Commit 84f8b6e2 authored by Li Ming's avatar Li Ming Committed by Dave Jiang
Browse files

cxl/mem: Do not return error if CONFIG_CXL_MCE unset 



CONFIG_CXL_MCE depends on CONFIG_MEMORY_FAILURE, if
CONFIG_CXL_MCE is not set, devm_cxl_register_mce_notifier() will return
an -EOPNOTSUPP, it will cause cxl_mem_state_create() failure , and then
cxl pci device probing failed. In this case, it should not break cxl pci
device probing.

Add a checking in cxl_mem_state_create() to check if the returned value
of devm_cxl_register_mce_notifier() is -EOPNOTSUPP, if yes, just output
a warning log, do not let cxl_mem_state_create() return an error.

Signed-off-by: default avatarLi Ming <ming.li@zohomail.com>
Reviewed-by: default avatarDave Jiang <dave.jiang@intel.com>
Reviewed-by: default avatarIra Weiny <ira.weiny@intel.com>
Link: https://patch.msgid.link/20250227101848.388595-1-ming.li@zohomail.com


Signed-off-by: default avatarDave Jiang <dave.jiang@intel.com>
parent 763e15d0

drivers/cxl/core/mbox.c

+3 −1
Original line number Diff line number Diff line
@@ -1473,7 +1473,9 @@ struct cxl_memdev_state *cxl_memdev_state_create(struct device *dev) 
	mds->cxlds.type = CXL_DEVTYPE_CLASSMEM;



	rc = devm_cxl_register_mce_notifier(dev, &mds->mce_notifier);

	if (rc)

	if (rc == -EOPNOTSUPP)

		dev_warn(dev, "CXL MCE unsupported\n");

	else if (rc)

		return ERR_PTR(rc);



	return mds;