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[ Upstream commitacd194d9b5] The driver calls ioport_map() to map I/O ports in sim710_probe_common() but never calls ioport_unmap() to release the mapping. This causes resource leaks in both the error path when request_irq() fails and in the normal device removal path via sim710_device_remove(). Add ioport_unmap() calls in the out_release error path and in sim710_device_remove(). Fixes:56fece2008("[PATCH] finally fix 53c700 to use the generic iomem infrastructure") Signed-off-by: Haotian Zhang <vulab@iscas.ac.cn> Link: https://patch.msgid.link/20251029032555.1476-1-vulab@iscas.ac.cn Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com> Signed-off-by: Sasha Levin <sashal@kernel.org>