Make unnecessarily generic code specific and thus simpler.
Shrink a lookup table from 128 to 16 bytes.
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
The biggest chunk ever allocated by CSR1212_MALLOC is 1024 Bytes +
sizeof(struct csr1212_csr_rom_cache) big. Most of the time much
smaller data structures are allocated. Therefore vmalloc is a waste.
The one exception is csr1212_append_new_cache() which is called to
append a chunk of CSR1212_EXTENDED_ROM_SIZE + sizeof(struct
csr1212_csr_rom_cache) if the currently allocated ROM cache is too
small. CSR1212_EXTENDED_ROM_SIZE is generously defined as 256 kBytes.
In SVN commit 1220, Steve Kinneberg lowered this to 2 kBytes in the
config_rom_2.4 branch. This same commit also switched CSR1212_MALLOC
from kmalloc to vmalloc in the SVN trunk branch:
> r1220 | kberg | 2004-05-31 01:51:44 +0200 (Mon, 31 May 2004) | 13 lines
>
> CSR1212 Extended ROM bug fixes:
> trunk line changes:
> - Use vmalloc instead of kmalloc
> - Change delayed_reset_bus() to operate in a work_queue instead of a
> timer interrupt.
> - Fix hpsb_allocate_and_register_addrspace() to not allocate space
> on top of already allocated space.
> - Fix problems in csr1212.c filling ConfigROM images when extend
> ROMs are present.
> config-rom-2.4 changes:
> - Changed extended rom allocation from 256K to 8K.
(It was actually 2 kB, not 8 kB.)
> - Fix hpsb_allocate_and_register_addrspace() to not allocate space
> on top of already allocated space.
> - Fix problems in csr1212.c filling ConfigROM images when extend
> ROMs are present.
I am now setting CSR1212_EXTENDED_ROM_SIZE to 2 kB minus the overhead of
struct csr1212_csr_rom_cache. Note, this code path is not used by the
in-kernel drivers though. raw1394 could trigger it, but the respective
libraw1394 functions don't exist yet.
Furthermore, userspace programs can replace the entire local ROM via
raw1394. If kmalloc does not fulfill their needs --- well, tough luck.
I decree that nobody needs such huge extended ROMs. (Extended ROMs are
defined by IEEE 1212 clause 7.7.18. The spec does not impose
practically relevant restrictions on the size of extended ROM chunks.)
Another potentially demanding use of CSR1212_MALLOC is if external
FireWire devices come with Extended ROM entries. If they are too big
for kmalloc (or have been too big for vmalloc) we just fail to read
their ROM. This is quite unlikely though, to my knowledge.
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
This small reorganization of public csr1212 functions saves one
exported symbol and a few bytes in the driver modules.
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
csr1212 was written to be compiled either as part of the ieee1394 kernel
driver or of an anticipated IEEE 1212 userspace library. We now drop
support for the latter. The costs in terms of code footprint and depth
of abstraction are not countered by any actual benefit.
Also remove some obsolete #includes.
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
Delete unused code.
Make some extern functions static.
Remove superfluous inline keywords.
Move private definitions from csr1212.h to csr1212.c.
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
drivers/ieee1394/sbp2.c: In function 'sbp2util_access_timeout':
drivers/ieee1394/sbp2.c:399: error: 'TASK_INTERRUPTIBLE' undeclared (first use in this function)
drivers/ieee1394/sbp2.c:399: error: (Each undeclared identifier is reported only once
drivers/ieee1394/sbp2.c:399: error: for each function it appears in.)
drivers/ieee1394/sbp2.c:399: warning: implicit declaration of function 'signal_pending'
drivers/ieee1394/sbp2.c:399: warning: implicit declaration of function 'schedule_timeout'
drivers/ieee1394/sbp2.c: In function 'sbp2_prep_command_orb_sg':
drivers/ieee1394/sbp2.c:1438: warning: implicit declaration of function 'page_address'
drivers/ieee1394/sbp2.c:1438: warning: passing argument 2 of 'dma_map_single' makes pointer from integer without a cast
drivers/ieee1394/sbp2.c: In function 'sbp2_handle_status_write':
drivers/ieee1394/sbp2.c:1842: error: 'TASK_INTERRUPTIBLE' undeclared (first use in this function)
Possibly due to changes in -mm, but this file should explicitly include the
headers for the stuff it uses.
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de> (brought into alphabetic order)
When the command ORB pool is created, the ORB list won't be accessed
concurrently. Therefore we don't have to take the spinlock there.
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
Unlike the name suggests, "cmd->scatter_gather_element" holds only the
s/g table, not the actual s/g elements. Since the table is only read
but never written by the device, DMA_BIDIRECTIONAL can be replaced by
DMA_TO_DEVICE which may be cheaper on some architectures.
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
In order to use OHCI-1394 physical DMA, all s/g elements, s/g tables,
ORBs, and response buffers have to reside within the first 4 GB of the
FireWire controller's physical address space. Set the correct mask for
DMA mappings.
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
The members "dma_addr_t command_orb_dma" and "dma_addr_t sge_dma" of
sbp2.h::sbp2_command_info do not have to be aligned themselves --- only
the memory which they point to has to be.
The member "struct sbp2_command_orb command_orb" has to be aligned on
4 bytes boundary which is guaranteed because it contains u32 members.
The member "struct sbp2_unrestricted_page_table scatter_gather_element",
i.e. the SBP-2 s/g table, has to be aligned on 8 bytes boundary
according to the SBP-2 spec. This is not a requirement for FireWire
controllers but could be expected by SBP-2 targets.
I see no need to align the members command_orb and
scatter_gather_element on CPU cacheline boundaries. It could have
performance benefits, but on the other hand sbp2 has a somewhat wasteful
allocation scheme which should be optimized first before further tweaks
like cacheline alignments. (E.g. don't always allocate SG_ALL s/g table
elements.)
Note, before as well as after the patch, the code relies on the
assumption that memory alignment in the virtual address space is
preserved in the physical address space after DMA mapping.
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
* 'upstream-linus' of master.kernel.org:/pub/scm/linux/kernel/git/jgarzik/netdev-2.6: (107 commits)
smc911x: fix compilation breakage wjen debug is on
[netdrvr] eexpress: minor corrections
add NAPI support to sb1250-mac.c
ixgb: ROUND_UP macro cleanup in drivers/net/ixgb
e1000: ROUND_UP macro cleanup in drivers/net/e1000
Generic HDLC sparse annotations
e100: Optionally use I/O mode only to access register space
e100: allow bad MAC address when running with invalid eeprom csum
ehea: fix for dlpar support
ehea: fix for sysfs entries
3C509: Remove unnecessary include of <linux/pm_legacy.h>
NetXen: Fix for vmalloc issues
NetXen: Fixes for Power PC architecture
NetXen: Port swap feature for multi port cards
NetXen: Removal of redundant macros
NetXen: Multi PCI support for Quad cards
NetXen: Removal of redundant argument passing
NetXen: Use multiple PCI functions
[netdrvr e100] experiment with doing RX in a similar manner to eepro100
[PATCH] ieee80211: add missing global needed by IEEE80211_DEBUG_XXXX
...
* 'upstream-linus' of master.kernel.org:/pub/scm/linux/kernel/git/jgarzik/libata-dev: (86 commits)
SPIN_LOCK_UNLOCKED cleanup in drivers/ata/pata_winbond.c
drivers/ata/pata_cmd640.c: fix build with CONFIG_PM=n
pata_hpt37x: Further small fixes
pata_hpt3x2n: Add HPT371N support and other bits
ata: printk warning fixes
libata: separate ATA_EHI_DID_RESET into DID_SOFTRESET and DID_HARDRESET
ahci: consolidate common port flags
ata_timing: ensure t->cycle is always correct
libata: add missing call to ->cable_detect() in new EH path
pata_amd: remove contamination added during cable_detect conversion
libata: Handle drives that require a spin-up command before first access
libata: HPA support
libata: kill probe_ent and related helpers
libata: convert the remaining PATA drivers to new init model
libata: convert the remaining SATA drivers to new init model
libata: convert ata_pci_init_native_mode() users to new init model
libata: convert drivers with combined SATA/PATA ports to new init model
libata: add init helpers including ata_pci_prepare_native_host()
libata: convert native PCI host handling to new init model
libata: convert legacy PCI host handling to new init model
...
* 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-acpi-2.6: (105 commits)
sonypi: use mutex instead of semaphore
sony-laptop: remove user visible camera controls as platform attributes
meye: make meye use sony-laptop instead of sonypi
sony-laptop: add a meye-usable include file for camera ops
sony-laptop: complete the motion eye camera support in sony-laptop
sonypi: try to detect if sony-laptop has already taken one of the known ioports
sonypi: suggest sonypi users to try sony-laptop instead
sony-laptop: add edge modem support (also called WWAN)
sony-laptop: add locking on accesses to the ioport and global vars
sony-laptop: add camera enable/disable parameter, better handle possible infinite loop
thinkpad-acpi: make drivers/misc/thinkpad_acpi:fan_mutex static
ACPI: thinkpad-acpi: add sysfs support to wan and bluetooth subdrivers
ACPI: thinkpad-acpi: add sysfs support to hotkey subdriver
ACPI: thinkpad-acpi: improve dock subdriver initialization
ACPI: thinkpad-acpi: improve debugging for acpi helpers
ACPI: thinkpad-acpi: improve fan control documentation
ACPI: thinkpad-acpi: map ENXIO to EINVAL for fan sysfs
ACPI: thinkpad-acpi: fix a fan watchdog invocation
ACPI: thinkpad-acpi: do not arm fan watchdog if it would not work
ACPI: thinkpad-acpi: add a fan-control feature master toggle
...
It turns out that there are broken devices out there that incorrectly
report VID/PID as 0x000, see http://lkml.org/lkml/2007/4/27/496
Therefore we should not confuse users by dumping warnings and stacktraces
in such situation. It is not possible to add quirks for such horribly
broken devices, but currently that's not needed.
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Calling smp_call_function can lead to a deadlock if it is called
from tasklet context.
Fixing this deadlock requires to move the smp_call_function from the
tasklet context to a work queue. To do that queue the path pending
interrupts to a separate list and move the path cleanup out of
iucv_path_sever to iucv_path_connect and iucv_path_pending.
This creates a new requirement for iucv_path_connect: it may not be
called from tasklet context anymore.
Also fixed compile problem for CONFIG_HOTPLUG_CPU=n and
another one when walking the cpu_online mask. When doing this,
we must disable cpu hotplug.
Signed-off-by: Frank Pavlic <fpavlic@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This updates references to drafts in comments which must be about 10
years old. Internet draft draft-ietf-tcpimpl-prob-03.txt expired in 1998
and was replaced by RFC 2525 in March 1999.
Section 3.10 of the draft maps almost identically into section 2.17 of RFC
2525: both are entitled "Failure to RST on close with data pending", the
differences in text body amount to a typo and minor sentence change.
Signed-off-by: Gerrit Renker <gerrit@erg.abdn.ac.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
With this patch you can use iproute2 in user space to efficiently see
how many policies exist in different directions.
Signed-off-by: Jamal Hadi Salim <hadi@cyberus.ca>
Signed-off-by: David S. Miller <davem@davemloft.net>
When network device's are renamed, the IPV6 snmp6 code
gets confused. It doesn't track name changes so it will OOPS
when network device's are removed.
The fix is trivial, just unregister/re-register in notify handler.
Signed-off-by: Stephen Hemminger <shemminger@linux-foundation.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
sctp_getsockopt_local_addrs_old() in net/sctp/socket.c calls
copy_to_user() while the spinlock addr_lock is held. this should not
be done as copy_to_user() might sleep. the call to
sctp_copy_laddrs_to_user() while holding the lock is also problematic
as it calls copy_to_user()
Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Herbert Xu conviced me that a new flag was overkill; every driver
currently overrides get_stats, so we might as well make the internal
one the default. If someone did fail to set get_stats, they would now
get all 0 stats instead of "No statistics available".
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Acked-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
Get rid of the CONFIG_NETPOLL_RX option completely since all the
dependencies have been removed long ago...
Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Acked-by: Jeff Garzik <jgarzik@pobox.com>
Acked-by: Matt Mackall <mpm@selenic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
CONFIG_NETPOLL_TRAP causes the TX queue controls to be completely bypassed in
the netpoll's "trapped" mode which easily causes overflows in the drivers with
short TX queues (most notably, in 8139too with its 4-deep queue). So, make
this option more sensible by making it only bypass the TX softirq wakeup.
Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Acked-by: Jeff Garzik <jgarzik@pobox.com>
Acked-by: Tom Rini <trini@kernel.crashing.org>
Acked-by: Matt Mackall <mpm@selenic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
the Sony Programmable I/O Control driver uses a semaphore as
mutex. use the mutex API instead of the (binary) semaphore
Signed-off-by: Matthias Kaehlcke <matthias.kaehlcke@gmail.com>
Acked-by: Mattia Dongili <malattia@linux.it>
Signed-off-by: Len Brown <len.brown@intel.com>
Avoid giving the user the possibility to shoot his own foot and let
the meye driver enable/disable the camera wisely (PCI_ID based).
Signed-off-by: Mattia Dongili <malattia@linux.it>
Signed-off-by: Len Brown <len.brown@intel.com>
Change sonypi_camera_command() calls to sony_pic_camera_command() and use
the renamed macros.
Signed-off-by: Mattia Dongili <malattia@linux.it>
Signed-off-by: Len Brown <len.brown@intel.com>
Copy and rename (for easier co-existence) the MEYE-wise exported interface.
Signed-off-by: Mattia Dongili <malattia@linux.it>
Signed-off-by: Len Brown <len.brown@intel.com>
Add the exported sony_pic_camera_command() function to make the MEYE
driver happy.
Signed-off-by: Mattia Dongili <malattia@linux.it>
Signed-off-by: Len Brown <len.brown@intel.com>
Get the IO resources list in sony-laptop in the same order as listed
in sonypi and make sonypi check if one of those is already busy.
The sonypi check can be disabled by a module parameter in case the user
thinks we are plainly wrong (check_ioport=0).
Signed-off-by: Mattia Dongili <malattia@linux.it>
Signed-off-by: Len Brown <len.brown@intel.com>
Try to migrate sonypi users to sony-laptop gracefully.
Signed-off-by: Mattia Dongili <malattia@linux.it>
Signed-off-by: Len Brown <len.brown@intel.com>
Some SZ Vaios have a gsm built-in modem. Allow powering on/off this device.
Thanks to Joshua Wise for the base code.
Signed-off-by: Mattia Dongili <malattia@linux.it>
Signed-off-by: Len Brown <len.brown@intel.com>
Better avoid having ioport commands mixing and global variables reading/writing.
Signed-off-by: Mattia Dongili <malattia@linux.it>
Signed-off-by: Len Brown <len.brown@intel.com>
Use a parameter to enable/disable motion eye camera (for C1VE/C1VN models)
controls and avoid entering an infinite loop if the camera is not present
and the HW doesn't answer as we expect on io commands.
Signed-off-by: Mattia Dongili <malattia@linux.it>
Signed-off-by: Len Brown <len.brown@intel.com>
This patch makes the needlessly global fan_mutex static.
Signed-off-by: Adrian Bunk <bunk@stusta.de>
Acked-by: Henrique de Moraes Holschuh <hmh@hmh.eng.br>
Signed-off-by: Len Brown <len.brown@intel.com>
Add support to sysfs to the wan and bluetooth subdrivers.
Signed-off-by: Henrique de Moraes Holschuh <hmh@hmh.eng.br>
Signed-off-by: Len Brown <len.brown@intel.com>
