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| author | Álvaro Fernández Rojas <noltari@gmail.com> | 2016-04-07 21:25:10 +0200 |
|---|---|---|
| committer | Álvaro Fernández Rojas <noltari@gmail.com> | 2016-04-07 21:25:10 +0200 |
| commit | a8d4d71c41ff0158c2026cac5981e39702167da9 (patch) | |
| tree | 0c54ec3eb59f5bab6aa7318d14c92ff875412202 /target/linux/brcm2708/patches-4.4/0203-serial-Take-care-starting-a-hung-up-tty-s-port.patch | |
| parent | 59e0e88c22007fd77ee9c6c8e02a689889a5f597 (diff) | |
| download | master-31e0f0ae-a8d4d71c41ff0158c2026cac5981e39702167da9.tar.gz master-31e0f0ae-a8d4d71c41ff0158c2026cac5981e39702167da9.tar.bz2 master-31e0f0ae-a8d4d71c41ff0158c2026cac5981e39702167da9.zip | |
brcm2708: update to latest version
As usual these patches were extracted from the raspberry pi repo:
https://github.com/raspberrypi/linux/commits/rpi-4.4.y
Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
Diffstat (limited to 'target/linux/brcm2708/patches-4.4/0203-serial-Take-care-starting-a-hung-up-tty-s-port.patch')
| -rw-r--r-- | target/linux/brcm2708/patches-4.4/0203-serial-Take-care-starting-a-hung-up-tty-s-port.patch | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/target/linux/brcm2708/patches-4.4/0203-serial-Take-care-starting-a-hung-up-tty-s-port.patch b/target/linux/brcm2708/patches-4.4/0203-serial-Take-care-starting-a-hung-up-tty-s-port.patch new file mode 100644 index 0000000000..5ab6d2e509 --- /dev/null +++ b/target/linux/brcm2708/patches-4.4/0203-serial-Take-care-starting-a-hung-up-tty-s-port.patch @@ -0,0 +1,28 @@ +From c9276ae7cfecbd1df477ff31116682e72dd6d8f7 Mon Sep 17 00:00:00 2001 +From: Phil Elwell <phil@raspberrypi.org> +Date: Wed, 9 Mar 2016 13:28:24 +0000 +Subject: [PATCH 203/232] serial: Take care starting a hung-up tty's port + +tty_port_hangup sets a port's tty field to NULL (holding the port lock), +but uart_tx_stopped, called from __uart_start (with the port lock), +uses the tty field without checking for NULL. + +Change uart_tx_stopped to treat a NULL tty field as another stopped +indication. + +Signed-off-by: Phil Elwell <phil@raspberrypi.org> +--- + include/linux/serial_core.h | 2 +- + 1 file changed, 1 insertion(+), 1 deletion(-) + +--- a/include/linux/serial_core.h ++++ b/include/linux/serial_core.h +@@ -397,7 +397,7 @@ int uart_resume_port(struct uart_driver + static inline int uart_tx_stopped(struct uart_port *port) + { + struct tty_struct *tty = port->state->port.tty; +- if (tty->stopped || port->hw_stopped) ++ if (!tty || tty->stopped || port->hw_stopped) + return 1; + return 0; + } |