cpufreq: ACPI: Replace udelay() with usleep_range()

kaushlen · rafaeljw · commit 1b541e10eea6 · 2025-11-20T21:50:08.000+01:00
Replace udelay() with usleep_range() in check_freqs() to allow CPU scheduling during frequency polling. Signed-off-by: Kaushlendra Kumar <kaushlendra.kumar@intel.com> [ rjw: Changelog edits ] Link: https://patch.msgid.link/20251119031109.134583-1-kaushlendra.kumar@intel.com Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
diff --git a/drivers/cpufreq/acpi-cpufreq.c b/drivers/cpufreq/acpi-cpufreq.c
@@ -395,7 +395,7 @@ static unsigned int check_freqs(struct cpufreq_policy *policy,
 		cur_freq = extract_freq(policy, get_cur_val(mask, data));
 		if (cur_freq == freq)
 			return 1;
-		udelay(10);
+		usleep_range(10, 15);
 	}
 	return 0;
 }

Original file line number	Diff line number	Diff line change
`@@ -395,7 +395,7 @@ static unsigned int check_freqs(struct cpufreq_policy *policy,`
`395`	`395`	`cur_freq = extract_freq(policy, get_cur_val(mask, data));`
`396`	`396`	`if (cur_freq == freq)`
`397`	`397`	`return 1;`
`398`		`- udelay(10);`
	`398`	`+ usleep_range(10, 15);`
`399`	`399`	`}`
`400`	`400`	`return 0;`
`401`	`401`	`}`