- 11 Jun, 2009 40 commits
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Sonic Zhang authored
Ignore receiving data if new position is in the same line of current buffer tail and is small. This should decrease overruns. Signed-off-by:
Sonic Zhang <sonic.zhang@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>
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Mike Frysinger authored
Hopefuly the new version is easier to read, but in the process it declares proper clobber lists and better constraints so that GCC can do a better job at allocating free registers. Signed-off-by:
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Michael Hennerich authored
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:
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Mike Frysinger authored
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Florian Fainelli authored
This patch adds support for the TI AR7 internal UART. Signed-off-by:
Florian Fainelli <florian@openwrt.org> Signed-off-by:
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Breno Leitao authored
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:
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Alan Cox authored
And tidy up a few bits coding style detectors missed Signed-off-by:
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Alan Cox authored
Michael's patch fixed some of the coding style so the style is now inconsistent. Sort the rest out Signed-off-by:
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Michael Buesch authored
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:
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Alan Cox authored
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: -
Alan Cox authored
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:
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Breno Leitao authored
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:
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Alexander Y. Fomichev authored
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:
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Olivier Bornet authored
Signed-off-by:
Olivier Bornet <Olivier.Bornet@puck.ch> Signed-off-by:
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Olivier Bornet authored
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:
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Olivier Bornet authored
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Olivier Bornet authored
Bring in the relevant bits of the 0.9 vendor driver. Signed-off-by:
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Alan Cox authored
Signed-off-by:
Alan Cox <alan@lxorguk.ukuu.org.uk> Signed-off-by:
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Alan Cox authored
We have a tty_ldisc file now so put tty_ldisc_flush in the right place Signed-off-by:
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Alan Cox authored
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:
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Alan Cox authored
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:
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Alan Cox authored
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:
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Alan Cox authored
We fixed the globals, so now fix the comment Signed-off-by:
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Alan Cox authored
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Alan Cox authored
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:
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Arnd Bergmann authored
The legacy TCSETA{,W,F} ioctls failed to set the termio->c_line field on x86. This adds a missing get_user. The same ioctls also fail to report faulting user pointers, which we keep ignoring. Signed-off-by:Arnd Bergmann <arnd@arndb.de> Signed-off-by:
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Andre Przywara authored
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:
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Jiri Slaby authored
Switch from ASYNC_* to ASYNCB_*, because test_bit expects bit number, not mask. Signed-off-by:
Jiri Slaby <jirislaby@gmail.com> Signed-off-by:
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Jiri Slaby authored
Switch from ASYNC_* to ASYNCB_*, because {test,set}_bit expect bit number, not mask. Signed-off-by: -
Jiri Slaby authored
Define ASYNCB_* flags which are bit numbers of the ASYNC_* flags. This is useful for {test,set,clear}_bit. Also convert each ASYNC_% to be (1 << ASYNCB_%) and define masks with the macros, not constants. Tested with: #include "PATH_TO_KERNEL/include/linux/serial.h" static struct { unsigned int new, old; } as[] = { { ASYNC_HUP_NOTIFY, 0x0001 }, { ASYNC_FOURPORT, 0x0002 }, ... { ASYNC_BOOT_ONLYMCA, 0x00400000 }, { ASYNC_INTERNAL_FLAGS, 0xFFC00000 } }; ... for (a = 0; a < ARRAY_SIZE(as); a++) if (as[a].old != as[a].new) printf("%.8x != %.8x\n", as[a].old, as[a].new); Signed-off-by: -
Alan Cox authored
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:
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Alan Cox authored
Now we have a port structure begin using the fields and kref counts Signed-off-by:
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Jiri Slaby authored
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Jiri Slaby authored
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:
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Jiri Slaby authored
They are unused anyway. Signed-off-by:
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Jiri Slaby authored
Remove ugly macros and add inlines instead of them. This improves readability and type checking a much. Signed-off-by:
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Jiri Slaby authored
Store HW version locally to not read it all the time in interrupts and alike. Signed-off-by:
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Jiri Slaby authored
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:
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Paul Fulghum authored
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:
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Alan Cox authored
The CDC ACM driver uses the tty layer correctly so needs conversion. Start by adding and initializing the port structures. Signed-off-by:
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