linux-kernel - [PATCH] power: supply: qcom_battmgr: Recognize "LiP" as lithium-polymer

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Message-ID: <20260117210941.6219-1-val@packett.cool>
Date: Sat, 17 Jan 2026 18:09:24 -0300
From: Val Packett <val@...kett.cool>
To: Sebastian Reichel <sre@...nel.org>,
	Abel Vesa <abelvesa@...nel.org>,
	Dmitry Baryshkov <dmitry.baryshkov@....qualcomm.com>
Cc: Val Packett <val@...kett.cool>,
	Sebastian Reichel <sebastian.reichel@...labora.com>,
	linux-arm-msm@...r.kernel.org,
	linux-pm@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: [PATCH] power: supply: qcom_battmgr: Recognize "LiP" as lithium-polymer

On the Dell Latitude 7455, the firmware uses "LiP" with a lowercase 'i'
for the battery chemistry type, but only all-uppercase "LIP" was being
recognized. Add the CamelCase variant to the check to fix the "Unknown
battery technology" warning.

Fixes: 202ac22b8e2e ("power: supply: qcom_battmgr: Add lithium-polymer entry")
Signed-off-by: Val Packett <val@...kett.cool>
---
 drivers/power/supply/qcom_battmgr.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/power/supply/qcom_battmgr.c b/drivers/power/supply/qcom_battmgr.c
index c8028606bba0..80e701c66434 100644
--- a/drivers/power/supply/qcom_battmgr.c
+++ b/drivers/power/supply/qcom_battmgr.c
@@ -1240,7 +1240,8 @@ static unsigned int qcom_battmgr_sc8280xp_parse_technology(const char *chemistry
 	if ((!strncmp(chemistry, "LIO", BATTMGR_CHEMISTRY_LEN)) ||
 	    (!strncmp(chemistry, "OOI", BATTMGR_CHEMISTRY_LEN)))
 		return POWER_SUPPLY_TECHNOLOGY_LION;
-	if (!strncmp(chemistry, "LIP", BATTMGR_CHEMISTRY_LEN))
+	if (!strncmp(chemistry, "LIP", BATTMGR_CHEMISTRY_LEN) ||
+	    (!strncmp(chemistry, "LiP", BATTMGR_CHEMISTRY_LEN)))
 		return POWER_SUPPLY_TECHNOLOGY_LIPO;
 
 	pr_err("Unknown battery technology '%s'\n", chemistry);
-- 
2.51.2