- 11 Jun, 2009 40 commits
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Linus Torvalds authored
* frv: FRV: Implement new-style ptrace FRV: Don't turn on TIF_SYSCALL_TRACE unconditionally in syscall prologue FRV: Implement TIF_NOTIFY_RESUME FRV: Remove in-kernel strace code FRV: BUG to BUG_ON changes FRV: bitops: Change the bitmap index from int to unsigned long * mn10300: MN10300: Add utrace/tracehooks support MN10300: Don't set the dirty bit in the DTLB entries in the TLB-miss handler
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David Howells authored
Add utrace/tracehooks support to MN10300. Signed-off-by:
David Howells <dhowells@redhat.com> Signed-off-by:
Linus Torvalds <torvalds@linux-foundation.org>
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David Howells authored
Remove the special handling for the Data TLB entry dirty bit in the TLB-miss handler. As the code stands, all that it does is to cause us to take a second data address exception to set the dirty bit. Instead, we can just let pte_mkdirty() set the bit. Signed-off-by:
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David Howells authored
Implement the new-style ptrace for FRV, including adding appropriate tracehooks. Signed-off-by:
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David Howells authored
Don't turn on TIF_SYSCALL_TRACE unconditionally in syscall prologue in FRV's entry.S. This was originally for debugging stuff and should have been removed a long time ago. Signed-off-by:
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David Howells authored
Implement the TIF_NOTIFY_RESUME thread flag, making it call do_notify_resume() which then clears it. This will be made use of later by tracehooks in the new-style ptrace implementation Also discard TIF_IRET as that's not used by FRV. Signed-off-by:
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David Howells authored
Remove in-kernel strace code from the FRV arch as it's not really needed any more. Signed-off-by:
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Stoyan Gaydarov authored
Change some BUG()'s to BUG_ON()'s. Signed-off-by:
Stoyan Gaydarov <stoyboyker@gmail.com> Signed-off-by:
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Justin Chen authored
Change the index to unsigned long in all bitops for [frv] Signed-off-by:
Justin Chen <justin.chen@hp.com> Reviewed-by:
Bjorn Helgaas <bjorn.helgaas@hp.com> Signed-off-by:
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Linus Torvalds authored
* serial-from-alan: (79 commits) moxa: prevent opening unavailable ports imx: serial: use tty_encode_baud_rate to set true rate imx: serial: add IrDA support to serial driver imx: serial: use rational library function lib: isolate rational fractions helper function imx: serial: handle initialisation failure correctly imx: serial: be sure to stop xmit upon shutdown imx: serial: notify higher layers in case xmit IRQ was not called imx: serial: fix one bit field type imx: serial: fix whitespaces (no changes in functionality) tty: use prepare/finish_wait tty: remove sleep_on sierra: driver interface blacklisting sierra: driver urb handling improvements tty: resolve some sierra breakage timbuart: Fix the termios logic serial: Added Timberdale UART driver tty: Add URL for ttydev queue devpts: unregister the file system on error tty: Untangle termios and mm mutex dependencies ...
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Dirk Eibach authored
In moxa.c there are 32 minor numbers reserved for each device. The number of ports actually available per device is stored in moxa_board_conf->numPorts. This number is not considered in moxa_open(). Opening a port that is not available results in a kernel oops. This patch adds a test to moxa_open() that prevents opening unavailable ports. Signed-off-by:
Dirk Eibach <eibach@gdsys.de> Signed-off-by:
Jiri Slaby <jirislaby@gmail.com> Signed-off-by:
Alan Cox <alan@linux.intel.com> Signed-off-by:
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Oskar Schirmer authored
real baud rate may be different from the one requested. for upper layers, set the nearest value to the real rate in favour of the rate previously requested. Signed-off-by:
Oskar Schirmer <os@emlix.com> Signed-off-by:
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Fabian Godehardt authored
Using the iMX serial driver with an IrDA device needs extra peripheral settings and specific timing depending on the transmitter circuitry used. Signed-off-by:
Fabian Godehardt <fg@emlix.com> Signed-off-by:
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Oskar Schirmer authored
for calculation of numerator and denominator used in baud rate setting, use generic library function for optimum settings. Signed-off-by:
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Oskar Schirmer authored
Provide a helper function to determine optimum numerator denominator value pairs taking into account restricted register size. Useful especially with PLL and other clock configurations. Signed-off-by:
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Daniel Glöckner authored
correctly de-initialise device when setting up failed, call to pdata->exit() was missing. Signed-off-by:
Daniel Glöckner <dg@emlix.com> Signed-off-by:
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Fabian Godehardt authored
needed to avoid continued transmission by hardware while software already shuts down, which might cause dangling characters to show up in hardware queues when restarting the device. Signed-off-by:
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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:
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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:
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Oskar Schirmer authored
Signed-off-by:
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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:
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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
Signed-off-by:
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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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