diff mbox series

[v6,08/12] cxl: Set cxlmd->endpoint before adding port device

Message ID 20240220231402.3156281-9-dave.jiang@intel.com (mailing list archive)
State Handled Elsewhere, archived
Headers show
Series cxl: Add support to report region access coordinates to numa nodes | expand

Commit Message

Dave Jiang Feb. 20, 2024, 11:12 p.m. UTC 
Move setting of cxlmd->endpoint to before calling add_device() on the port
device. Otherwise when referencing cxlmd->endpoint in region discovery code
that is triggered by the port driver probe function, the endpoint port
pointer is not valid.

Current code does not hit this issue yet since cxlmd->endpoint is not being
referenced during region discovery. However follow on code that does
performance calculations will.

Tested-by: Wonjae Lee <wj28.lee@samsung.com>
Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Signed-off-by: Dave Jiang <dave.jiang@intel.com>
---
 drivers/cxl/core/port.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
diff mbox series

Patch

diff --git a/drivers/cxl/core/port.c b/drivers/cxl/core/port.c
index b2a2f6c34886..9ab542e7af65 100644
--- a/drivers/cxl/core/port.c
+++ b/drivers/cxl/core/port.c
@@ -822,6 +822,7 @@  static struct cxl_port *__devm_cxl_add_port(struct device *host,
 		 */
 		port->reg_map = cxlds->reg_map;
 		port->reg_map.host = &port->dev;
+		cxlmd->endpoint = port;
 	} else if (parent_dport) {
 		rc = dev_set_name(dev, "port%d", port->id);
 		if (rc)
@@ -1374,7 +1375,6 @@  int cxl_endpoint_autoremove(struct cxl_memdev *cxlmd, struct cxl_port *endpoint)
 
 	get_device(host);
 	get_device(&endpoint->dev);
-	cxlmd->endpoint = endpoint;
 	cxlmd->depth = endpoint->depth;
 	return devm_add_action_or_reset(dev, delete_endpoint, cxlmd);
 }