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-rw-r--r--debian/patches-rt/0016-serial-amba-pl010-Use-port-lock-wrappers.patch112
1 files changed, 0 insertions, 112 deletions
diff --git a/debian/patches-rt/0016-serial-amba-pl010-Use-port-lock-wrappers.patch b/debian/patches-rt/0016-serial-amba-pl010-Use-port-lock-wrappers.patch
deleted file mode 100644
index f3ba735bfc..0000000000
--- a/debian/patches-rt/0016-serial-amba-pl010-Use-port-lock-wrappers.patch
+++ /dev/null
@@ -1,112 +0,0 @@
-From: Thomas Gleixner <tglx@linutronix.de>
-Date: Thu, 14 Sep 2023 20:43:33 +0206
-Subject: [PATCH 016/134] serial: amba-pl010: 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/20230914183831.587273-17-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/amba-pl010.c | 20 ++++++++++----------
- 1 file changed, 10 insertions(+), 10 deletions(-)
-
---- a/drivers/tty/serial/amba-pl010.c
-+++ b/drivers/tty/serial/amba-pl010.c
-@@ -207,7 +207,7 @@ static irqreturn_t pl010_int(int irq, vo
- unsigned int status, pass_counter = AMBA_ISR_PASS_LIMIT;
- int handled = 0;
-
-- spin_lock(&port->lock);
-+ uart_port_lock(port);
-
- status = readb(port->membase + UART010_IIR);
- if (status) {
-@@ -228,7 +228,7 @@ static irqreturn_t pl010_int(int irq, vo
- handled = 1;
- }
-
-- spin_unlock(&port->lock);
-+ uart_port_unlock(port);
-
- return IRQ_RETVAL(handled);
- }
-@@ -270,14 +270,14 @@ static void pl010_break_ctl(struct uart_
- unsigned long flags;
- unsigned int lcr_h;
-
-- spin_lock_irqsave(&port->lock, flags);
-+ uart_port_lock_irqsave(port, &flags);
- lcr_h = readb(port->membase + UART010_LCRH);
- if (break_state == -1)
- lcr_h |= UART01x_LCRH_BRK;
- else
- lcr_h &= ~UART01x_LCRH_BRK;
- writel(lcr_h, port->membase + UART010_LCRH);
-- spin_unlock_irqrestore(&port->lock, flags);
-+ uart_port_unlock_irqrestore(port, flags);
- }
-
- static int pl010_startup(struct uart_port *port)
-@@ -385,7 +385,7 @@ pl010_set_termios(struct uart_port *port
- if (port->fifosize > 1)
- lcr_h |= UART01x_LCRH_FEN;
-
-- spin_lock_irqsave(&port->lock, flags);
-+ uart_port_lock_irqsave(port, &flags);
-
- /*
- * Update the per-port timeout.
-@@ -438,22 +438,22 @@ pl010_set_termios(struct uart_port *port
- writel(lcr_h, port->membase + UART010_LCRH);
- writel(old_cr, port->membase + UART010_CR);
-
-- spin_unlock_irqrestore(&port->lock, flags);
-+ uart_port_unlock_irqrestore(port, flags);
- }
-
- static void pl010_set_ldisc(struct uart_port *port, struct ktermios *termios)
- {
- if (termios->c_line == N_PPS) {
- port->flags |= UPF_HARDPPS_CD;
-- spin_lock_irq(&port->lock);
-+ uart_port_lock_irq(port);
- pl010_enable_ms(port);
-- spin_unlock_irq(&port->lock);
-+ uart_port_unlock_irq(port);
- } else {
- port->flags &= ~UPF_HARDPPS_CD;
- if (!UART_ENABLE_MS(port, termios->c_cflag)) {
-- spin_lock_irq(&port->lock);
-+ uart_port_lock_irq(port);
- pl010_disable_ms(port);
-- spin_unlock_irq(&port->lock);
-+ uart_port_unlock_irq(port);
- }
- }
- }