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* serial: 8250_uniphier: Switch to use uart_read_port_properties()Andy Shevchenko2024-03-051-13/+4
| | | | | | | | | | | Since we have now a common helper to read port properties use it instead of sparse home grown solution. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Reviewed-by: Kunihiko Hayashi <hayashi.kunihiko@socionext.com> Tested-by: Kunihiko Hayashi <hayashi.kunihiko@socionext.com> Link: https://lore.kernel.org/r/20240304123035.758700-15-andriy.shevchenko@linux.intel.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* serial: 8250_tegra: Switch to use uart_read_port_properties()Andy Shevchenko2024-03-051-17/+9
| | | | | | | | | Since we have now a common helper to read port properties use it instead of sparse home grown solution. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Link: https://lore.kernel.org/r/20240304123035.758700-14-andriy.shevchenko@linux.intel.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* serial: 8250_pxa: Switch to use uart_read_port_properties()Andy Shevchenko2024-03-051-13/+9
| | | | | | | | | Since we have now a common helper to read port properties use it instead of sparse home grown solution. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Link: https://lore.kernel.org/r/20240304123035.758700-13-andriy.shevchenko@linux.intel.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* serial: 8250_omap: Switch to use uart_read_port_properties()Andy Shevchenko2024-03-051-19/+10
| | | | | | | | | Since we have now a common helper to read port properties use it instead of sparse home grown solution. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Link: https://lore.kernel.org/r/20240304123035.758700-12-andriy.shevchenko@linux.intel.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* serial: 8250_of: Switch to use uart_read_port_properties()Andy Shevchenko2024-03-051-80/+19
| | | | | | | | | | | | Since we have now a common helper to read port properties use it instead of sparse home grown solution. Reviewed-by: Andi Shyti <andi.shyti@linux.intel.com> Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Reviewed-by: Florian Fainelli <florian.fainelli@broadcom.com> Tested-by: Florian Fainelli <florian.fainelli@broadcom.com> Link: https://lore.kernel.org/r/20240304123035.758700-11-andriy.shevchenko@linux.intel.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* serial: 8250_lpc18xx: Switch to use uart_read_port_properties()Andy Shevchenko2024-03-051-12/+8
| | | | | | | | | Since we have now a common helper to read port properties use it instead of sparse home grown solution. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Link: https://lore.kernel.org/r/20240304123035.758700-10-andriy.shevchenko@linux.intel.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* serial: 8250_ingenic: Switch to use uart_read_port_properties()Andy Shevchenko2024-03-051-13/+7
| | | | | | | | | Since we have now a common helper to read port properties use it instead of sparse home grown solution. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Link: https://lore.kernel.org/r/20240304123035.758700-9-andriy.shevchenko@linux.intel.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* serial: 8250_dw: Switch to use uart_read_port_properties()Andy Shevchenko2024-03-051-40/+27
| | | | | | | | | | Since we have now a common helper to read port properties use it instead of sparse home grown solution. Reviewed-by: Andi Shyti <andi.shyti@linux.intel.com> Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Link: https://lore.kernel.org/r/20240304123035.758700-8-andriy.shevchenko@linux.intel.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* serial: 8250_bcm7271: Switch to use uart_read_port_properties()Andy Shevchenko2024-03-051-37/+19
| | | | | | | | | | | Since we have now a common helper to read port properties use it instead of sparse home grown solution. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Reviewed-by: Florian Fainelli <florian.fainelli@broadcom.com> Tested-by: Florian Fainelli <florian.fainelli@broadcom.com> Link: https://lore.kernel.org/r/20240304123035.758700-7-andriy.shevchenko@linux.intel.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* serial: 8250_bcm2835aux: Switch to use uart_read_port_properties()Andy Shevchenko2024-03-051-51/+43
| | | | | | | | | | | Since we have now a common helper to read port properties use it instead of sparse home grown solution. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Reviewed-by: Florian Fainelli <florian.fainelli@broadcom.com> Tested-by: Florian Fainelli <florian.fainelli@broadcom.com> Link: https://lore.kernel.org/r/20240304123035.758700-6-andriy.shevchenko@linux.intel.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* serial: 8250_aspeed_vuart: Switch to use uart_read_port_properties()Andy Shevchenko2024-03-051-35/+15
| | | | | | | | | | | Since we have now a common helper to read port properties use it instead of sparse home grown solution. Reviewed-by: Andi Shyti <andi.shyti@linux.intel.com> Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Reviewed-by: Andrew Jeffery <andrew@codeconstruct.com.au> Link: https://lore.kernel.org/r/20240304123035.758700-5-andriy.shevchenko@linux.intel.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* serial: port: Introduce a common helper to read propertiesAndy Shevchenko2024-03-052-0/+147
| | | | | | | | | Several serial drivers want to read the same or similar set of the port properties. Make a common helper for them. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Link: https://lore.kernel.org/r/20240304123035.758700-4-andriy.shevchenko@linux.intel.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* serial: core: Add UPIO_UNKNOWN constant for unknown port typeAndy Shevchenko2024-03-051-0/+1
| | | | | | | | | | | | In some APIs we would like to assign the special value to iotype and compare against it in another places. Introduce UPIO_UNKNOWN for this purpose. Note, we can't use 0, because it's a valid value for IO port access. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Link: https://lore.kernel.org/r/20240304123035.758700-3-andriy.shevchenko@linux.intel.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* serial: core: Move struct uart_port::quirks closer to possible valuesAndy Shevchenko2024-03-051-2/+4
| | | | | | | | | | | Currently it's not crystal clear what UPIO_* and UPQ_* definitions belong to. Reindent the code, so it will be easy to read and understand. No functional changes intended. Reviewed-by: Andi Shyti <andi.shyti@linux.intel.com> Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Link: https://lore.kernel.org/r/20240304123035.758700-2-andriy.shevchenko@linux.intel.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* serial: sh-sci: Call sci_serial_{in,out}() directlyGeert Uytterhoeven2024-03-051-126/+119
| | | | | | | | | | | | | | | | | | | | Unlike the 8250 serial driver complex, the sh-sci driver uses only a single pair of functions to read and write serial port registers. Hence there is no need to incur the overhead of calling them through indirection, like the serial_port_{in,out}() wrappers do. Replace all calls to these wrappers by direct calls to sci_serial_{in,out}(). Remove the setup of the uart_port.serial_{in,out}() callbacks. After removal of all calls to serial_port_{in,out}() in the sh-sci driver, the only remaining user is uart_xchar_out(), which the sh-sci driver does not use. Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Acked-by: John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de> Link: https://lore.kernel.org/r/51e79d601cb9d9d63822d3773d3cf05a96868612.1709548811.git.geert+renesas@glider.be Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* serial: core: only stop transmit when HW fifo is emptyJonas Gorski2024-03-051-1/+2
| | | | | | | | | | | | | | | | | | If the circular buffer is empty, it just means we fit all characters to send into the HW fifo, but not that the hardware finished transmitting them. So if we immediately call stop_tx() after that, this may abort any pending characters in the HW fifo, and cause dropped characters on the console. Fix this by only stopping tx when the tx HW fifo is actually empty. Fixes: 8275b48b2780 ("tty: serial: introduce transmit helpers") Cc: stable@vger.kernel.org Signed-off-by: Jonas Gorski <jonas.gorski@gmail.com> Link: https://lore.kernel.org/r/20240303150807.68117-1-jonas.gorski@gmail.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* serial: pch: Use uart_prepare_sysrq_char().Sebastian Andrzej Siewior2024-03-021-15/+9
| | | | | | | | | | | | | | The port lock is a spinlock_t which is becomes a sleeping lock on PREEMPT_RT. The driver splits the locking function into two parts: local_irq_save() and uart_port_lock() and this breaks PREEMPT_RT. Delay handling sysrq until port lock is dropped. Remove the special case in the console write routine an always use the complete locking function. Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Link: https://lore.kernel.org/r/20240301215246.891055-19-bigeasy@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* serial: pch: Remove eg20t_port::lock.Sebastian Andrzej Siewior2024-03-021-20/+6
| | | | | | | | | | | | | | | | | | | The struct eg20t_port has a spinlock_t which is used for locking while access I/O of the device. Then there is the uart_portlock which is sometimes and nests within eg20t_port's lock. The uart_port lock is not used while using the struct in pch_uart_hal_read() which might be okay. Then both locks are used in pch_console_write() which looks odd especially the double try_lock part. All in all it looks like the uart_port's lock could replace eg20t_port's lock and simplify the code. Remove eg20t_port::lock and use uart_port's lock for the lock scope. Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Link: https://lore.kernel.org/r/20240301215246.891055-18-bigeasy@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* serial: pch: Don't initialize uart_port's spin_lock.Sebastian Andrzej Siewior2024-03-021-2/+0
| | | | | | | | | | | | There is no need to directly initialize the spinlock_t in struct uart_port. The structure is later passed to uart_add_one_port() which initialize the complete struct including the lock member. Remove spin_lock_init() on uart_port's internal lock. Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Link: https://lore.kernel.org/r/20240301215246.891055-17-bigeasy@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* serial: pch: Don't disable interrupts while acquiring lock in ISR.Sebastian Andrzej Siewior2024-03-021-3/+2
| | | | | | | | | | | | The interrupt service routine is always invoked with disabled interrupts. Remove the _irqsave() from the locking functions in the interrupts service routine/ pch_uart_interrupt(). Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Link: https://lore.kernel.org/r/20240301215246.891055-16-bigeasy@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* serial: pch: Make push_rx() return void.Sebastian Andrzej Siewior2024-03-021-8/+4
| | | | | | | | | | push_rx() returns always 0. Make push_rx() return void. Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Link: https://lore.kernel.org/r/20240301215246.891055-15-bigeasy@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* serial: pch: Invoke handle_rx_to() directly.Sebastian Andrzej Siewior2024-03-021-6/+1
| | | | | | | | | | | handle_rx() is only a wrapper around handle_rx_to() without any additional functionality. Invoke handle_rx_to() directly and remove handle_rx(). Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Link: https://lore.kernel.org/r/20240301215246.891055-14-bigeasy@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* serial: sifive: Use uart_prepare_sysrq_char() to handle sysrq.Sebastian Andrzej Siewior2024-03-021-10/+7
| | | | | | | | | | | | | | | | | The port lock is a spinlock_t which is becomes a sleeping lock on PREEMPT_RT. The driver splits the locking function into two parts: local_irq_save() and uart_port_lock() and this breaks PREEMPT_RT. Handle sysrq requests sysrq once the port lock is dropped. Remove the special case in the console write routine an always use the complete locking function. Cc: Palmer Dabbelt <palmer@dabbelt.com> Cc: Paul Walmsley <paul.walmsley@sifive.com> Cc: linux-riscv@lists.infradead.org Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Link: https://lore.kernel.org/r/20240301215246.891055-13-bigeasy@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* serial: rda: Use uart_prepare_sysrq_char() to handle sysrq.Sebastian Andrzej Siewior2024-03-021-18/+10
| | | | | | | | | | | | | | | | | The port lock is a spinlock_t which is becomes a sleeping lock on PREEMPT_RT. The driver splits the locking function into two parts: local_irq_save() and uart_port_lock() and this breaks PREEMPT_RT. Handle sysrq requests sysrq once the port lock is dropped. Remove the special case in the console write routine an always use the complete locking function. Cc: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org> Cc: linux-arm-kernel@lists.infradead.org Cc: linux-unisoc@lists.infradead.org Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Link: https://lore.kernel.org/r/20240301215246.891055-12-bigeasy@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* serial: owl: Use uart_prepare_sysrq_char() to handle sysrq.Sebastian Andrzej Siewior2024-03-021-18/+12
| | | | | | | | | | | | | | | | | | The port lock is a spinlock_t which is becomes a sleeping lock on PREEMPT_RT. The driver splits the locking function into two parts: local_irq_save() and uart_port_lock() and this breaks PREEMPT_RT. Handle sysrq requests sysrq once the port lock is dropped. Remove the special case in the console write routine an always use the complete locking function. Cc: Andreas Färber <afaerber@suse.de> Cc: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org> Cc: linux-arm-kernel@lists.infradead.org Cc: linux-actions@lists.infradead.org Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Link: https://lore.kernel.org/r/20240301215246.891055-11-bigeasy@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* serial: lpc32xx_hs: Use uart_prepare_sysrq_char() to handle sysrq.Sebastian Andrzej Siewior2024-03-021-10/+7
| | | | | | | | | | | | | | | | The port lock is a spinlock_t which is becomes a sleeping lock on PREEMPT_RT. The driver splits the locking function into two parts: local_irq_save() and uart_port_lock() and this breaks PREEMPT_RT. Handle sysrq requests sysrq once the port lock is dropped. Remove the special case in the console write routine an always use the complete locking function. Cc: Vladimir Zapolskiy <vz@mleia.com> Cc: linux-arm-kernel@lists.infradead.org Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Link: https://lore.kernel.org/r/20240301215246.891055-10-bigeasy@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* serial: sunplus: Use uart_prepare_sysrq_char().Sebastian Andrzej Siewior2024-03-021-12/+6
| | | | | | | | | | | | | | | The port lock is a spinlock_t which is becomes a sleeping lock on PREEMPT_RT. The driver splits the locking function into two parts: local_irq_save() and uart_port_lock() and this breaks PREEMPT_RT. Delay handling sysrq until port lock is dropped. Remove the special case in the console write routine an always use the complete locking function. Cc: Hammer Hsieh <hammerh0314@gmail.com> Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Link: https://lore.kernel.org/r/20240301215246.891055-9-bigeasy@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* serial: pxa: Use uart_prepare_sysrq_char().Sebastian Andrzej Siewior2024-03-021-11/+6
| | | | | | | | | | | | | | The port lock is a spinlock_t which is becomes a sleeping lock on PREEMPT_RT. The driver splits the locking function into two parts: local_irq_save() and uart_port_lock() and this breaks PREEMPT_RT. Delay handling sysrq until port lock is dropped. Remove the special case in the console write routine an always use the complete locking function. Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Link: https://lore.kernel.org/r/20240301215246.891055-8-bigeasy@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* serial: omap: Use uart_prepare_sysrq_char().Sebastian Andrzej Siewior2024-03-021-10/+6
| | | | | | | | | | | | | | The port lock is a spinlock_t which is becomes a sleeping lock on PREEMPT_RT. The driver splits the locking function into two parts: local_irq_save() and uart_port_lock() and this breaks PREEMPT_RT. Delay handling sysrq until port lock is dropped. Remove the special case in the console write routine an always use the complete locking function. Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Link: https://lore.kernel.org/r/20240301215246.891055-7-bigeasy@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* serial: msm: Use uart_prepare_sysrq_char().Sebastian Andrzej Siewior2024-03-021-23/+10
| | | | | | | | | | | | | | | | | The port lock is a spinlock_t which is becomes a sleeping lock on PREEMPT_RT. The driver splits the locking function into two parts: local_irq_save() and uart_port_lock() and this breaks PREEMPT_RT. Delay handling sysrq until port lock is dropped. Remove the special case in the console write routine an always use the complete locking function. Cc: Bjorn Andersson <andersson@kernel.org> Cc: Konrad Dybcio <konrad.dybcio@linaro.org> Cc: linux-arm-msm@vger.kernel.org Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Link: https://lore.kernel.org/r/20240301215246.891055-6-bigeasy@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* serial: meson: Use uart_prepare_sysrq_char().Sebastian Andrzej Siewior2024-03-021-14/+8
| | | | | | | | | | | | | | | | | | The port lock is a spinlock_t which is becomes a sleeping lock on PREEMPT_RT. The driver splits the locking function into two parts: local_irq_save() and uart_port_lock() and this breaks PREEMPT_RT. Delay handling sysrq until port lock is dropped. Remove the special case in the console write routine an always use the complete locking function. Cc: Kevin Hilman <khilman@baylibre.com> Cc: Jerome Brunet <jbrunet@baylibre.com> Cc: linux-arm-kernel@lists.infradead.org Cc: linux-amlogic@lists.infradead.org Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Link: https://lore.kernel.org/r/20240301215246.891055-5-bigeasy@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* serial: bcm63xx: Use uart_prepare_sysrq_char().Sebastian Andrzej Siewior2024-03-021-16/+8
| | | | | | | | | | | | | | The port lock is a spinlock_t which is becomes a sleeping lock on PREEMPT_RT. The driver splits the locking function into two parts: local_irq_save() and uart_port_lock() and this breaks PREEMPT_RT. Delay handling sysrq until port lock is dropped. Remove the special case in the console write routine an always use the complete locking function. Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Link: https://lore.kernel.org/r/20240301215246.891055-4-bigeasy@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* serial: ar933x: Use uart_prepare_sysrq_char().Sebastian Andrzej Siewior2024-03-021-12/+6
| | | | | | | | | | | | | | The port lock is a spinlock_t which is becomes a sleeping lock on PREEMPT_RT. The driver splits the locking function into two parts: local_irq_save() and uart_port_lock() and this breaks PREEMPT_RT. Delay handling sysrq until port lock is dropped. Remove the special case in the console write routine an always use the complete locking function. Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Link: https://lore.kernel.org/r/20240301215246.891055-3-bigeasy@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* serial: amba-pl011: Use uart_prepare_sysrq_char().Sebastian Andrzej Siewior2024-03-021-16/+8
| | | | | | | | | | | | | | | The port lock is a spinlock_t which is becomes a sleeping lock on PREEMPT_RT. The driver splits the locking function into two parts: local_irq_save() and uart_port_lock() and this breaks PREEMPT_RT. Delay handling sysrq until port lock is dropped. Remove the special case in the console write routine an always use the complete locking function. Cc: Russell King <linux@armlinux.org.uk> Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Link: https://lore.kernel.org/r/20240301215246.891055-2-bigeasy@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* serial: 8250_dw: Emit an error message if getting the baudclk failedUwe Kleine-König2024-03-021-1/+2
| | | | | | | | | | Instead of silently giving up, at least tell what the problem is. Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com> Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Link: https://lore.kernel.org/r/20240222111922.2016122-2-u.kleine-koenig@pengutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* dt-bindings: serial: convert st,asc to DT schemaRaphael Gallais-Pou2024-03-022-18/+55
| | | | | | | | | | | 'clocks' property is required regarding the device. Convert st,asc binding to DT schema format in order to add this property, and update example. Signed-off-by: Raphael Gallais-Pou <rgallaispou@gmail.com> Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org> Link: https://lore.kernel.org/r/20240226152135.8671-1-rgallaispou@gmail.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* serial: 8250: Use serial8250_do_set_termios for uartclk updatingSerge Semin2024-03-021-19/+1
| | | | | | | | | | | | | | | The serial8250_update_uartclk() body was created based on the several method calls copied from the serial8250_do_set_termios() function. Seeing aside with some other things the later method can update the baud rate based on the new reference clock let's just call it instead thus simplifying the code a bit. Suggested-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Link: https://lore.kernel.org/linux-serial/ZczD7KPbeRnY4CFc@black.fi.intel.com Signed-off-by: Serge Semin <fancer.lancer@gmail.com> Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com> Link: https://lore.kernel.org/r/20240222145058.28307-1-fancer.lancer@gmail.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* serial: st-asc: don't get/put GPIOs in atomic contextBartosz Golaszewski2024-03-021-16/+24
| | | | | | | | | | | | | | | | | | | | | Since commit 1f2bcb8c8ccd ("gpio: protect the descriptor label with SRCU") gpiod_set_consumer_name() calls synchronize_srcu() which led to a "sleeping in atomic context" smatch warning. This function (along with gpiod_get/put() and all other GPIO APIs apart from gpiod_get/set_value() and gpiod_direction_input/output()) should have never been called with a spinlock taken. We're only fixing this now as GPIOLIB has been rebuilt to use SRCU for access serialization which uncovered this problem. Move the calls to gpiod_get/put() outside the spinlock critical section. Reported-by: Dan Carpenter <dan.carpenter@linaro.org> Closes: https://lore.kernel.org/linux-gpio/deee1438-efc1-47c4-8d80-0ab2cf01d60a@moroto.mountain/ Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org> Reviewed-by: Patrice Chotard <patrice.chotard@foss.st.com> Link: https://lore.kernel.org/r/20240220113410.16613-1-brgl@bgdev.pl Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* serial: samsung: honor fifosize from dts at firstTamseel Shams2024-03-021-7/+10
| | | | | | | | | | | Currently for platforms which passes UART fifosize from DT gets override by local driver structure "s3c24xx_serial_drv_data", which is not intended. Change the code to honor fifosize from device tree at first. Signed-off-by: Tamseel Shams <m.shams@samsung.com> Link: https://lore.kernel.org/r/20240220101227.80741-1-m.shams@samsung.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* drivers/tty/serial: Remove unused function early_mcf_setupThomas Huth2024-03-021-27/+0
| | | | | | | | | | | | | | | | | | | Compiling a kernel for the ColdFire causes a compiler warning: drivers/tty/serial/mcf.c:473:12: warning: no previous prototype for ‘early_mcf_setup’ [-Wmissing-prototypes] 473 | int __init early_mcf_setup(struct mcf_platform_uart *platp) | ^~~~~~~~~~~~~~~ This function seems to be completely unused, so let's remove it to silence the warning. Signed-off-by: Thomas Huth <thuth@redhat.com> Reviewed-by: Jiri Slaby <jirislaby@kernel.org> Acked-by: Greg Ungerer <gerg@linux-m68k.org> Reviewed-by: Geert Uytterhoeven <geert@linux-m68k.org> Link: https://lore.kernel.org/r/20240219164002.520342-1-thuth@redhat.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* serial: 8250_pci1xxxx: Drop quirk from 8250_portAndy Shevchenko2024-03-022-14/+18
| | | | | | | | | | | | | | | | | | We are not supposed to spread quirks in 8250_port module especially when we have a separate driver for the hardware in question. Move quirk from generic module to the driver that uses it. While at it, move IO to ->set_divisor() callback as it has to be from day 1. ->get_divisor() is not supposed to perform any IO as UART port: - might not be powered on - is not locked by a spin lock Fixes: 1ed67ecd1349 ("8250: microchip: Add 4 Mbps support in PCI1XXXX UART") Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Acked-by: Rengarajan S <rengarajan.s@microchip.com> Link: https://lore.kernel.org/r/20240219162917.2159736-1-andriy.shevchenko@linux.intel.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* serial: 8250_exar: Don't use "proxy" headersAndy Shevchenko2024-03-021-5/+9
| | | | | | | | | Update header inclusions to follow IWYU (Include What You Use) principle. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Link: https://lore.kernel.org/r/20240219150627.2101198-8-andriy.shevchenko@linux.intel.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* serial: 8250_exar: Use 8250 PCI library to map and assign resourcesAndy Shevchenko2024-03-022-5/+7
| | | | | | | | | | 8250 PCI library provides a common code to map and assign resources. Use it in order to deduplicate existing code and support IO port variants. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Link: https://lore.kernel.org/r/20240219150627.2101198-7-andriy.shevchenko@linux.intel.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* serial: 8250_exar: switch to DEFINE_SIMPLE_DEV_PM_OPS()Andy Shevchenko2024-03-021-4/+5
| | | | | | | | | | SIMPLE_DEV_PM_OPS() is deprecated, replace it with DEFINE_SIMPLE_DEV_PM_OPS() and use pm_sleep_ptr() for setting the driver's PM routines. We can now remove the __maybe_unused qualifier in the suspend and resume functions. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Link: https://lore.kernel.org/r/20240219150627.2101198-6-andriy.shevchenko@linux.intel.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* serial: 8250_exar: Use generic function to set firmware nodeAndy Shevchenko2024-03-021-2/+2
| | | | | | | | Use generic function to set firmware node instead of ACPI specific one. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Link: https://lore.kernel.org/r/20240219150627.2101198-5-andriy.shevchenko@linux.intel.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* serial: 8250_exar: Clear interrupts before registering handlerAndy Shevchenko2024-03-021-3/+3
| | | | | | | | | | | | | While now there is no issue if IRQ is fired before we clearing the interrupts as the handler does the same, but strictly speaking it might be problematic if IRQ handler wants to do something more. Move clearing interrupt code to be called before registering the IRQ handler. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Link: https://lore.kernel.org/r/20240219150627.2101198-4-andriy.shevchenko@linux.intel.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* serial: 8250_exar: Use dev_get_drvdata() directly in PM callbacksAndy Shevchenko2024-03-021-2/+1
| | | | | | | | | | PM callbacks take struct device pointer as a parameter, use dev_get_drvdata() to retrieve it instead of unneeded double loop of referencing via pci_get_drvdata(to_pci_dev(dev)). Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Link: https://lore.kernel.org/r/20240219150627.2101198-3-andriy.shevchenko@linux.intel.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* serial: 8250_exar: Don't remove GPIO device on suspendAndy Shevchenko2024-03-021-4/+1
| | | | | | | | | | | | It seems a copy&paste mistake that suspend callback removes the GPIO device. There is no counterpart of this action, means once suspended there is no more GPIO device available untile full unbind-bind cycle is performed. Remove suspicious GPIO device removal in suspend. Fixes: d0aeaa83f0b0 ("serial: exar: split out the exar code from 8250_pci") Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Link: https://lore.kernel.org/r/20240219150627.2101198-2-andriy.shevchenko@linux.intel.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* Merge tag 'w1-drv-6.9' of ↵Greg Kroah-Hartman2024-03-0212-18/+550
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | https://git.kernel.org/pub/scm/linux/kernel/git/krzk/linux-w1 into tty-next Krzysztof writes: 1-Wire bus drivers for v6.9 1. Few cleanups: constifying, convert platform remove callback returning void. 2. Add UART 1-Wire bus driver which uses UART interface to create the 1-Wire timing patterns. * tag 'w1-drv-6.9' of https://git.kernel.org/pub/scm/linux/kernel/git/krzk/linux-w1: w1: w1-gpio: Convert to platform remove callback returning void w1: sgi_w1: Convert to platform remove callback returning void w1: omap_hdq: Convert to platform remove callback returning void w1: mxc_w1: Convert to platform remove callback returning void w1: add UART w1 bus driver dt-bindings: w1: UART 1-Wire bus dt-bindings: serial: allow onewire as child node w1: make w1_bus_type const
| * w1: w1-gpio: Convert to platform remove callback returning voidUwe Kleine-König2024-02-201-4/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The .remove() callback for a platform driver returns an int which makes many driver authors wrongly assume it's possible to do error handling by returning an error code. However the value returned is ignored (apart from emitting a warning) and this typically results in resource leaks. To improve here there is a quest to make the remove callback return void. In the first step of this quest all drivers are converted to .remove_new(), which already returns void. Eventually after all drivers are converted, .remove_new() will be renamed to .remove(). Trivially convert this driver from always returning zero in the remove callback to the void returning variant. Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Link: https://lore.kernel.org/r/bd69ccde7395cf4bf63765e29c1ce83834d3669b.1708340114.git.u.kleine-koenig@pengutronix.de Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
generated by cgit v1.2.3 (git 2.39.1) at 2025-02-02 22:33:07 +0100