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2006-12-31[SPARC64]: Fix of_iounmap() region release.David S. Miller
We need to pass in the resource otherwise we cannot release the region properly. We must know whether it is an I/O or MEM resource. Spotted by Eric Brower. Signed-off-by: David S. Miller <davem@davemloft.net>
2006-12-22[PATCH] serial/uartlite: Only enable port if request_port succeededPeter Korsgaard
The uartlite driver used to always enable the port even if request_port failed causing havoc. This patch fixes it. Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-12-13[PATCH] Add support for Korenix 16C950-based PCI cardsRussell King
This adds initial support to 8250-pci for the Korenix Jetcard PCI serial cards. The JC12xx cards are standard RS232-based serial cards utilising the Oxford 16C950 device. The JC14xx are RS422/RS485-based cards, but in order for these to be supported natively, we will need additional tweaks to the 8250 layers so we can specify some values for the 950's registers. Hence, these two entries are commented out. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-12-12Merge git://git.kernel.org/pub/scm/linux/kernel/git/bunk/trivialLinus Torvalds
* git://git.kernel.org/pub/scm/linux/kernel/git/bunk/trivial: Fix inotify maintainers entry Fix typo in new debug options. Jon needs a new shift key. fs: Convert kmalloc() + memset() to kzalloc() in fs/. configfs.h: Remove dead macro definitions. kconfig: Standardize "depends" -> "depends on" in Kconfig files e100: replace kmalloc with kcalloc um: replace kmalloc+memset with kzalloc fix typo in net/ipv4/ip_fragment.c include/linux/compiler.h: reject gcc 3 < gcc 3.2 Kconfig: fix spelling error in config KALLSYMS help text Remove duplicate "have to" in comment Fix small typo in drivers/serial/icom.c Use consistent casing in help message EXT{2,3,4}_FS: remove outdated part of the help text
2006-12-12kconfig: Standardize "depends" -> "depends on" in Kconfig filesRobert P. J. Day
Standardize the miniscule percentage of occurrences of "depends" in Kconfig files to "depends on", and update kconfig-language.txt to reflect that. Signed-off-by: Robert P. J. Day <rpjday@mindspring.com> Signed-off-by: Adrian Bunk <bunk@stusta.de>
2006-12-12Fix small typo in drivers/serial/icom.cThomas Hisch
Signed-off-by: Thomas Hisch <t.hisch@gmail.com> Signed-off-by: Adrian Bunk <bunk@stusta.de>
2006-12-12sh: SH-MobileR SH7722 CPU support.Paul Mundt
This adds CPU support for the SH7722. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2006-12-12serial: sh-sci: Shut up various sci_rxd_in() gcc4 warnings.Paul Mundt
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2006-12-10[PATCH] Kconfig refactoring for better menu nestingDon Mullis
Refactor Kconfig content to maximize nesting of menus by menuconfig and xconfig. Tested by simultaneously running `make xconfig` with and without patch, and comparing displays. Signed-off-by: Don Mullis <dwm@meer.net> Signed-off-by: Randy Dunlap <rdunlap@xenotime.net> Cc: Sam Ravnborg <sam@ravnborg.org> Cc: Roman Zippel <zippel@linux-m68k.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-12-08[PATCH] tty: switch to ktermiosAlan Cox
This is the grungy swap all the occurrences in the right places patch that goes with the updates. At this point we have the same functionality as before (except that sgttyb() returns speeds not zero) and are ready to begin turning new stuff on providing nobody reports lots of bugs If you are a tty driver author converting an out of tree driver the only impact should be termios->ktermios name changes for the speed/property setting functions from your upper layers. If you are implementing your own TCGETS function before then your driver was broken already and its about to get a whole lot more painful for you so please fix it 8) Also fill in c_ispeed/ospeed on init for most devices, although the current code will do this for you anyway but I'd like eventually to lose that extra paranoia [akpm@osdl.org: bluetooth fix] [mp3@de.ibm.com: sclp fix] [mp3@de.ibm.com: warning fix for tty3270] [hugh@veritas.com: fix tty_ioctl powerpc build] [jdike@addtoit.com: uml: fix ->set_termios declaration] Signed-off-by: Alan Cox <alan@redhat.com> Signed-off-by: Martin Peschke <mp3@de.ibm.com> Acked-by: Peter Oberparleiter <oberpar@de.ibm.com> Cc: Cornelia Huck <cornelia.huck@de.ibm.com> Signed-off-by: Hugh Dickins <hugh@veritas.com> Signed-off-by: Jeff Dike <jdike@addtoit.com> Cc: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-12-07Merge branch 'for-linus' of master.kernel.org:/home/rmk/linux-2.6-armLinus Torvalds
* 'for-linus' of master.kernel.org:/home/rmk/linux-2.6-arm: (76 commits) [ARM] 4002/1: S3C24XX: leave parent IRQs unmasked [ARM] 4001/1: S3C24XX: shorten reboot time [ARM] 3983/2: remove unused argument to __bug() [ARM] 4000/1: Osiris: add third serial port in [ARM] 3999/1: RX3715: suspend to RAM support [ARM] 3998/1: VR1000: LED platform devices [ARM] 3995/1: iop13xx: add iop13xx support [ARM] 3968/1: iop13xx: add iop13xx_defconfig [ARM] Update mach-types [ARM] Allow gcc to optimise arm_add_memory a little more [ARM] 3991/1: i.MX/MX1 high resolution time source [ARM] 3990/1: i.MX/MX1 more precise PLL decode [ARM] 3986/1: H1940: suspend to RAM support [ARM] 3985/1: ixp4xx clocksource cleanup [ARM] 3984/1: ixp4xx/nslu2: Fix disk LED numbering (take 2) [ARM] 3994/1: ixp23xx: fix handling of pci master aborts [ARM] 3981/1: sched_clock for PXA2xx [ARM] 3980/1: extend the ARM Versatile sched_clock implementation from 32 to 63 bit [ARM] 3979/1: extend the SA11x0 sched_clock implementation from 32 to 63 bit period [ARM] 3978/1: macro to provide a 63-bit value from a 32-bit hardware counter ...
2006-12-07[PATCH] amba-pl010: clear error flags on rx errorLennert Buytenhek
The pl010 primecell documentation specifies that an error indicated via RSR should be cleared by a write to ECR. We didn't do this, which was causing errors to be re-reported on every call to pl010_rx_chars(). Doing a write to ECR once we detect an error appears to prevent the ep93xx console UART driver from going into a mode where it reports "ttyAM0: X input overrun(s)" every couple of keystrokes. Signed-off-by: Lennert Buytenhek <buytenh@wantstofly.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-12-07[PATCH] make 8250_pnp serial driver work after suspend to ramMike Galbraith
Add suspend/resume methods to drivers/serial/8250_pnp.c. Tested on a P4/HT 16550A box, ttyS0 login survives across suspend to ram. [akpm@osdl.org: cleanups] Signed-off-by: Mike Galbraith <efault@gmx.de> Cc: "Rafael J. Wysocki" <rjw@sisk.pl> Cc: Pavel Machek <pavel@ucw.cz> Cc: Russell King <rmk@arm.linux.org.uk> Cc: Adam Belay <ambx1@neo.rr.com> Cc: Bjorn Helgaas <bjorn.helgaas@hp.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-12-07[PATCH] dz: Fixes to make it workMaciej W. Rozycki
This a set of fixes mostly to make the driver actually work: 1. Actually select the line for setting parameters and receiver disable/enable. 2. Select the line for receive and transmit interrupt handling correctly. 3. Report the transmitter empty state correctly. 4. Set the I/O type of ports correctly. 5. Perform polled transmission correctly. 6. Don't fix the console line at ttyS3. 7. Magic SysRq support. 8. Various small bits here and there. Tested with a DECstation 2100 (thanks Flo for making this possible). [akpm@osdl.org: fix typo] Signed-off-by: Maciej W. Rozycki <macro@linux-mips.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-12-07[PATCH] Pass struct dev pointer to dma_cache_sync()Ralf Baechle
Pass struct dev pointer to dma_cache_sync() dma_cache_sync() is ill-designed in that it does not have a struct device pointer argument which makes proper support for systems that consist of a mix of coherent and non-coherent DMA devices hard. Change dma_cache_sync to take a struct device pointer as first argument and fix all its callers to pass it. Signed-off-by: Ralf Baechle <ralf@linux-mips.org> Cc: James Bottomley <James.Bottomley@steeleye.com> Cc: "David S. Miller" <davem@davemloft.net> Cc: Greg KH <greg@kroah.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-12-07[PATCH] Exar quad port serialPaul B Schroeder
This is on our "Envoy" boxes which we have, according to the documentation, an "Exar ST16C554/554D Quad UART with 16-byte Fifo's". The box also has two other "on-board" serial ports and a modem chip. The two on-board serial UARTs were being detected along with the first two Exar UARTs. The last two Exar UARTs were not showing up and neither was the modem. This patch was the only way I could the kernel to see beyond the standard four serial ports and get all four of the Exar UARTs to show up. [akpm@osdl.org: build fix] Signed-off-by: Paul B Schroeder <pschroeder@uplogix.com> Cc: Lennart Sorensen <lsorense@csclub.uwaterloo.ca> Acked-by: Alan Cox <alan@lxorguk.ukuu.org.uk> Cc: Russell King <rmk@arm.linux.org.uk> Cc: Greg KH <greg@kroah.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-12-07[PATCH] serial uartlite driverPeter Korsgaard
Add a driver for the Xilinx uartlite serial controller used in boards with the PPC405 core in the Xilinx V2P/V4 fpgas. The hardware is very simple (baudrate/start/stopbits fixed and no break support). See the datasheet for details: http://www.xilinx.com/bvdocs/ipcenter/data_sheet/opb_uartlite.pdf See http://thread.gmane.org/gmane.linux.serial/1237/ for the email thread. Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk> Acked-by: Olof Johansson <olof@lixom.net> Cc: Russell King <rmk@arm.linux.org.uk> Cc: Alan Cox <alan@lxorguk.ukuu.org.uk> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-12-06Merge master.kernel.org:/pub/scm/linux/kernel/git/lethal/sh-2.6Linus Torvalds
* master.kernel.org:/pub/scm/linux/kernel/git/lethal/sh-2.6: (43 commits) sh: sh775x/titan fixes for irq header changes. sh: update r7780rp defconfig. sh: compile fixes for header cleanup. sh: Fixup pte_mkhuge() build failure. sh: set KBUILD_IMAGE to something sensible. sh: show held locks in stack trace with lockdep. sh: platform_pata support for R7780RP sh: stacktrace/lockdep/irqflags tracing support. sh: Fixup movli.l/movco.l atomic ops for gcc4. sh: dyntick infrastructure. sh: Clock framework tidying. sh: Turn off IRQs around get_timer_offset() calls. sh: Get the PGD right in oops case with 64-bit PTEs. sh: Fix store queue bitmap end. sh: More flexible + SH7780 earlyprintk SCIF support. sh: Fixup various PAGE_SIZE == 4096 assumptions. sh: Fixup 4K irq stacks. sh: dma-api channel capability extensions. sh: Drop name overload in dma-sh. sh: Make dma-isa depend on ISA_DMA_API. ...
2006-12-06[PATCH] m68knommu: ColdFire serial driver fixesGreg Ungerer
Some updates for the old ColdFire serial driver: . support 3 and 4 UARTs on some ColdFire parts that have them . enable multifunction pins to serial for 527x CPU's . support the 5272 UART's fractional baud rate divisor . switch driver name to "mcfserial" Signed-off-by: Greg Ungerer <gerg@uclinux.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-12-06sh: Clock framework tidying.Paul Mundt
This syncs up the SH clock framework with the linux/clk.h API, for which there were only some minor changes required, namely the clk_get() dev_id and subsequent callsites. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2006-12-06sh: More flexible + SH7780 earlyprintk SCIF support.Paul Mundt
This makes the early printk support somewhat more flexible, moving the port definition to a config option, and making the port initialization configurable for sh-ipl+g users. At the same time, this allows us to trivially wire up the SH7780 SCIF0, so that's thrown in too more or less for free. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2006-12-06sh: Add support for SH7206 and SH7619 CPU subtypes.Yoshinori Sato
This implements initial support for the SH7206 (SH-2A) and SH7619 (SH-2) MMU-less CPUs. Signed-off-by: Yoshinori Sato <ysato@users.sourceforge.jp> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2006-12-05Merge master.kernel.org:/pub/scm/linux/kernel/git/brodo/pcmcia-2.6Linus Torvalds
* master.kernel.org:/pub/scm/linux/kernel/git/brodo/pcmcia-2.6: [PATCH] pcmcia: at91_cf update [PATCH] pcmcia: fix m32r_cfc.c compilation [PATCH] pcmcia: ds.c debug enhancements [PATCH] pcmcia: at91_cf update [PATCH] pcmcia: conf.ConfigBase and conf.Present consolidation [PATCH] pcmcia: remove prod_id indirection [PATCH] pcmcia: remove manf_id and card_id indirection [PATCH] pcmcia: IDs for Elan serial PCMCIA devcies [PATCH] pcmcia: allow for four multifunction subdevices [PATCH] pcmcia: handle __copy_from_user() return value in ioctl [PATCH] pcmcia: multifunction card handling fixes [PATCH] pcmcia: allow shared IRQs on pd6729 sockets [PATCH] pcmcia: start over after CIS override [PATCH] cm4000_cs: fix return value check [PATCH] pcmcia: yet another IDE ID [PATCH] pcmcia: Add an id to ide-cs.c
2006-12-04[PATCH] pcmcia: conf.ConfigBase and conf.Present consolidationDominik Brodowski
struct pcmcia_device *p_dev->conf.ConfigBase and .Present are set in almost all PCMICA driver right at the beginning, using the same calls but slightly different implementations. Unfiy this in the PCMCIA core. Includes a small bugfix ("drivers/net/pcmcia/xirc2ps_cs.c: remove unused label") from and Signed-off-by Adrian Bunk <bunk@stusta.de> Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>
2006-12-04[PATCH] pcmcia: remove manf_id and card_id indirectionDominik Brodowski
As we read out the manufactor and card_id from the PCMCIA device in the PCMCIA core, and device drivers can access those reliably in struct pcmcia_device's fields manf_id and card_id, remove additional (and partly broken) manf_id and card_id detection logic from PCMCIA device drivers. Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>
2006-12-04[PATCH] pcmcia: IDs for Elan serial PCMCIA devciesTony Olech
Add IDs for Elan serial PCMCIA devices. In addition, move the pdaudio_cf driver from matching based on manf_id and card_id to the more specific prod_id1 and prod_id2 to avoid false positives. Signed-off-by: Tony Olech <tony.olech@elandigitalsystems.com> Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>
2006-12-05[POWERPC] Add of_platform_bus support to mpc52xx psc uart driverGrant Likely
Needed to support mpc52xx boards in arch/powerpc. This patch retains the platform_bus support when compiling for arch/ppc, but uses the of_platform bindings for arch/powerpc. Signed-off-by: Grant Likely <grant.likely@secretlab.ca> Signed-off-by: Sylvain Munaut <tnt@246tNt.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
2006-12-05[POWERPC] typo fix and whitespace cleanup on mpc52xx-uart driverGrant Likely
Single typo fix and whitespace changes. In preparation for heavy changes to this driver when support for arch/powerpc is added. Since the driver will be changing significantly anyway, then may as well take the opportunity to clean it up first. Signed-off-by: Grant Likely <grant.likely@secretlab.ca> Signed-off-by: Sylvain Munaut <tnt@246tNt.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
2006-12-04[ARM] 3975/1: AT91: Comments in atmel_serial.hAndrew Victor
Updated some of the comments in the atmel_serial.h header detailing which bits are only available on the AT91RM9200 or the AT91SAM9xx processors. Signed-off-by: Andrew Victor <andrew@sanpeople.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2006-12-04[ARM] 3973/1: AT91: Serial driver compile fixAndrew Victor
1. The CPU identification has moved from <system.h> to <cpu.h>. 2. AT91RM9200_BASE_US0 is only defined if we are compiling in support for the AT91RM9200. Therefore we need to replace the CONFIG_ARM ifdef with CONFIG_ARCH_AT91RM9200 Signed-off-by: Andrew Victor <andrew@sanpeople.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2006-12-04[POWERPC] CPM_UART: Fix inconsistency of function definitionKalle Pokki
The below hunk was missed from the recent patch, and now, there are somewhat inconsistent definitions: in cpm_uart.h: int __init cpm_uart_init_portdesc(void); in cpm_uart_cpm1.c: int __init cpm_uart_init_portdesc(void) { } in cpm_uart_cpm2.c: int cpm_uart_init_portdesc(void) { } Signed-off-by: Kalle Pokki <kalle.pokki@iki.fi> Signed-off-by: Vitaly Bordug <vbordug@ru.mvista.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
2006-11-30[ARM] 3954/1: AT91: Update drivers for new headersAndrew Victor
This patch updates the drivers (and other files) which include the hardware headers. This fixes the breakage introduced in patches 3950/1 and 3951/1 (those patches were getting big). The AVR32 architecture uses the same serial driver and had its own copy of at91rm9200_pdc.h. Renamed it to at91_pdc.h Signed-off-by: Andrew Victor <andrew@sanpeople.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2006-11-30[ARM] 3947/1: AT91: cpu_is_XXX macro'sAndrew Victor
This patch replaces the arch_identify() in system.h with a set of cpu_is_XXX() macro's. This allows for compile-time checking of the target AT91 processor. Original patch from David Brownell. Signed-off-by: Andrew Victor <andrew@sanpeople.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2006-11-10[POWERPC] CPM_UART: Fix non-console initialisationKalle Pokki
The cpm_uart driver is initialised incorrectly, if there is a frame buffer console, and CONFIG_SERIAL_CPM_CONSOLE is defined. The driver fails to call cpm_uart_init_portdesc() and set_lineif() in this case. Signed-off-by: Kalle Pokki <kalle.pokki@iki.fi> Signed-off-by: Vitaly Bordug <vbordug@ru.mvista.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
2006-11-10[POWERPC] CPM_UART: Fix non-console transmitKalle Pokki
The SMC and SCC hardware transmitter is enabled at the wrong place. Simply writing twice to the non-console port, like $ echo asdf > /dev/ttyCPM1 $ echo asdf > /dev/ttyCPM1 puts the shell into endless uninterruptible sleep, since the transmitter is stopped after the first write, and is not enabled before the shutdown function of the second write. Thus the transmit buffers are never emptied. Signed-off-by: Kalle Pokki <kalle.pokki@iki.fi> Signed-off-by: Vitaly Bordug <vbordug@ru.mvista.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
2006-10-30[PATCH] ioc4_serial: irq flags fixAndrew Morton
Use the correct type for the CPU flags. Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-10-20[PATCH] Kconfig serial typosRandy Dunlap
Fix typo (repeated) in serial Kconfig. Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com> Cc: Russell King <rmk@arm.linux.org.uk> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-10-17[PATCH] ioc4: Enable build on non-SN2Brent Casavant
The SGI PCI-RT card, based on the SGI IOC4 chip, will be made available on Altix XE (x86_64) platforms in the near future. As such it is now a misnomer for the IOC4 base device driver to live under drivers/sn, and would complicate builds for non-SN2. This patch moves the IOC4 base driver code from drivers/sn to drivers/misc, and updates the associated Makefiles and Kconfig files to allow building on non-SN2 configs. Due to the resulting change in link order, it is now necessary to use late_initcall() for IOC4 subdriver initialization. [akpm@osdl.org: __udivdi3 fix] [akpm@osdl.org: fix default in Kconfig] Acked-by: Pat Gefre <pfg@sgi.com> Acked-by: Jeremy Higdon <jeremy@sgi.com> Signed-off-by: Brent Casavant <bcasavan@sgi.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-10-12Merge master.kernel.org:/pub/scm/linux/kernel/git/lethal/sh-2.6Linus Torvalds
* master.kernel.org:/pub/scm/linux/kernel/git/lethal/sh-2.6: sh: SH-4A UBC support sh: interrupt exception handling rework sh: Default enable R7780RP IRQs. sh: Zero-out coherent buffer in consistent_alloc(). sh: Convert IPR-IRQ to IRQ chip. sh: Convert INTC2 IRQ handler to irq_chip. sh: Fix pr_debug statements for sh4 sh: Convert r7780rp IRQ handler to IRQ chip. sh: Updates for IRQ handler changes. sh: Kill off timer_ops get_frequency(). sh: First step at generic timeofday support.
2006-10-11[SPARC32]: Fix sparc32 modpost warnings with sunzilogMartin Habets
Fix this 2.6.19-rc1 build warnings from modpost: WARNING: vmlinux - Section mismatch: reference to .init.text:sunzilog_console_setup from .data between 'sunzilog_console' (at offset 0x8394) and 'devices_subsys' Signed-off-by: Martin Habets <errandir_news@mph.eclipse.co.uk> Signed-off-by: David S. Miller <davem@davemloft.net>
2006-10-10[PATCH] __iomem annotations in sunzilogAl Viro
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Acked-by: David S. Miller <davem@davemloft.net> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-10-09Merge branch 'irqclean-submit1' of ↵Linus Torvalds
master.kernel.org:/pub/scm/linux/kernel/git/jgarzik/misc-2.6 * 'irqclean-submit1' of master.kernel.org:/pub/scm/linux/kernel/git/jgarzik/misc-2.6: drivers/isdn/act2000: kill irq2card_map drivers/net/eepro: kill dead code Various drivers' irq handlers: kill dead code, needless casts drivers/net: eliminate irq handler impossible checks, needless casts arch/i386/kernel/time: don't shadow 'irq' function arg
2006-10-07[PATCH] m32r pt_regs fixesAl Viro
... and now with irq_regs.h not forgotten... Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-10-06Build fixes for struct pt_regs removalMatthew Wilcox
Signed-off-by: Matthew Wilcox <matthew@wil.cx>
2006-10-06Merge branch 'submit1' of viper:/spare/repo/irq-remove-2.6 into irqcleanupsJeff Garzik
2006-10-06Various drivers' irq handlers: kill dead code, needless castsJeff Garzik
- Eliminate casts to/from void* - Eliminate checks for conditions that never occur. These typically fall into two classes: 1) Checking for 'dev_id == NULL', then it is never called with NULL as an argument. 2) Checking for invalid irq number, when the only caller (the system) guarantees the irq handler is called with the proper 'irq' number argument. Signed-off-by: Jeff Garzik <jeff@garzik.org>
2006-10-06[IA64] Fix breakage from irq changeTony Luck
A few missed spots in ia64-land from this gigantic commit: 7d12e780e003f93433d49ce78cfedf4b4c52adc5 Signed-off-by: Tony Luck <tony.luck@intel.com>
2006-10-06sh: Updates for IRQ handler changes.Paul Mundt
Trivial fixes for build breakage introduced by IRQ handler changes. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2006-10-05IRQ: Maintain regs pointer globally rather than passing to IRQ handlersDavid Howells
Maintain a per-CPU global "struct pt_regs *" variable which can be used instead of passing regs around manually through all ~1800 interrupt handlers in the Linux kernel. The regs pointer is used in few places, but it potentially costs both stack space and code to pass it around. On the FRV arch, removing the regs parameter from all the genirq function results in a 20% speed up of the IRQ exit path (ie: from leaving timer_interrupt() to leaving do_IRQ()). Where appropriate, an arch may override the generic storage facility and do something different with the variable. On FRV, for instance, the address is maintained in GR28 at all times inside the kernel as part of general exception handling. Having looked over the code, it appears that the parameter may be handed down through up to twenty or so layers of functions. Consider a USB character device attached to a USB hub, attached to a USB controller that posts its interrupts through a cascaded auxiliary interrupt controller. A character device driver may want to pass regs to the sysrq handler through the input layer which adds another few layers of parameter passing. I've build this code with allyesconfig for x86_64 and i386. I've runtested the main part of the code on FRV and i386, though I can't test most of the drivers. I've also done partial conversion for powerpc and MIPS - these at least compile with minimal configurations. This will affect all archs. Mostly the changes should be relatively easy. Take do_IRQ(), store the regs pointer at the beginning, saving the old one: struct pt_regs *old_regs = set_irq_regs(regs); And put the old one back at the end: set_irq_regs(old_regs); Don't pass regs through to generic_handle_irq() or __do_IRQ(). In timer_interrupt(), this sort of change will be necessary: - update_process_times(user_mode(regs)); - profile_tick(CPU_PROFILING, regs); + update_process_times(user_mode(get_irq_regs())); + profile_tick(CPU_PROFILING); I'd like to move update_process_times()'s use of get_irq_regs() into itself, except that i386, alone of the archs, uses something other than user_mode(). Some notes on the interrupt handling in the drivers: (*) input_dev() is now gone entirely. The regs pointer is no longer stored in the input_dev struct. (*) finish_unlinks() in drivers/usb/host/ohci-q.c needs checking. It does something different depending on whether it's been supplied with a regs pointer or not. (*) Various IRQ handler function pointers have been moved to type irq_handler_t. Signed-Off-By: David Howells <dhowells@redhat.com> (cherry picked from 1b16e7ac850969f38b375e511e3fa2f474a33867 commit)
2006-10-04[PATCH] atmel_serial: Fix roundoff error in atmel_console_get_optionsHaavard Skinnemoen
The atmel_console_get_options() function initializes the baud, parity and bits settings from the actual hardware setup, in case it has been initialized by a e.g. boot loader. The baud rate, however, is not necessarily exactly equal to one of the standard baud rates (115200, etc.) This means that the baud rate calculated by this function may be slightly higher or slightly lower than one of the standard baud rates. If the baud rate is slightly lower than the target, this causes problems when uart_set_option() tries to match the detected baud rate against the standard baud rate, as it will always select a baud rate that is lower or equal to the target rate. For example if the detected baud rate is slightly lower than 115200, usart_set_options() will select 57600. This patch fixes the problem by subtracting 1 from the value in BRGR when calculating the baud rate. The detected baud rate will thus always be higher than the nearest standard baud rate, and uart_set_options() will end up doing the right thing. Tested on ATSTK1000 and AT91RM9200-EK boards. Both are broken without this patch. Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com> Acked-by: Andrew Victor <andrew@sanpeople.com> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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