The port count of the PX-257 Rev3 is actually 2, not 4. Fixes: ef5a03a26c87 ("tty: 8250: Add support for Brainboxes PX cards.") Cc: stable@xxxxxxxxxxxxxxx Signed-off-by: Cameron Williams <cang1@xxxxxxxxxx> --- For stable: This patch is only applicable to 5.15 LTS and up, other LTS kernels dont have PX card support. v3 - v4: Split patch v3 part 5 into multiple Fixes patches and an Additions patch. Add Fixes: and Cc: tag. v2 - v3: Alter commit message a little to make the additions/fixes cleaner Re-submit patch series using git send-email to make threading work. v1 - v2: This is a resubmission series for the patch series below. That series was lots of changes sent to lots of maintainers, this series is just for the tty/serial/8250 subsystem. [1] https://lore.kernel.org/all/DU0PR02MB789950E64D808DB57E9D7312C4F8A@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx/ [2] https://lore.kernel.org/all/DU0PR02MB7899DE53DFC900EFB50E53F2C4F8A@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx/ [3] https://lore.kernel.org/all/DU0PR02MB7899033E7E81EAF3694BC20AC4F8A@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx/ [4] https://lore.kernel.org/all/DU0PR02MB7899EABA8C3DCAC94DCC79D4C4F8A@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx/ drivers/tty/serial/8250/8250_pci.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/tty/serial/8250/8250_pci.c b/drivers/tty/serial/8250/8250_pci.c index b0a632415d8e..59074a709254 100644 --- a/drivers/tty/serial/8250/8250_pci.c +++ b/drivers/tty/serial/8250/8250_pci.c @@ -5180,7 +5180,7 @@ static const struct pci_device_id serial_pci_tbl[] = { { PCI_VENDOR_ID_INTASHIELD, 0x4015, PCI_ANY_ID, PCI_ANY_ID, 0, 0, - pbn_oxsemi_4_15625000 }, + pbn_oxsemi_2_15625000 }, /* * Brainboxes PX-260/PX-701 */ -- 2.42.0