[PATCH 6.6 201/283] power: supply: qcom_battmgr: Recognize "LiP" as lithium-polymer

Sasha Levin
2026-02-28T18:09:57Z

From: Val Packett <val@packett.cool>

[ Upstream commit c655f45480637aee326b5bd96488d35ab90db2b0 ]

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@packett.cool>
Reviewed-by: Konrad Dybcio <konrad.dybcio@oss.qualcomm.com>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>
Link: https://patch.msgid.link/20260120235831.479038-1-val@packett.cool
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
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 0c993780d3ef2..e5eade1328163 100644
--- a/drivers/power/supply/qcom_battmgr.c
+++ b/drivers/power/supply/qcom_battmgr.c
@@ -981,7 +981,8 @@ 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);
--
2.51.0