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| author | Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com> | 2025-01-16 20:22:47 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2025-01-17 12:54:37 +0100 |
| commit | 9f7dea875cc7f9c1a56a5c688290634a59cd1420 (patch) | |
| tree | 89d99e0ea6b692dc83b68dfae939e5b041b3e405 /net/lapb/lapb_timer.c | |
| parent | 239f11209e5f282e16f5241b99256e25dd0614b6 (diff) | |
| download | linux-9f7dea875cc7f9c1a56a5c688290634a59cd1420.tar.gz linux-9f7dea875cc7f9c1a56a5c688290634a59cd1420.tar.bz2 linux-9f7dea875cc7f9c1a56a5c688290634a59cd1420.zip | |
serial: sh-sci: Do not probe the serial port if its slot in sci_ports[] is in use
In the sh-sci driver, sci_ports[0] is used by earlycon. If the earlycon is
still active when sci_probe() is called and the new serial port is supposed
to map to sci_ports[0], return -EBUSY to prevent breaking the earlycon.
This situation should occurs in debug scenarios, and users should be
aware of the potential conflict.
Fixes: 0b0cced19ab1 ("serial: sh-sci: Add CONFIG_SERIAL_EARLYCON support")
Cc: stable@vger.kernel.org
Signed-off-by: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
Link: https://lore.kernel.org/r/20250116182249.3828577-4-claudiu.beznea.uj@bp.renesas.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'net/lapb/lapb_timer.c')
0 files changed, 0 insertions, 0 deletions