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8eb6110099
[ Upstream commit9582485a65] When called with FWNODE_GRAPH_ENDPOINT_NEXT, the function walks every endpoint under the requested port and, for any endpoint whose ID is greater than or equal to the requested one, may store a fwnode reference in best_ep via fwnode_handle_get(). If a later iteration finds an exact-ID match, the function returns that endpoint directly without dropping the reference held by best_ep, leaking it. Drop the saved candidate before returning the exact-match endpoint. This affects callers that use FWNODE_GRAPH_ENDPOINT_NEXT to ask for the next endpoint with ID >= the requested one (used by a number of media drivers, e.g. imx7/8, sun6i CSI, omap3isp, xilinx-csi2, stm32-csi). Each leak retains a fwnode reference until reboot/unbind. Fixes:0fcc2bdc8a("device property: Add fwnode_graph_get_endpoint_by_id()") Signed-off-by: Stepan Ionichev <sozdayvek@gmail.com> Link: https://patch.msgid.link/20260514171455.27271-1-sozdayvek@gmail.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Sasha Levin <sashal@kernel.org>
1416 lines
43 KiB
1416 lines
43 KiB