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path: root/drivers/serial/sunsu.c
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* sparc: Annotate of_device_id arrays with const or __initdata.David S. Miller2008-08-31
| | | | | | As suggested by Stephen Rothwell. Signed-off-by: David S. Miller <davem@davemloft.net>
* sparc/drivers: use linux/of_device.h instead of asm/of_device.hStephen Rothwell2008-08-11
| | | | | Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: David S. Miller <davem@davemloft.net>
* ttydev: fix pamc_zilog for tty pointer moveStephen Rothwell2008-07-20
| | | | | | | | | | | | | | | | | Today's linux-next build (sparc64 defconfig) failed like this: drivers/serial/sunhv.c: In function `receive_chars': drivers/serial/sunhv.c:188: error: structure has no member named `tty' drivers/serial/sunsu.c: In function `receive_chars': drivers/serial/sunsu.c:314: error: structure has no member named `tty' drivers/serial/sunsab.c: In function `receive_chars': drivers/serial/sunsab.c:121: error: structure has no member named `tty' I applied the following patch (which, again, may not be correct). Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Alan Cox <alan@redhat.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* drivers/serial/: remove CVS keywordsAdrian Bunk2008-07-20
| | | | | | | | | | | | | This patch removes CVS keywords that weren't updated for a long time in comments, printk's and MODULE_DESCRIPTION's (no printk's or MODULE_DESCRIPTION's are completely removed). While doing this I also found and fixed a missing \n in a printk in m32r_sio.c Signed-off-by: Adrian Bunk <bunk@kernel.org> Signed-off-by: Alan Cox <alan@redhat.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* serial: Fix sparc driver name strings.David S. Miller2008-05-02
| | | | | | | | | | | | | | | | | | | They were all "serial" so if multiple of these drivers registered, we'd trigger sysfs directory creation errors: [ 1.695793] proc_dir_entry 'serial' already registered [ 1.695839] Call Trace: [ 1.831891] [00000000004f2534] create_proc_entry+0x7c/0x98 [ 1.833608] [00000000004f3a58] proc_tty_register_driver+0x40/0x70 [ 1.833663] [0000000000594700] tty_register_driver+0x1fc/0x208 [ 1.835371] [00000000005aade4] uart_register_driver+0x134/0x16c [ 1.841762] [00000000005ac274] sunserial_register_minors+0x34/0x68 [ 1.841818] [00000000007db2a4] sunsu_init+0xf8/0x150 [ 1.867697] [00000000007c62a4] kernel_init+0x190/0x330 [ 1.939147] [0000000000426cf8] kernel_thread+0x38/0x48 [ 1.939198] [00000000006a0d90] rest_init+0x18/0x5c Signed-off-by: David S. Miller <davem@davemloft.net>
* [SERIAL] sparc: Infrastructure to fix section mismatch bugs.Martin Habets2007-12-12
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch against 2.6.23 sparc-2.6.git contains a number of minor cleanups of the sparc serial drivers. Initially I fixed this build warning: WARNING: vmlinux.o(.text+0x107a2c): Section mismatch: reference to .init.text:add_preferred_console (between 'sunserial_console_match' and 'sunserial_console_termios') which is done by declaring sunserial_console_match() as __init. This resulted in build warnings on sunserial_current_minor. To resolve these the variable was changed so it is no longer global, and to hide operations on it inside 2 new functions. These functions handle the UART minor handling code that is common to all sparc serial drivers. These changes allowed to clean up the uart counters in all the sparc serial drivers, and the administration of minor device numbers. Lastly, sunserial_console_termios() does not need to be exported since it is only called from non-modular code. Sadly, the following build warning still exists: WARNING: vmlinux.o(__ksymtab+0x2910): Section mismatch: reference to .init.text:sunserial_console_match (between '__ksymtab_sunserial_console_match' and '__ksymtab_sunserial_unregister_minors') This could be resolved by not exporting sunserial_console_match(), but this is not possible at the moment because it is being called from modular code. On the other hand, this is a bogus warning since it comes from a ksymtab section. Signed-off-by: Martin Habets <errandir_news@mph.eclipse.co.uk> Signed-off-by: David S. Miller <davem@davemloft.net>
* [SERIAL]: Fix 32-bit warnings in sunzilog.c and sunsu.cDavid S. Miller2007-08-26
| | | | | | | | | resource_size_t can be either a u64 or a u32, and we can't really know for sure, so when printing such a value out always use long-long printf formatting and cast the argument to that type. Signed-off-by: David S. Miller <davem@davemloft.net>
* [SPARC]: Fix serial console device detection.David S. Miller2007-07-20
| | | | | | | | | | | | | | | | | | | | | | | | | | The current scheme works on static interpretation of text names, which is wrong. The output-device setting, for example, must be resolved via an alias or similar to a full path name to the console device. Paths also contain an optional set of 'options', which starts with a colon at the end of the path. The option area is used to specify which of two serial ports ('a' or 'b') the path refers to when a device node drives multiple ports. 'a' is assumed if the option specification is missing. This was caught by the UltraSPARC-T1 simulator. The 'output-device' property was set to 'ttya' and we didn't pick upon the fact that this is an OBP alias set to '/virtual-devices/console'. Instead we saw it as the first serial console device, instead of the hypervisor console. The infrastructure is now there to take advantage of this to resolve the console correctly even in multi-head situations in fbcon too. Thanks to Greg Onufer for the bug report. Signed-off-by: David S. Miller <davem@davemloft.net>
* [SERIAL]: Fix console write locking in sparc drivers.David S. Miller2007-07-16
| | | | | | | Mirror the logic in 8250 for proper console write locking when SYSRQ is triggered or an OOPS is in progress. Signed-off-by: David S. Miller <davem@davemloft.net>
* [SERIAL] sunsu: Fix section mismatch warnings.David S. Miller2007-05-07
| | | | | | | Mark sunsu_console_setup() as __init and rename 'sunsu_cons' to 'sunsu_console' so that it matches modpost.c's whitelist. Signed-off-by: David S. Miller <davem@davemloft.net>
* [SPARC/64] constify of_get_property return: driversStephen Rothwell2007-04-26
| | | | | | | | The only unfortunate bit here is that the name field of struct map_info is not const, so for now we put a cast on the assignment of it. Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: David S. Miller <davem@davemloft.net>
* [PATCH] remove many unneeded #includes of sched.hTim Schmielau2007-02-14
| | | | | | | | | | | | | | | | | | | | | | | | 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>
* [SPARC64]: Fix of_iounmap() region release.David S. Miller2006-12-31
| | | | | | | | | | 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>
* [PATCH] tty: switch to ktermiosAlan Cox2006-12-08
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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>
* IRQ: Maintain regs pointer globally rather than passing to IRQ handlersDavid Howells2006-10-05
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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)
* [PATCH] ioremap balanced with iounmap for drivers/serial/sunsu.cAmol Lad2006-10-01
| | | | | | | | | | | ioremap must be balanced by an iounmap and failing to do so can result in a memory leak. Signed-off-by: Amol Lad <amol@verismonetworks.com> Cc: Alan Cox <alan@lxorguk.ukuu.org.uk> Cc: David S. Miller <davem@sunset.davemloft.net> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [SERIAL] sunsu: Report keyboard and mouse ports in kernel log.David S. Miller2006-07-14
| | | | | | Otherwise there is no explicit mention of these devices. Signed-off-by: David S. Miller <davem@davemloft.net>
* [SERIAL] sunsu: Handle keyboard and mouse ports directly.David S. Miller2006-07-13
| | | | | | | | | | | | | | | | The sunsu_ports[] array exists merely to be able to easily use an integer index to get at the proper serial console port struct. We size this only for real ports, not for the keyboard and mouse, and thus keyboard and mouse port registration would fail. Fix this by dynamically allocating the port struct for the keyboard and mouse, instead of using the sunsu_ports[] array. Signed-off-by: David S. Miller <davem@davemloft.net>
* [PATCH] irq-flags: serial: Use the new IRQF_ constantsThomas Gleixner2006-07-02
| | | | | | | | | | Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: Ingo Molnar <mingo@elte.hu> Cc: "David S. Miller" <davem@davemloft.net> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Russell King <rmk@arm.linux.org.uk> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* Merge master.kernel.org:/pub/scm/linux/kernel/git/davem/sparc-2.6Linus Torvalds2006-06-30
|\ | | | | | | | | | | | | | | * master.kernel.org:/pub/scm/linux/kernel/git/davem/sparc-2.6: [SPARC64]: Kill sun4v virtual device layer. [SERIAL] sunhv: Convert to of_driver layer. [SPARC64]: Mask out top 8-bits in physical address when building resources. [SERIAL] sunsu: Missing return statement in su_probe().
| * [SERIAL] sunsu: Missing return statement in su_probe().David S. Miller2006-06-30
| | | | | | | | | | | | | | If we have a keyboard/mouse port, don't drop through to calling sunsu_autoconfig(). Signed-off-by: David S. Miller <davem@davemloft.net>
* | Remove obsolete #include <linux/config.h>Jörn Engel2006-06-30
|/ | | | | Signed-off-by: Jörn Engel <joern@wohnheim.fh-wedel.de> Signed-off-by: Adrian Bunk <bunk@stusta.de>
* [SERIAL] sun{su,zilog}: Add missing MODULE_*() niceties.David S. Miller2006-06-29
| | | | Signed-off-by: David S. Miller <davem@davemloft.net>
* [SERIAL] sunsu: Convert to of_driver framework.David S. Miller2006-06-29
| | | | Signed-off-by: David S. Miller <davem@davemloft.net>
* [PATCH] devfs: Remove devfs support from the serial subsystemGreg Kroah-Hartman2006-06-26
| | | | | | Also fixes all serial drivers. Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* [SPARC64]: Use in-kernel PROM tree for EBUS and ISA.David S. Miller2006-06-24
| | | | Signed-off-by: David S. Miller <davem@davemloft.net>
* [SPARC]: Kill __irq_itoa().David S. Miller2006-06-20
| | | | | | | | | | | | | | | | | | This ugly hack was long overdue to die. It was a way to print out Sparc interrupts in a more freindly format, since IRQ numbers were arbitrary opaque 32-bit integers which vectored into PIL levels. These 32-bit integers were not necessarily in the 0-->NR_IRQS range, but the PILs they vectored to were. The idea now is that we will increase NR_IRQS a little bit and use a virtual<-->real IRQ number mapping scheme similar to PowerPC. That makes this IRQ printing hack irrelevant, and furthermore only a handful of drivers actually used __irq_itoa() making it even less useful. Signed-off-by: David S. Miller <davem@davemloft.net>
* [SUNSU]: Fix license.Andrew Morton2006-05-21
| | | | | | | FATAL: modpost: GPL-incompatible module sunsu uses the GPL-only symbol tty_insert_flip_string_flags Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* [PATCH] Typo fixesAlexey Dobriyan2006-03-28
| | | | | | | | Fix a lot of typos. Eyeballed by jmc@ in OpenBSD. Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] kill _INLINE_Adrian Bunk2006-03-23
| | | | | | | | | | | This patch removes all occurances of _INLINE_ in the kernel. With the exception of tty_flip.h, I've simply removed the inline's since gcc should know best which functions to be inlined. Signed-off-by: Adrian Bunk <bunk@stusta.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* Merge master.kernel.org:/home/rmk/linux-2.6-serialLinus Torvalds2006-03-22
|\ | | | | | | | | | | * master.kernel.org:/home/rmk/linux-2.6-serial: [SERIAL] Merge avlab serial board entries in parport_serial [SERIAL] kernel console should send CRLF not LFCR
| * [SERIAL] kernel console should send CRLF not LFCRRussell King2006-03-20
| | | | | | | | | | | | | | | | | | | | | | Glen Turner reported that writing LFCR rather than the more traditional CRLF causes issues with some terminals. Since this aflicts many serial drivers, extract the common code to a library function (uart_console_write) and arrange for each driver to supply a "putchar" function. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* | [SUNSU]: Fix missing spinlock initialization.David S. Miller2006-03-20
| | | | | | | | | | | | Caught by CONFIG_DEBUG_SPINLOCK. Signed-off-by: David S. Miller <davem@davemloft.net>
* | [SPARC] serial: Make sure sysfs nodes get named correctly.David S. Miller2006-03-20
| | | | | | | | | | | | | | | | | | | | | | | | | | Because we play this trick where we use ttyS? in increasing minor numbers for different sunfoo.c drivers, we have to inform the TTY layer of this. Do so by setting the tty->name_base appropriately. Probably there should be a generic way to do this in the serial core, but for now... Signed-off-by: David S. Miller <davem@davemloft.net>
* | [SPARC64]: Prevent registering wrong serial console.David S. Miller2006-03-20
|/ | | | | | | If the console is not for a particular Sun serial controller, set the drv->cons to NULL. Signed-off-by: David S. Miller <davem@davemloft.net>
* [SUNSU]: Fix locking error in sunsu_stop_rx().David S. Miller2006-02-28
| | | | | | | The caller takes the UART port lock, so we shouldn't try to take it again. Signed-off-by: David S. Miller <davem@davemloft.net>
* [SERIAL] uart_port iotype member should use UPIO_*Russell King2006-02-05
| | | | | | Convert usage of SERIAL_IO_* to UPIO_*. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* [SERIAL] Don't use ASYNC_ constants with the uart_port structureRussell King2006-01-21
| | | | Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* [PATCH] TTY layer buffering revampAlan Cox2006-01-10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The API and code have been through various bits of initial review by serial driver people but they definitely need to live somewhere for a while so the unconverted drivers can get knocked into shape, existing drivers that have been updated can be better tuned and bugs whacked out. This replaces the tty flip buffers with kmalloc objects in rings. In the normal situation for an IRQ driven serial port at typical speeds the behaviour is pretty much the same, two buffers end up allocated and the kernel cycles between them as before. When there are delays or at high speed we now behave far better as the buffer pool can grow a bit rather than lose characters. This also means that we can operate at higher speeds reliably. For drivers that receive characters in blocks (DMA based, USB and especially virtualisation) the layer allows a lot of driver specific code that works around the tty layer with private secondary queues to be removed. The IBM folks need this sort of layer, the smart serial port people do, the virtualisers do (because a virtualised tty typically operates at infinite speed rather than emulating 9600 baud). Finally many drivers had invalid and unsafe attempts to avoid buffer overflows by directly invoking tty methods extracted out of the innards of work queue structs. These are no longer needed and all go away. That fixes various random hangs with serial ports on overflow. The other change in here is to optimise the receive_room path that is used by some callers. It turns out that only one ldisc uses receive room except asa constant and it updates it far far less than the value is read. We thus make it a variable not a function call. I expect the code to contain bugs due to the size alone but I'll be watching and squashing them and feeding out new patches as it goes. Because the buffers now dynamically expand you should only run out of buffering when the kernel runs out of memory for real. That means a lot of the horrible hacks high performance drivers used to do just aren't needed any more. Description: tty_insert_flip_char is an old API and continues to work as before, as does tty_flip_buffer_push() [this is why many drivers dont need modification]. It does now also return the number of chars inserted There are also tty_buffer_request_room(tty, len) which asks for a buffer block of the length requested and returns the space found. This improves efficiency with hardware that knows how much to transfer. and tty_insert_flip_string_flags(tty, str, flags, len) to insert a string of characters and flags For a smart interface the usual code is len = tty_request_buffer_room(tty, amount_hardware_says); tty_insert_flip_string(tty, buffer_from_card, len); More description! At the moment tty buffers are attached directly to the tty. This is causing a lot of the problems related to tty layer locking, also problems at high speed and also with bursty data (such as occurs in virtualised environments) I'm working on ripping out the flip buffers and replacing them with a pool of dynamically allocated buffers. This allows both for old style "byte I/O" devices and also helps virtualisation and smart devices where large blocks of data suddenely materialise and need storing. So far so good. Lots of drivers reference tty->flip.*. Several of them also call directly and unsafely into function pointers it provides. This will all break. Most drivers can use tty_insert_flip_char which can be kept as an API but others need more. At the moment I've added the following interfaces, if people think more will be needed now is a good time to say int tty_buffer_request_room(tty, size) Try and ensure at least size bytes are available, returns actual room (may be zero). At the moment it just uses the flipbuf space but that will change. Repeated calls without characters being added are not cumulative. (ie if you call it with 1, 1, 1, and then 4 you'll have four characters of space. The other functions will also try and grow buffers in future but this will be a more efficient way when you know block sizes. int tty_insert_flip_char(tty, ch, flag) As before insert a character if there is room. Now returns 1 for success, 0 for failure. int tty_insert_flip_string(tty, str, len) Insert a block of non error characters. Returns the number inserted. int tty_prepare_flip_string(tty, strptr, len) Adjust the buffer to allow len characters to be added. Returns a buffer pointer in strptr and the length available. This allows for hardware that needs to use functions like insl or mencpy_fromio. Signed-off-by: Alan Cox <alan@redhat.com> Cc: Paul Fulghum <paulkf@microgate.com> Signed-off-by: Hirokazu Takata <takata@linux-m32r.org> Signed-off-by: Serge Hallyn <serue@us.ibm.com> Signed-off-by: Jeff Dike <jdike@addtoit.com> Signed-off-by: John Hawkes <hawkes@sgi.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com> Signed-off-by: Adrian Bunk <bunk@stusta.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [SUNSU]: Do not mark sunsu_console_setup() __initDavid S. Miller2005-11-07
| | | | | | Sets off buildcheck warnings. Signed-off-by: David S. Miller <davem@davemloft.net>
* [SUNSU]: Fix bogus locking in sunsu_change_mouse_baud()David S. Miller2005-10-03
| | | | | | | | | The lock is not held when calling this function, so we shouldn't drop then reacquire it. Based upon a report from Jim MacBaine. Signed-off-by: David S. Miller <davem@davemloft.net>
* [SUNSU]: Compile fixes.Al Viro2005-09-06
| | | | | | | sunsu had been broken by ->stop_tx/->start_tx API changes. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: David S. Miller <davem@davemloft.net>
* [SERIAL] Clean up and fix tty transmission start/stopingRussell King2005-08-31
| | | | | | | | | | | | | | | | | | | | | | | The start_tx and stop_tx methods were passed a flag to indicate whether the start/stop was from the tty start/stop callbacks, and some drivers used this flag to decide whether to ask the UART to immediately stop transmission (where the UART supports such a feature.) There are other cases when we wish this to occur - when CTS is lowered, or if we change from soft to hard flow control and CTS is inactive. In these cases, this flag was false, and we would allow the transmitter to drain before stopping. There is really only one case where we want to let the transmitter drain before disabling, and that's when we run out of characters to send. Hence, re-jig the start_tx and stop_tx methods to eliminate this flag, and introduce new functions for the special "disable and allow transmitter to drain" case. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* [PATCH] Serial: Adjust serial lockingRussell King2005-06-29
| | | | | | | | This patch changes the way serial ports are locked when getting modem status. This change is necessary because we will need to atomically read the modem status and take action depending on the CTS status. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* [SPARC64]: In sunsu driver, make sure to fully init chip for kbd/msDavid S. Miller2005-04-22
| | | | | | | | | We were forgetting to call sunsu_change_speed(). The reason that replugging in the mouse cable "fixes things" is that causes a BREAK interrupt which in turn caused a call to sunsu_change_speed() which would get the chip setup properly. Signed-off-by: David S. Miller <davem@davemloft.net>
* Linux-2.6.12-rc2v2.6.12-rc2Linus Torvalds2005-04-16
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
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