5.15-stable review patch. If anyone has any objections, please let me know.
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From: Charles Han hanchunchao@inspur.com
[ Upstream commit d9fa3aae08f99493e67fb79413c0e95d30fca5e9 ]
In the cpcap_usb_detect() function, the power_supply_get_by_name() function may return `NULL` instead of an error pointer. To prevent potential null pointer dereferences, Added a null check.
Fixes: eab4e6d953c1 ("power: supply: cpcap-charger: get the battery inserted infomation from cpcap-battery") Signed-off-by: Charles Han hanchunchao@inspur.com Link: https://lore.kernel.org/r/20250519024741.5846-1-hanchunchao@inspur.com Signed-off-by: Sebastian Reichel sebastian.reichel@collabora.com Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/power/supply/cpcap-charger.c | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-)
diff --git a/drivers/power/supply/cpcap-charger.c b/drivers/power/supply/cpcap-charger.c index 60e0ce105a29..5c9e3784ed47 100644 --- a/drivers/power/supply/cpcap-charger.c +++ b/drivers/power/supply/cpcap-charger.c @@ -689,9 +689,8 @@ static void cpcap_usb_detect(struct work_struct *work) struct power_supply *battery;
battery = power_supply_get_by_name("battery"); - if (IS_ERR_OR_NULL(battery)) { - dev_err(ddata->dev, "battery power_supply not available %li\n", - PTR_ERR(battery)); + if (!battery) { + dev_err(ddata->dev, "battery power_supply not available\n"); return; }