Wei Yongjun 677c577e17 phy: usb: sunplus: Fix return value check in update_disc_vol() ... In case of error, the function nvmem_cell_read() returns ERR_PTR() and never returns NULL. The NULL test in the return value check should be replaced with IS_ERR(). Fixes: 99d9ccd973 ("phy: usb: Add USB2.0 phy driver for Sunplus SP7021") Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com> Link: https://lore.kernel.org/r/20220909094709.1790970-1-weiyongjun@huaweicloud.com Signed-off-by: Vinod Koul <vkoul@kernel.org>		2022-09-13 20:58:33 +05:30
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