printk: nbcon: move locked_port flag to struct uart_port - Githubissues

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Linux kernel source for NI Linux Real-Time

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printk: nbcon: move locked_port flag to struct uart_port #147

Closed gratian closed 7 months ago

gratian commented 7 months ago

Console pointer in uart_port might be shared among multiple uart ports. Flag port locked by nbcon should be saved in uart_port structure instead of in console structure.

Fixes: 6424f396c49e ("printk: nbcon: Implement processing in port->lock wrapper") Suggested-by: John Ogness john.ogness@linutronix.de Signed-off-by: Junxiao Chang junxiao.chang@intel.com Signed-off-by: Sebastian Andrzej Siewior bigeasy@linutronix.de Link: https://lore.kernel.org/all/20240123054033.183114-2-junxiao.chang@intel.com (cherry picked from commit d4fb86a96cb4a1efd24ca13a2ac234a1c9a3fdc5) Signed-off-by: Gratian Crisan gratian.crisan@ni.com

gratian commented 7 months ago

Fixes

Testing

[x] manually re-built kernel
[x] installed on target and re-versioned NI modules via dkms autoinstall
[x] validated it fixes the kernel panic observed in AB#2646784