netdev - [PATCH v4 09/26] sfc: request cxl ram resource

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Message-ID: <20241017165225.21206-10-alejandro.lucero-palau@amd.com>
Date: Thu, 17 Oct 2024 17:52:08 +0100
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>
CC: Alejandro Lucero <alucerop@....com>
Subject: [PATCH v4 09/26] 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 749aa97683fd..d47f8e91eaef 100644
--- a/drivers/net/ethernet/sfc/efx_cxl.c
+++ b/drivers/net/ethernet/sfc/efx_cxl.c
@@ -83,6 +83,12 @@ int efx_cxl_init(struct efx_nic *efx)
 		goto err2;
 	}
 
+	rc = cxl_request_resource(cxl->cxlds, CXL_RES_RAM);
+	if (rc) {
+		pci_err(pci_dev, "CXL request resource failed");
+		goto err2;
+	}
+
 	efx->cxl = cxl;
 #endif
 
@@ -102,6 +108,7 @@ void efx_cxl_exit(struct efx_nic *efx)
 {
 #if IS_ENABLED(CONFIG_CXL_BUS)
 	if (efx->cxl) {
+		cxl_release_resource(efx->cxl->cxlds, CXL_RES_RAM);
 		kfree(efx->cxl->cxlds);
 		kfree(efx->cxl);
 	}
-- 
2.17.1