Adding debian version 4.19.249-2.debian/4.19.249-2debian

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

1 files changed, 98 insertions, 0 deletions

diff --git a/debian/patches-rt/0029-arm-at91-do-not-disable-enable-clocks-in-a-row.patch b/debian/patches-rt/0029-arm-at91-do-not-disable-enable-clocks-in-a-row.patch
new file mode 100644
index 000000000..8bf2d54e0
--- /dev/null
+++ b/debian/patches-rt/0029-arm-at91-do-not-disable-enable-clocks-in-a-row.patch
@@ -0,0 +1,98 @@
+From 61b697c120be1e50542dfa879ebb522bf834b8d2 Mon Sep 17 00:00:00 2001
+From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
+Date: Wed, 9 Mar 2016 10:51:06 +0100
+Subject: [PATCH 029/347] arm: at91: do not disable/enable clocks in a row
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.246-rt110.tar.xz
+
+Currently the driver will disable the clock and enable it one line later
+if it is switching from periodic mode into one shot.
+This can be avoided and causes a needless warning on -RT.
+
+Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
+---
+ drivers/clocksource/tcb_clksrc.c | 33 ++++++++++++++++++++++++++++----
+ 1 file changed, 29 insertions(+), 4 deletions(-)
+
+diff --git a/drivers/clocksource/tcb_clksrc.c b/drivers/clocksource/tcb_clksrc.c
+index 43f4d5c4d6fa..de6baf564dfe 100644
+--- a/drivers/clocksource/tcb_clksrc.c
++++ b/drivers/clocksource/tcb_clksrc.c
+@@ -126,6 +126,7 @@ static struct clocksource clksrc = {
+ struct tc_clkevt_device {
+ 	struct clock_event_device	clkevt;
+ 	struct clk			*clk;
++	bool				clk_enabled;
+ 	void __iomem			*regs;
+ };
+ 
+@@ -143,6 +144,24 @@ static struct tc_clkevt_device *to_tc_clkevt(struct clock_event_device *clkevt)
+  */
+ static u32 timer_clock;
+ 
++static void tc_clk_disable(struct clock_event_device *d)
++{
++	struct tc_clkevt_device *tcd = to_tc_clkevt(d);
++
++	clk_disable(tcd->clk);
++	tcd->clk_enabled = false;
++}
++
++static void tc_clk_enable(struct clock_event_device *d)
++{
++	struct tc_clkevt_device *tcd = to_tc_clkevt(d);
++
++	if (tcd->clk_enabled)
++		return;
++	clk_enable(tcd->clk);
++	tcd->clk_enabled = true;
++}
++
+ static int tc_shutdown(struct clock_event_device *d)
+ {
+ 	struct tc_clkevt_device *tcd = to_tc_clkevt(d);
+@@ -150,8 +169,14 @@ static int tc_shutdown(struct clock_event_device *d)
+ 
+ 	writel(0xff, regs + ATMEL_TC_REG(2, IDR));
+ 	writel(ATMEL_TC_CLKDIS, regs + ATMEL_TC_REG(2, CCR));
++	return 0;
++}
++
++static int tc_shutdown_clk_off(struct clock_event_device *d)
++{
++	tc_shutdown(d);
+ 	if (!clockevent_state_detached(d))
+-		clk_disable(tcd->clk);
++		tc_clk_disable(d);
+ 
+ 	return 0;
+ }
+@@ -164,7 +189,7 @@ static int tc_set_oneshot(struct clock_event_device *d)
+ 	if (clockevent_state_oneshot(d) || clockevent_state_periodic(d))
+ 		tc_shutdown(d);
+ 
+-	clk_enable(tcd->clk);
++	tc_clk_enable(d);
+ 
+ 	/* slow clock, count up to RC, then irq and stop */
+ 	writel(timer_clock | ATMEL_TC_CPCSTOP | ATMEL_TC_WAVE |
+@@ -186,7 +211,7 @@ static int tc_set_periodic(struct clock_event_device *d)
+ 	/* By not making the gentime core emulate periodic mode on top
+ 	 * of oneshot, we get lower overhead and improved accuracy.
+ 	 */
+-	clk_enable(tcd->clk);
++	tc_clk_enable(d);
+ 
+ 	/* slow clock, count up to RC, then irq and restart */
+ 	writel(timer_clock | ATMEL_TC_WAVE | ATMEL_TC_WAVESEL_UP_AUTO,
+@@ -220,7 +245,7 @@ static struct tc_clkevt_device clkevt = {
+ 		/* Should be lower than at91rm9200's system timer */
+ 		.rating			= 125,
+ 		.set_next_event		= tc_next_event,
+-		.set_state_shutdown	= tc_shutdown,
++		.set_state_shutdown	= tc_shutdown_clk_off,
+ 		.set_state_periodic	= tc_set_periodic,
+ 		.set_state_oneshot	= tc_set_oneshot,
+ 	},
+-- 
+2.36.1
+