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-rw-r--r--debian/patches-rt/0002-serial-core-Use-lock-wrappers.patch93
1 files changed, 0 insertions, 93 deletions
diff --git a/debian/patches-rt/0002-serial-core-Use-lock-wrappers.patch b/debian/patches-rt/0002-serial-core-Use-lock-wrappers.patch
deleted file mode 100644
index ad41a3dc78..0000000000
--- a/debian/patches-rt/0002-serial-core-Use-lock-wrappers.patch
+++ /dev/null
@@ -1,93 +0,0 @@
-From: Thomas Gleixner <tglx@linutronix.de>
-Date: Thu, 14 Sep 2023 20:43:19 +0206
-Subject: [PATCH 002/134] serial: core: Use lock wrappers
-MIME-Version: 1.0
-Content-Type: text/plain; charset=UTF-8
-Content-Transfer-Encoding: 8bit
-Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/6.6/older/patches-6.6.7-rt18.tar.xz
-
-When a serial port is used for kernel console output, then all
-modifications to the UART registers which are done from other contexts,
-e.g. getty, termios, are interference points for the kernel console.
-
-So far this has been ignored and the printk output is based on the
-principle of hope. The rework of the console infrastructure which aims to
-support threaded and atomic consoles, requires to mark sections which
-modify the UART registers as unsafe. This allows the atomic write function
-to make informed decisions and eventually to restore operational state. It
-also allows to prevent the regular UART code from modifying UART registers
-while printk output is in progress.
-
-All modifications of UART registers are guarded by the UART port lock,
-which provides an obvious synchronization point with the console
-infrastructure.
-
-To avoid adding this functionality to all UART drivers, wrap the
-spin_[un]lock*() invocations for uart_port::lock into helper functions
-which just contain the spin_[un]lock*() invocations for now. In a
-subsequent step these helpers will gain the console synchronization
-mechanisms.
-
-Converted with coccinelle. No functional change.
-
-Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
-Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
-Signed-off-by: John Ogness <john.ogness@linutronix.de>
-Link: https://lore.kernel.org/r/20230914183831.587273-3-john.ogness@linutronix.de
-Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
-Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
----
- include/linux/serial_core.h | 12 ++++++------
- 1 file changed, 6 insertions(+), 6 deletions(-)
-
---- a/include/linux/serial_core.h
-+++ b/include/linux/serial_core.h
-@@ -1035,14 +1035,14 @@ static inline void uart_unlock_and_check
- u8 sysrq_ch;
-
- if (!port->has_sysrq) {
-- spin_unlock(&port->lock);
-+ uart_port_unlock(port);
- return;
- }
-
- sysrq_ch = port->sysrq_ch;
- port->sysrq_ch = 0;
-
-- spin_unlock(&port->lock);
-+ uart_port_unlock(port);
-
- if (sysrq_ch)
- handle_sysrq(sysrq_ch);
-@@ -1054,14 +1054,14 @@ static inline void uart_unlock_and_check
- u8 sysrq_ch;
-
- if (!port->has_sysrq) {
-- spin_unlock_irqrestore(&port->lock, flags);
-+ uart_port_unlock_irqrestore(port, flags);
- return;
- }
-
- sysrq_ch = port->sysrq_ch;
- port->sysrq_ch = 0;
-
-- spin_unlock_irqrestore(&port->lock, flags);
-+ uart_port_unlock_irqrestore(port, flags);
-
- if (sysrq_ch)
- handle_sysrq(sysrq_ch);
-@@ -1077,12 +1077,12 @@ static inline int uart_prepare_sysrq_cha
- }
- static inline void uart_unlock_and_check_sysrq(struct uart_port *port)
- {
-- spin_unlock(&port->lock);
-+ uart_port_unlock(port);
- }
- static inline void uart_unlock_and_check_sysrq_irqrestore(struct uart_port *port,
- unsigned long flags)
- {
-- spin_unlock_irqrestore(&port->lock, flags);
-+ uart_port_unlock_irqrestore(port, flags);
- }
- #endif /* CONFIG_MAGIC_SYSRQ_SERIAL */
-