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cxl_find_regblock_instance() counts the number of instances of a register block as a side effect of searching through all available register blocks. cxl_count_regblock() throws away that work and recounts all the register blocks by asking cxl_find_regblock_instance() to redo work it has already done until it finally returns an error, that is needlessly wasteful. Let cxl_count_regblock() leverage the counting that cxl_find_regblock_instance() already does by passing in a sentinel value (CXL_INSTANCES_COUNT) that triggers the count to be returned. [ davej: Updated to more concise commit log supplied by djbw ] [ davej: Fix up checkpatch formatting warnings ] Signed-off-by: Huaisheng Ye <huaisheng.ye@intel.com> Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> Reviewed-by: Dan Williams <dan.j.williams@intel.com> Link: https://patch.msgid.link/20250115152600.26482-2-huaisheng.ye@intel.com Signed-off-by: Dave Jiang <dave.jiang@intel.com>