diff --git a/drivers/ata/ahci.c b/drivers/ata/ahci.c
index 9e5b121fb0cb8e45ee30fcd7bc8710026b57329b..e7e2c7a147f132948f0decee5cec658cb2389b12 100644
--- a/drivers/ata/ahci.c
+++ b/drivers/ata/ahci.c
@@ -3037,6 +3037,14 @@ static bool ahci_broken_suspend(struct pci_dev *pdev)
 		 * On HP dv[4-6] and HDX18 with earlier BIOSen, link
 		 * to the harddisk doesn't become online after
 		 * resuming from STR.  Warn and fail suspend.
+		 *
+		 * http://bugzilla.kernel.org/show_bug.cgi?id=12276
+		 *
+		 * Use dates instead of versions to match as HP is
+		 * apparently recycling both product and version
+		 * strings.
+		 *
+		 * http://bugzilla.kernel.org/show_bug.cgi?id=15462
 		 */
 		{
 			.ident = "dv4",
@@ -3045,7 +3053,7 @@ static bool ahci_broken_suspend(struct pci_dev *pdev)
 				DMI_MATCH(DMI_PRODUCT_NAME,
 					  "HP Pavilion dv4 Notebook PC"),
 			},
-			.driver_data = "F.30", /* cutoff BIOS version */
+			.driver_data = "20090105",	/* F.30 */
 		},
 		{
 			.ident = "dv5",
@@ -3054,7 +3062,7 @@ static bool ahci_broken_suspend(struct pci_dev *pdev)
 				DMI_MATCH(DMI_PRODUCT_NAME,
 					  "HP Pavilion dv5 Notebook PC"),
 			},
-			.driver_data = "F.16", /* cutoff BIOS version */
+			.driver_data = "20090506",	/* F.16 */
 		},
 		{
 			.ident = "dv6",
@@ -3063,7 +3071,7 @@ static bool ahci_broken_suspend(struct pci_dev *pdev)
 				DMI_MATCH(DMI_PRODUCT_NAME,
 					  "HP Pavilion dv6 Notebook PC"),
 			},
-			.driver_data = "F.21",	/* cutoff BIOS version */
+			.driver_data = "20090423",	/* F.21 */
 		},
 		{
 			.ident = "HDX18",
@@ -3072,7 +3080,7 @@ static bool ahci_broken_suspend(struct pci_dev *pdev)
 				DMI_MATCH(DMI_PRODUCT_NAME,
 					  "HP HDX18 Notebook PC"),
 			},
-			.driver_data = "F.23",	/* cutoff BIOS version */
+			.driver_data = "20090430",	/* F.23 */
 		},
 		/*
 		 * Acer eMachines G725 has the same problem.  BIOS
@@ -3080,6 +3088,8 @@ static bool ahci_broken_suspend(struct pci_dev *pdev)
 		 * work.  Inbetween, there are V1.06, V2.06 and V3.03
 		 * that we don't have much idea about.  For now,
 		 * blacklist anything older than V3.04.
+		 *
+		 * http://bugzilla.kernel.org/show_bug.cgi?id=15104
 		 */
 		{
 			.ident = "G725",
@@ -3087,19 +3097,21 @@ static bool ahci_broken_suspend(struct pci_dev *pdev)
 				DMI_MATCH(DMI_SYS_VENDOR, "eMachines"),
 				DMI_MATCH(DMI_PRODUCT_NAME, "eMachines G725"),
 			},
-			.driver_data = "V3.04",	/* cutoff BIOS version */
+			.driver_data = "20091216",	/* V3.04 */
 		},
 		{ }	/* terminate list */
 	};
 	const struct dmi_system_id *dmi = dmi_first_match(sysids);
-	const char *ver;
+	int year, month, date;
+	char buf[9];
 
 	if (!dmi || pdev->bus->number || pdev->devfn != PCI_DEVFN(0x1f, 2))
 		return false;
 
-	ver = dmi_get_system_info(DMI_BIOS_VERSION);
+	dmi_get_date(DMI_BIOS_DATE, &year, &month, &date);
+	snprintf(buf, sizeof(buf), "%04d%02d%02d", year, month, date);
 
-	return !ver || strcmp(ver, dmi->driver_data) < 0;
+	return strcmp(buf, dmi->driver_data) < 0;
 }
 
 static bool ahci_broken_online(struct pci_dev *pdev)