Fix IRQ routing failure of HighPoint RAID driver rr272x_1x in Linux 4.3 and 4.4 versions (http://www.highpoint-tech.com/USA_new/series_rr272x_configuration.htm)

rr272x_1x-fix-irq-routing-failure.patch

diff --git a/drivers/rr272x/osm/linux/osm_linux.c b/drivers/rr272x/osm/linux/osm_linux.c
index d46ed92..aa5b5f5 100644
--- a/drivers/rr272x/osm/linux/osm_linux.c
+++ b/drivers/rr272x/osm/linux/osm_linux.c
@@ -29,21 +29,6 @@ static int hpt_init_one(HIM *him, struct pci_dev *pcidev)
 	PVBUS vbus;
 	PVBUS_EXT vbus_ext;
 	int order,size;
-	
-	if (pci_enable_device(pcidev)) {
-		os_printk("failed to enable the pci device");
-		return -1;
-	}
-
-	pci_set_master(pcidev);
-
-	/* enable 64-bit DMA if possible */
-	if (pci_set_dma_mask(pcidev, 0xffffffffffffffffULL)) {
-		if (pci_set_dma_mask(pcidev, 0xffffffffUL)) {
-			os_printk("failed to set DMA mask\n");
-			return -1;
-		}
-	}
 
 	pci_id.vid = pcidev->vendor;
 	pci_id.did = pcidev->device;
@@ -2611,7 +2596,7 @@ EXPORT_NO_SYMBOLS;
 #else 
 
 /* scsi_module.c is deprecated in kernel 2.6 */
-static int __init init_this_scsi_driver(void)
+static int init_this_scsi_driver(void)
 {
 	struct scsi_host_template *sht = &driver_template;
 	struct Scsi_Host *shost;
@@ -2646,7 +2631,7 @@ static int __init init_this_scsi_driver(void)
 	return error;
 }
 
-static void __exit exit_this_scsi_driver(void)
+static void exit_this_scsi_driver(void)
 {
 	struct scsi_host_template *sht = &driver_template;
 	struct Scsi_Host *shost, *s;
@@ -2666,8 +2651,72 @@ static void __exit exit_this_scsi_driver(void)
 		scsi_unregister(shost);
 }
 
-module_init(init_this_scsi_driver);
-module_exit(exit_this_scsi_driver);
+static int linux_pci_probe(struct pci_dev *pcidev,
+	                   const struct pci_device_id *id)
+{
+	int ret;
+
+	ret = pci_enable_device(pcidev);
+	if (ret) {
+		os_printk("failed to enable the pci device");
+		return ret;
+	}
+
+	pci_set_master(pcidev);
+
+	/* enable 64-bit DMA if possible */
+	ret = pci_set_dma_mask(pcidev, 0xffffffffffffffffULL);
+	if (ret) {
+		ret = pci_set_dma_mask(pcidev, 0xffffffffUL);
+		if (ret) {
+			os_printk("failed to set DMA mask\n");
+			return -1;
+		}
+	}
+
+	return 0;
+}
+
+static void linux_pci_remove(struct pci_dev *pdev)
+{
+	/* nothing to do yet */
+}
+
+static struct pci_device_id linux_pci_id_table[] = {
+	{ PCI_DEVICE(0x11ab, 0x9180) },
+	{ PCI_DEVICE(0x11ab, 0x9480) },
+	{ PCI_DEVICE(0x1b4b, 0x9480) },
+	{ PCI_DEVICE(0x1103, 0x2720) },
+	{ PCI_DEVICE(0x1103, 0x2721) },
+	{ PCI_DEVICE(0x1103, 0x2722) },
+	{ PCI_DEVICE(0x1103, 0x2710) },
+	{ PCI_DEVICE(0x1103, 0x2711) },
+	{ 0, }
+};
+
+MODULE_DEVICE_TABLE(pci, linux_pci_id_table);
+
+static struct pci_driver linux_pci_driver = {
+	.name = driver_name,
+	.id_table = linux_pci_id_table,
+	.probe = linux_pci_probe,
+	.remove = linux_pci_remove,
+};
+
+static int __init linux_pci_driver_init(void)
+{
+	pci_register_driver(&linux_pci_driver);
+	return init_this_scsi_driver();
+}
+
+static void __exit linux_pci_driver_exit(void)
+{
+	exit_this_scsi_driver();
+	pci_unregister_driver(&linux_pci_driver);
+}
+
+module_init(linux_pci_driver_init);
+module_exit(linux_pci_driver_exit);
 
 #endif
 

This patch is for Linux 4.3 and 4.4 versions. Note that this patch is not needed any more since Linux 4.5 version.

• TA1-PCI card worked in v4.2, fails in v4.3
  https://bugzilla.kernel.org/show_bug.cgi?id=111211
• PCI device driver broken between 4.2 and 4.3
  http://www.spinics.net/lists/linux-pci/msg48507.html
• Revert "PCI, x86: Implement pcibios_alloc_irq() and pcibios_free_irq()"
  https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=6c777e8799a93e3bdb67bec622429e1b48dc90fb