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cxl/hdm: Fix potential infinite loop in __cxl_dpa_reserve()

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In __cxl_dpa_reserve(), it will check if the new resource range is
included in one of paritions of the cxl memory device.
cxlds->nr_paritions is used to represent how many partitions information
the cxl memory device has. In the loop, if driver cannot find a
partition including the new resource range, it will be an infinite loop.

[ dj: Removed incorrect fixes tag ]

Fixes: 991d98f17d ("cxl: Make cxl_dpa_alloc() DPA partition number agnostic")
Signed-off-by: Li Ming <ming.li@zohomail.com>
Reviewed-by: Ira Weiny <ira.weiny@intel.com>
Reviewed-by: Dave Jiang <dave.jiang@intel.com>
Link: https://patch.msgid.link/20260112120526.530232-1-ming.li@zohomail.com
Signed-off-by: Dave Jiang <dave.jiang@intel.com>
This commit is contained in:
Li Ming 2026-01-12 20:05:26 +08:00 committed by Dave Jiang
parent 49d1063479
commit d4026a4462
1 changed files with 1 additions and 1 deletions
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2
drivers/cxl/core/hdm.c
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@ -403,7 +403,7 @@ static int __cxl_dpa_reserve(struct cxl_endpoint_decoder *cxled,
* is not set.
*/
if (cxled->part < 0)
for (int i = 0; cxlds->nr_partitions; i++)
for (int i = 0; i < cxlds->nr_partitions; i++)
if (resource_contains(&cxlds->part[i].res, res)) {
cxled->part = i;
break;