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-rw-r--r--debian/patches-rt/0054-serial-sb1250-duart-Use-port-lock-wrappers.patch85
1 files changed, 0 insertions, 85 deletions
diff --git a/debian/patches-rt/0054-serial-sb1250-duart-Use-port-lock-wrappers.patch b/debian/patches-rt/0054-serial-sb1250-duart-Use-port-lock-wrappers.patch
deleted file mode 100644
index e5aeb528fe..0000000000
--- a/debian/patches-rt/0054-serial-sb1250-duart-Use-port-lock-wrappers.patch
+++ /dev/null
@@ -1,85 +0,0 @@
-From: Thomas Gleixner <tglx@linutronix.de>
-Date: Thu, 14 Sep 2023 20:44:11 +0206
-Subject: [PATCH 054/134] serial: sb1250-duart: 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/20230914183831.587273-55-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/sb1250-duart.c | 12 ++++++------
- 1 file changed, 6 insertions(+), 6 deletions(-)
-
---- a/drivers/tty/serial/sb1250-duart.c
-+++ b/drivers/tty/serial/sb1250-duart.c
-@@ -610,7 +610,7 @@ static void sbd_set_termios(struct uart_
- else
- aux &= ~M_DUART_CTS_CHNG_ENA;
-
-- spin_lock(&uport->lock);
-+ uart_port_lock(uport);
-
- if (sport->tx_stopped)
- command |= M_DUART_TX_DIS;
-@@ -632,7 +632,7 @@ static void sbd_set_termios(struct uart_
-
- write_sbdchn(sport, R_DUART_CMD, command);
-
-- spin_unlock(&uport->lock);
-+ uart_port_unlock(uport);
- }
-
-
-@@ -839,22 +839,22 @@ static void sbd_console_write(struct con
- unsigned int mask;
-
- /* Disable transmit interrupts and enable the transmitter. */
-- spin_lock_irqsave(&uport->lock, flags);
-+ uart_port_lock_irqsave(uport, &flags);
- mask = read_sbdshr(sport, R_DUART_IMRREG((uport->line) % 2));
- write_sbdshr(sport, R_DUART_IMRREG((uport->line) % 2),
- mask & ~M_DUART_IMR_TX);
- write_sbdchn(sport, R_DUART_CMD, M_DUART_TX_EN);
-- spin_unlock_irqrestore(&uport->lock, flags);
-+ uart_port_unlock_irqrestore(uport, flags);
-
- uart_console_write(&sport->port, s, count, sbd_console_putchar);
-
- /* Restore transmit interrupts and the transmitter enable. */
-- spin_lock_irqsave(&uport->lock, flags);
-+ uart_port_lock_irqsave(uport, &flags);
- sbd_line_drain(sport);
- if (sport->tx_stopped)
- write_sbdchn(sport, R_DUART_CMD, M_DUART_TX_DIS);
- write_sbdshr(sport, R_DUART_IMRREG((uport->line) % 2), mask);
-- spin_unlock_irqrestore(&uport->lock, flags);
-+ uart_port_unlock_irqrestore(uport, flags);
- }
-
- static int __init sbd_console_setup(struct console *co, char *options)