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-rw-r--r--debian/patches-rt/0016-serial-pch-Don-t-initialize-uart_port-s-spin_lock.patch28
1 files changed, 28 insertions, 0 deletions
diff --git a/debian/patches-rt/0016-serial-pch-Don-t-initialize-uart_port-s-spin_lock.patch b/debian/patches-rt/0016-serial-pch-Don-t-initialize-uart_port-s-spin_lock.patch
new file mode 100644
index 000000000..4acdbb831
--- /dev/null
+++ b/debian/patches-rt/0016-serial-pch-Don-t-initialize-uart_port-s-spin_lock.patch
@@ -0,0 +1,28 @@
+From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
+Date: Fri, 1 Mar 2024 22:45:29 +0100
+Subject: [PATCH 16/18] serial: pch: Don't initialize uart_port's spin_lock.
+Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/6.8/older/patches-6.8.2-rt11.tar.xz
+
+There is no need to directly initialize the spinlock_t in struct
+uart_port. The structure is later passed to uart_add_one_port() which
+initialize the complete struct including the lock member.
+
+Remove spin_lock_init() on uart_port's internal lock.
+
+Link: https://lore.kernel.org/r/20240301215246.891055-17-bigeasy@linutronix.de
+Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
+---
+ drivers/tty/serial/pch_uart.c | 2 --
+ 1 file changed, 2 deletions(-)
+
+--- a/drivers/tty/serial/pch_uart.c
++++ b/drivers/tty/serial/pch_uart.c
+@@ -1725,8 +1725,6 @@ static struct eg20t_port *pch_uart_init_
+ KBUILD_MODNAME ":" PCH_UART_DRIVER_DEVICE "%d",
+ priv->port.line);
+
+- spin_lock_init(&priv->port.lock);
+-
+ pci_set_drvdata(pdev, priv);
+ priv->trigger_level = 1;
+ priv->fcr = 0;