[SCSI] dpt_i2o: sysfs code

Create a /sys/class/dpt_i2o directory and populate it with dptiN directories. Each dptiN directory contains a "dev" file that makes udev create /dev/dptiN Signed-off-by: Miquel van Smoorenburg <[email protected]> Acked-by: Mark Salyzyn <[email protected]> Signed-off-by: James Bottomley <[email protected]>
ambv · May 2, 2008 · 1ed4391 · 1ed4391
1 parent 62ac5ae
commit 1ed4391
Showing 1 changed file with 26 additions and 0 deletions.
diff --git a/drivers/scsi/dpt_i2o.c b/drivers/scsi/dpt_i2o.c
@@ -111,6 +111,8 @@ static int sys_tbl_len;
 static adpt_hba* hba_chain = NULL;
 static int hba_count = 0;
 
+static struct class *adpt_sysfs_class;
+
 #ifdef CONFIG_COMPAT
 static long compat_adpt_ioctl(struct file *, unsigned int, unsigned long);
 #endif
@@ -254,13 +256,29 @@ static int adpt_detect(struct scsi_host_template* sht)
 		adpt_inquiry(pHba);
 	}
 
+	adpt_sysfs_class = class_create(THIS_MODULE, "dpt_i2o");
+	if (IS_ERR(adpt_sysfs_class)) {
+		printk(KERN_WARNING"dpti: unable to create dpt_i2o class\n");
+		adpt_sysfs_class = NULL;
+	}
+
 	for (pHba = hba_chain; pHba; pHba = pHba->next) {
 		if (adpt_scsi_host_alloc(pHba, sht) < 0){
 			adpt_i2o_delete_hba(pHba);
 			continue;
 		}
 		pHba->initialized = TRUE;
 		pHba->state &= ~DPTI_STATE_RESET;
+		if (adpt_sysfs_class) {
+			struct device *dev = device_create(adpt_sysfs_class,
+				NULL, MKDEV(DPTI_I2O_MAJOR, pHba->unit),
+				"dpti%d", pHba->unit);
+			if (IS_ERR(dev)) {
+				printk(KERN_WARNING"dpti%d: unable to "
+					"create device in dpt_i2o class\n",
+					pHba->unit);
+			}
+		}
 	}
 
 	// Register our control device node
@@ -1212,8 +1230,16 @@ static void adpt_i2o_delete_hba(adpt_hba* pHba)
 	pci_dev_put(pHba->pDev);
 	kfree(pHba);
 
+	if (adpt_sysfs_class)
+		device_destroy(adpt_sysfs_class,
+				MKDEV(DPTI_I2O_MAJOR, pHba->unit));
+
 	if(hba_count <= 0){
 		unregister_chrdev(DPTI_I2O_MAJOR, DPT_DRIVER);   
+		if (adpt_sysfs_class) {
+			class_destroy(adpt_sysfs_class);
+			adpt_sysfs_class = NULL;
+		}
 	}
 }