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dc8a5238e1
dma_request_chan() assumes both @dev and @name are valid, but neither is checked before use. dev is dereferenced immediately via dev_fwnode(), which accesses dev->of_node or dev->fwnode without checking for NULL. Likewise, if name is NULL and the OF/ACPI lookup does not succeed, the legacy filter-map path eventually passes it to strcmp(), resulting in a NULL pointer dereference. These are caller bugs rather than normal lookup failures, so add a WARN_ON() at function entry to catch invalid arguments early during development instead of crashing later. No functional change for valid callers. Signed-off-by: bui duc phuc <phucduc.bui@gmail.com> Reviewed-by: Frank Li <Frank.Li@nxp.com> Link: https://patch.msgid.link/20260716052758.23465-1-phucduc.bui@gmail.com Signed-off-by: Vinod Koul <vkoul@kernel.org>
1645 lines
40 KiB
1645 lines
40 KiB