linux-kernel - [PATCH] soc: ti: ti_sci_pm_domains: check for proper args count in xlate

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Date:   Wed, 28 Oct 2020 16:17:00 +0200
From:   Tero Kristo <t-kristo@...com>
To:     <ssantosh@...nel.org>, <nm@...com>, <linux-kernel@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>
Subject: [PATCH] soc: ti: ti_sci_pm_domains: check for proper args count in xlate

K2G devices still only use single parameter for power-domains property,
so check for this properly in the driver. Without this, every peripheral
fails to probe resulting in boot failure.

Fixes: efa5c01cd7ee ("soc: ti: ti_sci_pm_domains: switch to use multiple genpds instead of one")
Reported-by: Nishanth Menon <nm@...com>
Signed-off-by: Tero Kristo <t-kristo@...com>
---
 drivers/soc/ti/ti_sci_pm_domains.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/soc/ti/ti_sci_pm_domains.c b/drivers/soc/ti/ti_sci_pm_domains.c
index af2126d2b2ff..8afb3f45d263 100644
--- a/drivers/soc/ti/ti_sci_pm_domains.c
+++ b/drivers/soc/ti/ti_sci_pm_domains.c
@@ -91,7 +91,7 @@ static struct generic_pm_domain *ti_sci_pd_xlate(
 	struct genpd_onecell_data *genpd_data = data;
 	unsigned int idx = genpdspec->args[0];
 
-	if (genpdspec->args_count < 2)
+	if (genpdspec->args_count != 1 && genpdspec->args_count != 2)
 		return ERR_PTR(-EINVAL);
 
 	if (idx >= genpd_data->num_domains) {
-- 
2.17.1

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