1136981 Commits

Author SHA1 Message Date
Ilpo Järvinen
54ffabbe22 serial: sunplus-uart: Use uart_xmit_advance()
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>
2022-11-03 03:35:43 +01:00
Ilpo Järvinen
c5fd4b7d7e serial: sunhv: Use uart_xmit_advance()
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>
2022-11-03 03:35:42 +01:00
Ilpo Järvinen
29d8c07b49 serial: stm32: Use uart_xmit_advance()
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>
2022-11-03 03:35:42 +01:00
Ilpo Järvinen
b92df54ccf serial: sprd: Use uart_xmit_advance()
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>
2022-11-03 03:35:42 +01:00
Ilpo Järvinen
e234ef0ef1 serial: sh-sci: Use uart_xmit_advance()
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>
2022-11-03 03:35:42 +01:00
Ilpo Järvinen
b7e2647671 serial: tegra: Use uart_xmit_advance()
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>
2022-11-03 03:35:42 +01:00
Ilpo Järvinen
3ea03c021d serial: sccnxp: Use uart_xmit_advance()
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>
2022-11-03 03:35:42 +01:00
Ilpo Järvinen
10b459d2c3 serial: sb1250-duart: Use uart_xmit_advance()
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>
2022-11-03 03:35:42 +01:00
Ilpo Järvinen
ec04d75fe4 serial: samsung_tty: Use uart_xmit_advance()
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>
2022-11-03 03:35:42 +01:00
Ilpo Järvinen
3d4d838423 serial: rda: Use uart_xmit_advance()
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>
2022-11-03 03:35:42 +01:00
Ilpo Järvinen
b31b07a7d2 serial: pmac_zilog: Use uart_xmit_advance()
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>
2022-11-03 03:35:42 +01:00
Ilpo Järvinen
98fdebeebb serial: pic32: Use uart_xmit_advance()
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>
2022-11-03 03:35:42 +01:00
Ilpo Järvinen
269599fa88 serial: mvebu-uart: Use uart_xmit_advance()
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>
2022-11-03 03:35:42 +01:00
Ilpo Järvinen
5c664457a9 serial: milbeaut_usio: Use uart_xmit_advance()
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>
2022-11-03 03:35:42 +01:00
Ilpo Järvinen
681ef4219b serial: meson: Use uart_xmit_advance()
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>
2022-11-03 03:35:42 +01:00
Ilpo Järvinen
d41727dbdf serial: max310x: Use uart_xmit_advance()
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>
2022-11-03 03:35:42 +01:00
Ilpo Järvinen
502b13cc5a serial: max3100: Use uart_xmit_advance()
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>
2022-11-03 03:35:42 +01:00
Ilpo Järvinen
53c3d62f46 serial: liteuart: Use uart_xmit_advance()
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>
2022-11-03 03:35:42 +01:00
Ilpo Järvinen
daf63432f4 serial: ip22zilog: Use uart_xmit_advance()
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>
2022-11-03 03:35:41 +01:00
Ilpo Järvinen
26e8f1d9a8 serial: imx: Use uart_xmit_advance()
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>
2022-11-03 03:35:41 +01:00
Ilpo Järvinen
cacf7f689b serial: fsl_lpuart: Use uart_xmit_advance()
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>
2022-11-03 03:35:41 +01:00
Ilpo Järvinen
7840a92a3e serial: linflexuart: Use uart_xmit_advance()
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>
2022-11-03 03:35:41 +01:00
Ilpo Järvinen
cb867f542e serial: digicolor: Use uart_xmit_advance()
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>
2022-11-03 03:35:41 +01:00
Ilpo Järvinen
f8097f0caa serial: cpm_uart: Use uart_xmit_advance()
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>
2022-11-03 03:35:41 +01:00
Ilpo Järvinen
4146765cae serial: clps711x: Use uart_xmit_advance()
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>
2022-11-03 03:35:41 +01:00
Ilpo Järvinen
add147a459 serial: atmel: Use uart_xmit_advance()
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>
2022-11-03 03:35:41 +01:00
Ilpo Järvinen
8a8dee2cdb serial: arc: Use uart_xmit_advance()
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>
2022-11-03 03:35:41 +01:00
Ilpo Järvinen
d29d947c14 serial: ar933x: Use uart_xmit_advance()
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>
2022-11-03 03:35:41 +01:00
Ilpo Järvinen
71a67573d0 serial: pl011: Use uart_xmit_advance()
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>
2022-11-03 03:35:41 +01:00
Ilpo Järvinen
051ef7c8d8 serial: 8250: Use uart_xmit_advance()
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>
2022-11-03 03:35:41 +01:00
Ilpo Järvinen
fc59f80b08 serial: 8250_bcm7271: Use uart_xmit_advance()
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>
2022-11-03 03:35:41 +01:00
Ilpo Järvinen
a2a74303b3 serial: sc16is7xx: Use uart_xmit_advance()
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>
2022-11-03 03:35:41 +01:00
Ilpo Järvinen
a5c9611ddc serial: pch_uart: Use uart_xmit_advance()
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>
2022-11-03 03:35:41 +01:00
Ilpo Järvinen
1fcff75f39 serial: msm: Use uart_xmit_advance()
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>
2022-11-03 03:35:41 +01:00
Ilpo Järvinen
20b01af852 serial: men_z135_uart: Use uart_xmit_advance()
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>
2022-11-03 03:35:41 +01:00
Ilpo Järvinen
f4000a06f4 serial: dz: Use uart_xmit_advance()
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>
2022-11-03 03:35:40 +01:00
Lukas Wunner
801954d121 serial: 8250: 8250_omap: Support native RS485
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>
2022-11-03 03:34:09 +01:00
Aniket Randive
35781d8356 tty: serial: qcom-geni-serial: Add support for Hibernation feature
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>
2022-11-03 03:33:48 +01:00
Jiri Slaby (SUSE)
d11cc8c3c4 tty: serial: use uart_port_tx_limited()
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>
2022-11-03 03:32:40 +01:00
Jiri Slaby (SUSE)
2d141e683e tty: serial: use uart_port_tx() helper
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>
2022-11-03 03:32:40 +01:00
Jiri Slaby (SUSE)
8275b48b27 tty: serial: introduce transmit helpers
Many serial drivers do the same thing:
* send x_char if set
* keep sending from the xmit circular buffer until either
  - the loop reaches the end of the xmit buffer
  - TX is stopped
  - HW fifo is full
* check for pending characters and:
  - wake up tty writers to fill for more data into xmit buffer
  - stop TX if there is nothing in the xmit buffer

The only differences are:
* how to write the character to the HW fifo
* the check of the end condition:
  - is the HW fifo full?
  - is limit of the written characters reached?

So unify the above into two helpers:
* uart_port_tx_limited() -- it performs the above taking the written
  characters limit into account, and
* uart_port_tx() -- the same as above, except it only checks the HW
  readiness, not the characters limit.

The HW specific operations (as stated as "differences" above) are passed
as arguments to the macros. They are:
* tx_ready -- returns true if HW can accept more data.
* put_char -- write a character to the device.
* tx_done -- when the write loop is done, perform arbitrary action
  before potential invocation of ops->stop_tx() happens.

Note that the above are macros. This means the code is generated in
place and the above 3 arguments are "inlined". I.e. no added penalty by
generating call instructions for every single character. Nor any
indirect calls. (As in some previous versions of this patchset.)

Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Signed-off-by: Jiri Slaby (SUSE) <jirislaby@kernel.org>
Link: https://lore.kernel.org/r/20221004104927.14361-2-jirislaby@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2022-11-03 03:32:40 +01:00
Kees Cook
83efeeeb3d tty: Allow TIOCSTI to be disabled
TIOCSTI continues its long history of being used in privilege escalation
attacks[1]. Prior attempts to provide a mechanism to disable this have
devolved into discussions around creating full-blown LSMs to provide
arbitrary ioctl filtering, which is hugely over-engineered -- only
TIOCSTI is being used this way. 3 years ago OpenBSD entirely removed
TIOCSTI[2], Android has had it filtered for longer[3], and the tools that
had historically used TIOCSTI either do not need it, are not commonly
built with it, or have had its use removed.

Provide a simple CONFIG and global sysctl to disable this for the system
builders who have wanted this functionality for literally decades now,
much like the ldisc_autoload CONFIG and sysctl.

[1] https://lore.kernel.org/linux-hardening/Y0m9l52AKmw6Yxi1@hostpad
[2] https://undeadly.org/cgi?action=article;sid=20170701132619
[3] https://lore.kernel.org/lkml/CAFJ0LnFGRuEEn1tCLhoki8ZyWrKfktbF+rwwN7WzyC_kBFoQVA@mail.gmail.com/

Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Jiri Slaby <jirislaby@kernel.org>
Cc: Simon Brand <simon.brand@postadigitale.de>
Signed-off-by: Kees Cook <keescook@chromium.org>
Link: https://lore.kernel.org/r/20221022182949.2684794-2-keescook@chromium.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2022-11-03 01:58:03 +01:00
Kees Cook
5fd8c2d3de tty: Move sysctl setup into "core" tty logic
In preparation for adding another sysctl to the tty subsystem, move the
tty setup code into the "core" tty code, which contains tty_init() itself.

Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Jiri Slaby <jirislaby@kernel.org>
Signed-off-by: Kees Cook <keescook@chromium.org>
Link: https://lore.kernel.org/r/20221022182949.2684794-1-keescook@chromium.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2022-11-03 01:58:03 +01:00
Christophe Leroy
72da688b45 tty: evh_bytechan: Replace NO_IRQ by 0
NO_IRQ is used to check the return of irq_of_parse_and_map().

On some architecture NO_IRQ is 0, on other architectures it is -1.

irq_of_parse_and_map() returns 0 on error, independent of NO_IRQ.

So use 0 instead of using NO_IRQ.

Reviewed-by: Jiri Slaby <jirislaby@kernel.org>
Acked-by: Laurentiu Tudor <laurentiu.tudor@nxp.com>
Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Link: https://lore.kernel.org/r/23f608ca57e7e19bc7060d3e563de383e0b2b337.1665033575.git.christophe.leroy@csgroup.eu
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2022-11-02 08:10:42 +01:00
Conor Dooley
f58a16043a serial: sifive: select by default if SOC_CANAAN
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>
2022-11-02 08:10:11 +01:00
Conor Dooley
d780a47c2d serial: sifive: select by default if SOC_SIFIVE
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>
2022-11-02 08:10:09 +01:00
Linus Torvalds
30a0b95b13 Linux 6.1-rc3 v6.1-rc3 2022-10-30 15:19:28 -07:00
Linus Torvalds
b72018ab82 fbdev fixes for kernel 6.1-rc3:
A use-after-free bugfix in the smscufx driver and various minor
 error path fixes, smaller build fixes, sysfs fixes and
 typos in comments in the stifb, sisfb, da8xxfb, xilinxfb, sm501fb,
 gbefb and cyber2000fb drivers.
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Merge tag 'fbdev-for-6.1-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/linux-fbdev

Pull fbdev fixes from Helge Deller:
 "A use-after-free bugfix in the smscufx driver and various minor error
  path fixes, smaller build fixes, sysfs fixes and typos in comments in
  the stifb, sisfb, da8xxfb, xilinxfb, sm501fb, gbefb and cyber2000fb
  drivers"

* tag 'fbdev-for-6.1-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/linux-fbdev:
  fbdev: cyber2000fb: fix missing pci_disable_device()
  fbdev: sisfb: use explicitly signed char
  fbdev: smscufx: Fix several use-after-free bugs
  fbdev: xilinxfb: Make xilinxfb_release() return void
  fbdev: sisfb: fix repeated word in comment
  fbdev: gbefb: Convert sysfs snprintf to sysfs_emit
  fbdev: sm501fb: Convert sysfs snprintf to sysfs_emit
  fbdev: stifb: Fall back to cfb_fillrect() on 32-bit HCRX cards
  fbdev: da8xx-fb: Fix error handling in .remove()
  fbdev: MIPS supports iomem addresses
2022-10-30 11:31:14 -07:00
Linus Torvalds
9f127546bb Char/Misc fixes for 6.1-rc3
Here are some small driver fixes for 6.1-rc3.  They include:
 	- iio driver bugfixes
 	- counter driver bugfixes
 	- coresight bugfixes, including a revert and then a second
 	  fix to get it right.
 
 All of these have been in linux-next with no reported problems.
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'char-misc-6.1-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc

Pull char/misc fixes from Greg KH:
 "Some small driver fixes for 6.1-rc3.  They include:

   - iio driver bugfixes

   - counter driver bugfixes

   - coresight bugfixes, including a revert and then a second fix to get
     it right.

  All of these have been in linux-next with no reported problems"

* tag 'char-misc-6.1-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: (21 commits)
  misc: sgi-gru: use explicitly signed char
  coresight: cti: Fix hang in cti_disable_hw()
  Revert "coresight: cti: Fix hang in cti_disable_hw()"
  counter: 104-quad-8: Fix race getting function mode and direction
  counter: microchip-tcb-capture: Handle Signal1 read and Synapse
  coresight: cti: Fix hang in cti_disable_hw()
  coresight: Fix possible deadlock with lock dependency
  counter: ti-ecap-capture: fix IS_ERR() vs NULL check
  counter: Reduce DEFINE_COUNTER_ARRAY_POLARITY() to defining counter_array
  iio: bmc150-accel-core: Fix unsafe buffer attributes
  iio: adxl367: Fix unsafe buffer attributes
  iio: adxl372: Fix unsafe buffer attributes
  iio: at91-sama5d2_adc: Fix unsafe buffer attributes
  iio: temperature: ltc2983: allocate iio channels once
  tools: iio: iio_utils: fix digit calculation
  iio: adc: stm32-adc: fix channel sampling time init
  iio: adc: mcp3911: mask out device ID in debug prints
  iio: adc: mcp3911: use correct id bits
  iio: adc: mcp3911: return proper error code on failure to allocate trigger
  iio: adc: mcp3911: fix sizeof() vs ARRAY_SIZE() bug
  ...
2022-10-30 11:22:33 -07:00
Linus Torvalds
c4d25ce6e9 USB fixes for 6.1-rc3
Here are a few small USB fixes for 6.1-rc3.  Include in here are:
 	- MAINTAINERS update, including a big one for the USB gadget
 	  subsystem.  Many thanks to Felipe for all of the years of hard
 	  work he has done on this codebase, it was greatly appreciated.
 	- dwc3 driver fixes for reported problems.
 	- xhci driver fixes for reported problems.
 	- typec driver fixes for minor issues
 	- uvc gadget driver change, and then revert as it wasn't
 	  relevant for 6.1-final, as it is a new feature and people are
 	  still reviewing and modifying it.
 
 All of these have been in the linux-next tree with no reported issues.
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'usb-6.1-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb

Pull USB fixes from Greg KH:
 "A few small USB fixes for 6.1-rc3. Include in here are:

   - MAINTAINERS update, including a big one for the USB gadget
     subsystem. Many thanks to Felipe for all of the years of hard work
     he has done on this codebase, it was greatly appreciated.

   - dwc3 driver fixes for reported problems.

   - xhci driver fixes for reported problems.

   - typec driver fixes for minor issues

   - uvc gadget driver change, and then revert as it wasn't relevant for
     6.1-final, as it is a new feature and people are still reviewing
     and modifying it.

  All of these have been in the linux-next tree with no reported issues"

* tag 'usb-6.1-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb:
  usb: dwc3: gadget: Don't set IMI for no_interrupt
  usb: dwc3: gadget: Stop processing more requests on IMI
  Revert "usb: gadget: uvc: limit isoc_sg to super speed gadgets"
  xhci: Remove device endpoints from bandwidth list when freeing the device
  xhci-pci: Set runtime PM as default policy on all xHC 1.2 or later devices
  xhci: Add quirk to reset host back to default state at shutdown
  usb: xhci: add XHCI_SPURIOUS_SUCCESS to ASM1042 despite being a V0.96 controller
  usb: dwc3: st: Rely on child's compatible instead of name
  usb: gadget: uvc: limit isoc_sg to super speed gadgets
  usb: bdc: change state when port disconnected
  usb: typec: ucsi: acpi: Implement resume callback
  usb: typec: ucsi: Check the connection on resume
  usb: gadget: aspeed: Fix probe regression
  usb: gadget: uvc: fix sg handling during video encode
  usb: gadget: uvc: fix sg handling in error case
  usb: gadget: uvc: fix dropped frame after missed isoc
  usb: dwc3: gadget: Don't delay End Transfer on delayed_status
  usb: dwc3: Don't switch OTG -> peripheral if extcon is present
  MAINTAINERS: Update maintainers for broadcom USB
  MAINTAINERS: move USB gadget and phy entries under the main USB entry
2022-10-30 10:35:07 -07:00