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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-18 18:50:40 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-18 18:50:59 +0000 |
commit | ba6b167af6ee5e63ca79ad22e7719644aed12b2c (patch) | |
tree | 62272cbe2fb256ecb90fa6e2cbfa509541954d28 /debian/patches-rt/0046-serial-core-Provide-low-level-functions-to-port-lock.patch | |
parent | Merging upstream version 6.8.9. (diff) | |
download | linux-ba6b167af6ee5e63ca79ad22e7719644aed12b2c.tar.xz linux-ba6b167af6ee5e63ca79ad22e7719644aed12b2c.zip |
Merging debian version 6.8.9-1.
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'debian/patches-rt/0046-serial-core-Provide-low-level-functions-to-port-lock.patch')
-rw-r--r-- | debian/patches-rt/0046-serial-core-Provide-low-level-functions-to-port-lock.patch | 42 |
1 files changed, 0 insertions, 42 deletions
diff --git a/debian/patches-rt/0046-serial-core-Provide-low-level-functions-to-port-lock.patch b/debian/patches-rt/0046-serial-core-Provide-low-level-functions-to-port-lock.patch deleted file mode 100644 index b6c03021b1..0000000000 --- a/debian/patches-rt/0046-serial-core-Provide-low-level-functions-to-port-lock.patch +++ /dev/null @@ -1,42 +0,0 @@ -From: John Ogness <john.ogness@linutronix.de> -Date: Mon, 11 Dec 2023 09:19:18 +0000 -Subject: [PATCH 46/50] serial: core: Provide low-level functions to port lock -Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/6.7/older/patches-6.7-rt6.tar.xz - -The nbcon console's driver_enter() and driver_exit() callbacks need -to lock the port lock in order to synchronize against other hardware -activity (such as adjusting baud rates). However, they cannot use -the uart_port_lock() wrappers because the printk subsystem will -perform nbcon locking after calling the driver_enter() callback. - -Provide low-level variants __uart_port_lock_irqsave() and -__uart_port_unlock_irqrestore() for this purpose. These are only -to be used by the driver_enter()/driver_exit() callbacks. - -Signed-off-by: John Ogness <john.ogness@linutronix.de> -Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> ---- - include/linux/serial_core.h | 12 ++++++++++++ - 1 file changed, 12 insertions(+) - ---- a/include/linux/serial_core.h -+++ b/include/linux/serial_core.h -@@ -681,6 +681,18 @@ static inline void uart_port_unlock_irqr - spin_unlock_irqrestore(&up->lock, flags); - } - -+/* Only for use in the console->driver_enter() callback. */ -+static inline void __uart_port_lock_irqsave(struct uart_port *up, unsigned long *flags) -+{ -+ spin_lock_irqsave(&up->lock, *flags); -+} -+ -+/* Only for use in the console->driver_exit() callback. */ -+static inline void __uart_port_unlock_irqrestore(struct uart_port *up, unsigned long flags) -+{ -+ spin_unlock_irqrestore(&up->lock, flags); -+} -+ - static inline int serial_port_in(struct uart_port *up, int offset) - { - return up->serial_in(up, offset); |