extcon: return error code on failure
commit5b11ebedd6
upstream. Function get_zeroed_page() returns a NULL pointer if there is no enough memory. In function extcon_sync(), it returns 0 if the call to get_zeroed_page() fails. The return value 0 indicates success in the context, which is incosistent with the execution status. This patch fixes the bug by returning -ENOMEM. Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=188611 Signed-off-by: Pan Bian <bianpan2016@163.com> Fixes:a580982f08
Acked-by: Chanwoo Choi <cw00.choi@samsung.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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@ -453,7 +453,7 @@ int extcon_sync(struct extcon_dev *edev, unsigned int id)
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dev_err(&edev->dev, "out of memory in extcon_set_state\n");
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dev_err(&edev->dev, "out of memory in extcon_set_state\n");
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kobject_uevent(&edev->dev.kobj, KOBJ_CHANGE);
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kobject_uevent(&edev->dev.kobj, KOBJ_CHANGE);
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return 0;
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return -ENOMEM;
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}
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}
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length = name_show(&edev->dev, NULL, prop_buf);
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length = name_show(&edev->dev, NULL, prop_buf);
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