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-rw-r--r--debian/patches-rt/0010-serial-8250_fsl-Use-port-lock-wrappers.patch63
1 files changed, 0 insertions, 63 deletions
diff --git a/debian/patches-rt/0010-serial-8250_fsl-Use-port-lock-wrappers.patch b/debian/patches-rt/0010-serial-8250_fsl-Use-port-lock-wrappers.patch
deleted file mode 100644
index abe7c81a98..0000000000
--- a/debian/patches-rt/0010-serial-8250_fsl-Use-port-lock-wrappers.patch
+++ /dev/null
@@ -1,63 +0,0 @@
-From: Thomas Gleixner <tglx@linutronix.de>
-Date: Thu, 14 Sep 2023 20:43:27 +0206
-Subject: [PATCH 010/134] serial: 8250_fsl: Use port lock wrappers
-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>
-Signed-off-by: John Ogness <john.ogness@linutronix.de>
-Link: https://lore.kernel.org/r/20230914183831.587273-11-john.ogness@linutronix.de
-Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
-Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
----
- drivers/tty/serial/8250/8250_fsl.c | 6 +++---
- 1 file changed, 3 insertions(+), 3 deletions(-)
-
---- a/drivers/tty/serial/8250/8250_fsl.c
-+++ b/drivers/tty/serial/8250/8250_fsl.c
-@@ -30,11 +30,11 @@ int fsl8250_handle_irq(struct uart_port
- unsigned int iir;
- struct uart_8250_port *up = up_to_u8250p(port);
-
-- spin_lock_irqsave(&up->port.lock, flags);
-+ uart_port_lock_irqsave(&up->port, &flags);
-
- iir = port->serial_in(port, UART_IIR);
- if (iir & UART_IIR_NO_INT) {
-- spin_unlock_irqrestore(&up->port.lock, flags);
-+ uart_port_unlock_irqrestore(&up->port, flags);
- return 0;
- }
-
-@@ -54,7 +54,7 @@ int fsl8250_handle_irq(struct uart_port
- if (unlikely(up->lsr_saved_flags & UART_LSR_BI)) {
- up->lsr_saved_flags &= ~UART_LSR_BI;
- port->serial_in(port, UART_RX);
-- spin_unlock_irqrestore(&up->port.lock, flags);
-+ uart_port_unlock_irqrestore(&up->port, flags);
- return 1;
- }
-