[PATCH] PCI/VPD: Remove pci_set_vpd_size

[Heiner Kallweit <hkallweit1@gmail.com>]

24a1720a0841 ("cxgb4: collect serial config version from register")
removed the only usage of pci_set_vpd_size(). If a device needs to
override the auto-detected VPD size, then this can be done using a
PCI quirk, like it's done for Chelsio devices. There's no need to
allow drivers to change the VPD size. So let's remove
pci_set_vpd_size().

Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
---
- Referenced commit just landed in linux-next via the netdev tree.
---
 drivers/pci/vpd.c   | 47 +++++++--------------------------------------
 include/linux/pci.h |  1 -
 2 files changed, 7 insertions(+), 41 deletions(-)

diff --git a/drivers/pci/vpd.c b/drivers/pci/vpd.c
index 4cf0d77ca..d1cbc5e64 100644
--- a/drivers/pci/vpd.c
+++ b/drivers/pci/vpd.c
@@ -16,7 +16,6 @@
 struct pci_vpd_ops {
 	ssize_t (*read)(struct pci_dev *dev, loff_t pos, size_t count, void *buf);
 	ssize_t (*write)(struct pci_dev *dev, loff_t pos, size_t count, const void *buf);
-	int (*set_size)(struct pci_dev *dev, size_t len);
 };
 
 struct pci_vpd {
@@ -59,19 +58,6 @@ ssize_t pci_write_vpd(struct pci_dev *dev, loff_t pos, size_t count, const void
 }
 EXPORT_SYMBOL(pci_write_vpd);
 
-/**
- * pci_set_vpd_size - Set size of Vital Product Data space
- * @dev:	pci device struct
- * @len:	size of vpd space
- */
-int pci_set_vpd_size(struct pci_dev *dev, size_t len)
-{
-	if (!dev->vpd || !dev->vpd->ops)
-		return -ENODEV;
-	return dev->vpd->ops->set_size(dev, len);
-}
-EXPORT_SYMBOL(pci_set_vpd_size);
-
 #define PCI_VPD_MAX_SIZE (PCI_VPD_ADDR_MASK + 1)
 
 /**
@@ -296,23 +282,19 @@ static ssize_t pci_vpd_write(struct pci_dev *dev, loff_t pos, size_t count,
 	return ret ? ret : count;
 }
 
-static int pci_vpd_set_size(struct pci_dev *dev, size_t len)
+static void pci_vpd_set_size(struct pci_dev *dev, size_t len)
 {
 	struct pci_vpd *vpd = dev->vpd;
 
-	if (len == 0 || len > PCI_VPD_MAX_SIZE)
-		return -EIO;
-
-	vpd->valid = 1;
-	vpd->len = len;
-
-	return 0;
+	if (vpd && len && len <= PCI_VPD_MAX_SIZE) {
+		vpd->valid = 1;
+		vpd->len = len;
+	}
 }
 
 static const struct pci_vpd_ops pci_vpd_ops = {
 	.read = pci_vpd_read,
 	.write = pci_vpd_write,
-	.set_size = pci_vpd_set_size,
 };
 
 static ssize_t pci_vpd_f0_read(struct pci_dev *dev, loff_t pos, size_t count,
@@ -345,24 +327,9 @@ static ssize_t pci_vpd_f0_write(struct pci_dev *dev, loff_t pos, size_t count,
 	return ret;
 }
 
-static int pci_vpd_f0_set_size(struct pci_dev *dev, size_t len)
-{
-	struct pci_dev *tdev = pci_get_slot(dev->bus,
-					    PCI_DEVFN(PCI_SLOT(dev->devfn), 0));
-	int ret;
-
-	if (!tdev)
-		return -ENODEV;
-
-	ret = pci_set_vpd_size(tdev, len);
-	pci_dev_put(tdev);
-	return ret;
-}
-
 static const struct pci_vpd_ops pci_vpd_f0_ops = {
 	.read = pci_vpd_f0_read,
 	.write = pci_vpd_f0_write,
-	.set_size = pci_vpd_f0_set_size,
 };
 
 int pci_vpd_init(struct pci_dev *dev)
@@ -528,9 +495,9 @@ static void quirk_chelsio_extend_vpd(struct pci_dev *dev)
 	 * limits.
 	 */
 	if (chip == 0x0 && prod >= 0x20)
-		pci_set_vpd_size(dev, 8192);
+		pci_vpd_set_size(dev, 8192);
 	else if (chip >= 0x4 && func < 0x8)
-		pci_set_vpd_size(dev, 2048);
+		pci_vpd_set_size(dev, 2048);
 }
 
 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_CHELSIO, PCI_ANY_ID,
diff --git a/include/linux/pci.h b/include/linux/pci.h
index 86c799c97..edadc62ae 100644
--- a/include/linux/pci.h
+++ b/include/linux/pci.h
@@ -1302,7 +1302,6 @@ void pci_unlock_rescan_remove(void);
 /* Vital Product Data routines */
 ssize_t pci_read_vpd(struct pci_dev *dev, loff_t pos, size_t count, void *buf);
 ssize_t pci_write_vpd(struct pci_dev *dev, loff_t pos, size_t count, const void *buf);
-int pci_set_vpd_size(struct pci_dev *dev, size_t len);
 
 /* Helper functions for low-level code (drivers/pci/setup-[bus,res].c) */
 resource_size_t pcibios_retrieve_fw_addr(struct pci_dev *dev, int idx);
-- 
2.30.0