from /home/bunk/linux/kernel-2.6/git/linux-2.6/drivers/char/rtc.c:70:
/home/bunk/linux/kernel-2.6/git/linux-2.6/include/linux/mc146818rtc.h:16:59: error: asm/mc146818rtc.h: No such file or directory
...
make[3]: *** [drivers/char/rtc.o] Error 1
<-- snip -->
Signed-off-by: Adrian Bunk <bunk@kernel.org>
Signed-off-by: Haavard Skinnemoen <haavard.skinnemoen@atmel.com>
This patch fixes the following compile error with CONFIG_MD_RAID456
on avr32:
<-- snip -->
...
CC [M] crypto/xor.o
/home/bunk/linux/kernel-2.6/git/linux-2.6/crypto/xor.c:23:21: error: asm/xor.h: No such file or directory
/home/bunk/linux/kernel-2.6/git/linux-2.6/crypto/xor.c: In function 'calibrate_xor_blocks':
/home/bunk/linux/kernel-2.6/git/linux-2.6/crypto/xor.c:131: error: 'XOR_TRY_TEMPLATES' undeclared (first use in this function)
/home/bunk/linux/kernel-2.6/git/linux-2.6/crypto/xor.c:131: error: (Each undeclared identifier is reported only once
/home/bunk/linux/kernel-2.6/git/linux-2.6/crypto/xor.c:131: error: for each function it appears in.)
make[2]: *** [crypto/xor.o] Error 1
<-- snip -->
Signed-off-by: Adrian Bunk <bunk@kernel.org>
Signed-off-by: Haavard Skinnemoen <haavard.skinnemoen@atmel.com>
This patch is a take two of adding full functionality to PLL1 on
AT32AP7000. This allows board-specific code and drivers to configure
and enable PLL1. This is useful when precise control over the
frequency of e.g. a genclock is needed and requested by users for the
ABDAC device.
The patch is based upon previous patches from both Haavard Skinnemoen
and David Brownell.
Signed-off-by: Hans-Christian Egtvedt <hcegtvedt@atmel.com>
Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com>
This combines three patches from David Brownell:
* avr32: tclib support
* avr32: simplify clocksources
* avr32: Turn count/compare into a oneshot clockevent device
Register both TC blocks (instead of just the first one) so that
the AT32/AT91 tclib code will pick them up (instead of just the
avr32-only PIT-style clocksource).
Rename the first one and its resources appropriately.
More cleanups to the cycle counter clocksource code
- Disable all the weak symbol magic; remove the AVR32-only TCB-based
clocksource code (source and header).
- Mark the __init code properly.
- Don't forget to report IRQF_TIMER.
- Make the system work properly with this clocksource, by preventing
use of the CPU "idle" sleep state in the idle loop when it's used.
Package the avr32 count/compare timekeeping support as a oneshot
clockevent device, so it supports NO_HZ and high res timers.
This means it also supports plugging in other clockevent devices
and clocksources.
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com>
Create a new file, pm-at32ap700x.S, in mach-at32ap and move the CPU
idle sleep code there. Make it possible to disable the sleep code.
Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com>
Move the only thing that was actually implemented and used in
asm/intc.h, intc_get_pending(), into asm/irq.h and delete asm/intc.h
Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com>
Start cleaning up the AVR32 clocksource mess, starting with the cycle
counter clocksource: remove unneeded pseudo-RTC (just inline that
call to mktime) and associated build warning, and unused sysdev.
Add comment about the problem using the cycle counter register,
and adjust the clocksource rating accordingly. Later patches can
make this usable again (by disabling use of the idle state and
providing a proper clocksource without the weak binding hacks)
and move towards TCB-based clockevent support (including high
resolution timers) that's shared between AT91 and AVR32.
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com>
New-style I2C drivers require that motherboard-mounted I2C devices are
registered with the I2C core, typically at arch_initcall time. This
can be done nice and neat by passing the struct i2c_board_info[]
through at32_add_device_twi just like we do for the SPI board info.
While we've got the hood up, remove a duplicate declaration of
at32_add_device_twi() in board.h.
[hskinnemoen@atmel.com: add missing i2c_board_info forward-declaration]
Signed-Off-By: Ben Nizette <bn@niasdigital.com>
Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com>
PAGE_SIZE is used both from assembly and C code. We want to have type
specifiers when using it from C, but this will make the assembler
confused, so we need to make it conditional.
This is exactly what the _AC macro is for, so using it allows us to
get rid of a few lines of cpp noise.
Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com>
This patchs adds the AVR32 architecture to the list of archs to generate a
table of raw keyboard keycodes.
Signed-off-by: Hans-Christian Egtvedt <hcegtvedt@atmel.com>
Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com>
Viktor was nice enough to enhance the document based on my replies to
his questions on the subject.
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
provide a text based interface to the scheduler features; this saves the
'user' from setting bits using decimal arithmetic.
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
In order to level the hierarchy, we need to calculate load based on the
root view. That is, each task's load is in the same unit.
A
/ \
B 1
/ \
2 3
To compute 1's load we do:
weight(1)
--------------
rq_weight(A)
To compute 2's load we do:
weight(2) weight(B)
------------ * -----------
rq_weight(B) rw_weight(A)
This yields load fractions in comparable units.
The consequence is that it changes virtual time. We used to have:
time_{i}
vtime_{i} = ------------
weight_{i}
vtime = \Sum vtime_{i} = time / rq_weight.
But with the new way of load calculation we get that vtime equals time.
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
De-couple load-balancing from the rb-trees, so that I can change their
organization.
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Currently FAIR_GROUP sched grows the scheduler latency outside of
sysctl_sched_latency, invert this so it stays within.
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Now that the group hierarchy can have an arbitrary depth the O(n^2) nature
of RT task dequeues will really hurt. Optimize this by providing space to
store the tree path, so we can walk it the other way.
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Add some extra debug output so we can get a better overview of the
full hierarchy.
We print the cgroup path after each cfs_rq, so we can see what group
we're looking at.
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Implement SMP nice support for the full group hierarchy.
On each load-balance action, compile a sched_domain wide view of the full
task_group tree. We compute the domain wide view when walking down the
hierarchy, and readjust the weights when walking back up.
After collecting and readjusting the domain wide view, we try to balance the
tasks within the task_groups. The current approach is a naively balance each
task group until we've moved the targeted amount of load.
Inspired by Srivatsa Vaddsgiri's previous code and Abhishek Chandra's H-SMP
paper.
XXX: there will be some numerical issues due to the limited nature of
SCHED_LOAD_SCALE wrt to representing a task_groups influence on the
total weight. When the tree is deep enough, or the task weight small
enough, we'll run out of bits.
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
CC: Abhishek Chandra <chandra@cs.umn.edu>
CC: Srivatsa Vaddagiri <vatsa@linux.vnet.ibm.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
[rebased for sched-devel/latest]
- Add a new cpuset file, having levels:
sched_relax_domain_level
- Modify partition_sched_domains() and build_sched_domains()
to take attributes parameter passed from cpuset.
- Fill newidle_idx for node domains which currently unused but
might be required if sched_relax_domain_level become higher.
- We can change the default level by boot option 'relax_domain_level='.
Signed-off-by: Hidetoshi Seto <seto.hidetoshi@jp.fujitsu.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
