- 11 Jun, 2009 40 commits
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Fabian Godehardt authored
upper layers, namely line discipline, need to be notified when transmission of more data is possible. For spurious cases, where IRQ handling does not supply notification for sure, it is given additionally here, when data has just been transmitted and space in the buffer will most probably be available. Signed-off-by:
Fabian Godehardt <fg@emlix.com> Signed-off-by:
Oskar Schirmer <os@emlix.com> Signed-off-by:
Alan Cox <alan@linux.intel.com> Signed-off-by:
Linus Torvalds <torvalds@linux-foundation.org>
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Daniel Glöckner authored
"have_rtscts" is assigned 1, while it is declared int:1, two's complement, which can hold 0 and -1 only. The code works, as the upper bits are cut off, and tests are done against 0 only. Nonetheless, correctly declaring the bit field as unsigned int:1 renders the code more robust. Signed-off-by:
Daniel Glöckner <dg@emlix.com> Signed-off-by:
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Oskar Schirmer authored
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Jiri Slaby authored
Use prepare_to_wait and finish_wait instead of add_wait_queue and remove_wait_queue. This avoids us setting a task state. Signed-off-by:
Jiri Slaby <jirislaby@gmail.com> Signed-off-by:
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Jiri Slaby authored
Use wait_event instead of sleep_on in tty_block_til_ready. Wait for ASYNC_CLOSING flag being 0. Signed-off-by:
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Elina Pasheva authored
Interface blacklisting is necessary for non-serial interfaces that are handled by a different driver. The interface blacklisting is implemented in sierra driver per device. Each device in need of a blacklist has a static information array kept in the driver. This array contains the interface numbers that are blacklisted. The pointer for each blacklist array and the length of that blacklist are 'bundled' in data structure sierra_iface_info. A pointer to this information is set in id_table when the device is added to the id_table. The following is summary of changes we have made to sierra.c driver in this patch dealing with interface blacklisting support: - Added data structure sierra_iface_info and function is_blacklisted() to support blacklisting - Modified sierra_probe() to handle blacklisted interfaces accordingly - Improved comments in id_table - Added new device in id_table with blacklist interface support Signed-off-by:
Elina Pasheva <epasheva@sierrawireless.com> Signed-off-by:
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Elina Pasheva authored
[Folded from eight patches into one as the original set according to the author "All of the patches need to be applied to obtain a working product" so keeping them split seems unhelpful Merge fixes done versus other conflicting changes and moved the spin_lock_init from open to setup time -- Alan] Summary of the changes and code re-organization in this patch: - The memory for urbs is allocated and urbs are submitted only for the active interfaces (instead of pre-allocating these for all interfaces). This will save memory especially in the case of using composite devices. - The code has been re-organized and functionality has been extracted from sierra_startup(), sierra_shutdown(), sierra_open(), sierra_close() and added in helper functions sierra_release_urb(), sierra_stop_rx_urbs(), sierra_submit_rx_urbs() and sierra_setup_urb() - Added function sierra_release_urb() to free an urb and its transfer buffer. - Removed unecessary include file reference and comment. - Added function sierra_stop_rx_urbs() that takes care of the release of receive and interrupt urbs. This function is to be called by sierra_close() whenever an interface is de-activated. - Added new function sierra_submit_rx_urbs() that handles the submission of receive urbs and interrupt urbs (if any) during the interface activation. This function is to be called by sierra_open(). Added a second parameter to pass the memory allocation (as suggested by Oliver Neukum) so that this function can be used in post_reset() and resume(). - Added new function sierra_setup_urb() that contains the functionality to allocate an urb, fill bulk urb using the supplied memory allocation flag and release urb upon error. Added parameter so that the caller pass the memory allocation flag for flexibility. - Moved sierra_close() before sierra_open() to resolve dependencies introduced by the code reorganization. - Modified sierra_close() to call sierra_stop_rx_urbs() and sierra_release_urb() functions added in previous patch. - Modified sierra_open() to call sierra_setup_urb() and sierra_submit_rx_urbs() functions; note urbs are allocated and submitted for each activated interface. - Modified sierra_startup() so that allocation of urbs happens whenever an interface is activated (urb allocation is moved to sierra_open()). - Modified sierra_shutdown() so that urbs are freed whenever an interface is de-activated (urb freeing moved to sierra_close() as shown in previous patch from the series) - Removed unecessary data structure from sierra_port_private_data - Suppress an entry in logs by not re-submitting an urb when usb_submit_urb() returns -EPERM, as this shows that usb_kill_urb() is running (as suggested by Oliver Neukum) Signed-off-by:
Alan Cox <alan.cox@linux.intel.com> Signed-off-by:
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Alan Cox authored
The various merges into the sierra driver inadvertently undid commit 212b8f0c by Elina Pasheva <epasheva@sierrawireless.com>. Put it back so the OBEX port works again. Signed-off-by:
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Alan Cox authored
The driver only handles speeds but it fails to return the current values for the hardware features it does not support. Signed-off-by:
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Richard Röjfors authored
Driver for the UART found in the Timberdale FPGA Signed-off-by:
Richard Röjfors <richard.rojfors.ext@mocean-labs.com> Signed-off-by:
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Alan Cox authored
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Alan Cox authored
Closes-bug: http://bugzilla.kernel.org/show_bug.cgi?id=13429Signed-off-by:
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Alan Cox authored
Although this doesn't cause any problems it could potentially do so for future mmap using devices. No real work is needed to sort it out so untangle it before it causes problems Signed-off-by:
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Mike Frysinger authored
The Blackfin JTAG interface has a 4 byte generic data field (EMUDAT). With a little creative thinking, we can turn this into a TTY device. Signed-off-by:
Mike Frysinger <vapier@gentoo.org> Signed-off-by:
Bryan Wu <cooloney@kernel.org> Signed-off-by:
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Alan Cox authored
The new open/close logic handles DTR and friends, so don't do it in our own open routine as well. Signed-off-by:
Alan Cox <alan@lxorguk.ukuu.org.uk> Signed-off-by:
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Alan Cox authored
Bluetooth shouldn't be doing this as most drivers don't support the flag, furthermore it shouldn't be needed with newer buffering. This becomes rather more visible as the locking fixes make the abuse of low_latency visible as spew on the users console/dmesg. Signed-off-by:
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Alan Cox authored
This allows users to use the standard setserial command with this FT232 feature as well as obscure chip specific interfaces we have now. We keep track of and respect the sysfs value for non-low-latency cases. In theory we could do smart stuff with VTIME and the like but this seems of questionable worth. Closes-bug: http://bugzilla.kernel.org/show_bug.cgi?id=9120 Signed-off-by: Alan Cox <alan@linux.intel.com) Signed-off-by:
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Craig Shelley authored
This patch replaces the string "CP2101" with "CP210x" within cp210x.c This is to reduce confusion about the fact that the driver is actually compatible with CP2101, CP2102 and CP2103 devices. Signed-off-by:
Craig Shelley <craig@microtron.org.uk> (Fixed some collisions merging) Signed-off-by:
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Craig Shelley authored
The CP210X driver was developed without official device specifications. This has lead to an incorrect assumption that all GET request codes are equal to the corresponding SET request code +1. This patch removes this incorrect assumption, and uses request code definitions based on the updated GPL driver from SiLabs. This modification is needed before extended functionality such as GPIO on CP2103 can be supported. Signed-off-by:
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Craig Shelley authored
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Sonic Zhang authored
The UART RX handling code isn't exactly speeding, so don't go disabling all interrupts when processing the buffer. Just disable the relevant DMA interrupt. This greatly improves latency of the system when utilizing the UART. Signed-off-by:
Sonic Zhang <sonic.zhang@analog.com> Signed-off-by:
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Sonic Zhang authored
05000231 - UART STB Bit Incorrectly Affects Receiver Setting For processors affected by this, we cannot safely allow CSTOPB to be set as the UART will then be unable to properly clock in bytes. Signed-off-by:
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Sonic Zhang authored
Add some comments for how these anomalies are addressed: 05000215 - UART TX Interrupt Masked Erroneously We always clear ETBEI within last UART TX interrupt to end a string. It is always set when starting a new tx transfer. 05000099 - UART Line Status Register (UART_LSR) Bits Are Not Updated at the Same Time This anomaly affects driver only in POLL code where multi bits of UART_LSR are checked. It doesn't affect current bfin_5xx.c driver. Signed-off-by:
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Sonic Zhang authored
This bug is caused by irregular behavior of DMA register CURR_X_COUNT and CURR_Y_COUNT when an auto restart uart rx DMA run to last byte in DMA buffer, trigger the interrupt and stay at this possiton. The status of current x and y is 0:7 instead of 512:8 or 0:8. The driver doesn't take care of this case when calculating the position. URL: http://blackfin.uclinux.org/gf/tracker/5063Reported-by:
Tomasz Motylewski <t.motylewski@bfad.de> Signed-off-by:
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Graf Yang authored
Add a SSYNC() into bfin_serial_dma_tx_chars() to ensure DMA registers are written with new data otherwise we might miss a byte or two when the system is under load. PIO mode is OK though. Signed-off-by:
Graf Yang <graf.yang@analog.com> Signed-off-by:
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Robin Getz authored
Since we already setup the early console UART in arch/blackfin/kernel/early_printk.c, and common functions which are enabled from the .setup will override the proper settings later, don't fill in these structures. Otherwise we get mangled baudrate settings when using early_printk. Signed-off-by:
Robin Getz <rgetz@blackfin.uclinux.org> Signed-off-by:
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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:
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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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