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power: supply: Fix null pointer dereference in smb2_probe

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[ Upstream commit 88f04bc3e737155e13caddf0ba8ed19db87f0212 ]

devm_kasprintf and devm_kzalloc return a pointer to dynamically
allocated memory which can be NULL upon failure.

Fixes: 8648aeb5d7 ("power: supply: add Qualcomm PMI8998 SMB2 Charger driver")
Signed-off-by: Kunwu Chan <chentao@kylinos.cn>
Link: https://lore.kernel.org/r/20231124075021.1335289-1-chentao@kylinos.cn
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Kunwu Chan 2023-11-24 15:50:21 +08:00 • committed by Greg Kroah-Hartman
parent 98b8a550da
commit e2717302fb
1 changed files with 4 additions and 0 deletions
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4
drivers/power/supply/qcom_pmi8998_charger.c
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@ -973,10 +973,14 @@ static int smb2_probe(struct platform_device *pdev)
supply_config.of_node = pdev->dev.of_node;
desc = devm_kzalloc(chip->dev, sizeof(smb2_psy_desc), GFP_KERNEL);
if (!desc)
return -ENOMEM;
memcpy(desc, &smb2_psy_desc, sizeof(smb2_psy_desc));
desc->name =
devm_kasprintf(chip->dev, GFP_KERNEL, "%s-charger",
(const char *)device_get_match_data(chip->dev));
if (!desc->name)
return -ENOMEM;
chip->chg_psy =
devm_power_supply_register(chip->dev, desc, &supply_config);