[PATCH v2] cpufreq: apple-soc: Calculate frequency as a 64-bit value

[Sasha Finkelstein <k@chaosmail.tech>]

The current frequency calculation is done in 32 bit, causing problems
if run on a future SoC that can boost higher than 4.2GHz. Ideally, we
should use a true u64 instead of unsigned long and "knowning" that this
only runs on 64 bit machines, but the core code uses ulong everywhere,
so this should be good enough.

Signed-off-by: Sasha Finkelstein <k@chaosmail.tech>
---
Changes in v2:
- Minor style fixes
- Link to v1: https://patch.msgid.link/20260703-cpufreq-64-v1-1-c406c705319a@chaosmail.tech
---
 drivers/cpufreq/apple-soc-cpufreq.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/cpufreq/apple-soc-cpufreq.c b/drivers/cpufreq/apple-soc-cpufreq.c
index 638e5bf72185..5ad274a1e6ae 100644
--- a/drivers/cpufreq/apple-soc-cpufreq.c
+++ b/drivers/cpufreq/apple-soc-cpufreq.c
@@ -288,7 +288,7 @@ static int apple_soc_cpufreq_init(struct cpufreq_policy *policy)
 
 	/* Get OPP levels (p-state indexes) and stash them in driver_data */
 	for (i = 0; freq_table[i].frequency != CPUFREQ_TABLE_END; i++) {
-		unsigned long rate = freq_table[i].frequency * 1000 + 999;
+		unsigned long rate = freq_table[i].frequency * 1000UL + 999;
 		struct dev_pm_opp *opp = dev_pm_opp_find_freq_floor(cpu_dev, &rate);
 
 		if (IS_ERR(opp)) {

---
base-commit: 4a50a141f05a8d1737661b19ee22ff8455b94409
change-id: 20260703-cpufreq-64-2a23d7261e09

Best regards,
--  
Sasha Finkelstein <k@chaosmail.tech>