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* Blackfin SPORT UART: fix data misses while using transmit frame syncMichael Hennerich2009-06-11
| | | | | | | | | | | | | | | | | | SPORT transmit frame sync (TFS) isn't used as an electrical signal during normal SPORT UART emulation. However, it is useful in EIA RS-485 emulation as RS-485 Transceiver Driver Enable DE strobe. This patch configures: TFS to be active high in order to drive an DE strobe of an eventually connected RS-485 Transceiver. Late frame sync mode (LATFS) gating the entire TX shift cycle. Signed-off-by: Michael Hennerich <michael.hennerich@analog.com> Signed-off-by: Mike Frysinger <vapier@gentoo.org> Signed-off-by: Bryan Wu <cooloney@kernel.org> Signed-off-by: Alan Cox <alan@linux.intel.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* Blackfin SPORT UART: fix typo in sport_set_termios prototypeMike Frysinger2009-06-11
| | | | | | | Signed-off-by: Mike Frysinger <vapier@gentoo.org> Signed-off-by: Bryan Wu <cooloney@kernel.org> Signed-off-by: Alan Cox <alan@linux.intel.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* serial: add support for the TI AR7 internal UARTFlorian Fainelli2009-06-11
| | | | | | | | This patch adds support for the TI AR7 internal UART. Signed-off-by: Florian Fainelli <florian@openwrt.org> Signed-off-by: Alan Cox <alan@linux.intel.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* icom: fix compile errors when defining ICOM_TRACEBreno Leitao2009-06-11
| | | | | | | | | | | As it is, defining ICOM_TRACE produces some compile errors, as "parameter name omitted" and "redefinition of ‘trace’" This patch removes the wrong trace definition. Signed-off-by: Breno Leitao <leitao@linux.vnet.ibm.com> Signed-off-by: Alan Cox <alan@linux.intel.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* parport_pc: clean up the modified while loops using forAlan Cox2009-06-11
| | | | | | | And tidy up a few bits coding style detectors missed Signed-off-by: Alan Cox <alan@linux.intel.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* parport_pc: Coding styleAlan Cox2009-06-11
| | | | | | | | Michael's patch fixed some of the coding style so the style is now inconsistent. Sort the rest out Signed-off-by: Alan Cox <alan@linux.intel.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* parport_pc: Fix subscription bugsMichael Buesch2009-06-11
| | | | | | | | | | | | | | | | This patch fixes array subscription bugs in the parport_pc driver. drivers/parport/parport_pc.c: In function ‘parport_irq_probe’: drivers/parport/parport_pc.c:1589: warning: array subscript is above array bounds drivers/parport/parport_pc.c: In function ‘parport_pc_probe_port’: drivers/parport/parport_pc.c:1579: warning: array subscript is above array bounds The patch also fixes a few other array bugs, which the compiler was unable to find. Coding style violations are also fixed. Signed-off-by: Michael Buesch <mb@bu3sch.de> Signed-off-by: Alan Cox <alan@linux.intel.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* tty: simplify buffer allocator cleanupsAlan Cox2009-06-11
| | | | | | | | Having cleaned up the allocators we might as well remove the inline helpers for some of it Signed-off-by: Alan Cox <alan@lxorguk.ukuu.org.uk Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* tty: remove buffer special casingAlan Cox2009-06-11
| | | | | | | | | | Long long ago a 4K kmalloc allocated two pages so the tty layer used the page allocator, except on some machines where the page size was huge. This was removed from the core tty layer with the tty buffer re-implementation but not from tty_audit or the n_tty ldisc. Signed-off-by: Alan Cox <alan@linux.intel.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* icom: fixing a if clause spaghettiBreno Leitao2009-06-11
| | | | | | | | | adapter->version can only be ADAPTER_V2 or ADAPTER_V1. So, that OR operand in the "if" clause is non-sense and can be removed. Signed-off-by: Breno Leitao <leitao@linux.vnet.ibm.com> Signed-off-by: Alan Cox <alan@linux.intel.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* jsm: correctly support multiple 4/8-port boardsAlexander Y. Fomichev2009-06-11
| | | | | | | | | | | | | | | If there are more then one 4/8-port board jsm_uart_port_init allocate a line numbers of the second and further boards from range of previous one. This patch fixed the problem. Signed-off-by: Alexander Y. Fomichev <git.user@gmail.com> [printks fixed to add jsm: ] Signed-off-by: Alan Cox <alan@linux.intel.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* tty: iuu_phoenix: update version number.Olivier Bornet2009-06-11
| | | | | | Signed-off-by: Olivier Bornet <Olivier.Bornet@puck.ch> Signed-off-by: Alan Cox <alan@linux.intel.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* tty: iuu_phoenix: set termios.Olivier Bornet2009-06-11
| | | | | | | | | | | | | | | | | set_termios can now be used for setting the parity and the stopbits. This is needed to use with cards which use a different parity then the parity used at start (even). If the iuu_uart_baud function return an error, we will return the old_termios instead of the new one. Signed-off-by: Olivier Bornet <Olivier.Bornet@puck.ch> This was then revamped to use the various helpers, not copy non-hardware bits any to add mark/space parity and csize reporting Signed-off-by: Alan Cox <alan@linux.intel.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* tty: iuu_phoenix: Fix stopbit when uart goes on.Olivier Bornet2009-06-11
| | | | | | Signed-off-by: Olivier Bornet <Olivier.Bornet@puck.ch> Signed-off-by: Alan Cox <alan@linux.intel.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* tty: iuu_phoenix: fix locking.Olivier Bornet2009-06-11
| | | | | | | | Bring in the relevant bits of the 0.9 vendor driver. Signed-off-by: Olivier Bornet <Olivier.Bornet@puck.ch> Signed-off-by: Alan Cox <alan@linux.intel.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* tty: bring ldisc into CodingStyleAlan Cox2009-06-11
| | | | | Signed-off-by: Alan Cox <alan@lxorguk.ukuu.org.uk> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* tty: Move ldisc_flushAlan Cox2009-06-11
| | | | | | | We have a tty_ldisc file now so put tty_ldisc_flush in the right place Signed-off-by: Alan Cox <alan@linux.intel.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* tty: rewrite the ldisc lockingAlan Cox2009-06-11
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | There are several pretty much unfixable races in the old ldisc code, especially with respect to pty behaviour and also to hangup. It's easier to rewrite the code than simply try and patch it up. This patch - splits the ldisc from the tty (so we will be able to refcount it more cleanly later) - introduces a mutex lock for ldisc changing on an active device - fixes the complete mess that hangup caused - implements hopefully correct setldisc/close/hangup locking There are still some problems around pty pairs that have always been there but at least it is now possible to understand the code and fix further problems. This fixes the following known bugs - hang up can leak ldisc references - hang up may not call open/close on ldisc in a matched way - pty/tty pairs can deadlock during an ldisc change - reading the ldisc proc files can cause every ldisc to be loaded and probably a few other of the mysterious ldisc race reports. I'm sure it also adds the odd new one. Signed-off-by: Alan Cox <alan@linux.intel.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* tty: Extract various bits of ldisc codeAlan Cox2009-06-11
| | | | | | | | Before trying to tackle the ldisc bugs the code needs to be a good deal more readable, so do the simple extractions of routines first. Signed-off-by: Alan Cox <alan@linux.intel.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* tty: Fix oops when scanning the polling list for kgdbAlan Cox2009-06-11
| | | | | | | | | | Costantino Leandro found a bug in tty_find_polling_driver and provided a patch that fixed the crash but not the underlying bug. This fixes the underlying bug where the list walk corrupts the values it is using on a match but then reuses them if the open fails. Signed-off-by: Alan Cox <alan@lxorguk.ukuu.org.uk> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* pty: Fix a commentAlan Cox2009-06-11
| | | | | | | We fixed the globals, so now fix the comment Signed-off-by: Alan Cox <alan@linux.intel.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* tty: throttling race fixAlan Cox2009-06-11
| | | | | | | | | | | | | | | | | | | | | | | | | | | | The tty throttling code can race due to the lock drops. It takes very high loads but this has been observed and verified by Rob Duncan. The basic problem is that on an SMP box we can go CPU #1 CPU #2 need to throttle ? suppose we should buffer space cleared are we throttled yes ? - unthrottle call throttle method This changeet take the termios lock to protect against this. The termios lock isn't the initial obvious candidate but many implementations of throttle methods already need to poke around their own termios structures (and nobody really locks them against a racing change of flow control). This does mean that anyone who is setting tty->low_latency = 1 and then calling tty_flip_buffer_push from their unthrottle method is going to end up collapsing in a pile of locks. However we've removed all the known bogus users of low_latency = 1 and such use isn't safe anyway for other reasons so catching it would be an improvement. Signed-off-by: Alan Cox <alan@lxorguk.ukuu.org.uk> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* 8250_pci: add the OXCB950 chip to the 8250 PCI driver.Andre Przywara2009-06-11
| | | | | | | | | | | | | This adds support for the following serial controller chip: Oxford Semiconductor OXCB950 for PCI Cardbus interface http://www.transdimension.com/products/serial/OXCB950.html on this card: ExSys EX-1370 1 port high-speed serial card for ExpressCard/34 slot Signed-off-by: Andre Przywara <andre.przywara@amd.com> Signed-off-by: Alan Cox <alan@linux.intel.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* epca: fix test_bit parametersJiri Slaby2009-06-11
| | | | | | | | | Switch from ASYNC_* to ASYNCB_*, because test_bit expects bit number, not mask. Signed-off-by: Jiri Slaby <jirislaby@gmail.com> Signed-off-by: Alan Cox <alan@linux.intel.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* rocket: fix test_bit parametersJiri Slaby2009-06-11
| | | | | | | | | Switch from ASYNC_* to ASYNCB_*, because {test,set}_bit expect bit number, not mask. Signed-off-by: Jiri Slaby <jirislaby@gmail.com> Signed-off-by: Alan Cox <alan@linux.intel.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* tty: Clean up the ACM driver to CodingStyleAlan Cox2009-06-11
| | | | | | | | | | Or at least most of it. There are further clean ups possible and there are are also thing checkpatch moans about that would be silly to "fix". Also note some FIXME points found as the cleanup was done. Signed-off-by: Alan Cox <alan@linux.intel.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* tty: cdc_acm add krefsAlan Cox2009-06-11
| | | | | | | Now we have a port structure begin using the fields and kref counts Signed-off-by: Alan Cox <alan@linux.intel.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* tty: cyclades, remove unused variablesJiri Slaby2009-06-11
| | | | | | Signed-off-by: Jiri Slaby <jirislaby@gmail.com> Signed-off-by: Alan Cox <alan@linux.intel.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* tty: cyclades, fix nports handlingJiri Slaby2009-06-11
| | | | | | | | | | | | | | | Set up ports right after FW load so that we won't allocate maximal (64) ports when we use few. Also remove reading of nports in irq context, since we know it from initialisation now. This also fixes a tty ports unregistration on some fail paths and for Ze which registered 64 and unregistered real port count. Signed-off-by: Jiri Slaby <jirislaby@gmail.com> Signed-off-by: Alan Cox <alan@linux.intel.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* tty: cyclades, convert macros to inlinesJiri Slaby2009-06-11
| | | | | | | | | Remove ugly macros and add inlines instead of them. This improves readability and type checking a much. Signed-off-by: Jiri Slaby <jirislaby@gmail.com> Signed-off-by: Alan Cox <alan@linux.intel.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* tty: cyclades, cache HW versionJiri Slaby2009-06-11
| | | | | | | | | Store HW version locally to not read it all the time in interrupts and alike. Signed-off-by: Jiri Slaby <jirislaby@gmail.com> Signed-off-by: Alan Cox <alan@linux.intel.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* tty: cyclades, plx9060 casts cleanupJiri Slaby2009-06-11
| | | | | | | | | | | | | Remove ugly all-over-the-code casts of ctl_addr to 9060 space. Add an union to the cyclades_card structure, which contains a pointer to both 9050 and 9060 spaces. The 9050 space layout is unknown, so let it still as a void __iomem pointer. Signed-off-by: Jiri Slaby <jirislaby@gmail.com> Signed-off-by: Alan Cox <alan@linux.intel.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* tty: synclink_gt add receive pio modePaul Fulghum2009-06-11
| | | | | | | | | | | | Add receive programmed IO mode to reduce receive latency when using low data rates. The receive FIFO trigger level of 128 bytes used in DMA mode creates excessive latency when operating at low data rates. PIO mode is selected when user application requests data in blocks of less than 128 bytes. Signed-off-by: Paul Fulghum <paulkf@microgate.com> Signed-off-by: Alan Cox <alan@linux.intel.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* tty: Update cdc_acmAlan Cox2009-06-11
| | | | | | | | The CDC ACM driver uses the tty layer correctly so needs conversion. Start by adding and initializing the port structures. Signed-off-by: Alan Cox <alan@linux.intel.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* tty: Bring the usb tty port structure into more useAlan Cox2009-06-11
| | | | | | | | | | This allows us to clean stuff up, but is probably also going to cause some app breakage with buggy apps as we now implement proper POSIX behaviour for USB ports matching all the other ports. This does also mean other apps that break on USB will now work properly. Signed-off-by: Alan Cox <alan@lxorguk.ukuu.org.uk> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* tty: Implement a drain delay in the tty portAlan Cox2009-06-11
| | | | | | | | | We need this for devices that cannot flush and wait, but which do not order data and modem events. Without it we will hang up before all the data clears the hardware. Needed for the USB changes. Signed-off-by: Alan Cox <alan@linux.intel.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* tty: Add carrier processing on close to the tty_port coreAlan Cox2009-06-11
| | | | | | | | | | | | | | Some drivers implement this internally, others miss it out. Push the behaviour into the core code as that way everyone will do it consistently. Update the dtr rts method to raise or lower depending upon flags. Having a single method in this style fits most of the implementations more cleanly than two funtions. We need this in place before we tackle the USB side Signed-off-by: Alan Cox <alan@lxorguk.ukuu.org.uk> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* tty: cyclades, remove spurious check in ISRJiri Slaby2009-06-11
| | | | | | | | No need to check if dev_id is NULL, it never is. Signed-off-by: Jiri Slaby <jirislaby@gmail.com> Signed-off-by: Alan Cox <alan@linux.intel.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* tty: cyclades, don't kill FWJiri Slaby2009-06-11
| | | | | | | | | Don't reset the PLX chip after FW load, which effectively kills the FW, so that user had to boot manually. Signed-off-by: Jiri Slaby <jirislaby@gmail.com> Signed-off-by: Alan Cox <alan@linux.intel.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* tty:cyclades, load firmware even on ZeJiri Slaby2009-06-11
| | | | | | | | | Ze needs firmware to be loaded as well as Zo. Move cyz_load_fw one level upper to achieve that. Signed-off-by: Jiri Slaby <jirislaby@gmail.com> Signed-off-by: Alan Cox <alan@linux.intel.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* char: mxser, fix ISA board lookupPeter Botha2009-06-09
| | | | | | | | | | | | | | | | | There's a bug in the mxser kernel module that still appears in the 2.6.29.4 kernel. mxser_get_ISA_conf takes a ioaddress as its first argument, by passing the not of the ioaddr, you're effectively passing 0 which means it won't be able to talk to an ISA card. I have tested this, and removing the ! fixes the problem. Cc: "Peter Botha" <peterb@goldcircle.co.za> Signed-off-by: Jiri Slaby <jirislaby@gmail.com> Acked-by: Alan Cox <alan@lxorguk.ukuu.org.uk> Cc: <stable@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* Merge git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux-2.6-for-linusLinus Torvalds2009-06-09
|\ | | | | | | | | | | | | * git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux-2.6-for-linus: kvm: fix kvm reboot crash when MAXSMP is used cpumask: alloc zeroed cpumask for static cpumask_var_ts cpumask: introduce zalloc_cpumask_var
| * cpumask: alloc zeroed cpumask for static cpumask_var_tsYinghai Lu2009-06-09
| | | | | | | | | | | | | | | | These are defined as static cpumask_var_t so if MAXSMP is not used, they are cleared already. Avoid surprises when MAXSMP is enabled. Signed-off-by: Yinghai Lu <yinghai.lu@kernel.org> Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
* | Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6Linus Torvalds2009-06-09
|\ \ | | | | | | | | | | | | | | | * git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6: cls_cgroup: Fix oops when user send improperly 'tc filter add' request r8169: fix crash when large packets are received
| * | r8169: fix crash when large packets are receivedEric Dumazet2009-06-09
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Michael Tokarev reported receiving a large packet could crash a machine with RTL8169 NIC. ( original thread at http://lkml.org/lkml/2009/6/8/192 ) Problem is this driver tells that NIC frames up to 16383 bytes can be received but provides skb to rx ring allocated with smaller sizes (1536 bytes in case standard 1500 bytes MTU is used) When a frame larger than what was allocated by driver is received, dma transfert can occurs past the end of buffer and corrupt kernel memory. Fix is to tell to NIC what is the maximum size a frame can be. This bug is very old, (before git introduction, linux-2.6.10), and should be backported to stable versions. Reported-by: Michael Tokarev <mjt@tls.msk.ru> Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Tested-by: Michael Tokarev <mjt@tls.msk.ru> Signed-off-by: David S. Miller <davem@davemloft.net>
* | | Merge branch 'for-linus' of git://neil.brown.name/mdLinus Torvalds2009-06-09
|\ \ \ | |_|/ |/| | | | | | | | | | | | | | * 'for-linus' of git://neil.brown.name/md: md/raid5: fix bug in reshape code when chunk_size decreases. md/raid5 - avoid deadlocks in get_active_stripe during reshape md/raid5: use conf->raid_disks in preference to mddev->raid_disk
| * | md/raid5: fix bug in reshape code when chunk_size decreases.NeilBrown2009-06-09
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Now that we support changing the chunksize, we calculate "reshape_sectors" to be the max of number of sectors in old and new chunk size. However there is one please where we still use 'chunksize' rather than 'reshape_sectors'. This causes a reshape that reduces the size of chunks to freeze. Signed-off-by: NeilBrown <neilb@suse.de>
| * | md/raid5 - avoid deadlocks in get_active_stripe during reshapeNeilBrown2009-06-09
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | md has functionality to 'quiesce' and array so that all pending IO completed and no new IO starts. This is used to achieve a stable state before making internal changes. Currently this quiescing applies equally to normal IO, resync IO, and reshape IO. However there is a problem with applying it to reshape IO. Reshape can have multiple 'stripe_heads' that must be active together. If the quiesce come between allocating the first and the last of such a collection, then we deadlock, as the last will not be allocated until the quiesce is lifted, the quiesce will not be lifted until the first (which has been allocated) gets used, and that first cannot be used until the last is allocated. It is not necessary to inhibit reshape IO when a quiesce is requested. Those places in the code that require a full quiesce will ensure the reshape thread is not running at all. So allow reshape requests to get access to new stripe_heads without being blocked by a 'quiesce'. This only affects in-place reshapes (i.e. where the array does not grow or shrink) and these are only newly supported. So this patch is not needed in earlier kernels. Signed-off-by: NeilBrown <neilb@suse.de>
| * | md/raid5: use conf->raid_disks in preference to mddev->raid_diskNeilBrown2009-06-09
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | mddev->raid_disks can be changed and any time by a request from user-space. It is a suggestion as to what number of raid_disks is desired. conf->raid_disks can only be changed by the raid5 module with suitable locks in place. It is a statement as to the current number of raid_disks. There are two places where the latter should be used, but the former is used. This can lead to a crash when reshaping an array. This patch changes to mddev-> to conf-> Signed-off-by: NeilBrown <neilb@suse.de>
* | | Merge branch 'upstream' of git://ftp.linux-mips.org/pub/scm/upstream-linusLinus Torvalds2009-06-08
|\ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * 'upstream' of git://ftp.linux-mips.org/pub/scm/upstream-linus: MIPS: Outline udelay and fix a few issues. MIPS: ioctl.h: Fix headers_check warnings MIPS: Cobalt: PCI bus is always required to obtain the board ID MIPS: Kconfig: Remove "Support for" from Cavium system type MIPS: Sibyte: Honor CONFIG_CMDLINE SSB: BCM47xx: Export ssb_watchdog_timer_set
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