netdev - [PATCH v6 09/28] sfc: request cxl ram resource

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Message-ID: <20241202171222.62595-10-alejandro.lucero-palau@amd.com>
Date: Mon, 2 Dec 2024 17:12:03 +0000
From: <alejandro.lucero-palau@....com>
To: <linux-cxl@...r.kernel.org>, <netdev@...r.kernel.org>,
	<dan.j.williams@...el.com>, <martin.habets@...inx.com>,
	<edward.cree@....com>, <davem@...emloft.net>, <kuba@...nel.org>,
	<pabeni@...hat.com>, <edumazet@...gle.com>, <dave.jiang@...el.com>
CC: Alejandro Lucero <alucerop@....com>
Subject: [PATCH v6 09/28] sfc: request cxl ram resource

From: Alejandro Lucero <alucerop@....com>

Use cxl accessor for obtaining the ram resource the device advertises.

Signed-off-by: Alejandro Lucero <alucerop@....com>
---
 drivers/net/ethernet/sfc/efx_cxl.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/drivers/net/ethernet/sfc/efx_cxl.c b/drivers/net/ethernet/sfc/efx_cxl.c
index 44e1061feba1..76ce4c2e587b 100644
--- a/drivers/net/ethernet/sfc/efx_cxl.c
+++ b/drivers/net/ethernet/sfc/efx_cxl.c
@@ -84,6 +84,12 @@ int efx_cxl_init(struct efx_probe_data *probe_data)
 		goto err2;
 	}
 
+	rc = cxl_request_resource(cxl->cxlds, CXL_RES_RAM);
+	if (rc) {
+		pci_err(pci_dev, "CXL request resource failed");
+		goto err2;
+	}
+
 	probe_data->cxl = cxl;
 
 	return 0;
@@ -98,6 +104,7 @@ int efx_cxl_init(struct efx_probe_data *probe_data)
 void efx_cxl_exit(struct efx_probe_data *probe_data)
 {
 	if (probe_data->cxl) {
+		cxl_release_resource(probe_data->cxl->cxlds, CXL_RES_RAM);
 		kfree(probe_data->cxl->cxlds);
 		kfree(probe_data->cxl);
 	}
-- 
2.17.1