iv/linux
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity
ade6d810b5
linux/drivers
History
David Fries ade6d810b5 W1: ds2490.c optimize ds_set_pullup 
Optimize the ds_set_pullup function.  For a strong pullup to be sent the
ds2490 has to have both the strong pullup mode enabled, and the specific
write operation has to have the SPU bit enabled.  Previously the write
always had the SPU bit enabled and both the duration and model was set
when a strong pullup was requested.  Now the strong pullup mode is enabled
at initialization time, the delay is updated only when the value changes,
and the write SPU bit is set only when a strong pullup is required.  This
removes two or three bus transactions per strong pullup request.

Signed-off-by: David Fries <david@fries.net>
Signed-off-by: Evgeniy Polyakov <johnpol@2ka.mipt.ru>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-10-16 11:21:51 -07:00
..
accessibility braille_console: only register notifiers when the braille console is used 2008-10-02 15:53:13 -07:00
acpi rtc-cmos: move wake setup from ACPI glue into RTC driver 2008-10-14 16:08:21 -07:00
amba
ata Merge commit 'origin' 2008-10-15 11:31:54 +11:00
atm Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/torvalds/linux-2.6 2008-10-11 12:39:35 -07:00
auxdisplay
base firmware: use dev_printk when possible 2008-10-16 11:21:47 -07:00
block Merge commit 'origin' 2008-10-15 11:31:54 +11:00
bluetooth Merge git://git.kernel.org/pub/scm/linux/kernel/git/brodo/pcmcia-2.6 2008-10-13 14:12:40 -07:00
cdrom gdrom: change to use __blk_end_request() 2008-10-09 08:56:21 +02:00
char drivers/char/tpm/tpm.c: fix error-path memory leak 2008-10-16 11:21:49 -07:00
clocksource
connector
cpufreq [CPUFREQ] Fix BUG: using smp_processor_id() in preemptible code 2008-10-09 13:52:44 -04:00
cpuidle
crypto
dca
dio
dma dw_dmac: fix copy/paste bug in tasklet 2008-10-03 18:22:18 -07:00
edac edac i5000: fix thermal issues 2008-10-16 11:21:48 -07:00
eisa
firewire
firmware
gpio gpiolib: request/free hooks 2008-10-16 11:21:40 -07:00
gpu misc: replace __FUNCTION__ with __func__ 2008-10-16 11:21:30 -07:00
hid HID: build drivers for all quirky devices by default 2008-10-14 23:51:05 +02:00
hwmon Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc 2008-10-15 08:07:35 -07:00
i2c Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc 2008-10-15 08:07:35 -07:00
ide Kconfig: eliminate "def_bool n" constructs 2008-10-16 11:21:31 -07:00
ieee1394
infiniband vfs: Use const for kernel parser table 2008-10-13 10:10:37 -07:00
input omap drivers: switch to standard GPIO calls 2008-10-16 11:21:40 -07:00
isdn Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6 2008-10-14 10:28:49 -07:00
leds Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/torvalds/linux-2.6 2008-10-11 12:39:35 -07:00
lguest
macintosh
mca
md raid, fastboot: hide RAID autodetect option if MD is compiled as a module 2008-10-12 08:25:14 -07:00
media Merge branch 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-2.6 2008-10-13 14:03:59 -07:00
memstick memstick: change to use __blk_end_request() 2008-10-09 08:56:20 +02:00
message i2o: Fix 32/64bit DMA locking 2008-10-16 11:21:38 -07:00
mfd mfd: Fix warning in WM8350 2008-10-13 21:51:57 +01:00
misc AT91: atmel_pwm only available for certain AT91 processors 2008-10-16 11:21:32 -07:00
mmc Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6 2008-10-13 17:13:56 +01:00
mtd omap drivers: switch to standard GPIO calls 2008-10-16 11:21:40 -07:00
net Remove Andrew Morton's old email accounts 2008-10-16 11:21:32 -07:00
nubus nubus: fix mis-indented statement 2008-10-16 11:21:30 -07:00
of Merge commit 'gcl/gcl-next' 2008-10-14 10:11:27 +11:00
oprofile Merge branch 'linus' into oprofile-v2 2008-10-13 11:05:51 +02:00
parisc
parport parport: remove CVS keywords 2008-10-16 11:21:49 -07:00
pci Merge commit 'origin' 2008-10-15 11:31:54 +11:00
pcmcia Merge git://git.kernel.org/pub/scm/linux/kernel/git/brodo/pcmcia-2.6 2008-10-13 14:12:40 -07:00
pnp pnp: make the resource type an unsigned long 2008-10-16 11:21:45 -07:00
power olpc: olpc_battery.c sparse endian annotations 2008-10-16 11:21:30 -07:00
ps3
rapidio
regulator da903x: add regulator support for DA9030/DA9034 2008-10-13 21:51:57 +01:00
rtc rtc-ds1672 new style driver 2008-10-16 11:21:40 -07:00
s390 misc: replace __FUNCTION__ with __func__ 2008-10-16 11:21:30 -07:00
sbus
scsi m68k: Atari SCSI needs NVRAM 2008-10-14 10:23:27 -07:00
serial Merge commit 'origin' 2008-10-15 11:31:54 +11:00
sh
sn
spi spi: core and gpio expanders use subsys_init 2008-10-16 11:21:38 -07:00
ssb Merge git://git.kernel.org/pub/scm/linux/kernel/git/brodo/pcmcia-2.6 2008-10-13 14:12:40 -07:00
tc
telephony telephony: remove CVS keywords 2008-10-16 11:21:45 -07:00
thermal
uio
usb Merge git://git.kernel.org/pub/scm/linux/kernel/git/brodo/pcmcia-2.6 2008-10-13 14:12:40 -07:00
video fbcon_set_all_vcs: fix kernel crash when switching the rotated consoles 2008-10-16 11:21:45 -07:00
virtio
w1 W1: ds2490.c optimize ds_set_pullup 2008-10-16 11:21:51 -07:00
watchdog Merge git://git.kernel.org/pub/scm/linux/kernel/git/wim/linux-2.6-watchdog 2008-10-12 11:51:32 -07:00
xen xen: remove unused balloon.h 2008-10-03 10:04:10 +02:00
zorro
Kconfig
Makefile