- 19 Sep, 2009 35 commits
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Alan Cox authored
We want to be able to sleep in the destructor for USB at least. It isn't a hot path so just pushing it to a work queue doesn't really cause any difficulty. Signed-off-by:
Alan Cox <alan@linux.intel.com> Signed-off-by:
Greg Kroah-Hartman <gregkh@suse.de>
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Alan Cox authored
Convert cyclades to use the full tty_port_close helper Signed-off-by:
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Alan Cox authored
We need to kref this driver in order to use port_close Signed-off-by:
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Alan Cox authored
Start to extract and build a model for a common tty_port_close() Signed-off-by: -
Alan Cox authored
Prepare for the tty_port_close function by splitting out methods Signed-off-by: -
Alan Cox authored
Moving towards a tty_port method for open/close Signed-off-by:
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Alan Cox authored
Now we are extracting out methods for shutdown and the like we can add a proper tty_port_close method that knows all the innards of the tty closing process and hides the lot from the caller. At some point in the future this will be paired with a similar open() helper and the drivers can stick to hardware management. Signed-off-by:
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Anton Vorontsov authored
A platform clock drives 8250 ports in most SOC systems, the clock might run at high frequencies, and so it's not always possible to downscale uart clock to a desired value. Currently the 8250 uart driver accepts not supported baud rates, and what is worse, it is doing this silently, and then passes not accepted values to a new termios, so userspace has no chance to catch this kind of errors (userspace verifies that settings were accepted by reading back and comparing the settings). This patch fixes the issue by passing minimum baud rate to the uart_get_baud_rate() call, the call should take care of all bounds, so userspace should now report: # stty -F /dev/ttyS0 speed 300 115200 stty: /dev/ttyS0: unable to perform all requested operations p.s. uart_get_baud_rate() falls back to 9600, which still might be too low for some 10 GHz platforms, but that's a separate issue, and we can wait with fixing this till we find such a platform. Signed-off-by:Anton Vorontsov <avorontsov@ru.mvista.com> Signed-off-by:
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Vikram Pandita authored
There is currently no provision for passing IRQ trigger flags for serial IRQs with triggering requirements (such as GPIO IRQs) This patch adds irqflags to plat_serial8250_port that can be passed from board file to reqest_irq() of 8250 driver Changes are backward compatible with boards passing UPF_SHARE_IRQ flag Tested on Zoom2 board that has IRQF_TRIGGER_RISING requirement for 8250 irq [Moved new flag to end to fix bugs in the original with the old_serial array -- Alan] Signed-off-by:
Vikram Pandita <vikram.pandita@ti.com> Signed-off-by:
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Alan Cox authored
The modem ioctls are not routed via the ioctl method so kill the old dead code. The correct code is also already present and hooked in. Signed-off-by:
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Alan Cox authored
Signed-off-by:
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Kees Schoenmakers authored
I made a correction for get_lsr_info, now it returns some meaningful information. I tested it with two simultaneous simplex modem channels. it is attached Signed-off-by:
Kees Schoenmakers <k.schoenmakers@sigmae.nl> Signed-off-by:
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Kees Schoenmakers authored
Fix the tiocmget/mset handling on the mos7720 USB serial port. [Minor space reformatting for coding style - Alan] Signed-off-by:
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Alan Cox authored
Currently kfifo cannot be used by parts of the kernel that use "const" properly as kfifo itself does not use const for passed data blocks which are indeed const. Signed-off-by:
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Alan Cox authored
The network layer now has a destructor we can hook to clean up the slip devices array. That needs us to initiate unregister events in the right places which with the current tty layer we can do, and with network refcounting is safe to do. Signed-off-by:
Alan Cox <alan@lxorguk.ukuu.org.uk> Signed-off-by:
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Jiri Slaby authored
Remove duplicated code from cy_set_line_char. There were 2 if branches with same contents except flags. Branch only for the flags computation and use them in the only copy of the code. Signed-off-by:
Jiri Slaby <jirislaby@gmail.com> Signed-off-by:
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Jiri Slaby authored
Add helpers for io operations, so that we can eliminate huge amount of supporting code. It is now centralized in those helpers and used values are precomputed in the init phase. Signed-off-by:
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Jiri Slaby authored
- save one indent level by inverting !fw_loaded condition - read rs_status on Z and write it after we change all the flags, don't do that separately - remove Y inverted rts/dtr branching, precompute registers and use them Signed-off-by:
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Jiri Slaby authored
- add a cy_ prefix to functions with changed prototypes - cy_get_serial_info: initialize serial_struct by initializer, save a memset - inline simple functions (get_mon_info, {s,g}et_default_threshold, {s,g}et_default_timeout) directly in the ioctl handler - add a cy_cflags_changed helper to not copy its code by wait_event_interruptible - remove some ret_val = 0 assignments, it's preset to 0 - TIOCGICOUNT: don't do many put_user's, do one copy_to_user Signed-off-by: -
Jiri Slaby authored
There is a duplicated code for Y and Z in cy_startup, merge the paths. Signed-off-by:
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Jiri Slaby authored
For Z cards, use tty helpers for dtr_rts. If we did the same for Y cards, it will cause a deadlock, because cyy_dtr_rts takes a lock which we already hold. Instead, we introduce a Y helper expecting card lock to be held. It may then be called with set/clear masks from other places. Signed-off-by:
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Jiri Slaby authored
Avoid long busy loops (5 ms) which may be replaced by sleeps. Signed-off-by:
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Jiri Slaby authored
- remove changelog from the file. we don't care about ancient history - update copyright year - update version - constify some stuff - empty lines removal - unused variables and macros removal - remove some asm/ includes, they are sucked by linux/ variants Signed-off-by:
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Jiri Slaby authored
Use new tty helpers for close, which allows much code removal. The only real change is locking. card_lock for protecting was used inappropriately (just to have a critical section, no matter which lock is used), so the change to port->lock is fine. Remove also useless debug printks while being there. Signed-off-by:
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Jiri Slaby authored
Do not duplicate common tty_port_hangup code. Use it instead. Also do not unset ASYNC_NORMAL_ACTIVE and wake up from the tty_hangup() caller. It makes no sense since we don't check that flag in sleepers. tty_port_hangup() performed later will do the right job. Signed-off-by:
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Jiri Slaby authored
Don't fetch firmware address and recompute channel control on each port access. Precompute the values on init and use them later all the time. The same for board control. This simplify code and improves readability. Signed-off-by:
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Jiri Slaby authored
Use a tty_port common instead. This saves lots of .text and makes the code a lot more readable. This involves separation of a dtr_rts handling, next patches will use that to not duplicate the code all over the place. Signed-off-by:
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Jiri Slaby authored
While this is not problem for Y card handlers (they are protected by card_lock), Z handlers and other functions may dereference NULL at any point after hangup/close. Even if (tty == NULL) was already performed in the handler. Note that it's not an issue for Y cards just for now. After switching to tty_port_close_* et al. this will be a problem. So add refcounting to them all. Also proc .show doesn't take a tty reference and it should (along with a ldisc one). While at it and changing prototypes (adding tty param), prepend cy_ to functions which don't have it yet. Signed-off-by:
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Roel Kluin authored
Previously, if any bit other than CMD_SND_BREAK was set, CMD_SND_BREAK was not unset. Signed-off-by:
Roel Kluin <roel.kluin@gmail.com> Signed-off-by:
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Jaswinder Singh Rajput authored
fix the following 'make includecheck' warning: drivers/char/vt.c: linux/device.h is included more than once. Signed-off-by:
Jaswinder Singh Rajput <jaswinderrajput@gmail.com> Signed-off-by:
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Linus Torvalds authored
Now that the /proc/tty/ldiscs handling doesn't play games with 'struct ldisc' any more, the only remaining user of 'tty_ldisc_try_get()' is 'tty_ldisc_get()' (note the lack of 'try'). And we're actually much better off folding the logic directly into that file, since the 'try' part was always about trying to get the ldisc operations, not the ldisc itself: and making that explicit inside of 'tty_ldisc_get()' clarifies the whole semantics. Signed-off-by:
Linus Torvalds <torvalds@linux-foundation.org> Cc: Alan Cox <alan@lxorguk.ukuu.org.uk> Cc: OGAWA Hirofumi <hirofumi@mail.parknet.co.jp>, Tested-by:
Sergey Senozhatsky <sergey.senozhatsky@mail.by> Signed-off-by:
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Linus Torvalds authored
The /proc/tty/ldiscs file is totally and utterly un-interested in the "struct tty_ldisc" structures, and only cares about the underlying ldisc operations. So don't make it create a dummy 'struct ldisc' only to get a pointer to the operations, and then destroy it. Instead, we split up the function 'tty_ldisc_try_get()', and create a 'get_ldops()' helper that just looks up the ldisc operations based on the ldisc number. That makes the code simpler to read (smaller and more well-defined helper functions), and allows the /proc functions to avoid creating that useless dummy only to immediately free it again. Signed-off-by:
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Wolfram Sang authored
Add ID as reported in: http://lists.infradead.org/pipermail/linux-pcmcia/2009-May/006127.htmlReported-by:
Kenneth Moorman <KMoorman@transy.edu> Signed-off-by:
Wolfram Sang <w.sang@pengutronix.de> Cc: stable <stable@kernel.org> Signed-off-by:
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Mike Frysinger authored
Since early printk only makes sense/works when the serial driver is built into the kernel, disable the option for this driver when it is going to be built as a module. Otherwise we get build failures due to the ifdef handling. Signed-off-by:
Mike Frysinger <vapier@gentoo.org> Cc: Alan Cox <alan@lxorguk.ukuu.org.uk> Cc: stable <stable@kernel.org> Signed-off-by:
Andrew Morton <akpm@linux-foundation.org> Signed-off-by:
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Tilman Schmidt authored
The tty_operation chars_in_buffer() is not allowed to return a negative value to signal an error. Corrects the problem flagged by commit 23198fda, "tty: fix chars_in_buffers". Signed-off-by:
Tilman Schmidt <tilman@imap.cc> Cc: "David S. Miller" <davem@davemloft.net> Cc: stable <stable@kernel.org> Signed-off-by:
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- 18 Sep, 2009 5 commits
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Linus Torvalds authored
Merge branch 'x86-platform-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'x86-platform-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (38 commits) x86: Move get/set_wallclock to x86_platform_ops x86: platform: Fix section annotations x86: apic namespace cleanup x86: Distangle ioapic and i8259 x86: Add Moorestown early detection x86: Add hardware_subarch ID for Moorestown x86: Add early platform detection x86: Move tsc_init to late_time_init x86: Move tsc_calibration to x86_init_ops x86: Replace the now identical time_32/64.c by time.c x86: time_32/64.c unify profile_pc x86: Move calibrate_cpu to tsc.c x86: Make timer setup and global variables the same in time_32/64.c x86: Remove mca bus ifdef from timer interrupt x86: Simplify timer_ack magic in time_32.c x86: Prepare unification of time_32/64.c x86: Remove do_timer hook x86: Add timer_init to x86_init_ops x86: Move percpu clockevents setup to x86_init_ops x86: Move xen_post_allocator_init into xen_pagetable_setup_done ... Fix up conflicts in arch/x86/include/asm/io_apic.h
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Geoffrey Thomas authored
Signed-off-by:
Geoffrey Thomas <geofft@ksplice.com> Signed-off-by:
Tim Abbott <tabbott@ksplice.com> Acked-by:
Sam Ravnborg <sam@ravnborg.org> Acked-by:
David S. Miller <davem@davemloft.net> Signed-off-by:
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Nelson Elhage authored
This is largely a straightforward conversion. The patch results in fewer output sections, and some data being reordered, but should have no functional impact. Also, note that this patch moves some data (namely, init_task and cacheline-aligned) inside [_sdata,_edata]. Because frv already builds using -ffunction-sections -fdata-sections, we can't use BSS_SECTION or RW_DATA_SECTION yet, since they do not currently include the required .bss.* and .data.* sections. Signed-off-by:
Nelson Elhage <nelhage@ksplice.com> Acked-by:
David Howells <dhowells@redhat.com> Signed-off-by:
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Nelson Elhage authored
It appears that frv copied the .altinstructions definitions in its linker script from x86. Since frv doesn't put anything in those sections, this is just dead code. Signed-off-by:
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git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4Linus Torvalds authored
* 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4: (64 commits) ext4: Update documentation about quota mount options ext4: replace MAX_DEFRAG_SIZE with EXT_MAX_BLOCK ext4: Fix the alloc on close after a truncate hueristic ext4: Add a tracepoint for ext4_alloc_da_blocks() ext4: store EXT4_EXT_MIGRATE in i_state instead of i_flags ext4: limit block allocations for indirect-block files to < 2^32 ext4: Fix different block exchange issue in EXT4_IOC_MOVE_EXT ext4: Add null extent check to ext_get_path ext4: Replace BUG_ON() with ext4_error() in move_extents.c ext4: Replace get_ext_path macro with an inline funciton ext4: Fix include/trace/events/ext4.h to work with Systemtap ext4: Fix initalization of s_flex_groups ext4: Always set dx_node's fake_dirent explicitly. ext4: Fix async commit mode to be safe by using a barrier ext4: Don't update superblock write time when filesystem is read-only ext4: Clarify the locking details in mballoc ext4: check for need init flag in ext4_mb_load_buddy ext4: move ext4_mb_init_group() function earlier in the mballoc.c ext4: Make non-journal fsync work properly ext4: Assure that metadata blocks are written during fsync in no journal mode ...
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