Commit e279e6d9 authored by Thomas Bogendoerfer's avatar Thomas Bogendoerfer Committed by Greg Kroah-Hartman

Fix serial console on SNI RM400 machines

sccnxp driver doesn't get the correct uart clock rate, if CONFIG_HAVE_CLOCK
is disabled. Correct usage of clk API to make it work with/without it.

Fixes: 90efa75f (serial: sccnxp: Using CLK API for getting UART clock)
Suggested-by: default avatarRussell King - ARM Linux <linux@armlinux.org.uk>
Signed-off-by: default avatarThomas Bogendoerfer <tsbogend@alpha.franken.de>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 8a8dabf2
...@@ -884,14 +884,19 @@ static int sccnxp_probe(struct platform_device *pdev) ...@@ -884,14 +884,19 @@ static int sccnxp_probe(struct platform_device *pdev)
clk = devm_clk_get(&pdev->dev, NULL); clk = devm_clk_get(&pdev->dev, NULL);
if (IS_ERR(clk)) { if (IS_ERR(clk)) {
if (PTR_ERR(clk) == -EPROBE_DEFER) { ret = PTR_ERR(clk);
ret = -EPROBE_DEFER; if (ret == -EPROBE_DEFER)
goto err_out; goto err_out;
uartclk = 0;
} else {
clk_prepare_enable(clk);
uartclk = clk_get_rate(clk);
} }
if (!uartclk) {
dev_notice(&pdev->dev, "Using default clock frequency\n"); dev_notice(&pdev->dev, "Using default clock frequency\n");
uartclk = s->chip->freq_std; uartclk = s->chip->freq_std;
} else }
uartclk = clk_get_rate(clk);
/* Check input frequency */ /* Check input frequency */
if ((uartclk < s->chip->freq_min) || (uartclk > s->chip->freq_max)) { if ((uartclk < s->chip->freq_min) || (uartclk > s->chip->freq_max)) {
......
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