CKEN macro definitions no longer contains the bit number; remove it
from usages in the pxa27x keyboard driver.
Signed-off-by: Russell King <[email protected]>
BUG: using smp_processor_id() in preemptible [00000001] code: opcontrol/427
Resolve this bug by ensuring that we're not using smp_processor_id() in
a preemptable context (by disabling preemption.)
Signed-off-by: Russell King <[email protected]>
Fix lockdep warnings, caused by 'set_affinity' being called without
the correct locks taken and local interrupts disabled:
=================================
[ INFO: inconsistent lock state ]
2.6.22-rc2 #1
---------------------------------
inconsistent {in-hardirq-W} -> {hardirq-on-W} usage.
swapper/1 [HC0[0]:SC0[0]:HE1:SE1] takes:
(irq_controller_lock){++..}, at: [<c002be50>] gic_set_cpu+0x60/0xa0
{in-hardirq-W} state was registered at:
[<c005d9a8>] lock_acquire+0x58/0x6c
[<c0233068>] _spin_lock+0x40/0x50
[<c002c020>] gic_mask_irq+0x2c/0x6c
[<c0069c64>] handle_level_irq+0x11c/0x14c
[<c0020060>] asm_do_IRQ+0x60/0x84
[<c0020d2c>] __irq_svc+0x4c/0xc0
[<c000ed84>] __alloc_bootmem_nopanic+0x74/0x88
[<c000edb0>] __alloc_bootmem+0x18/0x3c
[<c000fa00>] alloc_large_system_hash+0x16c/0x200
[<c00108dc>] inode_init_early+0x5c/0xa4
[<c00106dc>] vfs_caches_init_early+0x24/0xa0
[<c0008e54>] start_kernel+0x220/0x2fc
[<00008078>] 0x8078
irq event stamp: 88438
hardirqs last enabled at (88438): [<c0020dc0>] preempt_return+0x20/0x2c
hardirqs last disabled at (88436): [<c00417bc>] __do_softirq+0xb0/0x138
softirqs last enabled at (88437): [<c0041810>] __do_softirq+0x104/0x138
softirqs last disabled at (88428): [<c0041d9c>] irq_exit+0x68/0x7c
other info that might help us debug this:
no locks held by swapper/1.
stack backtrace:
[<c0025ecc>] (dump_stack+0x0/0x14) from [<c005b1e4>] (print_usage_bug+0x138/0x168)
[<c005b0ac>] (print_usage_bug+0x0/0x168) from [<c005be80>] (mark_lock+0x484/0x6a0)
[<c005b9fc>] (mark_lock+0x0/0x6a0) from [<c005cc48>] (__lock_acquire+0x3c0/0x10c8)
[<c005c888>] (__lock_acquire+0x0/0x10c8) from [<c005d9a8>] (lock_acquire+0x58/0x6c)
[<c005d950>] (lock_acquire+0x0/0x6c) from [<c0233068>] (_spin_lock+0x40/0x50)
[<c0233028>] (_spin_lock+0x0/0x50) from [<c002be50>] (gic_set_cpu+0x60/0xa0)
[<c002bdf0>] (gic_set_cpu+0x0/0xa0) from [<c01b04cc>] (em_route_irq+0x38/0x40)
[<c01b0494>] (em_route_irq+0x0/0x40) from [<c01b04ec>] (em_setup+0x18/0xa4)
[<c01b04d4>] (em_setup+0x0/0xa4) from [<c001570c>] (oprofile_arch_init+0x24/0xe8)
[<c00156e8>] (oprofile_arch_init+0x0/0xe8) from [<c0015640>] (oprofile_init+0x1c/0x64)
[<c0015624>] (oprofile_init+0x0/0x64) from [<c0008a20>] (kernel_init+0x154/0x368)
[<c00088cc>] (kernel_init+0x0/0x368) from [<c003ef34>] (do_exit+0x0/0x904)
oprofile: using arm/mpcore
Signed-off-by: Russell King <[email protected]>
Fix an oops in the stacktrace code, caused by improper range checking.
We subtract 12 off 'fp' before testing to see if it's below the low
bound. However, if 'fp' were zero before, it becomes a very large
positive number, causing this test to succeed where it should fail.
Signed-off-by: Russell King <[email protected]>
Presently, we check for the minimum ARM architecture that we're
building for to determine whether we need ASID support. This is
wrong - if we're going to support a range of CPUs which include
ARMv6 or higher, we need the ASID.
Convert the checks to use a new configuration symbol, and arrange
for ARMv6 and higher CPU entries to select it.
Signed-off-by: Russell King <[email protected]>
If DEBUG_LL is enabled, we want to use get_irq_regs(), but this
causes a build error due to the inline function missing. Add
the necessary header file.
Signed-off-by: Russell King <[email protected]>
No need for the cascade irq function to have a "fastcall" annotation.
Fix the range checking for valid IRQ numbers - comparing the value
returned by the GIC with NR_IRQS is meaningless since we translate
the GIC irq number to a Linux IRQ number afterwards.
Check the GIC returned IRQ number is within limits first, then add
the IRQ offset, and only then compare with NR_IRQS.
Signed-off-by: Russell King <[email protected]>
arch/arm/mach-omap1/Kconfig:41:warning: 'select' used by config
symbol 'MACH_OMAP_H3' refers to undefined symbol 'GPIOEXPANDER_OMAP'
Signed-off-by: Russell King <[email protected]>
Add utimensat, signalfd, timerfd, eventfd syscalls. Add ignore
defines for sync_file_range and fadvise64_64 which we implement
differently.
Signed-off-by: Russell King <[email protected]>
The Integrator/CP SMP platform support was never fully merged, and now
it's causing build breakage. Remove it.
Signed-off-by: Russell King <[email protected]>
Use the new get_irqnr_preamble macro to move the address of the IRQ
controller outside the IRQ handling loop.
Signed-off-by: Russell King <[email protected]>
arch/arm/mach-ebsa110/io.c:106: error: conflicting types for 'readsw'
arch/arm/mach-ebsa110/io.c:116: error: conflicting types for 'readsl'
arch/arm/mach-ebsa110/io.c:161: error: conflicting types for 'writesw'
arch/arm/mach-ebsa110/io.c:171: error: conflicting types for 'writesl'
Signed-off-by: Russell King <[email protected]>
Building on the previous two ecard infrastructure changes, this patch
fixes the pata_icside build errors caused by the recent libata changes.
Signed-off-by: Russell King <[email protected]>
Add devres ecardm_iomap() and ecardm_iounmap() for Acorn expansion
cards. Convert all expansion card drivers to use them.
Signed-off-by: Russell King <[email protected]>
Rather than having every driver fiddle about setting its private
IRQ operations and data, provide a helper function to contain
this functionality in one place.
Arrange to remove the driver-private IRQ operations and data when
the device is removed from the driver, and remove the driver
private code to do this.
This fixes potential problems caused by drivers forgetting to
remove these hooks.
Signed-off-by: Russell King <[email protected]>
Close a hole in the ASID version switch, particularly the following
scenario:
CPU0 MM PID CPU1 MM PID
idle
A pid(A)
A idle(lazy tlb)
* new asid version triggered by B *
B pid(B)
A pid(A)
* MM A gets new asid version *
A idle(lazy tlb)
A pid(A)
* CPU1 doesn't see the new ASID *
The result is that CPU1 continues running with the hardware set
for the original (stale) ASID value, but mm->context.id contains
the new ASID value. The result is that the next MM fault on CPU1
updates the page table entries, but flush_tlb_page() fails due to
wrong ASID.
There is a related case with a threaded application is allocated
a new ASID on one CPU while another of its threads is running on
some different CPU. This scenario is not fixed by this commit.
Signed-off-by: Russell King <[email protected]>
Commit 86c0baf123 highlighted that we
may end up with the head text placed elsewhere in the kernel image.
Introduce a new .text.head section to contain the initial kernel
startup code, and always place this section at the beginning of the
kernel image.
Signed-off-by: Russell King <[email protected]>
Fix false warning:
WARNING: arch/arm/kernel/init_task.o - Section mismatch:
reference to .init.task:init_thread_union from .data between
'init_task' (at offset 0x4) and 'init_sighand'
caused by the section name starting with ".init".
Signed-off-by: Russell King <[email protected]>
utrace removes the ptrace_message field in task_struct. Move our use
of this field into a new member in thread_info called "syscall"
Signed-off-by: Russell King <[email protected]>
__ioremap() took a set of page table flags (specifically the cacheable
and bufferable bits) to control the mapping type. However, with
the advent of ARMv6, this is far too limited.
Replace the page table flags with a memory type index, so that the
desired attributes can be selected from the mem_type table.
Finally, to prevent silent miscompilation due to the differing
arguments, rename the __ioremap() and __ioremap_pfn() functions.
Signed-off-by: Russell King <[email protected]>
Add cached device type for ioremap_cached(). Group all device memory
types together, and ensure that they all have a "MT_DEVICE" prefix.
Signed-off-by: Russell King <[email protected]>
Change the memory types table to define the L1 descriptor bit 4 to
be in terms of the ARMv6 definition - execute never.
Signed-off-by: Russell King <[email protected]>
Fix:
drivers/serial/8250.c:1837: warning: suggest parentheses around arithmetic in operand of |
due to a macro argument being used without required parenthesis.
Signed-off-by: Russell King <[email protected]>
'type' in the struct expansion_card is only used to indicate
whether this card is an EASI card or not. Therefore, having
it as an enum is wasteful (and introduces additional noise
when we come to remove the enum.) Convert it to a mere flag
instead.
Signed-off-by: Russell King <[email protected]>
Add pata_platform device for RiscPC, thereby converting the primary
IDE channel on the machine to PATA.
Acked-by: Jeff Garzik <[email protected]>
Signed-off-by: Russell King <[email protected]>
Although expansion cards can't do bus-master DMA, subsystems
want to be able to use coherent memory for DMA purposes to
these cards. Therefore, set the coherent DMA mask to allow
such memory to be allocated.
Signed-off-by: Russell King <[email protected]>
Add support for stacktrace. Use the new stacktrace code with
oprofile instead of it's version; there's no point having
multiple versions of stacktracing in the kernel.
Signed-off-by: Russell King <[email protected]>
Convert the AMBA PL010 serial driver to use the clock infrastructure
to allow EP93xx platforms to properly gate the clock to the UARTs.
Signed-off-by: Russell King <[email protected]>
Use a pointer to struct uart_amba_port throughout the driver
rather than a mixture of that and struct uart_port.
Signed-off-by: Russell King <[email protected]>
Add prot_pte_ext to the mem_types table to allow the extended pte
attributes to be passed to set_pte_ext(), thereby permitting us to
specify memory type information for the hardware PTE entries.
Signed-off-by: Russell King <[email protected]>
We really want to be using the memory type table in ioremap, so we
only have to do the CPU type fixups in one place.
Signed-off-by: Russell King <[email protected]>
Rather than our three separate loops to setup mappings (by page
mappings up to a section boundary, then section mappings, and the
remainder by page mappings) convert this to a more conventional
Linux style of a loop over each page table level.
Signed-off-by: Russell King <[email protected]>
Catalin Marinas at ARM Ltd says:
> The CPU architects in ARM intended supersections only as a way to map
> addresses >= 4GB. Supersections are not mandated by the architecture
> and there is no easy way to detect their hardware support at run-time
> (other than checking for a specific core). From the analysis done in
> ARM, there wasn't a clear performance gain by using supersections
> rather than sections (no significant improvement in the TLB misses).
Therefore, we should avoid using supersections unless there's a real
need (iow, we're mapping addresses >= 4GB).
This means that we can simplify create_mapping() a bit since we will
only use supersection mappings for addresses >= 4GB, which means that
the physical, virtual and length must be multiples of the supersection
mapping size.
Signed-off-by: Russell King <[email protected]>
There's now no need to carry around each protection separately.
Instead, pass around the pointer to the entry in the mem_types
array which we're interested in.
Signed-off-by: Russell King <[email protected]>
Rather than combining the domain for a particular memory type with
the protection information each time we want to use it, do so when
we fix up the mem_type array at initialisation time.
Rename struct mem_types to be mem_type - each structure is one
memory type description, not several.
Signed-off-by: Russell King <[email protected]>
Lots of places in arch/arm were needlessly including linux/ptrace.h,
resumably because we used to pass a struct pt_regs to interrupt
handlers. Now that we don't, all these ptrace.h includes are
redundant.
Signed-off-by: Russell King <[email protected]>
72486f1f8f inverted the sense for
enabling hotplug CPU controls without reference to any other
architecture other than i386, ia64 and PowerPC. This left
everyone else without hotplug CPU control.
Fix ARM for this brain damage.
Signed-off-by: Russell King <[email protected]>
Move the Acorn IOC/IOMD I2C bus driver from drivers/i2c, strip
out the reminants of the platform specific parts of the old
PCF8583 RTC code, and remove the old obsolete PCF8583 driver.
Signed-off-by: Russell King <[email protected]>
An off-by-one bug meant we were always trying to map one too many
scatterlist entries. This was mostly harmless prior to the checks
going in to consistent_sync(), but now causes the kernel to BUG.
Also, powertec.c was missing an assignment to info->ec.
Signed-off-by: Russell King <[email protected]>
SCSI doesn't want drivers to modify request_bufflen, so keep a
driver-private copy of this in the scsi_pointer structure instead.
Signed-off-by: Russell King <[email protected]>
Replace the I2C bus address, as per drivers/acorn/char/pcf8583.c.
Also, since this driver also contains Acorn RiscPC specific code
for obtaining the current year from the SRAM (and updating the
platform specific checksum when writing new data back) this is
NOT a platform independent driver.
Document it as such, and update the dependencies to reflect this
fact.
Signed-off-by: Russell King <[email protected]>
Both BCD_TO_BIN(x) and BIN_TO_BCD(x) have an unexpected side-effect -
not only do they return the value as expected, they _modify_ their
argument in the process.
Let's play it safe and avoid these macros.
Signed-off-by: Russell King <[email protected]>
Work around EBSA110 build errors by selecting NO_IOPORT. EBSA110
can't support an IO port to MMIO mapping mechanism because the
MMIO and IO port spaces have quite different and complex addressing
requirements.
Signed-off-by: Russell King <[email protected]>
CC [M] sound/arm/aaci.o
sound/arm/aaci.c:729: error: parse error before '*' token
sound/arm/aaci.c:731: warning: function declaration isn't a prototype
...
sound/arm/aaci.c:786: error: parse error before '*' token
sound/arm/aaci.c:786: warning: function declaration isn't a prototype
...
sound/arm/aaci.c:827: error: parse error before '*' token
sound/arm/aaci.c:828: warning: function declaration isn't a prototype
...
sound/arm/aaci.c:845: error: parse error before "aaci_capture_ops"
sound/arm/aaci.c:845: warning: type defaults to `int' in declaration of `aaci_capture_ops'
Signed-off-by: Russell King <[email protected]>
kernel/built-in.o: In function `pm_suspend':
utsname_sysctl.c:(.text+0x23008): multiple definition of `pm_suspend'
arch/arm/mach-sa1100/built-in.o:arch/arm/mach-sa1100/sleep.S:(.text+0xf68): first defined here
arm-linux-ld: Warning: size of symbol `pm_suspend' changed from 20 in arch/arm/mach-sa1100/built-in.o to 44 in kernel/built-in.o
Signed-off-by: Russell King <[email protected]>
CC arch/arm/mach-iop13xx/setup.o
arch/arm/mach-iop13xx/setup.c: In function 'iq8134x_probe_flash_size':
arch/arm/mach-iop13xx/setup.c:210: warning: implicit declaration of function 'ioremap'
arch/arm/mach-iop13xx/setup.c:210: warning: initialization makes pointer from integer without a cast
arch/arm/mach-iop13xx/setup.c:218: warning: implicit declaration of function 'writew'
arch/arm/mach-iop13xx/setup.c:222: warning: implicit declaration of function 'readb'
arch/arm/mach-iop13xx/setup.c:231: warning: implicit declaration of function 'iounmap'
LD .tmp_vmlinux1
arch/arm/mach-iop13xx/built-in.o: In function `iop13xx_platform_init':
iq81340mc.c:(.init.text+0x150): undefined reference to `ioremap'
iq81340mc.c:(.init.text+0x21c): undefined reference to `writew'
iq81340mc.c:(.init.text+0x24c): undefined reference to `writew'
iq81340mc.c:(.init.text+0x254): undefined reference to `iounmap'
iq81340mc.c:(.init.text+0x2c4): undefined reference to `readb'
iq81340mc.c:(.init.text+0x2e8): undefined reference to `readb'
Signed-off-by: Russell King <[email protected]>
CC arch/arm/common/sharpsl_pm.o
arch/arm/common/sharpsl_pm.c:30:31: error: asm/apm-emulation.h: No such file or directory
...
Signed-off-by: Russell King <[email protected]>
We don't currently support the noncoherent DMA API, but it needs to
be provided for kernels with devres to link.
Signed-off-by: Russell King <[email protected]>
Rather than printk'ing the dmabounce statistics occasionally to
the kernel log, provide a sysfs file to allow this information
to be periodically read.
Signed-off-by: Russell King <[email protected]>
dmabounce keeps a per-device structure, and finds the correct
structure by walking a list. Since architectures can now add
fields to struct device, we can attach this structure direct to
the struct device, thereby eliminating the code to search the
list.
Signed-off-by: Russell King <[email protected]>
Other platforms other than SMP may have an outer cache. For these, we
also need to mark the page table walks outer cacheable. Since marking
the walks always outer cacheable apparantly has no side effects, we
might as well always mark them so.
However, we continue to only mark PTWs shared if we have SMP enabled.
Signed-off-by: Russell King <[email protected]>
The DMA cache handling functions take virtual addresses, but in the
form of unsigned long arguments. This leads to a little confusion
about what exactly they take. So, convert them to take const void *
instead.
Signed-off-by: Russell King <[email protected]>
Memory allocated by the coherent memory allocators will be marked
uncacheable, which means it's pointless calling consistent_sync()
to perform cache maintainence on this memory; it's just a waste of
CPU cycles.
Moreover, with the (subsequent) merge of outer cache support, it
actually breaks things to call consistent_sync() on anything but
direct-mapped memory.
Signed-off-by: Russell King <[email protected]>
bad_mode() currently prints the mode which caused the exception, and
then causes an oops dump to be printed which again displays this
information (since the CPSR in the struct pt_regs is correct.) This
leads to processor_modes[] being shared between traps.c and process.c
with a local declaration of it.
We can clean this up by moving processor_modes[] to process.c and
removing the duplication, resulting in processor_modes[] becoming
static.
Signed-off-by: Russell King <[email protected]>
csum_fold doesn't need two assembly instructions to perform its task,
it can simply add the high and low parts together by rotating by 16
bits, and the carry into the upper-16 bits will automatically happen.
Also, since csum_tcpudp_magic() is just csum_tcpudp_nofold + csum_fold,
use those two functions to achieve this. Also note that there is a
csum_fold() at the end of ip_fast_csum() as well, so use the real
csum_fold() there as well.
Boot tested on Versatile.
Signed-off-by: Russell King <[email protected]>
Add the glue for ARM11 SMP oprofile support, which also supports the
performance monitor in the coherency unit.
Signed-off-by: Russell King <[email protected]>
Add oprofile glue for ARM11 (ARMv6) oprofile support. This
connects the ARM11 core profiling support to the oprofile code
for uniprocessor configurations.
Signed-off-by: Russell King <[email protected]>
Add basic support for the ARM11 profiling hardware. This is shared
between the ARM11 UP and ARM11 SMP oprofile support code.
Signed-off-by: Russell King <[email protected]>
Using console=ttyAM1 or console=ttyAMA1 resulted in an oops during
boot due to trying to drive the console before that port had been
registered. Fix this by checking whether the port is present before
allowing console setup to proceed.
Signed-off-by: Russell King <[email protected]>
show_mem() was assuming incorrectly that the mem_map for any
node started at PFN 0. This is obviously wrong; fix it to
take account of node_start_pfn.
Signed-off-by: Russell King <[email protected]>
Current sched_clock() implementations on ARM cause unbootable kernels
with PRINTK_TIME support enabled. To avoid this, provide a basic
printk_clock() implementation which avoids sched_clock() being called
before the page tables have been set up.
Signed-off-by: Russell King <[email protected]>
Russell King