Commit fbaf2b07 authored by Dan Williams's avatar Dan Williams
Browse files

cxl/mem: Make cxl_dvsec_range() init failure fatal 



In preparation for the cxl_pci driver to continue operation after
cxl_dvsec_range() failure, update cxl_mem to check for negative error
codes in info->ranges. Treat that condition as fatal regardless of the
state of the HDM configuration since cxl_mem needs positive confirmation
that legacy ranges were not established by platform firmware or another
agent.

Reviewed-by: default avatarJonathan Cameron <Jonathan.Cameron@huawei.com.>
Reviewed-by: default avatarBen Widawsky <ben.widawsky@intel.com>
Reviewed-by: default avatarDavidlohr Bueso <dave@stgolabs.net>
Link: https://lore.kernel.org/r/164730735324.3806189.4167509857771192422.stgit@dwillia2-desk3.amr.corp.intel.com


Signed-off-by: default avatarDan Williams <dan.j.williams@intel.com>
parent e39f9be0

drivers/cxl/mem.c

+3 −0
Original line number Diff line number Diff line
@@ -88,6 +88,9 @@ __mock bool cxl_dvsec_decode_init(struct cxl_dev_state *cxlds) 
	void __iomem *crb;

	u32 global_ctrl;



	if (info->ranges < 0)

		return false;



	/* map hdm decoder */

	crb = ioremap(cxlds->component_reg_phys, CXL_COMPONENT_REG_BLOCK_SIZE);

	if (!crb) {