27 Apr, 2007
17 commits
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Add board code and defconfig for the ATNGW100 Network Gateway kit.
For more information about this board, seehttp://www.atmel.com/dyn/products/tools_card.asp?tool_id=4102
Signed-off-by: Haavard Skinnemoen
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Using readb/writeb to implement these breaks NOR flash support. I
can't see any reason why regular memcpy and memset shouldn't work.Signed-off-by: Haavard Skinnemoen
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Since the core setup code takes care of both allocation and
reservation of framebuffer memory, there's no need for this board-
specific hook anymore. Replace it with two global variables,
fbmem_start and fbmem_size, which can be used directly.Signed-off-by: Haavard Skinnemoen
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With the current strategy of using the bootmem allocator to allocate
or reserve framebuffer memory, there's a slight chance that the
requested area has been taken by the boot allocator bitmap before we
get around to reserving it.By inserting the framebuffer region as a reserved region as early as
possible, we improve our chances for success and we make the region
visible as a reserved region in dmesg and /proc/iomem without any
extra work.Signed-off-by: Haavard Skinnemoen
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Use struct resource to specify both physical memory regions and
reserved regions and push everything into the same framework,
including kernel code/data and initrd memory. This allows us to get
rid of many special cases in the bootmem initialization and will also
make it easier to implement more robust handling of framebuffer
memory later.Signed-off-by: Haavard Skinnemoen
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Signed-off-by: Haavard Skinnemoen
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Fix the I/O access macros so that they work with externally connected
devices accessed in little-endian mode over any bus width:* Use a set of macros to define I/O port- and memory operations
borrowed from MIPS.
* Allow subarchitecture to specify address- and data-mangling
* Implement at32ap-specific port mangling (with build-time
configurable bus width. Only one bus width at a time supported
for now.)
* Rewrite iowriteN and friends to use write[bwl] and friends
(not the __raw counterparts.)This has been tested using pata_pcmcia to access a CompactFlash card
connected to the EBI (16-bit bus width.)Signed-off-by: Haavard Skinnemoen
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Fix a problem with the NMI handler entry code related to the NMI handler
sharing some code with the exception handlers. This is not a good idea
because the RSR and RAR registers are not the same, and the NMI handler
runs with interrupts masked the whole time so there's no need to check
for pending work.Open-code the low-level NMI handling logic instead so that the pt_regs
layout is actually correct when the higher-level handler is called.Signed-off-by: Haavard Skinnemoen
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* Use generic BUG() handling
* Remove some useless debug statements
* Use a common function _exception() to send signals or oops when
an exception can't be handled. This makes sure init doesn't
enter an infinite exception loop as well. Borrowed from powerpc.
* Add some basic exception tracing support to the page fault code.
* Rework dump_stack(), show_regs() and friends and move everything
into process.c
* Print information about configuration options and chip type when
oopsingSigned-off-by: Haavard Skinnemoen
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Clean up the cpu identification code, using definitions from
instead of hardcoded constants. Also, add a features
bitmap to struct avr32_cpuinfo to allow other code to make decisions
based upon what the running cpu is actually capable of.Signed-off-by: Haavard Skinnemoen
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Fix indentation and remove spurious comments in asm-avr32/sysreg.h
Signed-off-by: Haavard Skinnemoen
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Bring the code that sets the initial PM clock masks in line with the
comment preceding it by only enabling clocks that have users != 0.
Fix SM clock definition and avr32_hpt_init() so that the SM and TC0
clocks keep ticking.Signed-off-by: Haavard Skinnemoen
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This patch puts the CPU in sleep 0 when doing nothing, idle. This will
turn of the CPU clock and thus save power. The CPU is waken again when
an interrupt occurs.Signed-off-by: Hans-Christian Egtvedt
Signed-off-by: Haavard Skinnemoen -
Due to limitation of the count-compare system timer (not able to
count when CPU is in sleep), the system timer had to be changed to
use a peripheral timer/counter.The old COUNT-COMPARE code is still present in time.c as weak
functions. The new timer is added to the architecture directory.This patch sets up TC0 as system timer The new timer has been tested
on AT32AP7000/ATSTK1000 at 100 Hz, 250 Hz, 300 Hz and 1000 Hz.For more details about the timer/counter see the datasheet for
AT32AP700x available athttp://www.atmel.com/dyn/products/product_card.asp?part_id=3903
Signed-off-by: Hans-Christian Egtvedt
Signed-off-by: Haavard Skinnemoen -
Include at32ap-specific Kconfig file from top-level Kconfig file. The
at32ap Kconfig is currently empty, but it will grow some machine-
specific options soon.Signed-off-by: Haavard Skinnemoen
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Complete the SMC configuration code by adding nwait and tdf
parameter. After this change, we support the same parameters as the
hardware.Signed-off-by: Haavard Skinnemoen
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This adds register and clock definitions for the High-speed bus Matrix
(HMATRIX) as well as a function that can be used to configure special
EBI functionality like CompactFlash and NAND flash support.Signed-off-by: Haavard Skinnemoen
26 Apr, 2007
5 commits
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.. ok, enough waffling about it already. "Just do it!"
Signed-off-by: Linus Torvalds
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* master.kernel.org:/pub/scm/linux/kernel/git/davem/sparc-2.6:
[PARPORT] SUNBPP: Fix OOPS when debugging is enabled.
[SPARC] openprom: Switch to ref counting PCI API -
* master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6:
[NETLINK]: Infinite recursion in netlink. -
The packet driver is assuming (reasonably) that the (undocumented)
request.errors is an errno. But it is in fact some mysterious bitfield. When
things go wrong we return weird positive numbers to the VFS as pointers and it
goes oops.Thanks to William Heimbigner for reporting and diagnosis.
(It doesn't oops, but this driver still doesn't work for William)
Cc: William Heimbigner
Cc: Peter Osterlund
Cc: Jens Axboe
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Reply to NETLINK_FIB_LOOKUP messages were misrouted back to kernel,
which resulted in infinite recursion and stack overflow.The bug is present in all kernel versions since the feature appeared.
The patch also makes some minimal cleanup:
1. Return something consistent (-ENOENT) when fib table is missing
2. Do not crash when queue is empty (does not happen, but yet)
3. Put result of lookupSigned-off-by: Alexey Kuznetsov
Signed-off-by: David S. Miller
25 Apr, 2007
13 commits
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There's a really rare and obscure bug in CFQ, that causes a crash in
cfq_dispatch_insert() due to rq == NULL. One example of the resulting
oops is seen here:http://lkml.org/lkml/2007/4/15/41
Neil correctly diagnosed the situation for how this can happen: if two
concurrent requests with the exact same sector number (due to direct IO
or aliasing between MD and the raw device access), the alias handling
will add the request to the sortlist, but next_rq remains NULL.Read the more complete analysis at:
http://lkml.org/lkml/2007/4/25/57
This looks like it requires md to trigger, even though it should
potentially be possible to due with O_DIRECT (at least if you edit the
kernel and doctor some of the unplug calls).The fix is to move the ->next_rq update to when we add a request to the
rbtree. Then we remove the possibility for a request to exist in the
rbtree code, but not have ->next_rq correctly updated.Signed-off-by: Jens Axboe
Signed-off-by: Linus Torvalds -
Oops, thinko. The test for accempting a RH0 was exatly the wrong way
around.Signed-off-by: YOSHIFUJI Hideaki
Signed-off-by: Linus Torvalds -
* master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6:
[BNX2]: Fix occasional NETDEV WATCHDOG on 5709.
[IPV6]: Disallow RH0 by default.
[XFRM]: beet: fix pseudo header length value
[TCP]: Congestion control initialization. -
Tweak a register setting to prevent the tx mailbox from halting.
Update version to 1.5.8.
Signed-off-by: Michael Chan
Signed-off-by: David S. Miller -
A security issue is emerging. Disallow Routing Header Type 0 by default
as we have been doing for IPv4.
Note: We allow RH2 by default because it is harmless.Signed-off-by: YOSHIFUJI Hideaki
Signed-off-by: David S. Miller -
This did cause oprofile to fail on non-multithreaded systems with more
than 2 processors such as the BCM1480.Reported by Manish Lachwani (mlachwani@mvista.com).
Signed-off-by: Ralf Baechle
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* 'upstream-linus' of master.kernel.org:/pub/scm/linux/kernel/git/jgarzik/netdev-2.6:
drivers/net/hamradio/baycom_ser_fdx build fix
usb-net/pegasus: fix pegasus carrier detection
sis900: Allocate rx replacement buffer before rx operation
[netdrvr] depca: handle platform_device_add() failure -
sparc64:
drivers/net/hamradio/baycom_ser_fdx.c: In function `ser12_open':
drivers/net/hamradio/baycom_ser_fdx.c:417: error: `NR_IRQS' undeclared (first us
e in this function)
drivers/net/hamradio/baycom_ser_fdx.c:417: error: (Each undeclared identifier is
reported only once
drivers/net/hamradio/baycom_ser_fdx.c:417: error: for each function it appears i
n.)Cc: Folkert van Heusden
Cc: Alan Cox
Signed-off-by: Andrew Morton
Signed-off-by: Jeff Garzik -
Broken by 4a1728a28a193aa388900714bbb1f375e08a6d8e which switched the
return semantics of read_mii_word() but didn't fix usage of
read_mii_word() to conform to the new semantics.Setting carrier to off based on the NO_CARRIER flag is also incorrect as
that flag only triggers on TX failure and therefore isn't correct when
no frames are being transmitted. Since there is already a 2*HZ MII
carrier check going on, defer to that.Add a TRUST_LINK_STATUS feature flag for adapters where the LINK_STATUS
flag is actually correct, and use that rather than the NO_CARRIER flag.Signed-off-by: Dan Williams
Signed-off-by: Jeff Garzik -
The sis900 driver appears to have a bug in which the receive routine
passes the skbuff holding the received frame to the network stack before
refilling the buffer in the rx ring. If a new skbuff cannot be allocated, the
driver simply leaves a hole in the rx ring, which causes the driver to stop
receiving frames and become non-recoverable without an rmmod/insmod according to
reporters. This patch reverses that order, attempting to allocate a replacement
buffer first, and receiving the new frame only if one can be allocated. If no
skbuff can be allocated, the current skbuf in the rx ring is recycled, dropping
the current frame, but keeping the NIC operational.Signed-off-by: Neil Horman
Signed-off-by: Jeff Garzik -
The following patch fixes a kernel bug in depca_platform_probe().
We don't use a dynamic pointer for pldev->dev.platform_data, so it seems
that the correct way to proceed if platform_device_add(pldev) fails is
to explicitly set the pldev->dev.platform_data pointer to NULL, before
calling the platform_device_put(pldev), or it will be kfree'ed by
platform_device_release().Signed-off-by: Jeff Garzik
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* 'for-linus' of git://one.firstfloor.org/home/andi/git/linux-2.6:
[PATCH] i386: Fix some warnings added by earlier patch
[PATCH] x86-64: Always flush all pages in change_page_attr
[PATCH] x86: Remove noreplacement option
[PATCH] x86-64: make GART PTEs uncacheable -
* master.kernel.org:/pub/scm/linux/kernel/git/bart/ide-2.6:
Revert "adjust legacy IDE resource setting (v2)"
24 Apr, 2007
5 commits
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Commit 40b36daa introduced possibility that serial8250_backup_timeout() ->
serial8250_handle_port() locks port.lock without disabling irqs, thus
allowing deadlock against interrupt handler (port.lock is acquired in
serial8250_interrupt()).Spotted by lockdep.
Signed-off-by: Jiri Kosina
Cc: Dave Jones
Cc: Russell King
Cc: Alex Williamson
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Add maintainer for fault injection support.
Signed-off-by: Akinobu Mita
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Two functions are called from __devinit context, but they are marked as
__init. Fix this.Signed-off-by: Jiri Slaby
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
The listxattr() and getxattr() operations are only protected by a read
lock. As a result, if either of these operations run in parallel, a race
condition exists where the xattr_root will end up being cached twice, which
results in the leaking of a reference and a BUG() on umount.This patch refactors get_xa_root(), __get_xa_root(), and create_xa_root(),
into one get_xa_root() function that takes the appropriate locking around
the entire critical section.Reported, diagnosed and tested by Andrea Righi
Signed-off-by: Jeff Mahoney
Cc: Andrea Righi
Cc: "Vladimir V. Saveliev"
Cc: Edward Shishkin
Cc: Alex Zarochentsev
Cc:
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
On ia64, kernel headers define REGION_OFFSET so we can't use that.
Reported by Andrew Morton.Signed-off-by: Jean Delvare
Acked-by: David Hubbard
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
