sysfs can't handle more than PAGE_SIZE data coming from attributes'
show() methods; make sure we respect this limit.
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
acpi_eject_store() didn't trim processors, causing subsequent
hot-add to fail.
Signed-off-by: Ashok Raj <ashok.raj@intel.com>
Cc: Andi Kleen <ak@muc.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Len Brown <len.brown@intel.com>
On some boxes ecdt uid may be equal to 0, so do not test for uids equality,
so that fake handler will be unconditionally removed to allow loading the
real one.
See http://bugzilla.kernel.org/show_bug.cgi?id=6111
Signed-off-by: Jiri Slaby <jirislaby@gmail.com>
Cc: Luming Yu <luming.yu@intel.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Len Brown <len.brown@intel.com>
Local apic entries are only 8 bits, but it seemed to not be caught with u8
return value result in the check
cpu_index >= NR_CPUS becomming always false.
drivers/acpi/processor_core.c: In function `acpi_processor_get_info':
drivers/acpi/processor_core.c:483: warning: comparison is always false due to limited range of data type
Signed-off-by: Ashok Raj <ashok.raj@intel.com>
Cc: Dave Jones <davej@codemonkey.org.uk>
Cc: Kenji Kaneshige <kaneshige.kenji@soft.fujitsu.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Len Brown <len.brown@intel.com>
Even though the devices claimed by asus_acpi.c can not be hot-plugged, the
driver registration infrastructure allows the .add() and .remove() methods to
be called at any time while the driver is registered. So remove __init and
__exit from them.
Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Len Brown <len.brown@intel.com>
ACPI address space descriptors contain _MIN, _MAX, and _LEN. _MIN and _MAX
are the bounds within which the region can be moved (this is clarified in
Table 6-38 of the ACPI 3.0 spec). We should use _LEN to determine the size
of the region, not _MAX - _MIN + 1.
Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Len Brown <len.brown@intel.com>
Address space descriptors contain _MIN, _MAX, and _LEN. _MIN and _MAX are
the bounds within which the region can be moved (this is clarified in Table
6-38 of the ACPI 3.0 spec). We should use _LEN to determine the size of
the region, not _MAX - _MIN + 1.
Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Len Brown <len.brown@intel.com>
No functional changes; just remove leftover, unused "buffer" and simplify
control flow (no need to remember error values and goto the end, when we can
simply return the value directly).
Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Len Brown <len.brown@intel.com>
Remove the assumption that acpi_bus_register_driver() returns the number of
devices claimed. Returning the count is unreliable because devices may be
hot-plugged in the future (admittedly not applicable for this driver).
This also fixes a bug: if sonypi_acpi_driver was registered but found no
devices, sonypi_exit() did not unregister it.
Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Len Brown <len.brown@intel.com>
Remove the assumption that acpi_bus_register_driver() returns the number of
devices claimed. Returning the count is unreliable because devices may be
hot-plugged in the future (admittedly not applicable for this driver).
Since the hardware for this driver is not hot-pluggable, determine whether the
hardware is present by noticing calls to the .add() method. It would be
better to probe the ACPI namespace for the ASUS HIDs, and load the driver only
when we find one, but ACPI doesn't support that yet.
I don't have an ASUS laptop to test on, but on my HP dl360, it does report the
appropriate error when attempting to load the module:
$ sudo insmod drivers/acpi/asus_acpi.ko
insmod: error inserting 'drivers/acpi/asus_acpi.ko': -1 No such device
Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Len Brown <len.brown@intel.com>
acpi_bus_register_driver() should not return the number of devices claimed.
We're not asking to find devices, we're making a driver available to devices,
including hot-pluggable devices that may appear in the future.
I audited all callers of acpi_bus_register_driver(), and except asus_acpi.c
and sonypi.c (fixed in previous patches), all either ignore the return value
or test only for failure (<0).
Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Len Brown <len.brown@intel.com>
Add "ACPI" to motherboard resource allocation names, so people have a clue
about where to look. And remove some trailing spaces.
Changes these /proc/iomem entries from this:
ff5c1004-ff5c1007 : PM_TMR
ff5c1008-ff5c100b : PM1a_EVT_BLK
ff5c100c-ff5c100d : PM1a_CNT_BLK
ff5c1010-ff5c1013 : GPE0_BLK
ff5c1014-ff5c1017 : GPE1_BLK
to this:
ff5c1004-ff5c1007 : ACPI PM_TMR
ff5c1008-ff5c100b : ACPI PM1a_EVT_BLK
ff5c100c-ff5c100d : ACPI PM1a_CNT_BLK
ff5c1010-ff5c1013 : ACPI GPE0_BLK
ff5c1014-ff5c1017 : ACPI GPE1_BLK
Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Len Brown <len.brown@intel.com>
ACPI supports fixed hardware (PM_TMR, GPE blocks, etc) in either I/O port
or MMIO space, but used to always request the regions from I/O space
because it didn't check the address_space_id.
Sample ACPI fixed hardware in MMIO space (HP rx2600), was incorrectly
reported in /proc/ioports, now reported in /proc/iomem:
ff5c1004-ff5c1007 : PM_TMR
ff5c1008-ff5c100b : PM1a_EVT_BLK
ff5c100c-ff5c100d : PM1a_CNT_BLK
ff5c1010-ff5c1013 : GPE0_BLK
ff5c1014-ff5c1017 : GPE1_BLK
Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Len Brown <len.brown@intel.com>
Tidy up whitespace. No functional change.
Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Len Brown <len.brown@intel.com>
Factor out the duplicated switch from pnpacpi_count_resources() and
pnpacpi_type_resources(). Remove the unnecessary re-initialization of
resource->type and length from all the encode functions (id and length are
originally set in the pnpacpi_build_resource_template() ->
pnpacpi_type_resources() path).
Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Len Brown <len.brown@intel.com>
Fix resource_type handling for QWORD, DWORD, and WORD Address Space
Descriptors. Previously we ignored the resource_type, so I/O ports and bus
number ranges were incorrectly parsed as memory ranges.
Sample PCI root bridge resources from HP rx2600 before this patch:
# cat /sys/bus/pnp/devices/00:02/resources
state = active
mem 0x0-0x1f
mem 0x0-0x3af
mem 0x3e0-0x1fff
mem 0x80000000-0x8fffffff
With this patch:
# cat /sys/bus/pnp/devices/00:02/resources
state = active
io 0x0-0x3af
io 0x3e0-0x1fff
mem 0x80000000-0x8fffffff
mem 0x80004000000-0x80103fffffe
Changes:
0x0-0x1f PCI bus number range was incorrectly reported as memory, now
not reported at all
0x0-0x3af I/O port range was incorrectly reported as memory
0x3e0-0x1fff I/O port range was incorrectly reported as memory
0x80004000000-0x80103fffffe memory range wasn't reported at all because
we only support PNP_MAX_MEM (4) memory resources
Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Len Brown <len.brown@intel.com>
Otherwise, illegal configurations like X86_VOYAGER=y, PCI=y are
possible.
This patch also fixes the options select'ing ACPI to also select PCI.
Signed-off-by: Adrian Bunk <bunk@stusta.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Len Brown <len.brown@intel.com>
Don't overwrite SPD setting during hard reset. This change has the
(intended) side effect of honoring the BIOS configuration.
Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
When ata_set_mode() fails on a device, make ata_set_mode() return
error code and pointer to the device instead of disabling it directly.
This gives more control to higher level driving logic.
This patch does not change the end result (configured transfer mode)
although it may make libata repeat mode configuration to the peer of a
failing device. Later ata_bus_probe() rewrite will make full use of
this change.
Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
Goramo finally got PCI subsystem ID for their PCI200SYN card. The
attached patch adds support for it - cards with old EEPROM data
will emit a warning with URL for update tool.
Signed-off-by: Krzysztof Halasa <khc@pm.waw.pl>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
This patch adds support for the smc91x on the LogicPD PXA270 to
the smc91x driver.
Signed-off-by: Lennert Buytenhek <buytenh@wantstofly.org>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
Handle DRQ=1 ERR=1 situation. Revised according to what IDE try_to_flush_leftover_data() does.
Changes:
- For ATA PIO writes and ATAPI devices, just stop the HSM and let EH handle it.
- For ATA PIO reads, read only one block of junk data and then let EH handle it.
Signed-off-by: Albert Lee <albertcc@tw.ibm.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
Merge ata_host_set_pio() and ata_host_set_dma() into ata_set_mode()
and use function-level *dev to iterate over devices. This eases
soon-to-follow ata_set_mode() interface change.
While at it, kill an unnecessary comment and normalize others.
Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
Make ata_set_mode() return without doing anything if there is no
device on the port. This is in preparation for ata_bus_probe()
changes.
Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
This patch renames ata_dev_present() to ata_dev_enabled() and adds
ata_dev_disabled(). This is to discern the state where a device is
present but disabled from not-present state. This disctinction is
necessary when configuring transfer mode because device selection
timing must not be violated even if a device fails to configure.
Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
Make do_probe_reset() generic by pushing classification check into
ata_drive_probe_reset() and rename it to ata_do_reset(). This will be
used by EH reset.
Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
Separate out ata_spd_string() from sata_print_link_status(). This
will be used by SATA spd configuration routines.
Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
ata_bus_probe() uses unsigned int rc to receive negative errno and
returns the converted unsigned int value. Convert temporary variables
to int and make ata_bus_probe() return negative errno on failure.
Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
Make ata_set_mode() return correct error value when ata_dev_set_mode()
fails.
Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
Also cleans up some nearby whitespace problems.
Signed-off-by: Segher Boessenkool <segher@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
WARNING: "__you_cannot_kzalloc_that_much" [drivers/net/arcnet/com90xx.ko] undefined!
We're trying to allocate negative amounts of memory..
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Undo commit 100c467330
MMIOs timeout more quickly that PCI config cycles and some
of these SRAM accesses can take a very long time, triggering
the MMIO limits on some sparc64 PCI controllers and thus
resulting in bus timeouts and bus errors.
Signed-off-by: David S. Miller <davem@davemloft.net>
Tagged all external interfaces to the subsystem with the
new ACPI_EXPORT_SYMBOL macro. This macro can be defined
as necessary to assist kernel integration. For Linux,
the macro resolves to the EXPORT_SYMBOL macro. The default
definition is NULL.
Added the ACPI_THREAD_ID type for the return value from
acpi_os_get_thread_id(). This allows the host to define this
as necessary to simplify kernel integration. The default
definition is ACPI_NATIVE_UINT.
Valery Podrezov fixed two interpreter problems related
to error processing, the deletion of objects, and placing
invalid pointers onto the internal operator result stack.
http://bugzilla.kernel.org/show_bug.cgi?id=6028http://bugzilla.kernel.org/show_bug.cgi?id=6151
Increased the reference count threshold where a warning is
emitted for large reference counts in order to eliminate
unnecessary warnings on systems with large namespaces
(especially 64-bit.) Increased the value from 0x400
to 0x800.
Due to universal disagreement as to the meaning of the
'c' in the calloc() function, the ACPI_MEM_CALLOCATE
macro has been renamed to ACPI_ALLOCATE_ZEROED so that the
purpose of the interface is 'clear'. ACPI_MEM_ALLOCATE and
ACPI_MEM_FREE are renamed to ACPI_ALLOCATE and ACPI_FREE.
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
Implemented a change to the IndexField support to match
the behavior of the Microsoft AML interpreter. The value
written to the Index register is now a byte offset,
no longer an index based upon the width of the Data
register. This should fix IndexField problems seen on
some machines where the Data register is not exactly one
byte wide. The ACPI specification will be clarified on
this point.
Fixed a problem where several resource descriptor
types could overrun the internal descriptor buffer due
to size miscalculation: VendorShort, VendorLong, and
Interrupt. This was noticed on IA64 machines, but could
affect all platforms.
Fixed a problem where individual resource descriptors were
misaligned within the internal buffer, causing alignment
faults on IA64 platforms.
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
this changes if() BUG(); constructs to BUG_ON() which is
cleaner, contains unlikely() and can better optimized away.
Signed-off-by: Eric Sesterhenn <snakebyte@gmx.de>
Signed-off-by: Adrian Bunk <bunk@stusta.de>
this changes if() BUG(); constructs to BUG_ON() which is
cleaner, contains unlikely() and can better optimized away.
Signed-off-by: Eric Sesterhenn <snakebyte@gmx.de>
Signed-off-by: Adrian Bunk <bunk@stusta.de>
this changes if() BUG(); constructs to BUG_ON() which is
cleaner and can better optimized away
Signed-off-by: Eric Sesterhenn <snakebyte@gmx.de>
Signed-off-by: Adrian Bunk <bunk@stusta.de>
this changes if() BUG(); constructs to BUG_ON() which is
cleaner and can better optimized away
Signed-off-by: Eric Sesterhenn <snakebyte@gmx.de>
Signed-off-by: Adrian Bunk <bunk@stusta.de>
