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linux-2.6
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linux-2.6/drivers
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Bjorn Helgaas 9626f1f117 rtc: fall back to requesting only the ports we actually use 
Firmware like PNPBIOS or ACPI can report the address space consumed by the
RTC.  The actual space consumed may be less than the size (RTC_IO_EXTENT)
assumed by the RTC driver.

The PNP core doesn't request resources yet, but I'd like to make it do so.
If/when it does, the RTC_IO_EXTENT request may fail, which prevents the RTC
driver from loading.

Since we only use the RTC index and data registers at RTC_PORT(0) and
RTC_PORT(1), we can fall back to requesting just enough space for those.

If the PNP core requests resources, this results in typical I/O port usage
like this:

    0070-0073 : 00:06		<-- PNP device 00:06 responds to 70-73
      0070-0071 : rtc		<-- RTC driver uses only 70-71

instead of the current:

    0070-0077 : rtc		<-- RTC_IO_EXTENT == 8

Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com>
Cc: Alessandro Zummo <a.zummo@towertech.it>
Cc: David Brownell <david-b@pacbell.net>
Cc: Ralf Baechle <ralf@linux-mips.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 		2007-11-14 18:45:41 -08:00
..
acorn/char unicode diacritics support 2007-10-17 08:42:52 -07:00
acpi acpi: make ACPI_PROCFS default to y 2007-11-14 18:45:39 -08:00
amba
…
ata libata: Don't fail device revalidation for bad _GTF methods 2007-11-10 00:31:27 -05:00
atm Eliminate pointless casts from void* in a few driver irq handlers. 2007-10-23 19:53:16 -04:00
auxdisplay
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base cleanup asm/scatterlist.h includes 2007-11-02 08:47:06 +01:00
block paride: pf driver fixes 2007-11-14 18:45:39 -08:00
bluetooth [Bluetooth] Add generic driver for Bluetooth USB devices 2007-10-22 02:59:46 -07:00
cdrom SG: audit of drivers that use blk_rq_map_sg() 2007-10-24 13:21:21 +02:00
char rtc: fall back to requesting only the ports we actually use 2007-11-14 18:45:41 -08:00
clocksource
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connector [CONNECTOR]: Fix a spurious kfree_skb() call 2007-10-30 21:29:47 -07:00
cpufreq
…
cpuidle cpuidle: remove unused exports 2007-10-29 17:27:50 -04:00
crypto [CRYPTO] users: Fix up scatterlist conversion errors 2007-10-27 00:52:07 -07:00
dca I/OAT: Add DCA services 2007-10-16 09:43:09 -07:00
dio
…
dma I/OAT: Add support for version 2 of ioatdma device 2007-11-14 18:45:41 -08:00
edac NULL terminate the pci_device_ids in pasemi_edac 2007-10-19 11:53:56 -07:00
eisa signedness: module_param_array nump argument 2007-10-14 12:41:52 -07:00
firewire firewire: fw-sbp2: fix refcounting 2007-11-07 01:59:28 +01:00
firmware define global BIT macro 2007-10-19 11:53:42 -07:00
hid HID: Don't access input_dev->private directly 2007-10-31 13:30:35 +01:00
hwmon hwmon: (i5k_amb) Convert macros to C functions 2007-11-08 08:42:47 -05:00
i2c typo fixes 2007-10-20 01:34:40 +02:00
ide ide: remove stale/incorrect comment from setup-pci.c 2007-11-13 22:09:16 +01:00
ieee1394 ieee1394: iso and async streams: s/g list fix 2007-11-04 14:31:16 +01:00
infiniband Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/roland/infiniband 2007-10-30 15:26:56 -07:00
input Use i8253.c lock for PC speaker on MIPS, too. 2007-11-02 19:39:18 -07:00
isdn i4l: errors with assignments in if 2007-11-05 15:12:31 -08:00
kvm KVM: SVM: Intercept the 'invd' and 'wbinvd' instructions 2007-11-08 12:05:45 +02:00
leds leds: bugfixes for leds-gpio 2007-11-05 21:54:41 +00:00
lguest lguest_user.c: fix memory leak 2007-11-14 18:45:38 -08:00
macintosh [POWERPC] windfarm: Fix windfarm thread freezer interaction 2007-11-08 14:15:34 +11:00
mca
…
md raid5: fix unending write sequence 2007-11-14 18:45:39 -08:00
media V4L/DVB (6548): pvrusb2: Fix oops on module removal 2007-11-04 21:41:30 -02:00
message i2o: debug messages corrected 2007-11-05 15:12:31 -08:00
mfd typo fixes 2007-10-20 01:34:40 +02:00
misc drivers/misc: Move misplaced pci_dev_put's 2007-11-14 18:45:39 -08:00
mmc Add missing "\n" to log message 2007-11-10 11:59:49 +01:00
mtd Eliminate pointless casts from void* in a few driver irq handlers. 2007-10-23 19:53:16 -04:00
net [NET]: Move unneeded data to initdata section. 2007-11-13 03:23:50 -08:00
nubus
…
of [SPARC/64]: Consolidate of_register_driver 2007-10-17 21:17:42 -07:00
oprofile oProfile: oops when profile_pc() returns ~0LU 2007-11-14 18:45:37 -08:00
parisc parisc: fix sg_page() fallout 2007-10-23 09:49:31 +02:00
parport [PARPORT] Remove unused 'irq' argument from parport irq functions 2007-10-23 19:53:16 -04:00
pci PCI: Add Kconfig option to disable deprecated pci_find_* API 2007-11-05 13:35:17 -08:00
pcmcia remove asm/bitops.h includes 2007-10-19 11:53:41 -07:00
pnp PNP: add debug message for adding new device 2007-10-17 08:43:04 -07:00
power Merge git://git.infradead.org/battery-2.6 2007-10-22 19:20:52 -07:00
ps3 remove asm/bitops.h includes 2007-10-19 11:53:41 -07:00
rapidio
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rtc rtc-ds1307 exports NVRAM 2007-11-14 18:45:36 -08:00
s390 [S390] Fix priority mistakes in drivers/s390/cio/cmf.c 2007-11-05 11:10:17 +01:00
sbus vfc_dev conversion to mutex: fallout 2007-10-20 15:04:06 -07:00
scsi PCI: Add Kconfig option to disable deprecated pci_find_* API 2007-11-05 13:35:17 -08:00
serial atmel_serial build warnings begone 2007-11-14 18:45:39 -08:00
sh superhyway: Handle device_register() retval properly. 2007-11-07 11:13:55 +09:00
sn
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spi spi: fix error paths on txx9spi_probe 2007-11-14 18:45:39 -08:00
ssb ssb: Fix PCMCIA-host lowlevel bus access 2007-11-10 22:01:53 -08:00
tc lk201: remove obsolete driver 2007-10-17 08:42:57 -07:00
telephony telephony: phonedev panics if unregistering device not registered [Bug 9266] 2007-11-05 15:12:33 -08:00
uio
…
usb cleanup asm/scatterlist.h includes 2007-11-02 08:47:06 +01:00
video video/sis/: fix negative array index 2007-11-14 18:45:38 -08:00
virtio virtio: Force use of power-of-two for descriptor ring sizes 2007-11-12 13:59:40 +11:00
w1 W1: fix memset size error 2007-11-14 18:45:36 -08:00
watchdog Merge git://git.kernel.org/pub/scm/linux/kernel/git/wim/linux-2.6-watchdog 2007-11-02 19:36:26 -07:00
xen Add missing newlines to some uses of dev_<level> messages 2007-10-18 14:37:28 -07:00
zorro Convert files to UTF-8 and some cleanups 2007-10-19 23:21:04 +02:00
Kconfig Virtio interface 2007-10-23 15:49:54 +10:00
Makefile Merge master.kernel.org:/pub/scm/linux/kernel/git/jejb/scsi-misc-2.6 2007-10-23 16:37:29 -07:00