Hi, On Tue, Jan 19, 2021 at 02:29:08PM +0800, Liu Xiang wrote: > When CONFIG_REGULATOR is not set, sunxi_pmx_request() always return > success. Even a group of pins call sunxi_pmx_request(), the refcount > is only 1. This can cause a use-after-free warning in sunxi_pmx_free(). > To solve this problem, go to err path if regulator_get() return NULL > or error. > > Signed-off-by: Liu Xiang <liu.xiang@xxxxxxxxxxxxxx> Is there any drawback to depending on CONFIG_REGULATOR? Given that we need those regulators enabled anyway, I guess we could just select or depends on it Maxime
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