Adding debian version 5.10.209-2.debian/5.10.209-2

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 60 insertions, 0 deletions

diff --git a/debian/patches-rt/0267-tty-serial-pl011-Make-the-locking-work-on-RT.patch b/debian/patches-rt/0267-tty-serial-pl011-Make-the-locking-work-on-RT.patch
new file mode 100644
index 000000000..73b68ab8d
--- /dev/null
+++ b/debian/patches-rt/0267-tty-serial-pl011-Make-the-locking-work-on-RT.patch
@@ -0,0 +1,60 @@
+From 822739997ff16caa50f619a00344655f21d65a4b Mon Sep 17 00:00:00 2001
+From: Thomas Gleixner <tglx@linutronix.de>
+Date: Tue, 8 Jan 2013 21:36:51 +0100
+Subject: [PATCH 267/323] tty/serial/pl011: Make the locking work on RT
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.10/older/patches-5.10.204-rt100.tar.xz
+
+The lock is a sleeping lock and local_irq_save() is not the optimsation
+we are looking for. Redo it to make it work on -RT and non-RT.
+
+Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
+---
+ drivers/tty/serial/amba-pl011.c | 17 +++++++++++------
+ 1 file changed, 11 insertions(+), 6 deletions(-)
+
+diff --git a/drivers/tty/serial/amba-pl011.c b/drivers/tty/serial/amba-pl011.c
+index d4a93a94b4ca..275c625e3eb9 100644
+--- a/drivers/tty/serial/amba-pl011.c
++++ b/drivers/tty/serial/amba-pl011.c
+@@ -2207,18 +2207,24 @@ pl011_console_write(struct console *co, const char *s, unsigned int count)
+ {
+ 	struct uart_amba_port *uap = amba_ports[co->index];
+ 	unsigned int old_cr = 0, new_cr;
+-	unsigned long flags;
++	unsigned long flags = 0;
+ 	int locked = 1;
+ 
+ 	clk_enable(uap->clk);
+ 
+-	local_irq_save(flags);
++	/*
++	 * local_irq_save(flags);
++	 *
++	 * This local_irq_save() is nonsense. If we come in via sysrq
++	 * handling then interrupts are already disabled. Aside of
++	 * that the port.sysrq check is racy on SMP regardless.
++	*/
+ 	if (uap->port.sysrq)
+ 		locked = 0;
+ 	else if (oops_in_progress)
+-		locked = spin_trylock(&uap->port.lock);
++		locked = spin_trylock_irqsave(&uap->port.lock, flags);
+ 	else
+-		spin_lock(&uap->port.lock);
++		spin_lock_irqsave(&uap->port.lock, flags);
+ 
+ 	/*
+ 	 *	First save the CR then disable the interrupts
+@@ -2244,8 +2250,7 @@ pl011_console_write(struct console *co, const char *s, unsigned int count)
+ 		pl011_write(old_cr, uap, REG_CR);
+ 
+ 	if (locked)
+-		spin_unlock(&uap->port.lock);
+-	local_irq_restore(flags);
++		spin_unlock_irqrestore(&uap->port.lock, flags);
+ 
+ 	clk_disable(uap->clk);
+ }
+-- 
+2.43.0
+