patch-2.3.40 linux/drivers/block/hd.c

• Lines: 119
• Date: Tue Jan 18 18:54:21 2000
• Orig file: v2.3.39/linux/drivers/block/hd.c
• Orig date: Tue Jan 11 22:31:39 2000

diff -u --recursive --new-file v2.3.39/linux/drivers/block/hd.c linux/drivers/block/hd.c
@@ -662,15 +662,11 @@
 	return 0;
 }
 
-static void hd_geninit(struct gendisk *);
-
 static struct gendisk hd_gendisk = {
 	MAJOR_NR,	/* Major number */	
 	"hd",		/* Major name */
 	6,		/* Bits to shift to get real from partition */
 	1 << 6,		/* Number of partitions per real */
-	MAX_HD,		/* maximum number of real */
-	hd_geninit,	/* init function */
 	hd,		/* hd struct */
 	hd_sizes,	/* block sizes */
 	0,		/* number */
@@ -690,6 +686,12 @@
 	sti();
 }
 
+static struct block_device_operations hd_fops = {
+	open:		hd_open,
+	release:	hd_release,
+	ioctl:		hd_ioctl,
+};
+
 /*
  * This is the hard disk IRQ description. The SA_INTERRUPT in sa_flags
  * means we run the IRQ-handler with interrupts disabled:  this is bad for
@@ -699,10 +701,17 @@
  * We enable interrupts in some of the routines after making sure it's
  * safe.
  */
-static void hd_geninit(struct gendisk *ignored)
+static void hd_geninit(void)
 {
 	int drive;
 
+	for(drive=0; drive < (MAX_HD << 6); drive++) {
+		hd_blocksizes[drive] = 1024;
+		hd_hardsectsizes[drive] = 512;
+	}
+	blksize_size[MAJOR_NR] = hd_blocksizes;
+	hardsect_size[MAJOR_NR] = hd_hardsectsizes;
+
 #ifdef __i386__
 	if (!NR_HD) {
 		extern struct drive_info drive_info;
@@ -765,37 +774,30 @@
 #endif
 
 	for (drive=0 ; drive < NR_HD ; drive++) {
-		hd[drive<<6].nr_sects = hd_info[drive].head *
-			hd_info[drive].sect * hd_info[drive].cyl;
 		printk ("hd%c: %ldMB, CHS=%d/%d/%d\n", drive+'a',
 			hd[drive<<6].nr_sects / 2048, hd_info[drive].cyl,
 			hd_info[drive].head, hd_info[drive].sect);
 	}
-	if (NR_HD) {
-		if (request_irq(HD_IRQ, hd_interrupt, SA_INTERRUPT, "hd", NULL)) {
-			printk("hd: unable to get IRQ%d for the hard disk driver\n",HD_IRQ);
-			NR_HD = 0;
-		} else {
-			request_region(HD_DATA, 8, "hd");
-			request_region(HD_CMD, 1, "hd(cmd)");
-		}
+	if (!NR_HD)
+		return;
+
+	if (request_irq(HD_IRQ, hd_interrupt, SA_INTERRUPT, "hd", NULL)) {
+		printk("hd: unable to get IRQ%d for the hard disk driver\n",
+			HD_IRQ);
+		NR_HD = 0;
+		return;
 	}
+	request_region(HD_DATA, 8, "hd");
+	request_region(HD_CMD, 1, "hd(cmd)");
+
 	hd_gendisk.nr_real = NR_HD;
 
-	for(drive=0; drive < (MAX_HD << 6); drive++) {
-		hd_blocksizes[drive] = 1024;
-		hd_hardsectsizes[drive] = 512;
-	}
-	blksize_size[MAJOR_NR] = hd_blocksizes;
-	hardsect_size[MAJOR_NR] = hd_hardsectsizes;
+	for(drive=0; drive < NR_HD; drive++)
+		register_disk(&hd_gendisk, MKDEV(MAJOR_NR,drive<<6), 1<<6,
+			&hd_fops, hd_info[drive].head * hd_info[drive].sect *
+			hd_info[drive].cyl);
 }
 
-static struct block_device_operations hd_fops = {
-	open:		hd_open,
-	release:	hd_release,
-	ioctl:		hd_ioctl,
-};
-
 int __init hd_init(void)
 {
 	if (register_blkdev(MAJOR_NR,"hd",&hd_fops)) {
@@ -807,6 +809,7 @@
 	hd_gendisk.next = gendisk_head;
 	gendisk_head = &hd_gendisk;
 	timer_table[HD_TIMER].fn = hd_times_out;
+	hd_geninit();
 	return 0;
 }
 
@@ -867,8 +870,7 @@
 	MAYBE_REINIT;
 #endif
 
-	gdev->part[start].nr_sects = CAPACITY;
-	resetup_one_dev(gdev, target);
+	grok_partitions(gdev, target, 1<<6, CAPACITY);
 
 	DEVICE_BUSY = 0;
 	wake_up(&busy_wait);