diff options
Diffstat (limited to 'debian/patches-rt/0167-rt-Improve-the-serial-console-PASS_LIMIT.patch')
| -rw-r--r-- | debian/patches-rt/0167-rt-Improve-the-serial-console-PASS_LIMIT.patch | 47 |
1 files changed, 47 insertions, 0 deletions
diff --git a/debian/patches-rt/0167-rt-Improve-the-serial-console-PASS_LIMIT.patch b/debian/patches-rt/0167-rt-Improve-the-serial-console-PASS_LIMIT.patch new file mode 100644 index 000000000..aa552dbab --- /dev/null +++ b/debian/patches-rt/0167-rt-Improve-the-serial-console-PASS_LIMIT.patch @@ -0,0 +1,47 @@ +From 2ca7e055b4220689e58ff53c7e64caf5e8eadb37 Mon Sep 17 00:00:00 2001 +From: Ingo Molnar <mingo@elte.hu> +Date: Wed, 14 Dec 2011 13:05:54 +0100 +Subject: [PATCH 167/347] rt: Improve the serial console PASS_LIMIT +MIME-Version: 1.0 +Content-Type: text/plain; charset=UTF-8 +Content-Transfer-Encoding: 8bit +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.246-rt110.tar.xz + +Beyond the warning: + + drivers/tty/serial/8250/8250.c:1613:6: warning: unused variable ‘pass_counter’ [-Wunused-variable] + +the solution of just looping infinitely was ugly - up it to 1 million to +give it a chance to continue in some really ugly situation. + +Signed-off-by: Ingo Molnar <mingo@elte.hu> +Signed-off-by: Thomas Gleixner <tglx@linutronix.de> +--- + drivers/tty/serial/8250/8250_core.c | 11 ++++++++++- + 1 file changed, 10 insertions(+), 1 deletion(-) + +diff --git a/drivers/tty/serial/8250/8250_core.c b/drivers/tty/serial/8250/8250_core.c +index d2df7d71d666..57fd29b2ddf5 100644 +--- a/drivers/tty/serial/8250/8250_core.c ++++ b/drivers/tty/serial/8250/8250_core.c +@@ -54,7 +54,16 @@ static struct uart_driver serial8250_reg; + + static unsigned int skip_txen_test; /* force skip of txen test at init time */ + +-#define PASS_LIMIT 512 ++/* ++ * On -rt we can have a more delays, and legitimately ++ * so - so don't drop work spuriously and spam the ++ * syslog: ++ */ ++#ifdef CONFIG_PREEMPT_RT_FULL ++# define PASS_LIMIT 1000000 ++#else ++# define PASS_LIMIT 512 ++#endif + + #include <asm/serial.h> + /* +-- +2.36.1 + |