diff options
| author | Niklas Schnelle <schnelle@linux.ibm.com> | 2024-10-24 19:54:43 +0200 |
|---|---|---|
| committer | Arnd Bergmann <arnd@arndb.de> | 2024-10-28 21:44:28 +0000 |
| commit | 7c7e6c8924e7bf98db4e5b2edb202842003c00c2 (patch) | |
| tree | 11d64c1d26096e237753aac8a2b857d17fa6ae82 /include | |
| parent | f663c6ae36205bdaae55f679f1c5d7a3221f9d00 (diff) | |
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 <arnd@kernel.org>
Signed-off-by: Arnd Bergmann <arnd@kernel.org>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Reviewed-by: Maciej W. Rozycki <macro@orcam.me.uk>
Signed-off-by: Niklas Schnelle <schnelle@linux.ibm.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/serial_core.h | 4 |
1 files changed, 4 insertions, 0 deletions
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 */ ) |