---

yaml --- r: 184557 b: refs/heads/master c: b55ac1b h: refs/heads/master i: 184555: cfa728f v: v3
git-mirror · Feb 28, 2010 · 7e1034f · 7e1034f
1 parent 9d993a3
commit 7e1034f
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Showing 6 changed files with 66 additions and 43 deletions.
diff --git a/[refs] b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 7ad506fa1adc2da3d394c562f09b8e1b3026c402
+refs/heads/master: b55ac1b22690d2e5b02a61cf6d69c2d66969c79d
diff --git a/trunk/drivers/net/bnx2.c b/trunk/drivers/net/bnx2.c
@@ -7769,28 +7769,12 @@ bnx2_read_vpd_fw_ver(struct bnx2 *bp)
 	}
 
 	for (i = 0; i <= BNX2_VPD_LEN - 3; ) {
-		unsigned char val = data[i];
 		unsigned int block_end;
 
-		if (val & PCI_VPD_LRDT) {
-			if (i + PCI_VPD_LRDT_TAG_SIZE > BNX2_VPD_LEN)
-				break;
-
-			if (val != PCI_VPD_LRDT_RO_DATA) {
-				i += PCI_VPD_LRDT_TAG_SIZE +
-				     pci_vpd_lrdt_size(&data[i]);
-
-				continue;
-			}
-		} else {
-			if ((val & PCI_VPD_SRDT_TIN_MASK) == PCI_VPD_STIN_END)
-				break;
-
-			i += PCI_VPD_SRDT_TAG_SIZE +
-			     pci_vpd_srdt_size(&data[i]);
-
-			continue;
-		}
+		i = pci_vpd_find_tag(data, i, BNX2_VPD_LEN,
+				     PCI_VPD_LRDT_RO_DATA);
+		if (i < 0)
+			break;
 
 		block_end = (i + PCI_VPD_LRDT_TAG_SIZE +
 			    pci_vpd_lrdt_size(&data[i]));

diff --git a/trunk/drivers/net/tg3.c b/trunk/drivers/net/tg3.c
@@ -12547,7 +12547,7 @@ static int __devinit tg3_phy_probe(struct tg3 *tp)
 static void __devinit tg3_read_partno(struct tg3 *tp)
 {
 	unsigned char vpd_data[TG3_NVM_VPD_LEN];   /* in little-endian format */
-	unsigned int i;
+	int i;
 	u32 magic;
 
 	if ((tp->tg3_flags3 & TG3_FLG3_NO_NVRAM) ||
@@ -12586,28 +12586,12 @@ static void __devinit tg3_read_partno(struct tg3 *tp)
 
 	/* Now parse and find the part number. */
 	for (i = 0; i < TG3_NVM_VPD_LEN - 2; ) {
-		unsigned char val = vpd_data[i];
 		unsigned int block_end;
 
-		if (val & PCI_VPD_LRDT) {
-			if (i + PCI_VPD_LRDT_TAG_SIZE > TG3_NVM_VPD_LEN)
-				break;
-
-			if (val != PCI_VPD_LRDT_RO_DATA) {
-				i += PCI_VPD_LRDT_TAG_SIZE +
-				     pci_vpd_lrdt_size(&vpd_data[i]);
-
-				continue;
-			}
-		} else {
-			if ((val & PCI_VPD_SRDT_TIN_MASK) == PCI_VPD_STIN_END)
-				break;
-
-			i += PCI_VPD_SRDT_TAG_SIZE +
-			     pci_vpd_srdt_size(&vpd_data[i]);
-
-			continue;
-		}
+		i = pci_vpd_find_tag(vpd_data, i, TG3_NVM_VPD_LEN,
+				     PCI_VPD_LRDT_RO_DATA);
+		if (i < 0)
+			break;
 
 		block_end = i + PCI_VPD_LRDT_TAG_SIZE +
 			    pci_vpd_lrdt_size(&vpd_data[i]);

diff --git a/trunk/drivers/pci/Makefile b/trunk/drivers/pci/Makefile
@@ -4,7 +4,7 @@
 
 obj-y		+= access.o bus.o probe.o remove.o pci.o quirks.o \
 			pci-driver.o search.o pci-sysfs.o rom.o setup-res.o \
-			irq.o
+			irq.o vpd.o
 obj-$(CONFIG_PROC_FS) += proc.o
 obj-$(CONFIG_SYSFS) += slot.o
 

diff --git a/trunk/drivers/pci/vpd.c b/trunk/drivers/pci/vpd.c
@@ -0,0 +1,43 @@
+/*
+ * File:	vpd.c
+ * Purpose:	Provide PCI VPD support
+ *
+ * Copyright (C) 2010 Broadcom Corporation.
+ */
+
+#include <linux/pci.h>
+
+int pci_vpd_find_tag(const u8 *buf, unsigned int off, unsigned int len, u8 rdt)
+{
+	int i;
+
+	for (i = off; i < len; ) {
+		u8 val = buf[i];
+
+		if (val & PCI_VPD_LRDT) {
+			/* Don't return success of the tag isn't complete */
+			if (i + PCI_VPD_LRDT_TAG_SIZE > len)
+				break;
+
+			if (val == rdt)
+				return i;
+
+			i += PCI_VPD_LRDT_TAG_SIZE +
+			     pci_vpd_lrdt_size(&buf[i]);
+		} else {
+			u8 tag = val & ~PCI_VPD_SRDT_LEN_MASK;
+
+			if (tag == rdt)
+				return i;
+
+			if (tag == PCI_VPD_SRDT_END)
+				break;
+
+			i += PCI_VPD_SRDT_TAG_SIZE +
+			     pci_vpd_srdt_size(&buf[i]);
+		}
+	}
+
+	return -ENOENT;
+}
+EXPORT_SYMBOL_GPL(pci_vpd_find_tag);
diff --git a/trunk/include/linux/pci.h b/trunk/include/linux/pci.h
@@ -1395,5 +1395,17 @@ static inline u8 pci_vpd_srdt_size(const u8 *srdt)
 	return (*srdt) & PCI_VPD_SRDT_LEN_MASK;
 }
 
+/**
+ * pci_vpd_find_tag - Locates the Resource Data Type tag provided
+ * @buf: Pointer to buffered vpd data
+ * @off: The offset into the buffer at which to begin the search
+ * @len: The length of the vpd buffer
+ * @rdt: The Resource Data Type to search for
+ *
+ * Returns the index where the Resource Data Type was found or
+ * -ENOENT otherwise.
+ */
+int pci_vpd_find_tag(const u8 *buf, unsigned int off, unsigned int len, u8 rdt);
+
 #endif /* __KERNEL__ */
 #endif /* LINUX_PCI_H */