diff options
| author | Smita Koralahalli <Smita.KoralahalliChannabasappa@amd.com> | 2026-03-22 19:53:35 +0000 |
|---|---|---|
| committer | Dave Jiang <dave.jiang@intel.com> | 2026-03-27 10:15:28 -0700 |
| commit | 116be1e112cbcb664887e44b74f27316a5fef861 (patch) | |
| tree | 4b31a69131a823b83aa015065ebe16a075d9735d /drivers | |
| parent | 14f2e2ebf31157a873536a7212502bd955b69647 (diff) | |
dax/hmem: Factor HMEM registration into __hmem_register_device()
Separate the CXL overlap check from the HMEM registration path and keep
the platform-device setup in a dedicated __hmem_register_device().
This makes hmem_register_device() the policy entry point for deciding
whether a range should be deferred to CXL, while __hmem_register_device()
handles the HMEM registration flow.
No functional changes.
Signed-off-by: Smita Koralahalli <Smita.KoralahalliChannabasappa@amd.com>
Reviewed-by: Jonathan Cameron <jonathan.cameron@huawei.com>
Reviewed-by: Dave Jiang <dave.jiang@intel.com>
Link: https://patch.msgid.link/20260322195343.206900-3-Smita.KoralahalliChannabasappa@amd.com
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: Dave Jiang <dave.jiang@intel.com>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/dax/hmem/hmem.c | 24 |
1 files changed, 15 insertions, 9 deletions
diff --git a/drivers/dax/hmem/hmem.c b/drivers/dax/hmem/hmem.c index 1cf7c2a0ee1c..a3d45032355c 100644 --- a/drivers/dax/hmem/hmem.c +++ b/drivers/dax/hmem/hmem.c @@ -58,21 +58,14 @@ static void release_hmem(void *pdev) platform_device_unregister(pdev); } -static int hmem_register_device(struct device *host, int target_nid, - const struct resource *res) +static int __hmem_register_device(struct device *host, int target_nid, + const struct resource *res) { struct platform_device *pdev; struct memregion_info info; long id; int rc; - if (IS_ENABLED(CONFIG_CXL_REGION) && - region_intersects(res->start, resource_size(res), IORESOURCE_MEM, - IORES_DESC_CXL) != REGION_DISJOINT) { - dev_dbg(host, "deferring range to CXL: %pr\n", res); - return 0; - } - rc = region_intersects_soft_reserve(res->start, resource_size(res)); if (rc != REGION_INTERSECTS) return 0; @@ -123,6 +116,19 @@ out_put: return rc; } +static int hmem_register_device(struct device *host, int target_nid, + const struct resource *res) +{ + if (IS_ENABLED(CONFIG_CXL_REGION) && + region_intersects(res->start, resource_size(res), IORESOURCE_MEM, + IORES_DESC_CXL) != REGION_DISJOINT) { + dev_dbg(host, "deferring range to CXL: %pr\n", res); + return 0; + } + + return __hmem_register_device(host, target_nid, res); +} + static int dax_hmem_platform_probe(struct platform_device *pdev) { return walk_hmem_resources(&pdev->dev, hmem_register_device); |