patch-2.2.10 linux/drivers/block/ide.c

• Lines: 49
• Date: Sun Jun 13 10:40:27 1999
• Orig file: v2.2.9/linux/drivers/block/ide.c
• Orig date: Thu May 13 23:10:29 1999

diff -u --recursive --new-file v2.2.9/linux/drivers/block/ide.c linux/drivers/block/ide.c
@@ -272,7 +272,8 @@
 	if (drive->removable && id != NULL) {
 		if (!strncmp(id->model, "KODAK ATA_FLASH", 15)	/* Kodak */
 		 || !strncmp(id->model, "Hitachi CV", 10)		/* Hitachi */
-		 || !strncmp(id->model, "SunDisk SDCFB", 13))	/* SunDisk */
+		 || !strncmp(id->model, "SunDisk SDCFB", 13)	/* SunDisk */
+		 || !strncmp(id->model, "HAGIWARA HPC", 12))	/* Hagiwara */
 		{
 			return 1;	/* yes, it is a flash memory card */
 		}
@@ -926,6 +927,7 @@
 int ide_wait_stat (ide_drive_t *drive, byte good, byte bad, unsigned long timeout)
 {
 	byte stat;
+	int i;
 	unsigned long flags;
 
 	udelay(1);	/* spec allows drive 400ns to assert "BUSY" */
@@ -942,9 +944,18 @@
 		}
 		__restore_flags(flags);	/* local CPU only */
 	}
-	udelay(1);	/* allow status to settle, then read it again */
-	if (OK_STAT((stat = GET_STAT()), good, bad))
-		return 0;
+	/*
+	 * Allow status to settle, then read it again.
+	 * A few rare drives vastly violate the 400ns spec here,
+	 * so we'll wait up to 10usec for a "good" status
+	 * rather than expensively fail things immediately.
+	 * This fix courtesy of Matthew Faupel & Niccolo Rigacci.
+	 */
+	for (i = 0; i < 10; i++) {
+		udelay(1);
+		if (OK_STAT((stat = GET_STAT()), good, bad))
+			return 0;
+	}
 	ide_error(drive, "status error", stat);
 	return 1;
 }
@@ -1722,6 +1733,8 @@
 	sti();
 	for (unit = 0; unit < MAX_DRIVES; ++unit) {
 		drive = &hwif->drives[unit];
+		if (!drive->present)
+			continue;
 		minor = drive->select.b.unit << PARTN_BITS;
 		for (p = 0; p < (1<<PARTN_BITS); ++p) {
 			if (drive->part[p].nr_sects > 0) {