cxlflash: Use new cxl_pci_read_adapter_vpd() API

To read the adapter VPD, drivers can't rely on pci config APIs, as it
wouldn't work on powerVM. cxl introduced a new kernel API especially
for this, so start using it.

Co-authored-by: Christophe Lombard <clombard@linux.vnet.ibm.com>
Signed-off-by: Frederic Barrat <fbarrat@linux.vnet.ibm.com>
Signed-off-by: Christophe Lombard <clombard@linux.vnet.ibm.com>
Reviewed-by: Uma Krishnan <ukrishn@linux.vnet.ibm.com>
Acked-by: Matthew R. Ochs <mrochs@linux.vnet.ibm.com>
Acked-by: Manoj N. Kumar <manoj@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>

diff --git a/drivers/scsi/cxlflash/common.h b/drivers/scsi/cxlflash/common.h
index 5ada926..580f370 100644 (file)
--- a/drivers/scsi/cxlflash/common.h
+++ b/drivers/scsi/cxlflash/common.h
@@ -106,7 +106,6 @@ struct cxlflash_cfg {
        atomic_t scan_host_needed;
 
        struct cxl_afu *cxl_afu;
-       struct pci_dev *parent_dev;
 
        atomic_t recovery_threads;
        struct mutex ctx_recovery_mutex;

diff --git a/drivers/scsi/cxlflash/main.c b/drivers/scsi/cxlflash/main.c
index f6d90ce..e04aae7 100644 (file)
--- a/drivers/scsi/cxlflash/main.c
+++ b/drivers/scsi/cxlflash/main.c
@@ -1407,7 +1407,7 @@ static int start_context(struct cxlflash_cfg *cfg)
  */
 static int read_vpd(struct cxlflash_cfg *cfg, u64 wwpn[])
 {
-       struct pci_dev *dev = cfg->parent_dev;
+       struct pci_dev *dev = cfg->dev;
        int rc = 0;
        int ro_start, ro_size, i, j, k;
        ssize_t vpd_size;
@@ -1416,7 +1416,7 @@ static int read_vpd(struct cxlflash_cfg *cfg, u64 wwpn[])
        char *wwpn_vpd_tags[NUM_FC_PORTS] = { "V5", "V6" };
 
        /* Get the VPD data from the device */
-       vpd_size = pci_read_vpd(dev, 0, sizeof(vpd_data), vpd_data);
+       vpd_size = cxl_read_adapter_vpd(dev, vpd_data, sizeof(vpd_data));
        if (unlikely(vpd_size <= 0)) {
                dev_err(&dev->dev, "%s: Unable to read VPD (size = %ld)\n",
                       __func__, vpd_size);
@@ -2392,7 +2392,6 @@ static int cxlflash_probe(struct pci_dev *pdev,
 {
        struct Scsi_Host *host;
        struct cxlflash_cfg *cfg = NULL;
-       struct device *phys_dev;
        struct dev_dependent_vals *ddv;
        int rc = 0;
 
@@ -2458,19 +2457,6 @@ static int cxlflash_probe(struct pci_dev *pdev,
 
        pci_set_drvdata(pdev, cfg);
 
-       /*
-        * Use the special service provided to look up the physical
-        * PCI device, since we are called on the probe of the virtual
-        * PCI host bus (vphb)
-        */
-       phys_dev = cxl_get_phys_dev(pdev);
-       if (!dev_is_pci(phys_dev)) {
-               dev_err(&pdev->dev, "%s: not a pci dev\n", __func__);
-               rc = -ENODEV;
-               goto out_remove;
-       }
-       cfg->parent_dev = to_pci_dev(phys_dev);
-
        cfg->cxl_afu = cxl_pci_to_afu(pdev);
 
        rc = init_pci(cfg);