From: Jon Hunter jonathanh@nvidia.com
commit cc9ca4d95846cbbece48d9cd385550f8fba6a3c1 upstream.
The Tegra serial driver always prints an error message when enabling the FIFO for devices that have support for checking the FIFO enable status. Fix this by displaying the error message, only when an error occurs.
Finally, update the error message to make it clear that enabling the FIFO failed and display the error code.
Fixes: 222dcdff3405 ("serial: tegra: check for FIFO mode enabled status") Cc: stable@vger.kernel.org Acked-by: Thierry Reding treding@nvidia.com Signed-off-by: Jon Hunter jonathanh@nvidia.com Link: https://lore.kernel.org/r/20210630125643.264264-1-jonathanh@nvidia.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/tty/serial/serial-tegra.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-)
--- a/drivers/tty/serial/serial-tegra.c +++ b/drivers/tty/serial/serial-tegra.c @@ -1045,9 +1045,11 @@ static int tegra_uart_hw_init(struct teg
if (tup->cdata->fifo_mode_enable_status) { ret = tegra_uart_wait_fifo_mode_enabled(tup); - dev_err(tup->uport.dev, "FIFO mode not enabled\n"); - if (ret < 0) + if (ret < 0) { + dev_err(tup->uport.dev, + "Failed to enable FIFO mode: %d\n", ret); return ret; + } } else { /* * For all tegra devices (up to t210), there is a hardware