From 393b520a99b21d9ec6d4bb32e7c05bbb4f6dc777 Mon Sep 17 00:00:00 2001 From: Parker Newman Date: Wed, 17 Apr 2024 16:31:25 -0400 Subject: [PATCH] serial: exar: add optional board_init function Add an optional "board_init()" function pointer to struct exar8250_board which is called once during probe prior to setting up the ports. It will be used in subsequent patches of this series. Signed-off-by: Parker Newman Link: https://lore.kernel.org/r/0e72a3154114c733283ff273bc1e31456ee101f4.1713382717.git.pnewman@connecttech.com Signed-off-by: Greg Kroah-Hartman --- drivers/tty/serial/8250/8250_exar.c | 13 ++++++++++++- 1 file changed, 12 insertions(+), 1 deletion(-) diff --git a/drivers/tty/serial/8250/8250_exar.c b/drivers/tty/serial/8250/8250_exar.c index 72385c7d2eda8..f14f73d250bbb 100644 --- a/drivers/tty/serial/8250/8250_exar.c +++ b/drivers/tty/serial/8250/8250_exar.c @@ -177,12 +177,14 @@ struct exar8250_platform { * struct exar8250_board - board information * @num_ports: number of serial ports * @reg_shift: describes UART register mapping in PCI memory - * @setup: quirk run at ->probe() stage + * @board_init: quirk run once at ->probe() stage before setting up ports + * @setup: quirk run at ->probe() stage for each port * @exit: quirk run at ->remove() stage */ struct exar8250_board { unsigned int num_ports; unsigned int reg_shift; + int (*board_init)(struct exar8250 *priv, struct pci_dev *pcidev); int (*setup)(struct exar8250 *, struct pci_dev *, struct uart_8250_port *, int); void (*exit)(struct pci_dev *pcidev); @@ -773,6 +775,15 @@ exar_pci_probe(struct pci_dev *pcidev, const struct pci_device_id *ent) if (rc) return rc; + if (board->board_init) { + rc = board->board_init(priv, pcidev); + if (rc) { + dev_err_probe(&pcidev->dev, rc, + "failed to init serial board\n"); + return rc; + } + } + for (i = 0; i < nr_ports && i < maxnr; i++) { rc = board->setup(priv, pcidev, &uart, i); if (rc) { -- 2.30.2