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| * | | serial: sunplus-uart: Use uart_xmit_advance()Ilpo Järvinen2022-11-031-3/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Take advantage of the new uart_xmit_advance() helper. Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com> Link: https://lore.kernel.org/r/20221019091151.6692-37-ilpo.jarvinen@linux.intel.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| * | | serial: sunhv: Use uart_xmit_advance()Ilpo Järvinen2022-11-031-4/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Take advantage of the new uart_xmit_advance() helper. Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com> Link: https://lore.kernel.org/r/20221019091151.6692-36-ilpo.jarvinen@linux.intel.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| * | | serial: stm32: Use uart_xmit_advance()Ilpo Järvinen2022-11-031-4/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Take advantage of the new uart_xmit_advance() helper. Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com> Link: https://lore.kernel.org/r/20221019091151.6692-35-ilpo.jarvinen@linux.intel.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| * | | serial: sprd: Use uart_xmit_advance()Ilpo Järvinen2022-11-031-5/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Take advantage of the new uart_xmit_advance() helper. Reviewed-by: Baolin Wang <baolin.wang@linux.alibaba.com> Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com> Link: https://lore.kernel.org/r/20221019091151.6692-34-ilpo.jarvinen@linux.intel.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| * | | serial: sh-sci: Use uart_xmit_advance()Ilpo Järvinen2022-11-031-4/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Take advantage of the new uart_xmit_advance() helper. Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com> Link: https://lore.kernel.org/r/20221019091151.6692-33-ilpo.jarvinen@linux.intel.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| * | | serial: tegra: Use uart_xmit_advance()Ilpo Järvinen2022-11-031-2/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Take advantage of the new uart_xmit_advance() helper. Reviewed-by: Thierry Reding <treding@nvidia.com> Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com> Link: https://lore.kernel.org/r/20221019091151.6692-32-ilpo.jarvinen@linux.intel.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| * | | serial: sccnxp: Use uart_xmit_advance()Ilpo Järvinen2022-11-031-2/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Take advantage of the new uart_xmit_advance() helper. Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com> Link: https://lore.kernel.org/r/20221019091151.6692-31-ilpo.jarvinen@linux.intel.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| * | | serial: sb1250-duart: Use uart_xmit_advance()Ilpo Järvinen2022-11-031-2/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Take advantage of the new uart_xmit_advance() helper. Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com> Link: https://lore.kernel.org/r/20221019091151.6692-30-ilpo.jarvinen@linux.intel.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| * | | serial: samsung_tty: Use uart_xmit_advance()Ilpo Järvinen2022-11-031-7/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Take advantage of the new uart_xmit_advance() helper. Reviewed-by: Sam Protsenko <semen.protsenko@linaro.org> Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com> Link: https://lore.kernel.org/r/20221019091151.6692-29-ilpo.jarvinen@linux.intel.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| * | | serial: rda: Use uart_xmit_advance()Ilpo Järvinen2022-11-031-2/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Take advantage of the new uart_xmit_advance() helper. Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com> Link: https://lore.kernel.org/r/20221019091151.6692-28-ilpo.jarvinen@linux.intel.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| * | | serial: pmac_zilog: Use uart_xmit_advance()Ilpo Järvinen2022-11-031-4/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Take advantage of the new uart_xmit_advance() helper. Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com> Link: https://lore.kernel.org/r/20221019091151.6692-27-ilpo.jarvinen@linux.intel.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| * | | serial: pic32: Use uart_xmit_advance()Ilpo Järvinen2022-11-031-2/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Take advantage of the new uart_xmit_advance() helper. Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com> Link: https://lore.kernel.org/r/20221019091151.6692-26-ilpo.jarvinen@linux.intel.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| * | | serial: mvebu-uart: Use uart_xmit_advance()Ilpo Järvinen2022-11-031-2/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Take advantage of the new uart_xmit_advance() helper. Reviewed-by: Pali Rohár <pali@kernel.org> Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com> Link: https://lore.kernel.org/r/20221019091151.6692-25-ilpo.jarvinen@linux.intel.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| * | | serial: milbeaut_usio: Use uart_xmit_advance()Ilpo Järvinen2022-11-031-2/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Take advantage of the new uart_xmit_advance() helper. Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com> Link: https://lore.kernel.org/r/20221019091151.6692-24-ilpo.jarvinen@linux.intel.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| * | | serial: meson: Use uart_xmit_advance()Ilpo Järvinen2022-11-031-2/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Take advantage of the new uart_xmit_advance() helper. Acked-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com> Acked-by: Neil Armstrong <neil.armstrong@linaro.org> Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com> Link: https://lore.kernel.org/r/20221019091151.6692-23-ilpo.jarvinen@linux.intel.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| * | | serial: max310x: Use uart_xmit_advance()Ilpo Järvinen2022-11-031-4/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Take advantage of the new uart_xmit_advance() helper. Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com> Link: https://lore.kernel.org/r/20221019091151.6692-22-ilpo.jarvinen@linux.intel.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| * | | serial: max3100: Use uart_xmit_advance()Ilpo Järvinen2022-11-031-3/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Take advantage of the new uart_xmit_advance() helper. Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com> Link: https://lore.kernel.org/r/20221019091151.6692-21-ilpo.jarvinen@linux.intel.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| * | | serial: liteuart: Use uart_xmit_advance()Ilpo Järvinen2022-11-031-2/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Take advantage of the new uart_xmit_advance() helper. Acked-by: Gabriel Somlo <gsomlo@gmail.com> Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com> Link: https://lore.kernel.org/r/20221019091151.6692-20-ilpo.jarvinen@linux.intel.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| * | | serial: ip22zilog: Use uart_xmit_advance()Ilpo Järvinen2022-11-031-4/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Take advantage of the new uart_xmit_advance() helper. Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com> Link: https://lore.kernel.org/r/20221019091151.6692-19-ilpo.jarvinen@linux.intel.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| * | | serial: imx: Use uart_xmit_advance()Ilpo Järvinen2022-11-031-5/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Take advantage of the new uart_xmit_advance() helper. Reviewed-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com> Link: https://lore.kernel.org/r/20221019091151.6692-18-ilpo.jarvinen@linux.intel.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| * | | serial: fsl_lpuart: Use uart_xmit_advance()Ilpo Järvinen2022-11-031-5/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Take advantage of the new uart_xmit_advance() helper. Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com> Link: https://lore.kernel.org/r/20221019091151.6692-17-ilpo.jarvinen@linux.intel.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| * | | serial: linflexuart: Use uart_xmit_advance()Ilpo Järvinen2022-11-031-2/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Take advantage of the new uart_xmit_advance() helper. Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com> Link: https://lore.kernel.org/r/20221019091151.6692-16-ilpo.jarvinen@linux.intel.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| * | | serial: digicolor: Use uart_xmit_advance()Ilpo Järvinen2022-11-031-2/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Take advantage of the new uart_xmit_advance() helper. Acked-by: Baruch Siach <baruch@tkos.co.il> Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com> Link: https://lore.kernel.org/r/20221019091151.6692-15-ilpo.jarvinen@linux.intel.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| * | | serial: cpm_uart: Use uart_xmit_advance()Ilpo Järvinen2022-11-031-2/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Take advantage of the new uart_xmit_advance() helper. Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com> Link: https://lore.kernel.org/r/20221019091151.6692-14-ilpo.jarvinen@linux.intel.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| * | | serial: clps711x: Use uart_xmit_advance()Ilpo Järvinen2022-11-031-2/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Take advantage of the new uart_xmit_advance() helper. Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com> Link: https://lore.kernel.org/r/20221019091151.6692-13-ilpo.jarvinen@linux.intel.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| * | | serial: atmel: Use uart_xmit_advance()Ilpo Järvinen2022-11-031-9/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Take advantage of the new uart_xmit_advance() helper. Reviewed-by: Claudiu Beznea <claudiu.beznea@microchip.com> Acked-By: Richard GENOUD <richard.genoud@gmail.com> Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com> Link: https://lore.kernel.org/r/20221019091151.6692-12-ilpo.jarvinen@linux.intel.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| * | | serial: arc: Use uart_xmit_advance()Ilpo Järvinen2022-11-031-2/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Take advantage of the new uart_xmit_advance() helper. Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com> Link: https://lore.kernel.org/r/20221019091151.6692-11-ilpo.jarvinen@linux.intel.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| * | | serial: ar933x: Use uart_xmit_advance()Ilpo Järvinen2022-11-031-2/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Take advantage of the new uart_xmit_advance() helper. Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com> Link: https://lore.kernel.org/r/20221019091151.6692-10-ilpo.jarvinen@linux.intel.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| * | | serial: pl011: Use uart_xmit_advance()Ilpo Järvinen2022-11-031-2/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Take advantage of the new uart_xmit_advance() helper. Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com> Link: https://lore.kernel.org/r/20221019091151.6692-9-ilpo.jarvinen@linux.intel.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| * | | serial: 8250: Use uart_xmit_advance()Ilpo Järvinen2022-11-031-2/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Take advantage of the new uart_xmit_advance() helper. Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com> Link: https://lore.kernel.org/r/20221019091151.6692-8-ilpo.jarvinen@linux.intel.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| * | | serial: 8250_bcm7271: Use uart_xmit_advance()Ilpo Järvinen2022-11-031-3/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Take advantage of the new uart_xmit_advance() helper. Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com> Link: https://lore.kernel.org/r/20221019091151.6692-7-ilpo.jarvinen@linux.intel.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| * | | serial: sc16is7xx: Use uart_xmit_advance()Ilpo Järvinen2022-11-031-4/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Take advantage of the new uart_xmit_advance() helper. Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com> Link: https://lore.kernel.org/r/20221019091151.6692-6-ilpo.jarvinen@linux.intel.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| * | | serial: pch_uart: Use uart_xmit_advance()Ilpo Järvinen2022-11-031-8/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Take advantage of the new uart_xmit_advance() helper. Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com> Link: https://lore.kernel.org/r/20221019091151.6692-5-ilpo.jarvinen@linux.intel.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| * | | serial: msm: Use uart_xmit_advance()Ilpo Järvinen2022-11-031-8/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Take advantage of the new uart_xmit_advance() helper. Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com> Link: https://lore.kernel.org/r/20221019091151.6692-4-ilpo.jarvinen@linux.intel.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| * | | serial: men_z135_uart: Use uart_xmit_advance()Ilpo Järvinen2022-11-031-4/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Take advantage of the new uart_xmit_advance() helper. Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com> Link: https://lore.kernel.org/r/20221019091151.6692-3-ilpo.jarvinen@linux.intel.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| * | | serial: dz: Use uart_xmit_advance()Ilpo Järvinen2022-11-031-2/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Take advantage of the new uart_xmit_advance() helper. Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com> Link: https://lore.kernel.org/r/20221019091151.6692-2-ilpo.jarvinen@linux.intel.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| * | | serial: 8250: 8250_omap: Support native RS485Lukas Wunner2022-11-031-3/+82
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Recent TI Sitara SoCs such as AM64/AM65 have gained the ability to automatically assert RTS when data is transmitted, obviating the need to emulate this functionality in software. The feature is controlled through new DIR_EN and DIR_POL bits in the Mode Definition Register 3. For details see page 8783 and 8890 of the AM65 TRM: https://www.ti.com/lit/ug/spruid7e/spruid7e.pdf Cc: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com> Cc: Su Bao Cheng <baocheng.su@siemens.com> Cc: Vignesh Raghavendra <vigneshr@ti.com> Cc: Jan Kiszka <jan.kiszka@siemens.com> Cc: Bin Liu <b-liu@ti.com> Tested-by: Zeng Chao <chao.zeng@siemens.com> Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com> Signed-off-by: Lukas Wunner <lukas@wunner.de> Link: https://lore.kernel.org/r/e9f25f5c9200a35d3162973c2b45d6b892cc9bf2.1665906869.git.lukas@wunner.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| * | | tty: serial: qcom-geni-serial: Add support for Hibernation featureAniket Randive2022-11-031-0/+35
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Added changes to support the hibernation feature for serial UART. Added support for freeze, restore and thaw callbacks to put the device into hibernation. Signed-off-by: Aniket Randive <quic_arandive@quicinc.com> Link: https://lore.kernel.org/r/1665123780-20557-1-git-send-email-quic_arandive@quicinc.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| * | | tty: serial: use uart_port_tx_limited()Jiri Slaby (SUSE)2022-11-0314-419/+85
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | uart_port_tx_limited() is a new helper to send characters to the device. Use it in these drivers. mux.c also needs to define tx_done(). But I'm not sure if the driver really wants to wait for all the characters to dismiss from the HW fifo at this code point. Hence I marked this as FIXME. Cc: Russell King <linux@armlinux.org.uk> Cc: Florian Fainelli <f.fainelli@gmail.com> Cc: bcm-kernel-feedback-list@broadcom.com Cc: "Pali Rohár" <pali@kernel.org> Cc: Kevin Cernekee <cernekee@gmail.com> Cc: Palmer Dabbelt <palmer@dabbelt.com> Cc: Paul Walmsley <paul.walmsley@sifive.com> Cc: Orson Zhai <orsonzhai@gmail.com> Cc: Baolin Wang <baolin.wang7@gmail.com> Cc: Chunyan Zhang <zhang.lyra@gmail.com> Cc: Patrice Chotard <patrice.chotard@foss.st.com> Cc: linux-riscv@lists.infradead.org Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com> Signed-off-by: Jiri Slaby (SUSE) <jirislaby@kernel.org> Link: https://lore.kernel.org/r/20221004104927.14361-4-jirislaby@kernel.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| * | | tty: serial: use uart_port_tx() helperJiri Slaby (SUSE)2022-11-0312-323/+60
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | uart_port_tx() is a new helper to send characters to the device. Use it in these drivers. Cc: Tobias Klauser <tklauser@distanz.ch> Cc: Richard Genoud <richard.genoud@gmail.com> Cc: Nicolas Ferre <nicolas.ferre@microchip.com> Cc: Alexandre Belloni <alexandre.belloni@bootlin.com> Cc: Claudiu Beznea <claudiu.beznea@microchip.com> Cc: Vladimir Zapolskiy <vz@mleia.com> Cc: Liviu Dudau <liviu.dudau@arm.com> Cc: Sudeep Holla <sudeep.holla@arm.com> Cc: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> Cc: Shawn Guo <shawnguo@kernel.org> Cc: Sascha Hauer <s.hauer@pengutronix.de> Cc: Pengutronix Kernel Team <kernel@pengutronix.de> Cc: Fabio Estevam <festevam@gmail.com> Cc: NXP Linux Team <linux-imx@nxp.com> Cc: "Andreas Färber" <afaerber@suse.de> Cc: Manivannan Sadhasivam <mani@kernel.org> Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com> Signed-off-by: Jiri Slaby (SUSE) <jirislaby@kernel.org> Link: https://lore.kernel.org/r/20221004104927.14361-3-jirislaby@kernel.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| * | | serial: sifive: select by default if SOC_CANAANConor Dooley2022-11-021-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | With the aim of dropping direct selects of drivers from Kconfig.socs, default the SiFive serial drivers to enabled if SOC_CANAAN. Signed-off-by: Conor Dooley <conor.dooley@microchip.com> Link: https://lore.kernel.org/r/20221005171348.167476-4-conor@kernel.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| * | | serial: sifive: select by default if SOC_SIFIVEConor Dooley2022-11-021-0/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | With the aim of dropping direct selects of drivers from Kconfig.socs, default the SiFive serial drivers to the value of SOC_SIFIVE. Signed-off-by: Conor Dooley <conor.dooley@microchip.com> Link: https://lore.kernel.org/r/20221005171348.167476-3-conor@kernel.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* | | | Merge tag 'printk-for-6.2' of ↵Linus Torvalds2022-12-128-23/+71
|\ \ \ \ | |_|/ / |/| | / | | |/ | |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/printk/linux Pull printk updates from Petr Mladek: - Add NMI-safe SRCU reader API. It uses atomic_inc() instead of this_cpu_inc() on strong load-store architectures. - Introduce new console_list_lock to synchronize a manipulation of the list of registered consoles and their flags. This is a first step in removing the big-kernel-lock-like behavior of console_lock(). This semaphore still serializes console->write() calbacks against: - each other. It primary prevents potential races between early and proper console drivers using the same device. - suspend()/resume() callbacks and init() operations in some drivers. - various other operations in the tty/vt and framebufer susbsystems. It is likely that console_lock() serializes even operations that are not directly conflicting with the console->write() callbacks here. This is the most complicated big-kernel-lock aspect of the console_lock() that will be hard to untangle. - Introduce new console_srcu lock that is used to safely iterate and access the registered console drivers under SRCU read lock. This is a prerequisite for introducing atomic console drivers and console kthreads. It will reduce the complexity of serialization against normal consoles and console_lock(). Also it should remove the risk of deadlock during critical situations, like Oops or panic, when only atomic consoles are registered. - Check whether the console is registered instead of enabled on many locations. It was a historical leftover. - Cleanly force a preferred console in xenfb code instead of a dirty hack. - A lot of code and comment clean ups and improvements. * tag 'printk-for-6.2' of git://git.kernel.org/pub/scm/linux/kernel/git/printk/linux: (47 commits) printk: htmldocs: add missing description tty: serial: sh-sci: use setup() callback for early console printk: relieve console_lock of list synchronization duties tty: serial: kgdboc: use console_list_lock to trap exit tty: serial: kgdboc: synchronize tty_find_polling_driver() and register_console() tty: serial: kgdboc: use console_list_lock for list traversal tty: serial: kgdboc: use srcu console list iterator proc: consoles: use console_list_lock for list iteration tty: tty_io: use console_list_lock for list synchronization printk, xen: fbfront: create/use safe function for forcing preferred netconsole: avoid CON_ENABLED misuse to track registration usb: early: xhci-dbc: use console_is_registered() tty: serial: xilinx_uartps: use console_is_registered() tty: serial: samsung_tty: use console_is_registered() tty: serial: pic32_uart: use console_is_registered() tty: serial: earlycon: use console_is_registered() tty: hvc: use console_is_registered() efi: earlycon: use console_is_registered() tty: nfcon: use console_is_registered() serial_core: replace uart_console_enabled() with uart_console_registered() ...
| * | tty: serial: sh-sci: use setup() callback for early consoleJohn Ogness2022-12-021-4/+16
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When setting up the early console, the setup() callback of the regular console is used. It is called manually before registering the early console instead of providing a setup() callback for the early console. This is probably because the early setup needs a different @options during the early stage. The issue here is that the setup() callback is called without the console_list_lock held and functions such as uart_set_options() expect that. Rather than manually calling the setup() function before registering, provide an early console setup() callback that will use the different early options. This ensures that the error checking, ordering, and locking context when setting up the early console are correct. Since this early console can only be registered via the earlyprintk= parameter, the @options argument of the setup() callback will always be NULL. Rather than simply ignoring the argument, add a WARN_ON() to get our attention in case the setup() callback semantics should change in the future. Note that technically the current implementation works because it is only used in early boot. And since the early console setup is performed before registering, it cannot race with anything and thus does not need any locking. However, longterm maintenance is easier when drivers rely on the subsystem API rather than manually implementing steps that could cause breakage in the future. Signed-off-by: John Ogness <john.ogness@linutronix.de> Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be> Reviewed-by: Petr Mladek <pmladek@suse.com> Signed-off-by: Petr Mladek <pmladek@suse.com> Link: https://lore.kernel.org/r/20221116162152.193147-41-john.ogness@linutronix.de
| * | tty: serial: kgdboc: use console_list_lock to trap exitJohn Ogness2022-12-021-3/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | kgdboc_earlycon_init() uses the console_lock to ensure that no consoles are unregistered until the kgdboc_earlycon is setup. The console_list_lock should be used instead because list synchronization responsibility will be removed from the console_lock in a later change. Signed-off-by: John Ogness <john.ogness@linutronix.de> Reviewed-by: Daniel Thompson <daniel.thompson@linaro.org> Reviewed-by: Petr Mladek <pmladek@suse.com> Signed-off-by: Petr Mladek <pmladek@suse.com> Link: https://lore.kernel.org/r/20221116162152.193147-39-john.ogness@linutronix.de
| * | tty: serial: kgdboc: synchronize tty_find_polling_driver() and ↵John Ogness2022-12-021-4/+12
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | register_console() Calling tty_find_polling_driver() can lead to uart_set_options() being called (via the poll_init() callback of tty_operations) to configure the uart. But uart_set_options() can also be called by register_console() (via the setup() callback of console). Take the console_list_lock to synchronize against register_console() and also use it for console list traversal. This also ensures the console list cannot change until the polling console has been chosen. Signed-off-by: John Ogness <john.ogness@linutronix.de> Reviewed-by: Daniel Thompson <daniel.thompson@linaro.org> Reviewed-by: Petr Mladek <pmladek@suse.com> Reviewed-by: Douglas Anderson <dianders@chromium.org> Signed-off-by: Petr Mladek <pmladek@suse.com> Link: https://lore.kernel.org/r/20221116162152.193147-38-john.ogness@linutronix.de
| * | tty: serial: kgdboc: use console_list_lock for list traversalJohn Ogness2022-12-021-0/+12
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | configure_kgdboc() uses the console_lock for console list iteration. Use the console_list_lock instead because list synchronization responsibility will be removed from the console_lock in a later change. The SRCU iterator could have been used here, but a later change will relocate the locking of the console_list_lock to also provide synchronization against register_console(). Note, the console_lock is still needed to serialize the device() callback with other console operations. Signed-off-by: John Ogness <john.ogness@linutronix.de> Reviewed-by: Petr Mladek <pmladek@suse.com> Reviewed-by: Douglas Anderson <dianders@chromium.org> Signed-off-by: Petr Mladek <pmladek@suse.com> Link: https://lore.kernel.org/r/20221116162152.193147-37-john.ogness@linutronix.de
| * | tty: serial: kgdboc: use srcu console list iteratorJohn Ogness2022-12-021-2/+8
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Use srcu console list iteration for safe console list traversal. Note that this is a preparatory change for when console_lock no longer provides synchronization for the console list. Signed-off-by: John Ogness <john.ogness@linutronix.de> Reviewed-by: Petr Mladek <pmladek@suse.com> Reviewed-by: Douglas Anderson <dianders@chromium.org> Signed-off-by: Petr Mladek <pmladek@suse.com> Link: https://lore.kernel.org/r/20221116162152.193147-36-john.ogness@linutronix.de
| * | tty: serial: xilinx_uartps: use console_is_registered()John Ogness2022-12-021-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | It is not reliable to check for CON_ENABLED in order to identify if a console is registered. Use console_is_registered() instead. Signed-off-by: John Ogness <john.ogness@linutronix.de> Reviewed-by: Petr Mladek <pmladek@suse.com> Signed-off-by: Petr Mladek <pmladek@suse.com> Link: https://lore.kernel.org/r/20221116162152.193147-30-john.ogness@linutronix.de
| * | tty: serial: samsung_tty: use console_is_registered()John Ogness2022-12-021-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | It is not reliable to check for CON_ENABLED in order to identify if a console is registered. Use console_is_registered() instead. Signed-off-by: John Ogness <john.ogness@linutronix.de> Reviewed-by: Petr Mladek <pmladek@suse.com> Signed-off-by: Petr Mladek <pmladek@suse.com> Link: https://lore.kernel.org/r/20221116162152.193147-29-john.ogness@linutronix.de
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