Am 01.02.24 um 13:05 schrieb Jiri Slaby:
On 01. 02. 24, 11:55, Jiri Slaby (SUSE) wrote:Emil reports: After updating Linux on an i.MX28 board, serial communication over AUART broke. When I TX from the board and measure on the TX pin, it seems like the HW fifo is not emptied before the transmission is stopped. MXS performs weird things with stop_tx(). The driver makes it conditional on uart_tx_stopped(). So the driver needs special handling. Pass the brand new UART_TX_NOSTOP to uart_port_tx_flags() and handle the stop on its own. Signed-off-by: Jiri Slaby (SUSE) <jirislaby@xxxxxxxxxx> Reported-by: Emil Kronborg <emil.kronborg@xxxxxxxxxxxxxx> Fixes: 2d141e683e9a ("tty: serial: use uart_port_tx() helper") Closes: https://lore.kernel.org/all/miwgbnvy3hjpnricubg76ytpn7xoceehwahupy25bubbduu23s@om2lptpa26xw/
Tested-by: Stefan Wahren <wahrenst@xxxxxxx> Thanks
