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fbe543b412
mpc52xx_uart_int and __uart_put_char both try to acquire the port->lock. Therefore the function sequence of: mpc52xx_uart_int--> ...-->flush_to_ldisc-->...-->__uart_put_char can potentially trigger a deadlock. To avoid this deadlock a fix similar to that found in the 8250.c serial driver is applied. The deadlock is avoided by releasing the lock before pushing a buffer and reacquiring it when completed. Signed-off-by: Andrew Liu <shengping.liu@windriver.com> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
1467 lines
38 KiB
1467 lines
38 KiB