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-rw-r--r--debian/patches-rt/0038-serial-milbeaut_usio-Use-port-lock-wrappers.patch101
1 files changed, 0 insertions, 101 deletions
diff --git a/debian/patches-rt/0038-serial-milbeaut_usio-Use-port-lock-wrappers.patch b/debian/patches-rt/0038-serial-milbeaut_usio-Use-port-lock-wrappers.patch
deleted file mode 100644
index 47b1b7f3cc..0000000000
--- a/debian/patches-rt/0038-serial-milbeaut_usio-Use-port-lock-wrappers.patch
+++ /dev/null
@@ -1,101 +0,0 @@
-From: Thomas Gleixner <tglx@linutronix.de>
-Date: Thu, 14 Sep 2023 20:43:55 +0206
-Subject: [PATCH 038/134] serial: milbeaut_usio: 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/20230914183831.587273-39-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/milbeaut_usio.c | 16 ++++++++--------
- 1 file changed, 8 insertions(+), 8 deletions(-)
-
---- a/drivers/tty/serial/milbeaut_usio.c
-+++ b/drivers/tty/serial/milbeaut_usio.c
-@@ -207,9 +207,9 @@ static irqreturn_t mlb_usio_rx_irq(int i
- {
- struct uart_port *port = dev_id;
-
-- spin_lock(&port->lock);
-+ uart_port_lock(port);
- mlb_usio_rx_chars(port);
-- spin_unlock(&port->lock);
-+ uart_port_unlock(port);
-
- return IRQ_HANDLED;
- }
-@@ -218,10 +218,10 @@ static irqreturn_t mlb_usio_tx_irq(int i
- {
- struct uart_port *port = dev_id;
-
-- spin_lock(&port->lock);
-+ uart_port_lock(port);
- if (readb(port->membase + MLB_USIO_REG_SSR) & MLB_USIO_SSR_TBI)
- mlb_usio_tx_chars(port);
-- spin_unlock(&port->lock);
-+ uart_port_unlock(port);
-
- return IRQ_HANDLED;
- }
-@@ -267,7 +267,7 @@ static int mlb_usio_startup(struct uart_
- escr = readb(port->membase + MLB_USIO_REG_ESCR);
- if (of_property_read_bool(port->dev->of_node, "auto-flow-control"))
- escr |= MLB_USIO_ESCR_FLWEN;
-- spin_lock_irqsave(&port->lock, flags);
-+ uart_port_lock_irqsave(port, &flags);
- writeb(0, port->membase + MLB_USIO_REG_SCR);
- writeb(escr, port->membase + MLB_USIO_REG_ESCR);
- writeb(MLB_USIO_SCR_UPCL, port->membase + MLB_USIO_REG_SCR);
-@@ -282,7 +282,7 @@ static int mlb_usio_startup(struct uart_
-
- writeb(MLB_USIO_SCR_TXE | MLB_USIO_SCR_RIE | MLB_USIO_SCR_TBIE |
- MLB_USIO_SCR_RXE, port->membase + MLB_USIO_REG_SCR);
-- spin_unlock_irqrestore(&port->lock, flags);
-+ uart_port_unlock_irqrestore(port, flags);
-
- return 0;
- }
-@@ -337,7 +337,7 @@ static void mlb_usio_set_termios(struct
- else
- quot = 0;
-
-- spin_lock_irqsave(&port->lock, flags);
-+ uart_port_lock_irqsave(port, &flags);
- uart_update_timeout(port, termios->c_cflag, baud);
- port->read_status_mask = MLB_USIO_SSR_ORE | MLB_USIO_SSR_RDRF |
- MLB_USIO_SSR_TDRE;
-@@ -367,7 +367,7 @@ static void mlb_usio_set_termios(struct
- writew(BIT(12), port->membase + MLB_USIO_REG_FBYTE);
- writeb(MLB_USIO_SCR_RIE | MLB_USIO_SCR_RXE | MLB_USIO_SCR_TBIE |
- MLB_USIO_SCR_TXE, port->membase + MLB_USIO_REG_SCR);
-- spin_unlock_irqrestore(&port->lock, flags);
-+ uart_port_unlock_irqrestore(port, flags);
- }
-
- static const char *mlb_usio_type(struct uart_port *port)