From: Michal Simek <michal.simek@xxxxxxxxxx> commit 91c9dfa25c7f95b543c280e0edf1fd8de6e90985 upstream. This reverts commit 2088cfd882d0403609bdf426e9b24372fe1b8337. As Johan says, this driver needs a lot more work and these changes are only going in the wrong direction: https://lkml.kernel.org/r/20190523091839.GC568@localhost Reported-by: Johan Hovold <johan@xxxxxxxxxx> Signed-off-by: Michal Simek <michal.simek@xxxxxxxxxx> Cc: stable <stable@xxxxxxxxxxxxxxx> Link: https://lore.kernel.org/r/dac3898e3e32d963f357fb436ac9a7ac3cbcf933.1585905873.git.michal.simek@xxxxxxxxxx Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- drivers/tty/serial/xilinx_uartps.c | 6 ++---- 1 file changed, 2 insertions(+), 4 deletions(-) --- a/drivers/tty/serial/xilinx_uartps.c +++ b/drivers/tty/serial/xilinx_uartps.c @@ -1724,8 +1724,7 @@ err_out_unregister_driver: uart_unregister_driver(cdns_uart_data->cdns_uart_driver); err_out_id: mutex_lock(&bitmap_lock); - if (cdns_uart_data->id < MAX_UART_INSTANCES) - clear_bit(cdns_uart_data->id, bitmap); + clear_bit(cdns_uart_data->id, bitmap); mutex_unlock(&bitmap_lock); return rc; } @@ -1750,8 +1749,7 @@ static int cdns_uart_remove(struct platf rc = uart_remove_one_port(cdns_uart_data->cdns_uart_driver, port); port->mapbase = 0; mutex_lock(&bitmap_lock); - if (cdns_uart_data->id < MAX_UART_INSTANCES) - clear_bit(cdns_uart_data->id, bitmap); + clear_bit(cdns_uart_data->id, bitmap); mutex_unlock(&bitmap_lock); clk_disable_unprepare(cdns_uart_data->uartclk); clk_disable_unprepare(cdns_uart_data->pclk);
