serial: 8250: introduce RPM guard()s

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Having this, guards like these work:
  guard(serial8250_rpm)(up);
or
  scoped_guard(serial8250_rpm, up) {
    ...
  }

See e.g. "serial: 8250: use guard()s" later in this series.

And make them available to anyone (EXPORT + put in 8250.h) as drivers
open code this anyway.

The _tx ones are not defined as they would have no user.

Signed-off-by: "Jiri Slaby (SUSE)" <jirislaby@kernel.org>
Link: https://lore.kernel.org/r/20250814072456.182853-5-jirislaby@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

...

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Jiri Slaby (SUSE) 2025-08-14 09:24:44 +02:00 • committed by Greg Kroah-Hartman

parent 0fd60b689b

commit 9f8da7b2f9

2 changed files with 9 additions and 2 deletions

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5

drivers/tty/serial/8250/8250.h

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6

drivers/tty/serial/8250/8250_port.c

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