linux-toradex.git/drivers/s390/char, branch v6.3

Merge tag 'tty-6.3-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty

2023-02-24T20:17:14+00:00

Pull tty / serial driver updates from Greg KH:
 "Here is the big set of serial and tty driver updates for 6.3-rc1.

  Once again, Jiri and Ilpo have done a number of core vt and tty/serial
  layer cleanups that were much needed and appreciated. Other than that,
  it's just a bunch of little tty/serial driver updates:

   - qcom-geni-serial driver updates

   - liteuart driver updates

   - hvcs driver cleanups

   - n_gsm updates and additions for new features

   - more 8250 device support added

   - fpga/dfl update and additions

   - imx serial driver updates

   - fsl_lpuart updates

   - other tiny fixes and updates for serial drivers

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

* tag 'tty-6.3-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty: (143 commits)
  tty: n_gsm: add keep alive support
  serial: imx: remove a redundant check
  dt-bindings: serial: snps-dw-apb-uart: add dma & dma-names properties
  soc: qcom: geni-se: Move qcom-geni-se.h to linux/soc/qcom/geni-se.h
  tty: n_gsm: add TIOCMIWAIT support
  tty: n_gsm: add RING/CD control support
  tty: n_gsm: mark unusable ioctl structure fields accordingly
  serial: imx: get rid of registers shadowing
  serial: imx: refine local variables in rxint()
  serial: imx: stop using USR2 in FIFO reading loop
  serial: imx: remove redundant USR2 read from FIFO reading loop
  serial: imx: do not break from FIFO reading loop prematurely
  serial: imx: do not sysrq broken chars
  serial: imx: work-around for hardware RX flood
  serial: imx: factor-out common code to imx_uart_soft_reset()
  serial: 8250_pci1xxxx: Add power management functions to quad-uart driver
  serial: 8250_pci1xxxx: Add RS485 support to quad-uart driver
  serial: 8250_pci1xxxx: Add driver for quad-uart support
  serial: 8250_pci: Add serial8250_pci_setup_port definition in 8250_pcilib.c
  tty: pcn_uart: fix memory leak with using debugfs_lookup()
  ...

s390/hmcdrv: use strscpy() instead of strlcpy()

2023-02-06T10:13:53+00:00

Given that strlcpy() is deprecated use strscpy() instead.

Signed-off-by: Heiko Carstens

tty: Cleanup tty_port_set_initialized() bool parameter

2023-01-19T15:04:34+00:00

Make callers pass true/false consistently for bool val.

Reviewed-by: Samuel Iglesias Gonsalvez 
Reviewed-by: Jiri Slaby 
Signed-off-by: Ilpo Järvinen 
Link: https://lore.kernel.org/r/20230117090358.4796-2-ilpo.jarvinen@linux.intel.com
Signed-off-by: Greg Kroah-Hartman

s390/early: fix sclp_early_sccb variable lifetime

2023-01-13T13:15:04+00:00

Commit ada1da31ce34 ("s390/sclp: sort out physical vs
virtual pointers usage") fixed the notion of virtual
address for sclp_early_sccb pointer. However, it did
not take into account that kasan_early_init() can also
output messages and sclp_early_sccb should be adjusted
by the time kasan_early_init() is called.

Currently it is not a problem, since virtual and physical
addresses on s390 are the same. Nevertheless, should they
ever differ, this would cause an invalid pointer access.

Fixes: ada1da31ce34 ("s390/sclp: sort out physical vs virtual pointers usage")
Reviewed-by: Heiko Carstens 
Signed-off-by: Alexander Gordeev 
Signed-off-by: Heiko Carstens

s390/con3270: move condev definition

2023-01-10T13:38:58+00:00

Fix this for allmodconfig:

drivers/s390/char/con3270.c:43:24: error: 'condev' defined but not used [-Werror=unused-variable]
 static struct tty3270 *condev;
                        ^~~~~~

Reported-by: Stephen Rothwell 
Fixes: c17fe081ac1f ("s390/3270: unify con3270 + tty3270")
Signed-off-by: Heiko Carstens

s390/con3270: add special output handling when oops_in_progress is set

2023-01-09T13:34:06+00:00

Normally a user can scroll back with PF7/PF8 if printed messages are
outside of the visible screen area. This doesn't work when the kernel
crashes, because the scrollback handling is done by the kernel, which
is no longer alive after the kernel crash. Add code to always print
all dirty lines in the screen buffer, so the user can scroll back with
the terminal scrollback keys (Page Up/Down).

Signed-off-by: Sven Schnelle 
Acked-by: Heiko Carstens 
Signed-off-by: Heiko Carstens

s390/con3270: set SBA and RA addresses when converting lines

2023-01-09T13:34:06+00:00

Now that lines are converted during output, the RA and SBA no longer
need to get updated as an additional step. Instead set them when
converting the line.

Signed-off-by: Sven Schnelle 
Acked-by: Heiko Carstens 
Signed-off-by: Heiko Carstens

s390/con3270: simplify update flags

2023-01-09T13:34:06+00:00

Make TTY3270_UPDATE_ALL the sum of all TTY3270_* flags, so we
don't need any special handling for it.

Signed-off-by: Sven Schnelle 
Acked-by: Heiko Carstens 
Signed-off-by: Heiko Carstens

s390/con3270: return from notifier when activate view fails

2023-01-09T13:34:06+00:00

When activating the view fails (in this case because the 3270
is disconnected) return from the notifer callback. Otherwise
the system will deadlock.

Signed-off-by: Sven Schnelle 
Acked-by: Heiko Carstens 
Signed-off-by: Heiko Carstens

s390/fs3270: split header files

2023-01-09T13:34:05+00:00

In order to use the fs3270 one would need at least the ioctl definitions
in uapi. Add two new include files in uapi, which contain:

fs3270: ioctl number declarations + returned struct for TUBGETMOD.
raw3270: all the orders, attributes and similar stuff used with 3270
terminals.

Signed-off-by: Sven Schnelle 
Acked-by: Heiko Carstens 
Signed-off-by: Heiko Carstens