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path: root/drivers/tty/serial
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2016-05-17Merge branch 'for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial Pull trivial tree updates from Jiri Kosina. * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial: (21 commits) gitignore: fix wording mfd: ab8500-debugfs: fix "between" in printk memstick: trivial fix of spelling mistake on management cpupowerutils: bench: fix "average" treewide: Fix typos in printk IB/mlx4: printk fix pinctrl: sirf/atlas7: fix printk spelling serial: mctrl_gpio: Grammar s/lines GPIOs/line GPIOs/, /sets/set/ w1: comment spelling s/minmum/minimum/ Blackfin: comment spelling s/divsor/divisor/ metag: Fix misspellings in comments. ia64: Fix misspellings in comments. hexagon: Fix misspellings in comments. tools/perf: Fix misspellings in comments. cris: Fix misspellings in comments. c6x: Fix misspellings in comments. blackfin: Fix misspelling of 'register' in comment. avr32: Fix misspelling of 'definitions' in comment. treewide: Fix typos in printk Doc: treewide : Fix typos in DocBook/filesystem.xml ...
2016-04-19Revert "serial: 8250: Add hardware dependency to RT288X option"Greg Kroah-Hartman
This reverts commit 8d2acdb9fc3a544ab0442634531834d6007b5467. It's causing problems, and somehow I missed that Peter didn't like it at all :( So revert it for now until it gets sorted out. Reported-by: Mason <slash.tmp@free.fr> Cc: Peter Hurley <peter@hurleysoftware.com> Cc: Jean Delvare <jdelvare@suse.de> Cc: Mans Rullgard <mans@mansr.com> Cc: Jiri Slaby <jslaby@suse.com> Cc: John Crispin <blogic@openwrt.org> Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org
2016-04-19tty/serial/8250: fix RS485 half-duplex RXYegor Yefremov
When in half-duplex mode RX will be disabled before TX, but not enabled after deactivating transmitter. This patch enables UART_IER_RLSI and UART_IER_RDI interrupts after TX is over. Cc: Matwey V. Kornilov <matwey@sai.msu.ru> Signed-off-by: Yegor Yefremov <yegorslists@googlemail.com> Fixes: e490c9144cfa ("tty: Add software emulated RS485 support for 8250") Acked-by: Matwey V. Kornilov <matwey@sai.msu.ru> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-04-19Revert "serial-uartlite: Constify uartlite_be/uartlite_le"Sudip Mukherjee
This reverts commit 2905697a82eaf20606ced164d853b52d1b94aaa8. The commit introduced two build warnings: drivers/tty/serial/uartlite.c: In function ‘ulite_request_port’: drivers/tty/serial/uartlite.c:348:21: warning: assignment discards ‘const’ qualifier from pointer target type port->private_data = &uartlite_be; ^ drivers/tty/serial/uartlite.c:354:22: warning: assignment discards ‘const’ qualifier from pointer target type port->private_data = &uartlite_le; ^ Signed-off-by: Sudip Mukherjee <sudip.mukherjee@codethink.co.uk> Cc: Maarten Brock <m.brock@vanmierlo.com> Cc: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-04-18serial: mctrl_gpio: Grammar s/lines GPIOs/line GPIOs/, /sets/set/Geert Uytterhoeven
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2016-03-07serial: 8250: describe CONFIG_SERIAL_8250_RSAMaciej S. Szmigiero
CONFIG_SERIAL_8250_RSA has waited for a long time to have meaningful help text so let's finally describe what this option actually does. Signed-off-by: Maciej S. Szmigiero <mail@maciej.szmigiero.name> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-03-07serial: samsung: optimize UART rx fifo access routineYoungmin Nam
This patch optimizes UART rx fifo access routine by reading UART SFR when necessary. At first, the "fifocnt" variable will be initialized as Rx FIFO count. So we don't need to access UFSTAT(FIFO status) register every time to check FIFO count because we know that count with "fifocnt". After all data were read out from Rx FIFO, the "fifocnt" will be set as 0. Lastly, UFSTAT will be accessed again to check whether the data remains by any chance. Signed-off-by: Youngmin Nam <ym0914@gmail.com> Reviewed-by: Jung-Ick Guack <ji.guack@samsung.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-03-07serial: pl011: add mark/space parity supportEd Spiridonov
PL011 UART has hardware mark/space parity ability, this trivial patch adds support for it. Tested on Raspberry Pi v1, v2 (BCM2835 and BCM2836) Signed-off-by: Ed Spiridonov <edo.rus@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-03-07tty: serial: 8250: add MOXA Smartio MUE boards supportMathieu OTHACEHE
Add support for : - CP-102E: 2 ports RS232 PCIE card - CP-102EL: 2 ports RS232 PCIE card - CP-132EL: 2 ports RS422/485 PCIE card - CP-114EL: 4 ports RS232/422/485 PCIE card - CP-104EL-A: 4 ports RS232 PCIE card - CP-168EL-A: 8 ports RS232 PCIE card - CP-118EL-A: 8 ports RS232/422/485 PCIE card - CP-118E-A: 8 ports RS422/485 PCIE card - CP-138E-A: 8 ports RS422/485 PCIE card - CP-134EL-A: 4 ports RS422/485 PCIE card - CP-116E-A (A): 8 ports RS232/422/485 PCIE card - CP-116E-A (B): 8 ports RS232/422/485 PCIE card This patch is based on information extracted from vendor mxupcie driver available on MOXA website. I was able to test it on a CP-168EL-A on PC. Signed-off-by: Mathieu OTHACEHE <m.othacehe@gmail.com> Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-03-07serial: 8250: convert drivers to use up_to_u8250p()Andy Shevchenko
up_to_u8250p() casts struct uart_port * to struct uart_8250_port *. Update code to use it instead of open coded variant. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-03-07serial: 8250/mediatek: fix building with SERIAL_8250=mArnd Bergmann
The Mediatek 8250 driver has a 'bool' Kconfig symbol, but that breaks when SERIAL_8250 is a loadable module: drivers/tty/built-in.o: In function `mtk8250_set_termios': :(.text+0x1bee8): undefined reference to `serial8250_do_set_termios' :(.text+0x1bf10): undefined reference to `uart_get_baud_rate' :(.text+0x1c09c): undefined reference to `uart_get_divisor' drivers/tty/built-in.o: In function `mtk8250_do_pm': :(.text+0x1c0d0): undefined reference to `serial8250_do_pm' drivers/tty/built-in.o: In function `mtk8250_probe': :(.text+0x1c2e4): undefined reference to `serial8250_register_8250_port' serial/8250/8250_mtk.c:287:242: error: data definition has no type or storage class [-Werror] serial/8250/8250_mtk.c:287:122: error: 'mtk8250_platform_driver_init' defined but not used [-Werror=unused-function] This changes the symbol to a 'tristate', so the dependency on SERIAL_8250 also works when that is set to 'm'. To actually build the driver, we also need to include <linux/module.h>. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Matthias Brugger <matthias.bgg@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-03-07serial: 8250/ingenic: fix building with SERIAL_8250=mArnd Bergmann
The Ingenic 8250 driver has a 'bool' Kconfig symbol, but that breaks when SERIAL_8250 is a loadable module: drivers/tty/built-in.o: In function `ingenic_uart_probe': 8250_ingenic.c:(.text+0x1c1a0): undefined reference to `serial8250_register_8250_port' This changes the symbol to a 'tristate', plus a dependency on SERIAL_8250, which makes it work again. Unlike the other soc-specific backends, this one has no dependency on an architecture or a platform. I'm adding a dependency on MIPS || COMPILE_TEST as well here, to avoid showing the driver on architectures that are not interested in it. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-03-07serial: 8250/uniphier: fix modular buildArnd Bergmann
The newly added uniphier serial port driver fails to build as a loadable module when the base 8250 driver is built-in and its console support enabled: ERROR: "early_serial8250_setup" [drivers/tty/serial/8250/8250_uniphier.ko] undefined! This changes the driver to only provide the early console support if it is built-in itself as well. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-03-07Revert "drivers/tty/serial: make 8250/8250_ingenic.c explicitly non-modular"Arnd Bergmann
This reverts commit cafe1ac64023 ("drivers/tty: make serial 8250_ingenic.c explicitly non-modular"), which attempted to remove dead code but did not have the desired effect when the main 8250 driver was a loadable module itself. This would normally result in a link error, but as the entire drivers/tty/serial/8250/ directory is only entered when CONFIG_SERIAL_8250 is set, we never notice that the driver does not get built in this configuration. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-03-07Revert "drivers/tty/serial: make 8250/8250_mtk.c explicitly non-modular"Arnd Bergmann
This reverts commit d72d391c126e ("drivers/tty/serial: make 8250/8250_mtk.c explicitly non-modular"), which intended to remove dead code but did not have the desired effect when the main 8250 driver was a module itself. This would normally result in a link error, but as the entire drivers/tty/serial/8250/ directory is only entered when CONFIG_SERIAL_8250 is set, we never notice that the driver does not get built in this configuration. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Matthias Brugger <matthias.bgg@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-03-07serial: mvebu-uart: initial support for Armada-3700 serial portWilson Ding
Armada-3700's uart is a simple serial port, which doesn't support. Configuring the modem control lines. The uart port has a 32 bytes Tx FIFO and a 64 bytes Rx FIFO The uart driver implements the uart core operations. It also support the system (early) console based on Armada-3700's serial port. Known Issue: The uart driver currently doesn't support clock programming, which means the baud-rate stays with the default value configured by the bootloader at boot time [gregory.clement@free-electrons.com: Rewrite many part which are too long to enumerate] Signed-off-by: Wilson Ding <dingwei@marvell.com> Signed-off-by: Nadav Haklai <nadavh@marvell.com> Signed-off-by: Gregory CLEMENT <gregory.clement@free-electrons.com> Acked-by: Rob Herring <robh@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-03-07serial: mctrl_gpio: Add missing module licenseRomain Izard
As the mctrl_gpio driver can be built as a module, it needs to have its license specified with MODULE_LICENSE. Otherwise, it cannot access required symbols exported through EXPORT_SYMBOL_GPL. Signed-off-by: Romain Izard <romain.izard.pro@gmail.com> Acked-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-03-07serial: ifx6x60: avoid uninitialized variable useArnd Bergmann
gcc warns about a potential use of an uninitialized variable in this driver: drivers/tty/serial/ifx6x60.c: In function 'ifx_spi_complete': drivers/tty/serial/ifx6x60.c:713:6: warning: 'more' may be used uninitialized in this function [-Wmaybe-uninitialized] if (more || ifx_dev->spi_more || queue_length > 0 || Unlike a lot of other such warnings, this one is correct and describes an actual problem in the handling of the "IFX_SPI_HEADER_F" result code. This appears to be a result from a restructuring of the driver that dates back to before it was merged in the kernel, so it's impossible to know where it went wrong. I also don't know what that result code means, so I have no idea if setting 'more' to zero is the correct solution, but at least it makes the behavior reproducible rather than depending on whatever happens to be on the kernel stack. This patch initializes the 'more' variable to zero in each of the three code paths that could result in undefined behavior before, which is more explicit than initializing it at the start of the function. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-03-07tty/serial: at91: fix bad offset for UART timeout registerLudovic Desroches
With SAMA5D2, the UART has hw timeout but the offset of the register to define this value is not the same as the one for USART. When using the new UART, the value of this register was 0 so we never get timeout irqs. It involves that when using DMA, we were stuck until the execution of the dma callback which happens when a buffer is full (so after receiving 2048 bytes). Signed-off-by: Ludovic Desroches <ludovic.desroches@atmel.com> Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-03-07tty/serial: at91: restore dynamic driver bindingRomain Izard
In commit c39dfebc7798956fd2140ae6321786ff35da30c3, the modular support code for atmel_serial was removed, as the driver cannot be built as a module. Because no use case was proposed, the dynamic driver binding support was removed as well. The atmel_serial driver can manage up to 7 serial controllers, which are multiplexed with other functions. For example, in the Atmel SAMA5D2, the Flexcom controllers can work as USART, SPI or I2C controllers, and on all Atmel devices serial lines can be reconfigured as GPIOs. My use case uses GPIOs to transfer a firmware update using a custom protocol on the lines used as a serial port during the normal life of the device. If it is not possible to unbind the atmel_serial driver, the GPIO lines remain reserved and prevent this case from working. This patch reinstates the atmel_serial_remove function, and fixes it as it failed to clear the "clk" field on removal, triggering an oops when a device was bound again after being unbound. Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com> Signed-off-by: Romain Izard <romain.izard.pro@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-03-07serial: 8250: Add hardware dependency to RT288X optionJean Delvare
Kconfig option SERIAL_8250_RT288X seems to be only relevant on MIPS platforms, so do not present it on other architectures, unless build-testing. Signed-off-by: Jean Delvare <jdelvare@suse.de> Cc: Mans Rullgard <mans@mansr.com> Cc: Jiri Slaby <jslaby@suse.com> Acked-by: John Crispin <blogic@openwrt.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-03-07serial-uartlite: Configure for rising edge irq trigger.Maarten Brock
This device generates a short rising pulse on the interrupt request line. Signed-off-by: Maarten Brock <m.brock@vanmierlo.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-03-07serial-uartlite: Spinlock inside the loop.Maarten Brock
Better to hold the spinlock as short as possible. Signed-off-by: Maarten Brock <m.brock@vanmierlo.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-03-07serial-uartlite: Constify uartlite_be/uartlite_leMaarten Brock
Made uartlite_be and uartlite_le constants. Signed-off-by: Maarten Brock <m.brock@vanmierlo.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-03-07serial-uartlite: Enlarge maximum nr of devices to 16.Maarten Brock
This device is ideal to use when you need a lot of uarts in your FPGA. Try not to force all those users to patch their kernel. Signed-off-by: Maarten Brock <m.brock@vanmierlo.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-03-07serial: 8250_pci: all known Braswell ports are 1 channelAndy Shevchenko
There is no need to have channel offset defined since all BayTrail and Braswell ports are 1 channel. Remove unneeded definition. While here, remove comment which has no value. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-03-07serial: 8250_pci: convert to pcim_*() APIAndy Shevchenko
The managed API provides a better approach to help with acquiring and releasing resources. Besides that error handling becomes simpler. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-03-07serial: 8250_dw: remove leftover definitionsAndy Shevchenko
The clocks are managed through clk-fractional-divider.c module, and thus CLK framework takes care about it. Remove letfovers from this driver. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-03-07serial: 8250_dw: remove redundant 'else' keywordAndy Shevchenko
When the main branch contains return statement the 'else' keyword is not needed. Remove it here. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-03-07serial: xuartps: Enable OF earlycon supportMichal Simek
Support early console setup via DT for all listed compatible strings. Remove EARLYCON_DECLARE which was done by: "Use common framework for earlycon declarations" (sha1: 2eaa790989e03900298ad24f77f1086dbbc1aebd) when OF_EARLYCON_DECLARE is defined. Signed-off-by: Michal Simek <michal.simek@xilinx.com> Reviewed-by: Peter Hurley <peter@hurleysoftware.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-03-07tty: sh-sci: Use ARCH_RENESASSimon Horman
Make use of ARCH_RENESAS in place of ARCH_SHMOBILE. This is part of an ongoing process to migrate from ARCH_SHMOBILE to ARCH_RENESAS the motivation for which being that RENESAS seems to be a more appropriate name than SHMOBILE for the majority of Renesas ARM based SoCs. Signed-off-by: Simon Horman <horms+renesas@verge.net.au> Acked-by: Geert Uytterhoeven <geert+renesas@glider.be> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-03-07serial: sh-sci: Remove redundant instances of EARLYCON_DECLARE()Geert Uytterhoeven
As of commit 2eaa790989e03900 ("earlycon: Use common framework for earlycon declarations") it is no longer needer to specify both EARLYCON_DECLARE() and OF_EARLYCON_DECLARE(). Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Reviewed-by: Peter Hurley <peter@hurleysoftware.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-03-07tty: amba-pl011: don't dereference NULL platform dataRobin Murphy
When only a TX DMA channel is specified in DT, pl011_dma_probe() falls back to looking for the optional RX channel in platform data. What it doesn't do is check whether that platform data actually exists... Add the missing check to avoid crashing the kernel. Signed-off-by: Robin Murphy <robin.murphy@arm.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-03-07tty: serial: Use GFP_ATOMIC instead of GFP_KERNEL in serial8250_em485_init()Matwey V. Kornilov
serial8250_em485_init() is supposed to be protected with p->port.lock spinlock. This may lead to issues when kmalloc sleeps, so it is better to use GFP_ATOMIC in this spinlocked context. Fixes: e490c9144cfa ("tty: Add software emulated RS485 support for 8250") Reported-by: Ильяс Гасанов <torso.nafi@gmail.com> Signed-off-by: Matwey V. Kornilov <matwey@sai.msu.ru> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-03-07tty: serial: 8250: Cleanup p->em485 in serial8250_unregister_portMatwey V. Kornilov
Formally, currently there is no memory leak, but if serial8250_ports[line] is reused with other 8250 driver, then em485 will be already activated and it will cause issues. Fixes: e490c9144cfa ("tty: Add software emulated RS485 support for 8250") Signed-off-by: Matwey V. Kornilov <matwey@sai.msu.ru> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-03-07Revert "sc16is7xx: implemented get_mctrl"Greg Kroah-Hartman
This reverts commit a3f0b77f36ca5c5871fb8daf7e66fa409abe1ed5. Maarten writes: It appears to be wrong and I don't have a good idea how to fix it yet. Cc: Maarten Brock <m.brock@vanmierlo.com> Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org
2016-02-14sc16is7xx: implemented get_mctrlMaarten Brock
Add support for manual getting the modem control lines. Signed-off-by: Maarten Brock <m.brock@vanmierlo.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-02-14sc16is7xx: implemented set_mctrlMaarten Brock
Add support for manual setting the modem control lines. Signed-off-by: Maarten Brock <m.brock@vanmierlo.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-02-14tty/serial: digicolor: Fix bad usage of IS_ERR_VALUEGuenter Roeck
IS_ERR_VALUE() assumes that its parameter is an unsigned long. It can not be used to check if an unsigned int reflects an error. Doing so can result in the following build warning. drivers/tty/serial/digicolor-usart.c: In function ‘digicolor_uart_probe’: include/linux/err.h:21:38: warning: comparison is always false due to limited range of data type drivers/tty/serial/digicolor-usart.c:485:6: note: in expansion of macro ‘IS_ERR_VALUE’ If that warning is seen, an error return from platform_get_irq() is missed. Signed-off-by: Guenter Roeck <linux@roeck-us.net> Acked-by: Baruch Siach <baruch@tkos.co.il> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-02-14serial: clps711x: Fix bad usage of IS_ERR_VALUEGuenter Roeck
IS_ERR_VALUE() assumes that its parameter is an unsigned long. It can not be used to check if an unsigned int reflects an error. Doing so can result in the following build warning. drivers/tty/serial/clps711x.c: In function ‘uart_clps711x_probe’: include/linux/err.h:21:38: warning: comparison is always false due to limited range of data type drivers/tty/serial/clps711x.c:471:6: note: in expansion of macro ‘IS_ERR_VALUE’ If that warning is seen, an error return from platform_get_irq() is missed. Use a temporary variable to check for errors from platform_get_irq(). Also don't use IS_ERR_VALUE() to check if an integer variable is < 0. The variable can be checked directly in that case. Signed-off-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-02-14serial: bcm2835: fix unsigned int issue with irqMartin Sperl
Fixes error condition check when requesting the irq, that would not trigger because of uart_port.irq being defined as unsigned int. Reported by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Martin Sperl <kernel@martin.sperl.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-02-14serial: 8250_early: Add earlycon support for TegraJon Hunter
Declare an OF early console for Tegra so that the early console device can be specified via the "stdout-path" property in device-tree. Signed-off-by: Jon Hunter <jonathanh@nvidia.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-02-148250: mediatek: mark PM functions as __maybe_unusedArnd Bergmann
The mtk8250_runtime_suspend function is not used when runtime PM is disabled, so we get a warning about an unused function: drivers/tty/serial/8250/8250_mtk.c:119:12: error: 'mtk8250_runtime_suspend' defined but not used [-Werror=unused-function] static int mtk8250_runtime_suspend(struct device *dev) This marks all the PM functions as __maybe_unused to avoid the warning, and removes the #ifdef around the PM_SLEEP functions for consistency. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Matthias Brugger <matthias.bgg@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-02-14tty: serial: meson: Add support for XTAL clock inputAndreas Färber
Fix the baudrate calculation for 24 MHz XTAL clock found on gxbb platforms. Signed-off-by: Andreas Färber <afaerber@suse.de> Acked-by: Carlo Caione <carlo@endlessm.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-02-14Merge 4.5-rc4 into tty-nextGreg Kroah-Hartman
We want the fixes in here, and this resolves a merge error in tty_io.c Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-02-07Revert "8250: uniphier: allow modular build with 8250 console"Greg Kroah-Hartman
This reverts commit d56edd7ed0ed46a8043ee3040ededbd190818ccf, it shouldn't have been applied, it was fixed properly with commit 71f50c6d9a2276f3ec85384bffe2aee1962f4669 ("of: drop symbols declared by _OF_DECLARE() from modules") Reported-by: Masahiro Yamada <yamada.masahiro@socionext.com> Cc: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-02-07tty: serial: jsm_tty: fixed redundant variable issue.Jakob Østergaard Jensen
The variable "len" gets assigned once and it's value copied to "n", which is then used for the rest of the function. This patch fixes the unnecessary variable reassignment by using "len" throughout the function instead. Signed-off-by: Jakob Østergaard Jensen <jakob.jensen.91@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-02-06tty: serial: 8250: Add generic port init macroAnton Wuerfel
This patch removes redundant 8250 port initialization macros and replaces them by a single generic base-macro, which is specialized as needed. Signed-off-by: Anton Würfel <anton.wuerfel@fau.de> Signed-off-by: Phillip Raffeck <phillip.raffeck@fau.de> Suggested-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Cc: linux-kernel@i4.cs.fau.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-02-06tty: serial: 8250: Fix indentation warningsAnton Wuerfel
Checkpatch complains about incorrect indentation of switch/case statements. This patch fixes the corresponding warnings. Additionally some indentation is changed to match the correct format specified in the Linux Kernel Coding Style. Signed-off-by: Anton Würfel <anton.wuerfel@fau.de> Signed-off-by: Phillip Raffeck <phillip.raffeck@fau.de> Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Cc: linux-kernel@i4.cs.fau.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-02-06tty: serial: 8250: Merge duplicate conditionsAnton Wuerfel
This patch refactors a switch case statement by merging an if condition in the default case into an identical condition right after the switch statement. This comes with a slight change in behaviour: If pci_netmos_9900_numports returns 0, an additional warning is printed. Signed-off-by: Anton Würfel <anton.wuerfel@fau.de> Signed-off-by: Phillip Raffeck <phillip.raffeck@fau.de> Suggested-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Cc: linux-kernel@i4.cs.fau.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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