linux/drivers/tty/serial, branch v5.3

kgdboc: disable the console lock when in kgdb

2019-07-30T15:39:39Z

After commit ddde3c18b700 ("vt: More locking checks") kdb / kgdb has become useless because my console is filled with spews of: WARNING: CPU: 0 PID: 0 at .../drivers/tty/vt/vt.c:3846 con_is_visible+0x50/0x74 CPU: 0 PID: 0 Comm: swapper/0 Not tainted 5.3.0-rc1+ #48 Hardware name: Rockchip (Device Tree) Backtrace: [] (dump_backtrace) from [] (show_stack+0x20/0x24) [] (show_stack) from [] (dump_stack+0xb0/0xd0) [] (dump_stack) from [] (__warn+0xec/0x11c) [] (__warn) from [] (warn_slowpath_null+0x4c/0x58) [] (warn_slowpath_null) from [] (con_is_visible+0x50/0x74) [] (con_is_visible) from [] (con_scroll+0x108/0x1ac) [] (con_scroll) from [] (lf+0x44/0x88) [] (lf) from [] (vt_console_print+0x1a4/0x2bc) [] (vt_console_print) from [] (vkdb_printf+0x420/0x8a4) [] (vkdb_printf) from [] (kdb_printf+0x44/0x60) [] (kdb_printf) from [] (kdb_main_loop+0xf4/0x6e0) [] (kdb_main_loop) from [] (kdb_stub+0x268/0x398) [] (kdb_stub) from [] (kgdb_cpu_enter+0x1f8/0x674) [] (kgdb_cpu_enter) from [] (kgdb_handle_exception+0x1c4/0x1fc) [] (kgdb_handle_exception) from [] (kgdb_compiled_brk_fn+0x30/0x3c) [] (kgdb_compiled_brk_fn) from [] (do_undefinstr+0x180/0x1a0) [] (do_undefinstr) from [] (__und_svc_finish+0x0/0x3c) ... [] (kgdb_breakpoint) from [] (sysrq_handle_dbg+0x58/0x6c) [] (sysrq_handle_dbg) from [] (__handle_sysrq+0xac/0x154) Let's disable this warning when we're in kgdb to avoid the spew. The whole system is stopped when we're in kgdb so we can't exactly wait for someone else to drop the lock. Presumably the best we can do is to disable the warning and hope for the best. Fixes: ddde3c18b700 ("vt: More locking checks") Cc: Daniel Vetter Signed-off-by: Douglas Anderson Link: https://lore.kernel.org/r/20190725183551.169208-1-dianders@chromium.org Signed-off-by: Greg Kroah-Hartman

tty: serial: netx: Delete driver

2019-07-25T10:05:28Z

The Netx ARM machine was deleted from the kernel. This driver had no users and has to go. Cc: Robert Schwebel Cc: Sascha Hauer Signed-off-by: Linus Walleij Signed-off-by: Arnd Bergmann Link: https://lore.kernel.org/r/20190722065146.4844-1-linus.walleij@linaro.org Signed-off-by: Greg Kroah-Hartman

Merge tag 'armsoc-soc' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc

2019-07-20T00:05:08Z

Pull ARM SoC platform updates from Olof Johansson: "SoC platform changes. Main theme this merge window: - The Netx platform (Netx 100/500) platform is removed by Linus Walleij-- the SoC doesn't have active maintainers with hardware, and in discussions with the vendor the agreement was that it's OK to remove. - Russell King has a series of patches that cleans up and refactors SA1101 and RiscPC support" * tag 'armsoc-soc' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc: (47 commits) ARM: stm32: use "depends on" instead of "if" after prompt ARM: sa1100: convert to common clock framework ARM: exynos: Cleanup cppcheck shifting warning ARM: pxa/lubbock: remove lubbock_set_misc_wr() from global view ARM: exynos: Only build MCPM support if used arm: add missing include platform-data/atmel.h ARM: davinci: Use GPIO lookup table for DA850 LEDs ARM: OMAP2: drop explicit assembler architecture ARM: use arch_extension directive instead of arch argument ARM: imx: Switch imx7d to imx-cpufreq-dt for speed-grading ARM: bcm: Enable PINCTRL for ARCH_BRCMSTB ARM: bcm: Enable ARCH_HAS_RESET_CONTROLLER for ARCH_BRCMSTB ARM: riscpc: enable chained scatterlist support ARM: riscpc: reduce IRQ handling code ARM: riscpc: move RiscPC assembly files from arch/arm/lib to mach-rpc ARM: riscpc: parse video information from tagged list ARM: riscpc: add ecard quirk for Atomwide 3port serial card MAINTAINERS: mvebu: Add git entry soc: ti: pm33xx: Add a print while entering RTC only mode with DDR in self-refresh ARM: OMAP2+: Make some variables static ...

Merge branch 'for-arm-soc' of git://git.armlinux.org.uk/~rmk/linux-arm into arm/soc

2019-07-16T00:29:45Z

* 'for-arm-soc' of git://git.armlinux.org.uk/~rmk/linux-arm: (21 commits) ARM: sa1100: convert to common clock framework ARM: riscpc: enable chained scatterlist support ARM: riscpc: reduce IRQ handling code ARM: riscpc: move RiscPC assembly files from arch/arm/lib to mach-rpc ARM: riscpc: parse video information from tagged list ARM: riscpc: add ecard quirk for Atomwide 3port serial card ARM: sa1100/neponset: convert serial to use gpiod APIs ARM: sa1100/hackkit: remove empty serial mctrl functions ARM: sa1100/badge4: remove commented out modem control initialisers ARM: sa1100/h3xxx: convert serial to gpiod APIs ARM: sa1100/assabet: convert serial to gpiod APIs serial: sa1100: add note about modem control signals serial: sa1100: add support for mctrl gpios ARM: riscpc: dma: use __iomem pointers for writing DMA ARM: riscpc: dma: improve address/length writing ARM: riscpc: dma: make state a local variable ARM: riscpc: dma: eliminate "cur_sg" scatterlist usage ARM: riscpc: fix DMA ARM: riscpc: fix ecard printing ARM: riscpc: fix lack of keyboard interrupts after irq conversion ... Signed-off-by: Olof Johansson

docs: serial: move it to the driver-api

2019-07-15T14:03:03Z

The contents of this directory is mostly driver-api stuff. Signed-off-by: Mauro Carvalho Chehab

docs: arm: convert docs to ReST and rename to *.rst

2019-07-15T12:20:24Z

Converts ARM the text files to ReST, preparing them to be an architecture book. The conversion is actually: - add blank lines and identation in order to identify paragraphs; - fix tables markups; - add some lists markups; - mark literal blocks; - adjust title markups. At its new index.rst, let's add a :orphan: while this is not linked to the main index.rst file, in order to avoid build warnings. Signed-off-by: Mauro Carvalho Chehab Reviewed-by Corentin Labbe # For sun4i-ss

Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc

2019-07-13T23:04:19Z

Pull sparc updates from David Miller: "Just a few small changes: - Fix console naming inconsistency with hypervisor consoles, from John Paul Adrian Glaubitz - Fix userland compilation due to use of u_int, from Masahiro Yamada" * git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc: sparc64: Add missing newline at end of file sparc: fix unknown type name u_int in uapi header sparc: configs: Remove useless UEVENT_HELPER_PATH sparc: Remove redundant copy of the LGPL-2.0 sunhv: Fix device naming inconsistency between sunhv_console and sunhv_reg

tty: serial: fsl_lpuart: add imx8qxp support

2019-07-04T13:53:45Z

The lpuart of imx8ulp is basically the same as imx7ulp, but it has new feature support based on imx7ulp, like it can assert a DMA request on EOP(end-of-packet). imx8ulp lpuart use two clocks, one is ipg bus clock that is used to access registers, the other is baud clock that is used to transmit-receive data. Signed-off-by: Fugang Duan Link: https://lore.kernel.org/r/20190704134007.2316-1-fugang.duan@nxp.com Signed-off-by: Greg Kroah-Hartman

serial: imx: set_termios(): preserve RTS state

2019-07-03T17:35:42Z

imx_set_termios() cleared RTS on every call, now fixed. Reviewed-by: Sascha Hauer Tested-by: Sascha Hauer Signed-off-by: Sergey Organov Link: https://lore.kernel.org/r/1561558293-7683-5-git-send-email-sorganov@gmail.com Signed-off-by: Greg Kroah-Hartman

serial: imx: set_termios(): clarify RTS/CTS bits calculation

2019-07-03T17:35:41Z

Avoid repeating the same code for rs485 twice. Make it obvious we clear CRTSCTS bit in termios->c_cflag whenever sport->have_rtscts is false. Make it obvious we clear UCR2_IRTS whenever CRTSCTS is set. Reviewed-by: Sascha Hauer Tested-by: Sascha Hauer Signed-off-by: Sergey Organov Link: https://lore.kernel.org/r/1561558293-7683-4-git-send-email-sorganov@gmail.com Signed-off-by: Greg Kroah-Hartman