4.9-stable review patch. If anyone has any objections, please let me know.
------------------ From: Pan Bian <bianpan2...@163.com> commit 5b11ebedd6a8bb4271b796e498cd15c0fe1133b6 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 <bianpan2...@163.com> Fixes: a580982f0836e Acked-by: Chanwoo Choi <cw00.c...@samsung.com> Signed-off-by: Greg Kroah-Hartman <gre...@linuxfoundation.org> --- drivers/extcon/extcon.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/drivers/extcon/extcon.c +++ b/drivers/extcon/extcon.c @@ -453,7 +453,7 @@ int extcon_sync(struct extcon_dev *edev, dev_err(&edev->dev, "out of memory in extcon_set_state\n"); kobject_uevent(&edev->dev.kobj, KOBJ_CHANGE); - return 0; + return -ENOMEM; } length = name_show(&edev->dev, NULL, prop_buf);
