Searched hist:"2 ff23c48" (Results 1 – 1 of 1) sorted by relevance
| /openbmc/linux/drivers/tty/serial/ |
| H A D | mvebu-uart.c | 2ff23c48 Fri Oct 13 04:01:52 CDT 2017 Allen Yan <yanwei@marvell.com> serial: mvebu-uart: clear state register before IRQ request
When receiving data on RX pin before ->uart_startup() is called, some
error bits in the state register could be set up (like BRK_DET).
This is harmless when using only the standard UART (error bits are
read-only), but may procude an endless loop once in the extended UART
RX interrupt handler (error bits must be cleared).
Clear the status register in ->uart_startup() to avoid this situation.
Signed-off-by: Allen Yan <yanwei@marvell.com>
Signed-off-by: Miquel Raynal <miquel.raynal@free-electrons.com>
Reviewed-by: Gregory CLEMENT <gregory.clement@free-electrons.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2ff23c48 Fri Oct 13 04:01:52 CDT 2017 Allen Yan <yanwei@marvell.com> serial: mvebu-uart: clear state register before IRQ request
When receiving data on RX pin before ->uart_startup() is called, some
error bits in the state register could be set up (like BRK_DET).
This is harmless when using only the standard UART (error bits are
read-only), but may procude an endless loop once in the extended UART
RX interrupt handler (error bits must be cleared).
Clear the status register in ->uart_startup() to avoid this situation.
Signed-off-by: Allen Yan <yanwei@marvell.com>
Signed-off-by: Miquel Raynal <miquel.raynal@free-electrons.com>
Reviewed-by: Gregory CLEMENT <gregory.clement@free-electrons.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
|