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i2c: core: fix use after free in of_i2c_notify
[ Upstream commita4c2fec16f
] We can't use "adap->dev" after it has been freed. Fixes:5bf4fa7dae
("i2c: break out OF support into separate file") Signed-off-by: Wen Yang <wenyang@linux.alibaba.com> Signed-off-by: Wolfram Sang <wsa@the-dreams.de> Signed-off-by: Sasha Levin <sashal@kernel.org>
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1 changed files with 2 additions and 2 deletions
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@ -238,14 +238,14 @@ static int of_i2c_notify(struct notifier_block *nb, unsigned long action,
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}
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client = of_i2c_register_device(adap, rd->dn);
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put_device(&adap->dev);
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if (IS_ERR(client)) {
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dev_err(&adap->dev, "failed to create client for '%pOF'\n",
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rd->dn);
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put_device(&adap->dev);
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of_node_clear_flag(rd->dn, OF_POPULATED);
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return notifier_from_errno(PTR_ERR(client));
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}
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put_device(&adap->dev);
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break;
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case OF_RECONFIG_CHANGE_REMOVE:
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/* already depopulated? */
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