From 7c7e6c8924e7bf98db4e5b2edb202842003c00c2 Mon Sep 17 00:00:00 2001 From: Niklas Schnelle Date: Thu, 24 Oct 2024 19:54:43 +0200 Subject: tty: serial: handle HAS_IOPORT dependencies In a future patch HAS_IOPORT=n will disable inb()/outb() and friends at compile time. We thus need to add HAS_IOPORT as dependency for those drivers using them unconditionally. Some 8250 serial drivers support MMIO only use, so fence only the parts requiring I/O ports and print an error message if a device can't be supported with the current configuration. Co-developed-by: Arnd Bergmann Signed-off-by: Arnd Bergmann Acked-by: Greg Kroah-Hartman Reviewed-by: Maciej W. Rozycki Signed-off-by: Niklas Schnelle Signed-off-by: Arnd Bergmann --- include/linux/serial_core.h | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'include/linux/serial_core.h') diff --git a/include/linux/serial_core.h b/include/linux/serial_core.h index 4ab65874a850..743b4afaad4c 100644 --- a/include/linux/serial_core.h +++ b/include/linux/serial_core.h @@ -505,7 +505,11 @@ struct uart_port { * The remaining bits are serial-core specific and not modifiable by * userspace. */ +#ifdef CONFIG_HAS_IOPORT #define UPF_FOURPORT ((__force upf_t) ASYNC_FOURPORT /* 1 */ ) +#else +#define UPF_FOURPORT 0 +#endif #define UPF_SAK ((__force upf_t) ASYNC_SAK /* 2 */ ) #define UPF_SPD_HI ((__force upf_t) ASYNC_SPD_HI /* 4 */ ) #define UPF_SPD_VHI ((__force upf_t) ASYNC_SPD_VHI /* 5 */ ) -- cgit v1.2.3