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path: root/drivers/tty/serial
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2012-11-04SERIAL: omap: allow hardware assisted IXANY mode to be disabledRussell King1-0/+2
Nothing was clearing the UART_MCR_XONANY bit, so once the ixany mode gets set, there's no possibility to disable it. Clear this bit when IXANY mode is cleared. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2012-11-04SERIAL: omap: allow hardware assisted rts/cts modes to be disabledRussell King1-0/+7
There is nothing which clears the auto RTS/CTS bits, so once hardware flow control gets enabled, there's no possibility to disable it. So, clear these bits when CRTSCTS is cleared. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2012-11-04SERIAL: core: add throttle/unthrottle callbacks for hardware assisted flow controlRussell King1-4/+27
Add two callbacks for hardware assisted flow control; we need to know when the tty layers want us to stop and restart due to their buffer levels. Call a driver specific throttle/unthrottle function if and only if the driver indicates that it is using an enabled hardware assisted flow control method, otherwise fall back to the non-hardware assisted methods. Acked-by: Alan Cox <alan@linux.intel.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2012-11-04SERIAL: core: add hardware assisted h/w flow control supportRussell King1-0/+7
Ports which are handling h/w flow control in hardware must not have their RTS state altered depending on the tty's hardware-stopped state. Avoid this additional logic when setting the termios state. Acked-by: Alan Cox <alan@linux.intel.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2012-11-04SERIAL: core: add hardware assisted s/w flow control supportRussell King1-2/+14
Ports which are capable of handling s/w flow control in hardware to know when the s/w flow control termios settings are changed. Add a flag to allow the low level serial drivers to indicate that they support this, and these changes should be propagated to them. Acked-by: Alan Cox <alan@linux.intel.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2012-11-04SERIAL: core: use local variable uport in uart_set_termios()Russell King1-8/+9
This is to make the following change more clear. Acked-by: Alan Cox <alan@linux.intel.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2012-11-01tty: of_serial: fix return value check in of_platform_serial_setup()Wei Yongjun1-2/+2
In case of error, the function clk_get() returns ERR_PTR() and never returns NULL. The NULL test in the return value check should be replaced with IS_ERR(). dpatch engine is used to auto generate this patch. (https://github.com/weiyj/dpatch) Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-11-01serial:ifx6x60:Prevent data transfer when IFX6x60 port is shutdownchao bi2-1/+11
This patch is to implement following 2 places to avoid potential error when IFX6x60 port shutdown: 1) Clear Flag IFX_SPI_STATE_IO_AVAILABLE to disable data transfer when Modem port is shutdown; 2) Clear Flag IFX_SPI_STATE_IO_IN_PROGRESS and IFX_SPI_STATE_IO_READY when reopen port. This is because last port shutdown may happen when SPI/DMA transfer is in progress, if the last data transfer is not completed(for example due to modem reset), the Flag IFX_SPI_STATE_IO_IN_PROGRESS will be set forever, so when IFX port is activated again, IFX_SPI_STATE_IO_IN_PROGRESS will prevent transferring data forever. And if don't clear IFX_SPI_STATE_IO_READY, it may cause one more SPI frame transferring in spit there is not data need to be transfer. cc: liu chuansheng <chuansheng.liu@intel.com> cc: Chen Jun <jun.d.chen@intel.com> Signed-off-by: channing <chao.bi@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-10-30serial/arc-uart: Add new driverVineet Gupta3-0/+770
Driver for non-standard on-chip UART, instantiated in the ARC (Synopsys) FPGA Boards such as ARCAngel4/ML50x Signed-off-by: Vineet Gupta <vgupta@synopsys.com> Reviewed-by: Felipe Balbi <balbi@ti.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-10-30uart: add other serial core layer get attributesAlan Cox1-0/+145
Signed-off-by: Alan Cox <alan@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-10-30uart: tidy the uart_get_info APIAlan Cox1-14/+15
We pass both port and state because the original caller had both to hand. With all the attribute callers this won't be true so do the conversion in the function itself. The current callers all do lock/query/unlock. This won't be true for future set based cases but there are plenty of get ones that will exist so split the code with a helper for the future cases. Signed-off-by: Alan Cox <alan@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-10-30uart: update the sysfs handler to use uart_get_infoAlan Cox1-5/+5
The two patches needed are now in the tree. The first added the sysfs interface and directly accesses the uartclk. The second provides a proper interface for getting the values. Wire them together. This formes a basis for both get and set methods for any of the other uart properties and we can now fill them out further. Signed-off-by: Alan Cox <alan@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-10-30serial: 8250_pci: use module_pci_driver to simplify the codeWei Yongjun1-12/+1
Use the module_pci_driver() macro to make the code simpler by eliminating module_init and module_exit calls. dpatch engine is used to auto generate this patch. (https://github.com/weiyj/dpatch) Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-10-30serial: jsm: Convert jsm_printk to jsm_dbgJoe Perches4-109/+120
These printks should all be emitted at KERN_DEBUG level. Make them dependent on CONFIG_DEBUG or (#define DEBUG) simplify the code a bit. Add missing newlines where appropriate. Most all of these messages could be deleted too. Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-10-29Merge 3.7-rc3 into tty-nextGreg Kroah-Hartman1-6/+6
This merges the tty changes in 3.7-rc3 into tty-next Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-10-28Merge branch 'master' into for-nextJiri Kosina51-2765/+4865
Sync up with Linus' tree to be able to apply Cesar's patch against newer version of the code. Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2012-10-25of serial port driver - add clk_get_rate() supportMurali Karicheri1-6/+26
Currently this driver expects the clock-frequency attribute. This patch allows getting clock-frequency through clk driver API clk_get_rate() if clock-frequency attribute is not defined. So in the device bindings for serial device, one can add clocks phandle to refer to the clk device to get the rate. Signed-off-by: Murali Karicheri <m-karicheri2@ti.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-10-25serial: ifx6x60: del_timer_sync must not be called in interrupt context.Jun Chen1-1/+1
This patch make use of del_timer instead of del_timer_sync in the interrupt context. The spi_timer function don't use any resources that may release after running del_timer, so using the del_timer is also safe and enough in this context. Signed-off-by: Chen Jun <jun.d.chen@intel.com> Acked-by: Alan Cox <alan@linux.intel.com> Tested-by: Chuansheng Liu <chuansheng.liu@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-10-25serial: ifx6x60: add_timer is not safe in the mrdy_assert functionJun Chen1-3/+1
This patch make use of mod_timer instead of add_timer in the mrdy_assert function. Because the srdy interrupter can go high when we are running function mrdy_assert and mrdy_assert can be called by multi-entry. In our medfield platform, spi stress test can encounter this error logs triggered by the BUG_ON of add_timer function.This patch had been tested on our medfield platform. the scenario: CPU0 CPU1 mrdy_assert set_bit(IFX_SPI_STATE_TIMER_PENDING) ifx_spi_handle_srdy ... clear_bit(IFX_SPI_STATE_TIMER_PENDING) ... mrdy_assert set_bit(IFX_SPI_STATE_TIMER_PENDING) ... add_timer ... add_timer Cc: liu chuansheng <chuansheng.liu@intel.com> Cc: Bi Chao <chao.bi@intel.com> Signed-off-by: Chen Jun <jun.d.chen@intel.com> Acked-by: Alan Cox <alan@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-10-25serial: ifx6x60: different SPI word width configure requires different swap processchao bi2-10/+61
SPI protocol driver only provide one function (swap_buf()) to swap SPI data into big endian format, which is only available when SPI controller's word width is 16 bits. But word width could be configured as 8/16/32 bits, different word width configure should be mapped to different swap methods.This patch is to make SPI protocol driver choose the right swap function corresponding to SPI word width configuration. cc: liu chuansheng <chuansheng.liu@intel.com> cc: Chen Jun <jun.d.chen@intel.com> Signed-off-by: channing <chao.bi@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-10-25serial/amba-pl011: use devm_* managed resourcesLinus Walleij1-16/+9
This switches a bunch of allocation and remapping to use the devm_* garbage collected methods and cleans up the error path and remove() paths consequently. devm_ioremap() is only in <linux/io.h> so fix up the erroneous <asm/*> include as well. Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Tested-by: Domenico Andreoli <domenico.andreoli@linux.com> Acked-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-10-25serial: omap: Remove the hardcode serial_omap_console_ports array.Shubhrajyoti D1-1/+1
Currently the array serial_omap_console_ports is hard coded to 4. Make it depend on the maximum uart count. Post to [cfc55bc ARM: OMAP2+: serial: Change MAX_HSUART_PORTS to 6] the max ports is 6. Cc: AnilKumar Ch <anilkumar@ti.com> Signed-off-by: Shubhrajyoti D <shubhrajyoti@ti.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-10-25serial: omap: Remove the default setting of special characterShubhrajyoti D1-5/+1
Special character detect enable if enabled by default.Received data comparison with XOFF2 data happens by default. tty provides only XOFF1 no X0FF2 is provided so no need to enable check for XOFF2. Keeping this enabled might give some slow transfers due to dummy xoff2 comparison with xoff2 reset value. Since not all want the XOFF2 support lets not enable it by default. Signed-off-by: Shubhrajyoti D <shubhrajyoti@ti.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-10-25serial: omap: Make context_loss_cnt signedShubhrajyoti D1-4/+8
get_context_loss_count returns an int however it is stored in unsigned integer context_loss_cnt . This patch tries to make context_loss_cnt int. So that in case of errors the value (which may be negative) is not interpreted wrongly. In serial_omap_runtime_resume in case of errors returned by get_context_loss_count print a warning and do a restore. Signed-off-by: Shubhrajyoti D <shubhrajyoti@ti.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-10-25tty: Fix typo in tty driversMasanari Iida3-3/+3
Correct spelling typo in debug messages within tty drivers. Signed-off-by: Masanari Iida <standby24x7@gmail.com> Acked-by: Alan Cox <alan@linux.intel.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2012-10-24Revert "serial: omap: fix software flow control"Felipe Balbi1-6/+6
This reverts commit 957ee7270d632245b43f6feb0e70d9a5e9ea6cf6 (serial: omap: fix software flow control). As Russell has pointed out, that commit isn't fixing Software Flow Control at all, and it actually makes it even more broken. It was agreed to revert this commit and use Russell's latest UART patches instead. Cc: Russell King <linux@arm.linux.org.uk> Signed-off-by: Felipe Balbi <balbi@ti.com> Acked-by: Tony Lindgren <tony@atomide.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-10-24serial: clps711x: Cleanup driverAlexander Shiyan1-59/+46
This patch performs cleanup on clps711x serial driver. This include: - Change functions naming style. - Removed unused includes. - Removed unneeded comments. Signed-off-by: Alexander Shiyan <shc_work@mail.ru> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-10-24serial: clps711x: Fix TERMIOS-flags handlingAlexander Shiyan1-24/+12
Signed-off-by: Alexander Shiyan <shc_work@mail.ru> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-10-24serial: clps711x: Disable "break"-state before port startupAlexander Shiyan1-22/+7
Signed-off-by: Alexander Shiyan <shc_work@mail.ru> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-10-24serial: clps711x: Using resource-managed functionsAlexander Shiyan1-21/+16
Signed-off-by: Alexander Shiyan <shc_work@mail.ru> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-10-24serial: clps711x: Check for valid TTY in RX-interruptAlexander Shiyan1-30/+29
Signed-off-by: Alexander Shiyan <shc_work@mail.ru> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-10-24serial: clps711x: Fix break control handlingAlexander Shiyan1-1/+3
Signed-off-by: Alexander Shiyan <shc_work@mail.ru> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-10-24serial: clps711x: Return valid modem controls for port that not support itAlexander Shiyan1-6/+4
Signed-off-by: Alexander Shiyan <shc_work@mail.ru> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-10-24serial: clps711x: Improved TX FIFO handlingAlexander Shiyan1-8/+7
Signed-off-by: Alexander Shiyan <shc_work@mail.ru> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-10-24serial: clps711x: Using CPU clock subsystem for getting base UART speedAlexander Shiyan1-5/+15
Signed-off-by: Alexander Shiyan <shc_work@mail.ru> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-10-24serial: clps711x: Do not use "uart_port->unused" fieldAlexander Shiyan1-15/+17
Signed-off-by: Alexander Shiyan <shc_work@mail.ru> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-10-24serial: clps711x: Convert all static variables to dynamicAlexander Shiyan1-122/+89
This patch converts all static variables of clps711x serial driver to dynamic allocating. In this case we are should remove console_initcall() and declare console during driver registration. Early kernel messages can be retrieved by add "earlyprintk" option to the kernel command line. Signed-off-by: Alexander Shiyan <shc_work@mail.ru> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-10-24serial: clps711x: Add platform_driver interface to clps711x driverAlexander Shiyan1-6/+33
Signed-off-by: Alexander Shiyan <shc_work@mail.ru> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-10-24tty: serial: KGDB support for PXADenis V. Lunev1-0/+55
Actually, in order to support KGDB over serial console one must implement two callbacks for character polling. Clone them from 8250 driver with a bit of tuning. Signed-off-by: Denis V. Lunev <den@openvz.org> Signed-off-by: Marko Katic <dromede@gmail.com> CC: Eric Miao <eric.y.miao@gmail.com> CC: Russell King <linux@arm.linux.org.uk> Acked-by: Haojian Zhuang <haojian.zhuang@gmail.com> drivers/tty/serial/pxa.c | 55 ++++++++++++++++++++++++++++++++++++++++++++++ 1 files changed, 55 insertions(+), 0 deletions(-) Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-10-24x86: ce4100: allow second UART usageMaxime Bizon1-3/+3
The current CE4100 and 8250_pci code have both a limitation preventing the registration and usage of CE4100's second UART. This patch changes the platform code fixing up the UART port to work on a relative UART port base address, as well as the 8250_pci code to make it register 2 UART ports for CE4100 and pass the port index down to all consumers. Signed-off-by: Florian Fainelli <ffainelli@freebox.fr> Acked-by: Alan Cox <alan@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-10-24tty: serial: 8250_dw: Implement suspend/resumeJames Hogan1-0/+25
Implement suspend and resume callbacks for DesignWare 8250 driver. They're simple wrappers around serial8250_{suspend,resume}_port. Signed-off-by: James Hogan <james.hogan@imgtec.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-10-24serial: vt8500: fix possible memory leak in vt8500_serial_probe()Wei Yongjun1-4/+4
vt8500_port is malloced in vt8500_serial_probe() and should be freed before leaving from the error handling cases, otherwise it will cause memory leak. Fix it by move the allocation of vt8500_port after those test. dpatch engine is used to auto generate this patch. (https://github.com/weiyj/dpatch) Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn> Acked-by: Tony Prisk <linux@prisktech.co.nz> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-10-24tty/serial/8250: Make omap hardware workarounds local to 8250.hTony Lindgren2-6/+39
This allows us to get rid of the ifdefs in 8250.c. Cc: Alan Cox <alan@linux.intel.com> Signed-off-by: Tony Lindgren <tony@atomide.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-10-24serial/8250/8250_early: Prevent rounding error in uartclkAlexey Brodkin1-1/+1
Modify divisor to select the nearest baud rate divider rather than the lowest. It minimizes baud rate errors especially on low UART clock frequencies. For example, if uartclk is 33000000 and baud is 115200 the ratio is about 17.9 The current code selects 17 (5% error) but should select 18 (0.5% error). This 5% error in baud rate leads to garbage on receiving end, while 0.5% doesn't. The issue showed up when using the stock 8250 driver for Synopsys DW UART. This was on a FPGA with ~12MHz UART clock. When we enabled early serial, we saw garbage which was narrowed down to the rounding error. So the bug had been latent and it only showed up with such low clock rates. Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com> Acked-by: Alan Cox <alan@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-10-24serial: samsung: use clk_prepare_enable and clk_disable_unprepareThomas Abraham1-8/+8
Convert clk_enable/clk_disable to clk_prepare_enable/clk_disable_unprepare calls as required by common clock framework. Signed-off-by: Thomas Abraham <thomas.abraham@linaro.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-10-19Merge tag 'tty-3.7-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/ttyLinus Torvalds3-12/+13
Pull TTY fixes from Greg Kroah-Hartman: "Here are some tty and serial driver fixes for your 3.7-rc1 tree. Again, the UABI header file fixes, and a number of build and runtime serial driver bugfixes that solve problems people have been reporting (the staging driver is a tty driver, hence the fixes coming in through this tree.) All of these have been in the linux-next tree for a while. Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>" * tag 'tty-3.7-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty: staging: dgrp: check return value of alloc_tty_driver staging: dgrp: check for NULL pointer in (un)register_proc_table serial/8250_hp300: Missing 8250 register interface conversion bits UAPI: (Scripted) Disintegrate include/linux/hsi tty: serial: sccnxp: Fix bug with unterminated platform_id list staging: serial: dgrp: Add missing #include <linux/uaccess.h> serial: sccnxp: Allows the driver to be compiled as a module tty: Fix bogus "callbacks suppressed" messages net, TTY: initialize tty->driver_data before usage
2012-10-15serial/8250_hp300: Missing 8250 register interface conversion bitsGeert Uytterhoeven1-10/+10
commit 2655a2c76f80d91da34faa8f4e114d1793435ed3 ("8250: use the 8250 register interface not the legacy one") forgot to fully switch one instance of struct uart_port to struct uart_8250_port, causing the following compile failure: drivers/tty/serial/8250/8250_hp300.c: In function ‘hpdca_init_one’: drivers/tty/serial/8250/8250_hp300.c:174: error: ‘uart’ undeclared (first use in this function) drivers/tty/serial/8250/8250_hp300.c:174: error: (Each undeclared identifier is reported only once drivers/tty/serial/8250/8250_hp300.c:174: error: for each function it appears in.) This went unnoticed in -next, as CONFIG_HPDCA is not set to y by allmodconfig. Reported-by: Fengguang Wu <fengguang.wu@intel.com> Cc: Alan Cox <alan@linux.intel.com> Cc: Philip Blundell <philb@gnu.org> Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-10-14Merge 3.7-rc1 into tty-linusGreg Kroah-Hartman1-1/+2
This syncs up the tty-linus branch to the latest in Linus's tree to get all of the UAPI stuff needed for the next set of patches to merge. Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-10-15sh: Fix up more fallout from pointless ARM __iomem churn.Paul Mundt1-1/+2
It was already pointed out how to fix these cases before the offending patches were merged, but unsurprisingly, that didn't happen. As this change is entirely superfluous to begin with, simply shut things up by casting everything away. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2012-10-13Merge tag 'for_linus-3.7' of git://git.kernel.org/pub/scm/linux/kernel/git/jwessel/kgdbLinus Torvalds1-1/+2
Pull KGDB/KDB fixes and cleanups from Jason Wessel: "Cleanups - Clean up compile warnings in kgdboc.c and x86/kernel/kgdb.c - Add module event hooks for simplified debugging with gdb Fixes - Fix kdb to stop paging with 'q' on bta and dmesg - Fix for data that scrolls off the vga console due to line wrapping when using the kdb pager New - The debug core registers for kernel module events which allows a kernel aware gdb to automatically load symbols and break on entry to a kernel module - Allow kgdboc=kdb to setup kdb on the vga console" * tag 'for_linus-3.7' of git://git.kernel.org/pub/scm/linux/kernel/git/jwessel/kgdb: tty/console: fix warnings in drivers/tty/serial/kgdboc.c kdb,vt_console: Fix missed data due to pager overruns kdb: Fix dmesg/bta scroll to quit with 'q' kgdboc: Accept either kbd or kdb to activate the vga + keyboard kdb shell kgdb,x86: fix warning about unused variable mips,kgdb: fix recursive page fault with CONFIG_KPROBES kgdb: Add module event hooks
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