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* 8250: fix possible deadlock between serial8250_handle_port() and ↵Jiri Kosina2007-04-241-2/+3
| | | | | | | | | | | | | | | | | | serial8250_interrupt() Commit 40b36daa introduced possibility that serial8250_backup_timeout() -> serial8250_handle_port() locks port.lock without disabling irqs, thus allowing deadlock against interrupt handler (port.lock is acquired in serial8250_interrupt()). Spotted by lockdep. Signed-off-by: Jiri Kosina <jkosina@suse.cz> Cc: Dave Jones <davej@codemonkey.org.uk> Cc: Russell King <rmk@arm.linux.org.uk> Cc: Alex Williamson <alex.williamson@hp.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* Char: icom, mark __init as __devinitJiri Slaby2007-04-241-2/+2
| | | | | | | | | Two functions are called from __devinit context, but they are marked as __init. Fix this. Signed-off-by: Jiri Slaby <jirislaby@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* do not truncate irq number for icom adapterOlaf Hering2007-04-242-4/+2
| | | | | | | | | | | irq values are u32, not u8. Large irq numbers will be truncated, free_irq may free a different irq. Remove incorrectly sized struct member and use the one from pci_dev. Signed-off-by: Olaf Hering <olaf@aepfle.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* Fix possible NULL pointer access in 8250 serial driverTaku Izumi2007-04-241-1/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | I encountered the following kernel panic. The cause of this problem was NULL pointer access in check_modem_status() in 8250.c. I confirmed this problem is fixed by the attached patch, but I don't know this is the correct fix. sadc[4378]: NaT consumption 2216203124768 [1] Modules linked in: binfmt_misc dm_mirror dm_mod thermal processor fan container button sg e100 eepro100 mii ehci_hcd ohci_hcd Pid: 4378, CPU 0, comm: sadc psr : 00001210085a2010 ifs : 8000000000000289 ip : [<a000000100482071>] Not tainted ip is at check_modem_status+0xf1/0x360 Call Trace: [<a000000100013940>] show_stack+0x40/0xa0 [<a0000001000145a0>] show_regs+0x840/0x880 [<a0000001000368e0>] die+0x1c0/0x2c0 [<a000000100036a30>] die_if_kernel+0x50/0x80 [<a000000100037c40>] ia64_fault+0x11e0/0x1300 [<a00000010000bdc0>] ia64_leave_kernel+0x0/0x280 [<a000000100482070>] check_modem_status+0xf0/0x360 [<a000000100482300>] serial8250_get_mctrl+0x20/0xa0 [<a000000100478170>] uart_read_proc+0x250/0x860 [<a0000001001c16d0>] proc_file_read+0x1d0/0x4c0 [<a0000001001394b0>] vfs_read+0x1b0/0x300 [<a000000100139cd0>] sys_read+0x70/0xe0 [<a00000010000bc20>] ia64_ret_from_syscall+0x0/0x20 [<a000000000010620>] __kernel_syscall_via_break+0x0/0x20 Fix the possible NULL pointer access in check_modem_status() in 8250.c. The check_modem_status() would access 'info' member of uart_port structure, but it is not initialized before uart_open() is called. The check_modem_status() can be called through /proc/tty/driver/serial before uart_open() is called. Signed-off-by: Kenji Kaneshige <kaneshige.kenji@jp.fujitsu.com> Signed-off-by: Taku Izumi <izumi2005@soft.fujitsu.com> Cc: Russell King <rmk@arm.linux.org.uk> Cc: <stable@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* [PATCH] add Fujitsu Siemens Tablet PC devices to 8250_pnp.cDanny Kukawka2007-03-231-0/+3
| | | | | | | | | Adds device ids of two Fujitsu Siemens Tablet PCs to pnp_dev_table Signed-off-by: Danny Kukawka <dkukawka@suse.de> Cc: Russell King <rmk@arm.linux.org.uk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* serial: Fix sh-sci break interrupt/sysrq handling.Paul Mundt2007-03-141-5/+6
| | | | | | | | | | | | The sh-sci sci_br_interrupt() handler was failing to call in to uart_handle_break(), which was something that only the SH-3 path was doing, fix that up. Additionally, SUPPORT_SYSRQ seems to have moved down too far, move it back to the top so uart_handle_break() and friends aren't no-ops. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
* [PATCH] 2.6 Altix: console fix for CONFIG_DEBUG_SHIRQ usagePat Gefre2007-03-081-35/+17
| | | | | | | | | | | | | The sn console driver was snagged by the use of CONFIG_DEBUG_SHIRQ! The request_irq() immediate call to the interrupt handler caused another attempt to lock the port lock - deadlock. This is a patch to fix that. Signed-off-by: Patrick Gefre <pfg@sgi.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* [PATCH] m68knommu: fix work queues in mcfserial.c driverGreg Ungerer2007-03-061-19/+14
| | | | | | | Fix work queue code to support new model. Signed-off-by: Greg Ungerer <gerg@uclinux.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* [PATCH] m68knommu: set GPIO lines for serial ports on 5282 in mcfserial.cGreg Ungerer2007-03-061-2/+9
| | | | | | | | | For the Freescale M5282 ColdFire, Port UA Pin Assignment Register should set to UART mode. Patch submitted by David Wu <davidwu@arcturusnetworks.com>. Signed-off-by: Greg Ungerer <gerg@uclinux.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* [PATCH] dz: remove struct pt_regs referencesMaciej W. Rozycki2007-03-051-4/+3
| | | | | | | | | Remove remaining references to saved registers now that uart_handle_sysrq_char() does not want them. Signed-off-by: Maciej W. Rozycki <macro@linux-mips.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* Merge master.kernel.org:/pub/scm/linux/kernel/git/kyle/parisc-2.6Linus Torvalds2007-02-261-35/+132
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * master.kernel.org:/pub/scm/linux/kernel/git/kyle/parisc-2.6: (78 commits) [PARISC] Use symbolic last syscall in __NR_Linux_syscalls [PARISC] Add missing statfs64 and fstatfs64 syscalls Revert "[PARISC] Optimize TLB flush on SMP systems" [PARISC] Compat signal fixes for 64-bit parisc [PARISC] Reorder syscalls to match unistd.h Revert "[PATCH] make kernel/signal.c:kill_proc_info() static" [PARISC] fix sys_rt_sigqueueinfo [PARISC] fix section mismatch warnings in harmony sound driver [PARISC] do not export get_register/set_register [PARISC] add ENTRY()/ENDPROC() and simplify assembly of HP/UX emulation code [PARISC] convert to use CONFIG_64BIT instead of __LP64__ [PARISC] use CONFIG_64BIT instead of __LP64__ [PARISC] add ASM_EXCEPTIONTABLE_ENTRY() macro [PARISC] more ENTRY(), ENDPROC(), END() conversions [PARISC] fix ENTRY() and ENDPROC() for 64bit-parisc [PARISC] Fixes /proc/cpuinfo cache output on B160L [PARISC] implement standard ENTRY(), END() and ENDPROC() [PARISC] kill ENTRY_SYS_CPUS [PARISC] clean up debugging printks in smp.c [PARISC] factor syscall_restart code out of do_signal ... Fix conflict in include/linux/sched.h due to kill_proc_info() being made publicly available to PARISC again.
| * Merge branch 'parisc' from /home/kyle/repos/parisc-2.6.gitKyle McMartin2007-02-171-35/+132
| |\ | | | | | | | | | | | | | | | | | | Conflicts: arch/parisc/hpux/sys_hpux.c arch/parisc/mm/ioremap.c
| | * [PARISC] [MUX] Get the hversion directly from the parisc_deviceRyan Bradetich2006-12-081-4/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Willy pointed out the hversion is already stored in the parisc_device, so I do not need to extract this information directly from the IODC data. Also by using the information in the parisc_device I can avoid re-reading the IODC data for the Muxes with specifed port counts. Signed-off-by: Ryan Bradetich <rbrad@parisc-linux.org> Signed-off-by: Kyle McMartin <kyle@parisc-linux.org>
| | * [PARISC] [MUX] Correctly report the number of available portsRyan Bradetich2006-12-081-11/+31
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch adds a new function to return the actual number of ports available. Some of the built-in Muxes return the number of supported ports, but not all of these port are available for use. Signed-off-by: Ryan Bradetich <rbrad@parisc-linux.org> Signed-off-by: Kyle McMartin <kyle@parisc-linux.org>
| | * [PARISC] [MUX] Detect multiple cards in the correct orderRyan Bradetich2006-12-081-8/+30
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch follows the example of the 8250_gsc driver by probing for specific built-in Mux cards first. This allows the system to preserve the correct detection order with multiple Mux cards. Signed-off-by: Ryan Bradetich <rbrad@parisc-linux.org> Signed-off-by: Kyle McMartin <kyle@parisc-linux.org>
| | * [PARISC] [MUX] Make the Serial Mux driver work as moduleRyan Bradetich2006-12-081-78/+57
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The following updates are based off a patch from willy: * Removal of the mux_card list. * Add the mux_remove function. Other updates: * Re-organize the driver structure a bit to make the mux_init and mux_exit functions more symmetrical. * Added the del_timer. * Unregistered the console. At this point I can insmod, rmmod, and re-insmod the mux without any failures. Signed-off-by: Ryan Bradetich <rbrad@parisc-linux.org> Signed-off-by: Kyle McMartin <kyle@parisc-linux.org>
| | * [PARISC] [MUX] Claim resources for the Mux driverRyan Bradetich2006-12-081-1/+60
| | | | | | | | | | | | | | | | | | | | | | | | This patch claims the iomem resources for the Mux driver. Signed-off-by: Ryan Bradetich <rbrad@parisc-linux.org> Signed-off-by: Kyle McMartin <kyle@parisc-linux.org>
| | * [PARISC] [MUX] Mux driver updatesRyan Bradetich2006-12-081-2/+11
| | | | | | | | | | | | | | | | | | | | | | | | | | | This patch changes the Mux console to use the Mux hardware instead of the PDC Software console. Signed-off-by: Ryan Bradetich <rbrad@parisc-linux.org> Signed-off-by: Kyle McMartin <kyle@parisc-linux.org>
| | * [PARISC] [MUX] Mux driver bug fixRyan Bradetich2006-12-081-10/+17
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch addresses the problems identified by Russell King in the following email: http://lists.parisc-linux.org/pipermail/parisc-linux/2005-December/027912.html Signed-off-by: Ryan Bradetich <rbrad@parisc-linux.org> Signed-off-by: Kyle McMartin <kyle@parisc-linux.org>
* | | [SERIAL] serial_txx9 driver updateAtsushi Nemoto2007-02-221-92/+184
| | | | | | | | | | | | | | | | | | | | | | | | | | | * Use platform_device. * Fix and cleanup suspend/resume/initialization codes. Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp> Acked-by: Alan Cox <alan@redhat.com> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* | | [PATCH] 8250: Fix GCC4 signed/unsigned mismatch warningThomas Koeller2007-02-201-1/+1
| | | | | | | | | | | | | | | | | | Signed-off-by: Thomas Koeller <thomas.koeller@baslerweb.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | | Merge branch 'for-linus' of master.kernel.org:/home/rmk/linux-2.6-armLinus Torvalds2007-02-193-9/+11
|\ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * 'for-linus' of master.kernel.org:/home/rmk/linux-2.6-arm: (117 commits) [ARM] 4058/2: iop32x: set ->broken_parity_status on n2100 onboard r8169 ports [ARM] 4140/1: AACI stability add ac97 timeout and retries [ARM] 4139/1: AACI record support [ARM] 4138/1: AACI: multiple channel support for IRQ handling [ARM] 4211/1: Provide a defconfig for ns9xxx [ARM] 4210/1: base for new machine type "NetSilicon NS9360" [ARM] 4222/1: S3C2443: Remove reference to missing S3C2443_PM [ARM] 4221/1: S3C2443: DMA support [ARM] 4220/1: S3C24XX: DMA system initialised from sysdev [ARM] 4219/1: S3C2443: DMA source definitions [ARM] 4218/1: S3C2412: fix CONFIG_CPU_S3C2412_ONLY wrt to S3C2443 [ARM] 4217/1: S3C24XX: remove the dma channel show at startup [ARM] 4090/2: avoid clash between PXA and SA1111 defines [ARM] 4216/1: add .gitignore entries for ARM specific files [ARM] 4214/2: S3C2410: Add Armzone QT2410 [ARM] 4215/1: s3c2410 usb device: per-platform vbus_draw [ARM] 4213/1: S3C2410 - Update definition of ADCTSC_XY_PST [ARM] 4098/1: ARM: rtc_lock only used with rtc_cmos [ARM] 4137/1: Add kexec support [ARM] 4201/1: SMP barriers pair needed for the secondary boot process ... Fix up conflict due to typedef removal in sound/arm/aaci.h
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| *-. | | Merge AT91, EP93xx, General devel, PXA, S3C, V6+ and Xscale treesRussell King2007-02-171-1/+2
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| | * | | [ARM] 4151/1: AT91 / AVR32: Move at91_pdc.h to linux/atmel_pdc.hAndrew Victor2007-02-081-1/+2
| | |/ / | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The Atmel AT91 and AVR32 processor architectures share many of the same peripherals. The PDC (Peripheral Data Controller) registers are also implemented within in a number of the on-chip peripherals (eg, USART, MMC, SPI, SSC, etc). In a attempt not to duplicate the register definitions in each peripheral, or in each architecture, the at91_pdc.h header in asm-arm/arch-at91 and asm-avr32/arch-at32ap has been replaced with linux/atmel_pdc.h. The definitions have also been renamed from AT91_PDC_* to ATMEL_PDC_*, and the drivers updated accordingly. Original patch from Nicolas Ferre. Signed-off-by: Andrew Victor <andrew@sanpeople.com> Acked-by: Haavard Skinnemoen <hskinnemoen@atmel.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
| * | | [ARM] amba-pl010: add reference to ep93xx to Kconfig help entryLennert Buytenhek2007-02-111-1/+2
| | | | | | | | | | | | | | | | | | | | | | | | Signed-off-by: Lennert Buytenhek <buytenh@wantstofly.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
| * | | [ARM] i.MX serial: fix IRQ allocationPavel Pisa2007-02-111-1/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | If RTS interrupt is caused by RTS senzing logic inside i.MX UART module the IRQ type cannot be set. It applies only for interrupts going through GPIO layer. The problem has been noticed by Konstantin Kletschke some time ago. No IRQF_TRIGGER set_type function for IRQ 26 (MPU) I would not change type to fixed 0, because it could be possible to use different GPIO MX1 pin for RTS in the theory. On the other hand it is only for documentation purposes now, because RTS read code would have to be adjusted in such case. Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
| * | | [ARM] i.MX serial: fix tx buffer overflowsSascha Hauer2007-02-111-6/+5
| |/ / | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Fix occasional tx buffer overflows in the i.MX serial driver which came from the fact that space in the buffer was checked after sending the first byte. Also, fifosize is 32 bytes, not 8. Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de Acked-by: Pavel Pisa <pisa@cmp.felk.cvut.cz> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* | | Merge git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpcLinus Torvalds2007-02-192-2/+4
|\ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc: (34 commits) [POWERPC] 86xx: Cleaned up platform dts files [POWERPC] 85xx: Renamed MPC8568 MDS board code to match other boards [POWERPC] 85xx: Cleaning up machine probing [POWERPC] QE: clean up ucc_slow.c and ucc_fast.c [POWERPC] 85xx: Cleaned up platform dts files [POWERPC] 83xx: Renamed MPC8323 MDS dts and defconfig to match other boards [POWERPC] 83xx: Updated and renamed MPC8360PB to MPC836x MDS [POWERPC] 83xx: Use of_platform_bus_probe to setup QE devices [POWERPC] 83xx: use default value of loops_per_jiffy [POWERPC] 83xx: Remove obsolete setting of ROOT_DEV. [POWERPC] 83xx: Cleaning up machine probing and board initcalls [POWERPC] Dispose irq mapping when done in mpc52xx_serial.c [POWERPC] 86xx: Add missing of_node_put() in mpc86xx_hpcn_init_irq(). [POWERPC] 8[56]xx: Remove obsolete setting of ROOT_DEV for 85xx and 86xx platforms. [POWERPC] pseries: Enabling auto poweron after power is restored. [POWERPC] use winbond libata instead of ide driver for pseries CD drives [POWERPC] powerpc: remove references to the obsolete linux,platform property [POWERPC] add of_get_mac_address and update fsl_soc.c to use it [POWERPC] 83xx: Cleaned up 83xx platform dts files [POWERPC] Fix bug with early ioremap and 64k pages ...
| * | | [POWERPC] Dispose irq mapping when done in mpc52xx_serial.cSylvain Munaut2007-02-171-1/+3
| | | | | | | | | | | | | | | | | | | | | | | | Signed-off-by: Sylvain Munaut <tnt@246tNt.com> Acked-by: Grant Likely <grant.likely@secretlab.ca> Signed-off-by: Paul Mackerras <paulus@samba.org>
| * | | [POWERPC] Fix compile failure in cpm_uart_cpm2Paul Gortmaker2007-02-161-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Fix bug that exists in kernel.org since 2.6.17rc4 - compiles fail if CONFIG_SERIAL_CPM_SMC is defined. Tested on a board using SMC1 console. Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
* | | | serial: Add PCMCIA IDs for Quatech DSP-100 dual RS232 adapter.Sergei Organov2007-02-161-0/+5
|/ / / | | | | | | | | | | | | | | | | | | | | | | | | Add PCMCIA IDs for Quatech DSP-100 dual RS232 adapter. Signed-off-by: Sergei Organov <osv@javad.com> Acked-by: Alan Cox <alan@redhat.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* | | [PATCH] remove many unneeded #includes of sched.hTim Schmielau2007-02-147-7/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | After Al Viro (finally) succeeded in removing the sched.h #include in module.h recently, it makes sense again to remove other superfluous sched.h includes. There are quite a lot of files which include it but don't actually need anything defined in there. Presumably these includes were once needed for macros that used to live in sched.h, but moved to other header files in the course of cleaning it up. To ease the pain, this time I did not fiddle with any header files and only removed #includes from .c-files, which tend to cause less trouble. Compile tested against 2.6.20-rc2 and 2.6.20-rc2-mm2 (with offsets) on alpha, arm, i386, ia64, mips, powerpc, and x86_64 with allnoconfig, defconfig, allmodconfig, and allyesconfig as well as a few randconfigs on x86_64 and all configs in arch/arm/configs on arm. I also checked that no new warnings were introduced by the patch (actually, some warnings are removed that were emitted by unnecessarily included header files). Signed-off-by: Tim Schmielau <tim@physik3.uni-rostock.de> Acked-by: Russell King <rmk+kernel@arm.linux.org.uk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | | [PATCH] PNX8550 UART driverVitaly Wool2007-02-143-0/+869
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add UART support for PNX8330/8550/8950 Philips MIPS-based SoCs. Signed-off-by: Vitaly Wool <vitalywool@gmail.com> Cc: Russell King <rmk@arm.linux.org.uk> Cc: Alan Cox <alan@lxorguk.ukuu.org.uk> 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>
* | | [PATCH] serial: replace kmalloc+memset with kzallocBurman Yan2007-02-1410-45/+18
| | | | | | | | | | | | | | | Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | | [PATCH] serial: make sure UART is powered up when dumping MCTRL statusGeorge G. Davis2007-02-141-0/+11
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Since serial devices are powered down when not in use and some of those devices cannot be accessed when powered down, we need to enable power around calls to get_mcrtl() when dumping port state via uart_line_info(). This resolves hangs observed on some machines while reading serial device registers when a port is powered off. Signed-off-by: George G. Davis <gdavis@mvista.com> Cc: Russell King <rmk@arm.linux.org.uk> Cc: Alan Cox <alan@lxorguk.ukuu.org.uk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | | [PATCH] serial: trivial code flow simplificationBjorn Helgaas2007-02-141-4/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Return failure immediately, so we don't have to test it twice. Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com> Cc: Adam Belay <ambx1@neo.rr.com> Cc: Russell King <rmk@arm.linux.org.uk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | | [PATCH] 8250 UART backup timerAlex Williamson2007-02-141-44/+134
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The patch below works around a minor bug found in the UART of the remote management card used in many HP ia64 and parisc servers (aka the Diva UARTs). The problem is that the UART does not reassert the THRE interrupt if it has been previously cleared and the IIR THRI bit is re-enabled. This can produce a very annoying failure mode when used as a serial console, allowing a boot/reboot to hang indefinitely until an RX interrupt kicks it into working again (ie. an unattended reboot could stall). To solve this problem, a backup timer is introduced that runs alongside the standard interrupt driven mechanism. This timer wakes up periodically, checks for a hang condition and gets characters moving again. This backup mechanism is only enabled if the UART is detected as having this problem, so systems without these UARTs will have no additional overhead. This version of the patch incorporates previous comments from Pavel and removes races in the bug detection code. The test is now done before the irq linking to prevent races with interrupt handler clearing the THRE interrupt. Short delays and syncs are also added to ensure the device is able to update register state before the result is tested. Aristeu says: this was tested on the following HP machines and solved the problem: rx2600, rx2620, rx1600 and rx1620s. hpa says: I have seen this same bug in soft UART IP from "a major vendor." Signed-off-by: Alex Williamson <alex.williamson@hp.com> Cc: "H. Peter Anvin" <hpa@zytor.com> Cc: Russell King <rmk@arm.linux.org.uk> Acked-by: Aristeu Sergio Rozanski Filho <aris@cathedrallabs.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | | [POWERPC] Open Firmware serial port driverArnd Bergmann2007-02-143-0/+154
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This can be used for serial ports that are connected to an OF platform bus but are not autodetected by the lecacy serial support. It will automatically take over devices that come from the legacy serial detection, which usually is only one device. In some cases, rtas may be set up to use the serial port in the firmware, which allows easier debugging before probing the serial ports. In this case, the "used-by-rtas" property must be set by the firmware. This patch also adds code to the legacy serial driver to check for this. Signed-off-by: Arnd Bergmann <arnd.bergmann@de.ibm.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
* | | [POWERPC] Fixup mp5200 drivers to match device tree changesGrant Likely2007-02-131-3/+2
| | | | | | | | | | | | | | | Signed-off-by: Grant Likely <grant.likely@secretlab.ca> Signed-off-by: Paul Mackerras <paulus@samba.org>
* | | [PATCH] atmel_serial: Use __raw I/O register accessHaavard Skinnemoen2007-02-121-27/+27
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Access to chip-internal registers should always be native-endian. This is especially important for AVR32 since it's a big-endian architecture and the non-raw readl() and writel() macros are defined to do little-endian accesses. Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com> Acked-by: Andrew Victor <andrew@sanpeople.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | | [PATCH] serial: support for new boardMatthias Fuchs2007-02-111-0/+11
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add support for the CPCI-ASIO4 quad port CompactPCI UART board from electronic system design gmbh. Signed-off-by: Matthias Fuchs <matthias.fuchs@esd-electronics.com> Cc: Russell King <rmk@arm.linux.org.uk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | | [PATCH] Perle multimodem card (PCI-RAS) detectionThomas Hoehn2007-02-112-2/+22
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Get the Perle quad-modem PCI card (PCI-RAS4) detected by serial driver. It may also get the PCI-RAS8 running, but can't guarantee as I didn't had one for testing. Signed-off-by: Thomas Hoehn <thomas.hoehn@avocent.com> Cc: Russell King <rmk@arm.linux.org.uk> Cc: Alan Cox <alan@lxorguk.ukuu.org.uk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | | [PATCH] serial: serial_txx9 driver updateAtsushi Nemoto2007-02-112-12/+16
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Update the serial_txx9 driver. * Configurable manumum port number. (SERIAL_TXX9_NR_UARTS) * Remove some code which is unneeded if CONFIG_PM=n. * Use PCI_DEVICE() for pci device id table and make it const. * Do not include <asm/irq.h> Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | | [PATCH] Char: tty_wakeup cleanupJiri Slaby2007-02-111-11/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | tty_wakeup cleanup - remove wake_up_interruptible(&tty->write_wait) surrounding tty_wakup(tty); - substitute tty->ldisc.write_wakeup(tty) + wake_up() by tty_wakeup(tty); Signed-off-by: Jiri Slaby <jirislaby@gmail.com> Cc: Alan Cox <alan@lxorguk.ukuu.org.uk> Acked-by: Tilman Schmidt <tilman@imap.cc> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | | [PATCH] IOC3/IOC4: PCI mem space resourcesBrent Casavant2007-02-111-3/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The SGI IOC3 and IOC4 PCI devices implement memory space apertures, not I/O space apertures. Use the appropriate region management functions. Signed-off-by: Brent Casavant <bcasavan@sgi.com> Cc: Pat Gefre <pfg@sgi.com> Cc: Stanislaw Skowronek <skylark@linux-mips.org> Cc: Brent Casavant <bcasavan@sgi.com> Acked-by: Ralf Baechle <ralf@linux-mips.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | | [PATCH] drivers/serial NULL noise removalAl Viro2007-02-091-3/+3
| | | | | | | | | | | | | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | | Merge branch 'linux-2.6'Paul Mackerras2007-02-074-4/+9
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| * | [ARM] Fix AMBA serial drivers for non-first serial portsRussell King2007-01-242-0/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | Using console=ttyAM1 or console=ttyAMA1 resulted in an oops during boot due to trying to drive the console before that port had been registered. Fix this by checking whether the port is present before allowing console setup to proceed. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
| * | [ARM] 4088/1: AT91: Unbalanced IRQ in serial driver suspend/resumeAndrew Victor2007-01-241-1/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch fixes the unbalanced calls to enable_irq_wake() and disable_irq_wake() in the AT91 (and AVR32) serial driver. It should resolve these kernel messages: Unbalanced IRQ x wake disable BUG: warning at kernel/irq/manage.c:167/set_irq_wake() Original patch from Marc Pignat. Signed-off-by: Andrew Victor <andrew@sanpeople.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
| * | [ARM] 4086/1: AT91: Whitespace cleanupAndrew Victor2007-01-242-3/+3
| | | | | | | | | | | | | | | | | | | | | A couple of whitespace cleanups, mainly in the AT91 header files. Signed-off-by: Andrew Victor <andrew@sanpeople.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
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