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cmd: clk: Handle ENODEV from clk_get_rate

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clk_get_rate may return -ENODEV if the clock isn't valid.

Also, make the error cases go through a single path.

Fixes: ff8eee0330 ("cmd: clk: Add trivial implementation of clock dump
	for DM")

Signed-off-by: Ismael Luceno <ismael.luceno@silicon-gears.com>
Reviewed-by: Matthias Brugger <mbrugger@suse.com>
Reviewed-by: Marek Vasut <marek.vasut@gmail.com>
This commit is contained in:
Ismael Luceno Cortes 2019-03-18 12:27:32 +00:00 • committed by Marek Vasut
parent 4862830b69
commit 80b44fb376
1 changed files with 14 additions and 10 deletions
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24
cmd/clk.c
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@ -17,6 +17,7 @@ int __weak soc_clk_dump(void)
struct uclass *uc; struct uclass *uc;
struct clk clk; struct clk clk;
int ret; int ret;
ulong rate;
/* Device addresses start at 1 */ /* Device addresses start at 1 */
ret = uclass_get(UCLASS_CLK, &uc); ret = uclass_get(UCLASS_CLK, &uc);
@ -26,20 +27,23 @@ int __weak soc_clk_dump(void)
uclass_foreach_dev(dev, uc) { uclass_foreach_dev(dev, uc) {
memset(&clk, 0, sizeof(clk)); memset(&clk, 0, sizeof(clk));
ret = device_probe(dev); ret = device_probe(dev);
if (ret) { if (ret)
printf("%-30.30s : ? Hz\n", dev->name); goto noclk;
continue;
}
ret = clk_request(dev, &clk); ret = clk_request(dev, &clk);
if (ret) { if (ret)
printf("%-30.30s : ? Hz\n", dev->name); goto noclk;
continue;
}
printf("%-30.30s : %lu Hz\n", dev->name, clk_get_rate(&clk));
rate = clk_get_rate(&clk);
clk_free(&clk); clk_free(&clk);
if (rate == -ENODEV)
goto noclk;
printf("%-30.30s : %lu Hz\n", dev->name, rate);
continue;
noclk:
printf("%-30.30s : ? Hz\n", dev->name);
} }
return 0; return 0;