From 1b267d3510d8ee9ab46ec4101ee481cda310cf8b Mon Sep 17 00:00:00 2001
From: Eugene Syromiatnikov <esyr@redhat.com>
Date: Thu, 27 Aug 2020 19:15:44 +0200
Subject: [PATCH 6/6] Revert "[netdrv] ice: add a devlink region for dumping
 NVM contents"

This reverts commit 14d67603e80fde05381c96562be7f191d568237f.
---
 drivers/net/ethernet/intel/ice/ice.h         |  2 -
 drivers/net/ethernet/intel/ice/ice_devlink.c | 96 ----------------------------
 drivers/net/ethernet/intel/ice/ice_devlink.h |  3 -
 drivers/net/ethernet/intel/ice/ice_main.c    |  4 --
 4 files changed, 105 deletions(-)

diff --git a/drivers/net/ethernet/intel/ice/ice.h b/drivers/net/ethernet/intel/ice/ice.h
index 5792ee616b5c..54b9d567841e 100644
--- a/drivers/net/ethernet/intel/ice/ice.h
+++ b/drivers/net/ethernet/intel/ice/ice.h
@@ -373,8 +373,6 @@ struct ice_pf {
 	/* devlink port data */
 	struct devlink_port devlink_port;
 
-	struct devlink_region *nvm_region;
-
 	/* OS reserved IRQ details */
 	struct msix_entry *msix_entries;
 	struct ice_res_tracker *irq_tracker;
diff --git a/drivers/net/ethernet/intel/ice/ice_devlink.c b/drivers/net/ethernet/intel/ice/ice_devlink.c
index a73d06e06b5d..fafec5c6b407 100644
--- a/drivers/net/ethernet/intel/ice/ice_devlink.c
+++ b/drivers/net/ethernet/intel/ice/ice_devlink.c
@@ -341,99 +341,3 @@ void ice_devlink_destroy_port(struct ice_pf *pf)
 	devlink_port_type_clear(&pf->devlink_port);
 	devlink_port_unregister(&pf->devlink_port);
 }
-
-/**
- * ice_devlink_nvm_snapshot - Capture a snapshot of the Shadow RAM contents
- * @devlink: the devlink instance
- * @extack: extended ACK response structure
- * @data: on exit points to snapshot data buffer
- *
- * This function is called in response to the DEVLINK_CMD_REGION_TRIGGER for
- * the shadow-ram devlink region. It captures a snapshot of the shadow ram
- * contents. This snapshot can later be viewed via the devlink-region
- * interface.
- *
- * @returns zero on success, and updates the data pointer. Returns a non-zero
- * error code on failure.
- */
-static int ice_devlink_nvm_snapshot(struct devlink *devlink,
-				    struct netlink_ext_ack *extack, u8 **data)
-{
-	struct ice_pf *pf = devlink_priv(devlink);
-	struct device *dev = ice_pf_to_dev(pf);
-	struct ice_hw *hw = &pf->hw;
-	enum ice_status status;
-	void *nvm_data;
-	u32 nvm_size;
-
-	nvm_size = hw->nvm.flash_size;
-	nvm_data = vzalloc(nvm_size);
-	if (!nvm_data)
-		return -ENOMEM;
-
-	status = ice_acquire_nvm(hw, ICE_RES_READ);
-	if (status) {
-		dev_dbg(dev, "ice_acquire_nvm failed, err %d aq_err %d\n",
-			status, hw->adminq.sq_last_status);
-		NL_SET_ERR_MSG_MOD(extack, "Failed to acquire NVM semaphore");
-		vfree(nvm_data);
-		return -EIO;
-	}
-
-	status = ice_read_flat_nvm(hw, 0, &nvm_size, nvm_data, false);
-	if (status) {
-		dev_dbg(dev, "ice_read_flat_nvm failed after reading %u bytes, err %d aq_err %d\n",
-			nvm_size, status, hw->adminq.sq_last_status);
-		NL_SET_ERR_MSG_MOD(extack, "Failed to read NVM contents");
-		ice_release_nvm(hw);
-		vfree(nvm_data);
-		return -EIO;
-	}
-
-	ice_release_nvm(hw);
-
-	*data = nvm_data;
-
-	return 0;
-}
-
-static const struct devlink_region_ops ice_nvm_region_ops = {
-	.name = "nvm-flash",
-	.destructor = vfree,
-	.snapshot = ice_devlink_nvm_snapshot,
-};
-
-/**
- * ice_devlink_init_regions - Initialize devlink regions
- * @pf: the PF device structure
- *
- * Create devlink regions used to enable access to dump the contents of the
- * flash memory on the device.
- */
-void ice_devlink_init_regions(struct ice_pf *pf)
-{
-	struct devlink *devlink = priv_to_devlink(pf);
-	struct device *dev = ice_pf_to_dev(pf);
-	u64 nvm_size;
-
-	nvm_size = pf->hw.nvm.flash_size;
-	pf->nvm_region = devlink_region_create(devlink, &ice_nvm_region_ops, 1,
-					       nvm_size);
-	if (IS_ERR(pf->nvm_region)) {
-		dev_err(dev, "failed to create NVM devlink region, err %ld\n",
-			PTR_ERR(pf->nvm_region));
-		pf->nvm_region = NULL;
-	}
-}
-
-/**
- * ice_devlink_destroy_regions - Destroy devlink regions
- * @pf: the PF device structure
- *
- * Remove previously created regions for this PF.
- */
-void ice_devlink_destroy_regions(struct ice_pf *pf)
-{
-	if (pf->nvm_region)
-		devlink_region_destroy(pf->nvm_region);
-}
diff --git a/drivers/net/ethernet/intel/ice/ice_devlink.h b/drivers/net/ethernet/intel/ice/ice_devlink.h
index 6e806a08dc23..f94dc93c24c5 100644
--- a/drivers/net/ethernet/intel/ice/ice_devlink.h
+++ b/drivers/net/ethernet/intel/ice/ice_devlink.h
@@ -11,7 +11,4 @@ void ice_devlink_unregister(struct ice_pf *pf);
 int ice_devlink_create_port(struct ice_pf *pf);
 void ice_devlink_destroy_port(struct ice_pf *pf);
 
-void ice_devlink_init_regions(struct ice_pf *pf);
-void ice_devlink_destroy_regions(struct ice_pf *pf);
-
 #endif /* _ICE_DEVLINK_H_ */
diff --git a/drivers/net/ethernet/intel/ice/ice_main.c b/drivers/net/ethernet/intel/ice/ice_main.c
index 2b02506d0840..1deffd909a13 100644
--- a/drivers/net/ethernet/intel/ice/ice_main.c
+++ b/drivers/net/ethernet/intel/ice/ice_main.c
@@ -3391,8 +3391,6 @@ ice_probe(struct pci_dev *pdev, const struct pci_device_id __always_unused *ent)
 		goto err_init_pf_unroll;
 	}
 
-	ice_devlink_init_regions(pf);
-
 	pf->num_alloc_vsi = hw->func_caps.guar_num_vsi;
 	if (!pf->num_alloc_vsi) {
 		err = -EIO;
@@ -3506,7 +3504,6 @@ ice_probe(struct pci_dev *pdev, const struct pci_device_id __always_unused *ent)
 	devm_kfree(dev, pf->vsi);
 err_init_pf_unroll:
 	ice_deinit_pf(pf);
-	ice_devlink_destroy_regions(pf);
 	ice_deinit_hw(hw);
 err_exit_unroll:
 	ice_devlink_unregister(pf);
@@ -3552,7 +3549,6 @@ static void ice_remove(struct pci_dev *pdev)
 		ice_vsi_free_q_vectors(pf->vsi[i]);
 	}
 	ice_deinit_pf(pf);
-	ice_devlink_destroy_regions(pf);
 	ice_deinit_hw(&pf->hw);
 	ice_devlink_unregister(pf);
 
-- 
2.13.6