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2008-12-10Merge branch 'release' of ↵Linus Torvalds1-3/+3
git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux-2.6 * 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux-2.6: [IA64] SN: prevent IRQ retargetting in request_irq() [IA64] Fix section mismatch ioc3uart_init()/ioc3uart_submodule [IA64] Clear up section mismatch for ioc4_ide_attach_one. [IA64] Clear up section mismatch with arch_unregister_cpu() [IA64] Clear up section mismatch for sn_check_wars. [IA64] Updated the generic_defconfig to work with the 2.6.28-rc7 kernel. [IA64] Fix GRU compile error w/o CONFIG_HUGETLB_PAGE [IA64] eliminate NULL test and memset after alloc_bootmem [IA64] remove BUILD_BUG_ON from paravirt_getreg()
2008-12-10drivers/serial/s3c2440.c: fix typo in MODULE_LICENSEBalaji Rao1-1/+1
Signed-off-by: Balaji Rao <balajirrao@gmail.com> Acked-by: Ben Dooks <ben-linux@fluff.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-12-09[IA64] Fix section mismatch ioc3uart_init()/ioc3uart_submoduleTony Luck1-3/+3
s/ioc3uart_submodule/ioc3uart_ops/ makes the section mismatch check happy. Signed-off-by: Tony Luck <tony.luck@intel.com>
2008-12-06Fix incorrect use of loose in tty/serial driversNick Andrew1-2/+2
[Folded together as one diff from 3] It should be 'lose', not 'loose'. Signed-off-by: Nick Andrew <nick@nick-andrew.net> Signed-off-by: Alan Cox <alan@redhat.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-11-24Merge branch 'merge' of git://git.secretlab.ca/git/linux-2.6-mpc52xx into mergePaul Mackerras1-2/+2
2008-11-14powerpc/virtex: fix various format/casting printk mismatchesGrant Likely1-2/+2
Various printk format string in code used by the Xilinx Virtex platform are not 32-bit/64-bit safe. Add correct casting to fix the bugs. Reported-by: Josh Boyer <jwboyer@linux.vnet.ibm.com> Signed-off-by: Grant Likely <grant.likely@secretlab.ca> Acked-by: Josh Boyer <jwboyer@linux.vnet.ibm.com>
2008-11-13serial: sh-sci: Reorder the SCxTDR write after the TDxE clear.Paul Mundt1-1/+1
Under qemu there is a race between the TDxE read-and-clear and the SCxTDR write. While on hardware it can be gauranteed that the read-and-clear will happen prior to the character being written out, no such assumption can be made under emulation. As this path happens with IRQs off and the hardware itself doesn't care about the ordering, move the SCxTDR write until after the read-and-clear. Signed-off-by: Vladimir Prus <vladimir@codesourcery.com> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-11-12serial: sh-sci: fix cannot work SH7723 SCIFAYoshihiro Shimoda2-17/+19
SH7723 has SCIFA. This module is similer SCI register map, but it has FIFO. So this patch adds new type(PORT_SCIFA) and change some type checking. Signed-off-by: Yoshihiro Shimoda <shimoda.yoshihiro@renesas.com> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-11-07atmel_serial: keep clock off when it's not neededDavid Brownell1-3/+14
The atmel_serial driver is mismanaging its clock by leaving it on at all times ... the whole point of clock management is to leave it off unless it's actively needed, which conserves power!! Although the kernel doesn't actually hang without my fix, it does discard quite a lot of early console output. The result still looks correct: usart users= 1 on 35000000 Hz, for atmel_usart.0 usart users= 0 off 35000000 Hz, for atmel_usart.2 when using ttyS0 as serial console. [haavard.skinnemoen@atmel.com: Make sure clock is enabled early for console] Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: Haavard Skinnemoen <haavard.skinnemoen@atmel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-11-01Merge branch 'cris_move' of git://www.jni.nu/crisLinus Torvalds2-3/+3
* 'cris_move' of git://www.jni.nu/cris: [CRIS] Move header files from include to arch/cris/include. [CRISv32] Remove warning in io.h
2008-10-31Merge branch 'master' of ↵Paul Mundt2-4/+4
master.kernel.org:/pub/scm/linux/kernel/git/torvalds/linux-2.6
2008-10-31sh: Fix up the shared IRQ demuxer's control bit testing logic.Michael Trimarchi2-11/+13
Correct the interrupt handler in sh4 serial device, return the correct value and check for what is anabled in the SCSCR register. The sh7722 is broken just sending a break using minicom. Signed-off-by: Michael Trimarchi <trimarchimichael@yahoo.it> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-10-31Define SCSPTR1 for SH 7751RMatt Fleming1-0/+1
After the recent commit to kill off SCI/SCIF special casing SH 7751R fails to compile with CONFIG_SH_RTS7751R2D set. This is because SCSPTR1 is undefined. Take the value for SCSPTR1 from the SH7751R Group Hardware Manual. Signed-off-by: Matt Fleming <mjf@gentoo.org> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-10-31sh: Add sci_rxd_in of SH4-202Nobuhiro Iwamatsu1-2/+8
SH4-202 doesn't have SCSXX1. But it is treated so that there is SCSPTR1 in current code. This patch add sci_rxd_in of SH4-202. Signed-off-by: Nobuhiro Iwamatsu <iwamatsu.nobuhiro@renesas.com> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-10-31sh: Change register name SCSPTR to SCSPTR2Nobuhiro Iwamatsu1-1/+1
This change a name of SCSPTR used in sci_rxd_in of SH5-101. SCSPTR is not declared and will become the error. Signed-off-by: Nobuhiro Iwamatsu <iwamatsu.nobuhiro@renesas.com> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-10-30[ARM] build fixes for netX serial driverPaul Bolle2-4/+4
Make the netX serial driver tristate (as the help text implied). Make the serial driver build correctly if the netX serial console is disabled. Do not allow the netX serial console if the netX serial driver is build as a module. Signed-off-by: Paul Bolle <pebolle@tiscali.nl> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
2008-10-29[CRIS] Move header files from include to arch/cris/include.Jesper Nilsson2-3/+3
Change all users of header files to correct path. Remove some unneeded headers for arch-v32. Signed-off-by: Jesper Nilsson <jesper.nilsson@axis.com>
2008-10-28sh: Revert "SH 7366 needs SCIF_ONLY"Paul Mundt1-1/+0
This reverts commit 5ca8c4852fcbbc8a8497c4ee8b2a0a7466f3524c. With the killing off of SCIF_ONLY and its spawn in sh-sci, we no longer require this change, so just revert it. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-10-28Merge branches 'sh/serial-rework' and 'sh/oprofile'Paul Mundt2-83/+16
2008-10-28SH 7366 needs SCIF_ONLYKuninori Morimoto1-0/+1
SH 7366 has compile bug. because there is no SCIF_ONLY for SH 7366. this patch add it. Signed-off-by: Kuninori Morimoto <morimoto.kuninori@renesas.com> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-10-238250: Add more OxSemi devicesLee Howard1-2/+22
These have the Mainpine PCI identifier on however Additional paranoia check for Tornado versions added by Alan Cox (and this time I remembered to do an stg refresh so that the corrections ended up in these patches not randomly attached to another diff -- Alan) Signed-off-by: Lee Howard <lee.howard@mainpine.com> Signed-off-by: Alan Cox <alan@redhat.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-10-238250: Oxford Semiconductor DevicesLee Howard1-0/+211
Add support for the OxSemi 'Tornado' devices. Reformatted and reworked a bit by Alan Cox Signed-off-by: Lee Howard <lee.howard@mainpine.com> Signed-off-by: Alan Cox <alan@redhat.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-10-23Merge branch 'for-linus' of master.kernel.org:/home/rmk/linux-2.6-armLinus Torvalds1-1/+1
* 'for-linus' of master.kernel.org:/home/rmk/linux-2.6-arm: [ARM] clps711x: add sparsemem definitions [ARM] 5315/1: Fix section mismatch warning (sa1111) [ARM] Orion: activate workaround for 88f6183 SPI clock erratum [ARM] Orion: instantiate the dsa switch driver [ARM] mv78xx0: force link speed/duplex on eth2/eth3 [ARM] remove extra brace in arch/arm/mach-pxa/trizeps4.c [ARM] balance parenthesis in header file [ARM] pxa: fix trizeps PCMCIA build [ARM] pxa: fix trizeps defconfig [ARM] dmabounce requires ZONE_DMA [ARM] 5303/1: period_cycles should be greater than 1 [ARM] 5310/1: Fix cache flush functions for ARMv4 [ARM] pxa: fix 3bca103a1e658d23737d20e1989139d9ca8973bf [ARM] pxa: fix redefinition of NR_IRQS [ARM] S3C24XX: Fix redefine of DEFINE_TIMER() in s3c24xx pwm-clock.c [ARM] S3C2443: Fix HCLK rate [ARM] S3C24XX: Serial driver debug depends on DEBUG_LL [ARM] S3C24XX: pwm-clock set_parent mask fix
2008-10-21Merge branch 'genirq-v28-for-linus' of ↵Linus Torvalds10-31/+67
git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip This merges branches irq/genirq, irq/sparseirq-v4, timers/hpet-percpu and x86/uv. The sparseirq branch is just preliminary groundwork: no sparse IRQs are actually implemented by this tree anymore - just the new APIs are added while keeping the old way intact as well (the new APIs map 1:1 to irq_desc[]). The 'real' sparse IRQ support will then be a relatively small patch ontop of this - with a v2.6.29 merge target. * 'genirq-v28-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (178 commits) genirq: improve include files intr_remapping: fix typo io_apic: make irq_mis_count available on 64-bit too genirq: fix name space collisions of nr_irqs in arch/* genirq: fix name space collision of nr_irqs in autoprobe.c genirq: use iterators for irq_desc loops proc: fixup irq iterator genirq: add reverse iterator for irq_desc x86: move ack_bad_irq() to irq.c x86: unify show_interrupts() and proc helpers x86: cleanup show_interrupts genirq: cleanup the sparseirq modifications genirq: remove artifacts from sparseirq removal genirq: revert dynarray genirq: remove irq_to_desc_alloc genirq: remove sparse irq code genirq: use inline function for irq_to_desc genirq: consolidate nr_irqs and for_each_irq_desc() x86: remove sparse irq from Kconfig genirq: define nr_irqs for architectures with GENERIC_HARDIRQS=n ...
2008-10-20Merge git://git.kernel.org/pub/scm/linux/kernel/git/lethal/sh-2.6Linus Torvalds2-51/+62
* git://git.kernel.org/pub/scm/linux/kernel/git/lethal/sh-2.6: (112 commits) sh: Move SH-4 CPU headers down one more level. sh: Only build in gpio.o when CONFIG_GENERIC_GPIO is selected. sh: Migrate common board headers to mach-common/. sh: Move the CPU definition headers from asm/ to cpu/. serial: sh-sci: Add support SCIF of SH7723 video: add sh_mobile_lcdc platform flags video: remove unused sh_mobile_lcdc platform data sh: remove consistent alloc cruft sh: add dynamic crash base address support sh: reduce Migo-R smc91x overruns sh: Fix up some merge damage. Fix debugfs_create_file's error checking method for arch/sh/mm/ Fix debugfs_create_dir's error checking method for arch/sh/kernel/ sh: ap325rxa: Add support RTC RX-8564LC in AP325RXA board sh: Use sh7720 GPIO on magicpanelr2 board sh: Add sh7720 pinmux code sh: Use sh7203 GPIO on rsk7203 board sh: Add sh7203 pinmux code sh: Use sh7723 GPIO on AP325RXA board sh: Add sh7723 pinmux code ...
2008-10-20Altix serial: fixroel kluin1-1/+1
In function sn_sal_switch_to_asynch(): drivers/serial/sn_console.c:713: HZ * SN_SAL_UART_FIFO_DEPTH / SN_SAL_UART_FIFO_SPEED_CPS; After preprocessing (see defines in patch) this becomes HZ * 16 / 9600 / 10 (associativity from left to right), not equivalent to HZ * 16 / 960. Looks-obviously-right-to: Tony Luck <tony.luck@intel.com> Cc: Jes Sorensen <jes@sgi.com> Acked-by: Pat Gefre <pfg@sgi.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-10-20make probe_serial_gsc() staticAdrian Bunk1-1/+1
This patch makes the needlessly global probe_serial_gsc() static. Signed-off-by: Adrian Bunk <bunk@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-10-20serial_txx9: use %lx for iobaseAtsushi Nemoto1-1/+1
Fix a warning caused by commit 0c8946d97ae7d2d6691f8290a10faa63453b63f8 (serial: Make uart_port's ioport "unsigned long".) Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp> Cc: Alan Cox <alan@lxorguk.ukuu.org.uk> Cc: Josip Rodin <joy@entuzijast.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-10-20serial: sh-sci: Add support SCIF of SH7723Nobuhiro Iwamatsu1-1/+8
SH7723 has two types of SCIF (SCIF and SCIFA). The current sh-sci driver supports only SCIFA, and calculation methods of SCBRR are different. This patch support this methods. Signed-off-by: Nobuhiro Iwamatsu <iwamatsu.nobuhiro@renesas.com> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-10-20Merge branch 'master' of ↵Paul Mundt28-2554/+415
git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6 Conflicts: Documentation/kernel-parameters.txt arch/sh/include/asm/elf.h
2008-10-17Merge branch 'for-rmk-fixes' of git://aeryn.fluff.org.uk/bjdooks/linuxRussell King1-1/+1
2008-10-16Merge branch 'for-linus' of master.kernel.org:/home/rmk/linux-2.6-armLinus Torvalds6-13/+20
* 'for-linus' of master.kernel.org:/home/rmk/linux-2.6-arm: (51 commits) [ARM] 5308/1: Fix Viper ISA IRQ handling [ARM] 5307/1: pxa: fix CM-X2XX PCMCIA build error [ARM] 5306/1: pxa: fix build error on CM-X270 [ARM] 5302/1: ARM: OMAP: Revert omap3 WDT changes to avoid merge conflict [ARM] 5305/1: ARM: OMAP: Fix compile of McBSP by removing unnecessary check [ARM] 5301/1: ARM: OMAP: Add missing irq defines ARM: OMAP3: Add default kernel config for OMAP LDP ARM: OMAP3: Add basic board support for OMAP LDP ARM: OMAP3: Defconfig for the Gumstix Overo board (rev 3) ARM: OMAP3: Add support for the Gumstix Overo board (rev 3) ARM: OMAP3: Add Beagle defconfig ARM: OMAP3: Add minimal Beagle board support ARM: OMAP3: Add minimal omap3430 support ARM: OMAP2: Fix sparse, checkpatch warnings in OMAP2/3 IRQ code ARM: OMAP: Fixes to omap_mcbsp_request function ARM: OMAP: Add support for OMAP2430 in McBSP ARM: OMAP: Add support for McBSP devices 3 - 5 on 34xx ARM: OMAP: Allocate McBSP devices dynamically Fix sections for omap-mcbsp platform driver [ARM] S3C24XX: Additional include moves ...
2008-10-16[ARM] S3C24XX: Serial driver debug depends on DEBUG_LLBen Dooks1-1/+1
The SERIAL_SAMSUNG_DEBUG used printascii() to avoid debugging through itself when selected as a console. Disable this option when DEBUG_LL is not set (printascii is unavailable). Signed-off-by: Ben Dooks <ben-linux@fluff.org>
2008-10-16drivers/serial: use nr_irqsYinghai Lu9-10/+10
Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-10-16serial, 8250: remove NR_IRQ usageAlan Cox2-21/+57
Works on my test box with a quick test. Signed-off-by: Alan Cox <alan@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-10-16Merge branch 'fixes' into for-linusRussell King14-2293/+285
Conflicts: arch/arm/mach-versatile/core.c
2008-10-15Merge commit 'origin'Benjamin Herrenschmidt18-2317/+383
Manual fixup of conflicts on: arch/powerpc/include/asm/dcr-regs.h drivers/net/ibm_newemac/core.h
2008-10-15Merge branch 's3c-move' into develRussell King6-18/+24
Conflicts: arch/arm/mach-versatile/core.c
2008-10-15Merge branch 'omap-all' into develRussell King1-8/+15
Conflicts: arch/arm/mach-omap2/gpmc.c arch/arm/mach-omap2/irq.c
2008-10-148250: Fix lock warning (and possible crash)Alan Cox1-0/+3
Splitting the 8250 code back up to avoid a clash with the NR_IRQS removal patch introduced a last minute bug. Put back the additional needed lines for the old lock init Signed-off-by: Alan Cox <alan@redhat.com> [ Ingo also reports that this can cause a spontaneous reboot crash with certain configs, and sends in an identical patch ] Tested-by: Kamalesh Babulal <kamalesh@linux.vnet.ibm.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-10-14Merge git://git.kernel.org/pub/scm/linux/kernel/git/brodo/pcmcia-2.6Linus Torvalds1-173/+129
* git://git.kernel.org/pub/scm/linux/kernel/git/brodo/pcmcia-2.6: (49 commits) pcmcia: ioctl-internal definitions pcmcia: cistpl header cleanup pcmcia: remove unused argument to pcmcia_parse_tuple() pcmcia: card services header cleanup pcmcia: device_id header cleanup pcmcia: encapsulate ioaddr_t pcmcia: cleanup device driver header file pcmcia: cleanup socket services header file pcmcia: merge ds_internal.h into cs_internal.h pcmcia: cleanup cs_internal.h pcmcia: cs_internal.h is internal pcmcia: use dev_printk for cs_error() pcmcia: remove CS_ error codes alltogether pcmcia: deprecate CS_BAD_TUPLE pcmcia: deprecate CS_BAD_ARGS pcmcia: deprecate CS_BAD_BASE, CS_BAD_IRQ, CS_BAD_OFFSET and CS_BAD_SIZE pcmcia: deprecate CS_BAD_ATTRIBUTE, CS_BAD_TYPE and CS_BAD_PAGE pcmcia: deprecate CS_NO_MORE_ITEMS pcmcia: deprecate CS_IN_USE pcmcia: deprecate CS_CONFIGURATION_LOCKED ... Fix trivial conflict in drivers/pcmcia/ds.c manually
2008-10-13serial: fix device name reporting when minor space is shared between driversDavid S. Miller2-9/+20
The multiple drivers share the minor space occupied by a particular major number, the actual index within the device name's space is indicated by the tty_driver->name_base + uart_port->line Another usable formula is (uart_driver->minor - MINOR_BASE) + port->line Use those to print the device names properly in such situations in serial_core.c and 8250.c Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Alan Cox <alan@redhat.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-10-13tty: simplify ktermios allocationAlan Cox1-3/+0
Copy the simplification from the pty unix98 special case to the generic one. This allows us to kill off driver->termios_locked entirely which is nice. We have to whack bits of the cris driver as it meddles in places it shouldn't providing its own arrays that were never used anyway. Signed-off-by: Alan Cox <alan@redhat.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-10-13serial: allow 8250 to be used on sparcDavid Miller3-10/+27
This requires three changes: 1) Remove !SPARC restriction in Kconfig. 2) Move Sparc specific serial drivers before 8250, so that serial console devices don't change names on us, even if 8250 finds devices. 3) Since the Sparc specific serial drivers try to use the same major/minor device namespace as 8250, some coordination is necessary. Use the sunserial_*() layer routines to allocate minor number space within TTY_MAJOR when CONFIG_SPARC. This has no effect on other platforms. Thanks to Josip Rodin for bringing up this issue and testing plus debugging various revisions of this patch. Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Alan Cox <alan@redhat.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-10-138250: remove a few inlines of dubious valueWill Newton1-5/+4
Remove some inlines from various functions that are called once, are too big to inline, or are called only from slow path code. This saves around 300 bytes of code for me. Signed-off-by: Will Newton <will.newton@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Alan Cox <alan@redhat.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-10-13serial_8250: pci_enable_device fail is not fully handledAlan Cox1-2/+2
<rmk> talking about leaks - I noticed that the 'check return of pci_enable_dev()' in the 8250 pci resume function finally made it in despite my objections against it (causing stuff in higher levels to leak). Signed-off-by: Alan Cox <alan@redhat.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-10-13serial-make-uart_ports-ioport-unsigned-long-fixAndrew Morton1-3/+2
Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Alan Cox <alan@redhat.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-10-13Blackfin Serial Driver: Fix bug - request UART2/3 peripheral mapped ↵Sonic Zhang1-0/+50
interrupts in PIO mode Signed-off-by: Sonic Zhang <sonic.zhang@analog.com> Signed-off-by: Bryan Wu <cooloney@kernel.org> Signed-off-by: Alan Cox <alan@redhat.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-10-13Blackfin Serial Driver: Fix bug - ircp fails on sir over Blackfin UARTGraf Yang1-0/+4
We now use the sir_dev/irtty_sir/uart/bfin_serial drivers framework to monitor the TX status. Signed-off-by: Graf Yang <graf.yang@analog.com> Signed-off-by: Bryan Wu <cooloney@kernel.org> Signed-off-by: Alan Cox <alan@redhat.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-10-13Blackfin Serial Driver: Fix bug - Don't call tx_stop in tx_transfer.Sonic Zhang1-1/+5
Disable irq and return immediately. Signed-off-by: Sonic Zhang <sonic.zhang@analog.com> Signed-off-by: Bryan Wu <cooloney@kernel.org> Signed-off-by: Alan Cox <alan@redhat.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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