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| author | Russell King <rmk@dyn-67.arm.linux.org.uk> | 2006-04-30 11:13:50 +0100 |
|---|---|---|
| committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2006-04-30 11:13:50 +0100 |
| commit | 68ac64cd3fd89fdaa091701f6ab98a9065e9b1b5 (patch) | |
| tree | 349dc1446bb52b87ce11f7ba2bb52d90679d3dd5 /include/linux/serial_core.h | |
| parent | e0a515bc6a2188f02916e976f419a8640312e32a (diff) | |
| download | lwn-68ac64cd3fd89fdaa091701f6ab98a9065e9b1b5.tar.gz lwn-68ac64cd3fd89fdaa091701f6ab98a9065e9b1b5.zip | |
[SERIAL] Clean up serial locking when obtaining a reference to a port
The locking for the uart_port is over complicated, and can be
simplified if we introduce a flag to indicate that a port is "dead"
and will be removed.
This also helps the validator because it removes a case of non-nested
unlock ordering.
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Diffstat (limited to 'include/linux/serial_core.h')
| -rw-r--r-- | include/linux/serial_core.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/serial_core.h b/include/linux/serial_core.h index c32e60e79dea..bd14858121ea 100644 --- a/include/linux/serial_core.h +++ b/include/linux/serial_core.h @@ -254,6 +254,7 @@ struct uart_port { #define UPF_CONS_FLOW ((__force upf_t) (1 << 23)) #define UPF_SHARE_IRQ ((__force upf_t) (1 << 24)) #define UPF_BOOT_AUTOCONF ((__force upf_t) (1 << 28)) +#define UPF_DEAD ((__force upf_t) (1 << 30)) #define UPF_IOREMAP ((__force upf_t) (1 << 31)) #define UPF_CHANGE_MASK ((__force upf_t) (0x17fff)) |