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5072c17491
[ Upstream commitd14402a38c] The qmp_usb_iomap() helper function currently returns the raw result of devm_ioremap() for non-exclusive mappings. Since devm_ioremap() may return a NULL pointer and the caller only checks error pointers with IS_ERR(), NULL could bypass the check and lead to an invalid dereference. Fix the issue by checking if devm_ioremap() returns NULL. When it does, qmp_usb_iomap() now returns an error pointer via IOMEM_ERR_PTR(-ENOMEM), ensuring safe and consistent error handling. Signed-off-by: Chenyuan Yang <chenyuan0y@gmail.com> Fixes:a5d6b1ac56("phy: qcom-qmp-usb: fix memleak on probe deferral") CC: Johan Hovold <johan@kernel.org> CC: Krzysztof Kozlowski <krzk@kernel.org> Reviewed-by: Johan Hovold <johan+linaro@kernel.org> Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com> Link: https://lore.kernel.org/r/20250414125050.2118619-1-chenyuan0y@gmail.com Signed-off-by: Vinod Koul <vkoul@kernel.org> Signed-off-by: Sasha Levin <sashal@kernel.org>