diff options
| author | Russell King <rmk@flint.arm.linux.org.uk> | 2003-03-09 14:31:24 +0000 |
|---|---|---|
| committer | Linus Torvalds <torvalds@home.transmeta.com> | 2003-03-09 14:31:24 +0000 |
| commit | d9a6bc6ef013bb6bad03b760fb00219b72a5f8a7 (patch) | |
| tree | 7a31b2b68212caee93b738261734d8a03f546689 /include | |
| parent | 1208e2cb97bcf3492cd37ae3b048046abecba150 (diff) | |
[SERIAL] Add per-port semaphore.
Add a per-port semaphore to protect against simultaneous opens,
closes, hangups, and the like. This removes the need for the
UIF_CLOSING flag, as well as the extra tests and wait queues.
Disable the old PM code for now - it is incompatible with the
per-port semaphore.
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/serial_core.h | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/include/linux/serial_core.h b/include/linux/serial_core.h index 0ea3262a03b6..859550b04eaa 100644 --- a/include/linux/serial_core.h +++ b/include/linux/serial_core.h @@ -211,6 +211,8 @@ struct uart_state { struct uart_info *info; struct uart_port *port; + struct semaphore sem; + #ifdef CONFIG_PM struct pm_dev *pm; #endif @@ -235,7 +237,6 @@ struct uart_info { */ #define UIF_CHECK_CD (1 << 25) #define UIF_CTS_FLOW (1 << 26) -#define UIF_CLOSING (1 << 27) #define UIF_NORMAL_ACTIVE (1 << 29) #define UIF_INITIALIZED (1 << 31) |