[PATCH] 2.5.15 IDE 61

- Fix typo in pdc202xx driver.

- Fix locking order in ioctl.

- Fix wrong time_after usage introduced in 60. Maybe the fact I always get is
   wrong is related to the fact that I'm using the mouse with the left hand!?

- Apply arch-clean-2 by Bartlomiej Zolnierkiewicz.

- Don't disable interrupts during ide_wait_stat(). I see no reason too.

- Push flags down from hwgroup to the ata_chaannel structure.

- Apply small fixes from Franz Sirl to make AEC6280 working properly again.

drivers/ide/ide-disk.c

@@ -1058,6 +1058,7 @@ static int idedisk_ioctl(struct ata_device *drive, struct inode *inode, struct f
 
 			if (put_user(val, (unsigned long *) arg))
 				return -EFAULT;
+
 			return 0;
 		}
 
@@ -1081,6 +1082,7 @@ static int idedisk_ioctl(struct ata_device *drive, struct inode *inode, struct f
 
 			if (put_user(val, (unsigned long *) arg))
 				return -EFAULT;
+
 			return 0;
 		}
 
@@ -1100,7 +1102,7 @@ static int idedisk_ioctl(struct ata_device *drive, struct inode *inode, struct f
 		}
 
 		case HDIO_GET_ACOUSTIC: {
-			u8 val = drive->acoustic;
+			unsigned long val = drive->acoustic;
 
 			if (put_user(val, (u8 *) arg))
 				return -EFAULT;
@@ -1128,6 +1130,7 @@ static int idedisk_ioctl(struct ata_device *drive, struct inode *inode, struct f
 
 			if (put_user(val, (u8 *) arg))
 				return -EFAULT;
+
 			return 0;
 		}
 
@@ -1153,7 +1156,7 @@ static int idedisk_ioctl(struct ata_device *drive, struct inode *inode, struct f
 
 
 /*
- *      IDE subdriver functions, registered with ide.c
+ * Subdriver functions.
  */
 static struct ata_operations idedisk_driver = {
 	owner:			THIS_MODULE,
@@ -1178,11 +1181,9 @@ static void __exit idedisk_exit (void)
 
 	while ((drive = ide_scan_devices(ATA_DISK, "ide-disk", &idedisk_driver, failed)) != NULL) {
 		if (idedisk_cleanup (drive)) {
-			printk (KERN_ERR "%s: cleanup_module() called while still busy\n", drive->name);
-			failed++;
+			printk(KERN_ERR "%s: cleanup_module() called while still busy\n", drive->name);
+			++failed;
 		}
-		/* We must remove proc entries defined in this module.
-		   Otherwise we oops while accessing these entries */
 	}
 }
 
@@ -1203,10 +1204,11 @@ int idedisk_init(void)
 			idedisk_cleanup(drive);
 			continue;
 		}
-		failed--;
+		--failed;
 	}
 	revalidate_drives();
 	MOD_DEC_USE_COUNT;
+
 	return 0;
 }
 

drivers/ide/ide-dma.c

@@ -382,10 +382,10 @@ static int dma_timer_expiry(struct ata_device *drive, struct request *rq)
 
 #ifdef DEBUG
 	printk("%s: dma_timer_expiry: dma status == 0x%02x\n", drive->name, dma_stat);
-#endif /* DEBUG */
+#endif
 
 #if 0
-	HWGROUP(drive)->expiry = NULL;	/* one free ride for now */
+	drive->expiry = NULL;	/* one free ride for now */
 #endif
 
 	if (dma_stat & 2) {	/* ERROR */

drivers/ide/ide-pci.c

@@ -122,7 +122,7 @@ static struct ata_channel __init *lookup_channel(unsigned long io_base, int boot
 	 * Unless there is a bootable card that does not use the standard
 	 * ports 1f0/170 (the ide0/ide1 defaults). The (bootable) flag.
 	 */
-	if (bootable) {
+	if (bootable == ON_BOARD) {
 		for (h = 0; h < MAX_HWIFS; ++h) {
 			hwif = &ide_hwifs[h];
 			if (hwif->chipset == ide_unknown)
@@ -703,7 +703,7 @@ static void __init scan_pcidev(struct pci_dev *dev)
 			hpt374_device_order_fixup(dev, d);
 	} else if (d->vendor == PCI_VENDOR_ID_PROMISE && d->device == PCI_DEVICE_ID_PROMISE_20268R)
 		pdc20270_device_order_fixup(dev, d);
-	else if ((dev->class >> 8) == PCI_CLASS_STORAGE_IDE) {
+	else {
 		printk(KERN_INFO "ATA: %s (%04x:%04x) on PCI slot %s\n",
 				dev->name, vendor, device, dev->slot_name);
 		setup_pci_device(dev, d);

drivers/ide/ide-taskfile.c

@@ -279,6 +279,7 @@ int drive_is_ready(struct ata_device *drive)
 
 	if (stat & BUSY_STAT)
 		return 0;	/* drive busy:  definitely not interrupting */
+
 	return 1;		/* drive ready: *might* be interrupting */
 }
 

drivers/ide/pdc202xx.c

@@ -1450,7 +1450,7 @@ static struct ata_pci_device chipsets[] __initdata = {
 		init_chipset: pdc202xx_init_chipset,
 		ata66_check: ata66_pdc202xx,
 		init_channel: ide_init_pdc202xx,
-		exnablebits: {{0x50,0x02,0x02}, {0x50,0x04,0x04}},
+		enablebits: {{0x50,0x02,0x02}, {0x50,0x04,0x04}},
 		bootable: OFF_BOARD,
 		extra: 48,
 		flags: ATA_F_IRQ  | ATA_F_DMA

drivers/ide/sl82c105.c

@@ -76,7 +76,7 @@ static void config_for_pio(ide_drive_t *drive, int pio, int report)
 	if (ide_config_drive_speed(drive, xfer_mode) == 0)
 		drv_ctrl = get_timing_sl82c105(t);
 
-	if (drive->using_dma == 0) {
+	if (!drive->using_dma) {
 		/*
 		 * If we are actually using MW DMA, then we can not
 		 * reprogram the interface drive control register.

drivers/ide/tcq.c

@@ -95,15 +95,15 @@ static void tcq_invalidate_queue(struct ata_device *drive)
 
 	del_timer(&ch->timer);
 
-	if (test_bit(IDE_DMA, &hwgroup->flags))
+	if (test_bit(IDE_DMA, &ch->active))
 		udma_stop(drive);
 
 	blk_queue_invalidate_tags(q);
 
 	drive->using_tcq = 0;
 	drive->queue_depth = 1;
-	clear_bit(IDE_BUSY, &hwgroup->flags);
-	clear_bit(IDE_DMA, &hwgroup->flags);
+	clear_bit(IDE_BUSY, &ch->active);
+	clear_bit(IDE_DMA, &ch->active);
 	hwgroup->handler = NULL;
 
 	/*
@@ -152,6 +152,7 @@ static void tcq_invalidate_queue(struct ata_device *drive)
 static void ata_tcq_irq_timeout(unsigned long data)
 {
 	struct ata_device *drive = (struct ata_device *) data;
+	struct ata_channel *ch = drive->channel;
 	ide_hwgroup_t *hwgroup = HWGROUP(drive);
 	unsigned long flags;
 
@@ -159,7 +160,7 @@ static void ata_tcq_irq_timeout(unsigned long data)
 
 	spin_lock_irqsave(&ide_lock, flags);
 
-	if (test_and_set_bit(IDE_BUSY, &hwgroup->flags))
+	if (test_and_set_bit(IDE_BUSY, &ch->active))
 		printk(KERN_ERR "ATA: %s: hwgroup not busy\n", __FUNCTION__);
 	if (hwgroup->handler == NULL)
 		printk(KERN_ERR "ATA: %s: missing isr!\n", __FUNCTION__);
@@ -170,7 +171,7 @@ static void ata_tcq_irq_timeout(unsigned long data)
 	 * if pending commands, try service before giving up
 	 */
 	if (ata_pending_commands(drive) && (GET_STAT() & SERVICE_STAT))
-		if (service(drive, hwgroup->rq) == ide_started)
+		if (service(drive, drive->rq) == ide_started)
 			return;
 
 	if (drive)
@@ -241,7 +242,7 @@ static ide_startstop_t service(struct ata_device *drive, struct request *rq)
 	 * Could be called with IDE_DMA in-progress from invalidate
 	 * handler, refuse to do anything.
 	 */
-	if (test_bit(IDE_DMA, &HWGROUP(drive)->flags))
+	if (test_bit(IDE_DMA, &drive->channel->active))
 		return ide_stopped;
 
 	/*
@@ -283,7 +284,7 @@ static ide_startstop_t service(struct ata_device *drive, struct request *rq)
 	 * should not happen, a buggy device could introduce loop
 	 */
 	if ((feat = GET_FEAT()) & NSEC_REL) {
-		HWGROUP(drive)->rq = NULL;
+		drive->rq = NULL;
 		printk("%s: release in service\n", drive->name);
 		return ide_stopped;
 	}
@@ -298,7 +299,7 @@ static ide_startstop_t service(struct ata_device *drive, struct request *rq)
 		return ide_stopped;
 	}
 
-	HWGROUP(drive)->rq = rq;
+	drive->rq = rq;
 
 	/*
 	 * we'll start a dma read or write, device will trigger
@@ -529,7 +530,7 @@ static ide_startstop_t udma_tcq_start(struct ata_device *drive, struct request *
 	struct ata_channel *ch = drive->channel;
 
 	TCQ_PRINTK("%s: setting up queued %d\n", __FUNCTION__, rq->tag);
-	if (!test_bit(IDE_BUSY, &ch->hwgroup->flags))
+	if (!test_bit(IDE_BUSY, &ch->active))
 		printk("queued_rw: IDE_BUSY not set\n");
 
 	if (tcq_wait_dataphase(drive))
@@ -584,7 +585,7 @@ ide_startstop_t udma_tcq_taskfile(struct ata_device *drive, struct request *rq)
 	 */
 	if ((feat = GET_FEAT()) & NSEC_REL) {
 		drive->immed_rel++;
-		HWGROUP(drive)->rq = NULL;
+		drive->rq = NULL;
 		set_irq(drive, ide_dmaq_intr);
 
 		TCQ_PRINTK("REL in queued_start\n");

include/asm-alpha/ide.h

@@ -82,10 +82,6 @@ static __inline__ void ide_init_default_hwifs(void)
 #endif
 }
 
-#define ide_ack_intr(hwif)		(1)
-#define ide_release_lock(lock)		do {} while (0)
-#define ide_get_lock(lock, hdlr, data)	do {} while (0)
-
 #endif /* __KERNEL__ */
 
 #endif /* __ASMalpha_IDE_H */

include/asm-arm/ide.h

@@ -21,10 +21,6 @@
 
 #include <asm/arch/ide.h>
 
-#define ide_ack_intr(hwif)		(1)
-#define ide_release_lock(lock)		do {} while (0)
-#define ide_get_lock(lock, hdlr, data)	do {} while (0)
-
 /*
  * We always use the new IDE port registering,
  * so these are fixed here.

include/asm-cris/ide.h

@@ -96,10 +96,6 @@ static __inline__ void ide_init_default_hwifs(void)
 #undef SUPPORT_SLOW_DATA_PORTS
 #define SUPPORT_SLOW_DATA_PORTS	0
 
-#define ide_ack_intr(hwif)		(1)
-#define ide_release_lock(lock)		do {} while (0)
-#define ide_get_lock(lock, hdlr, data)	do {} while (0)
-
 /* the drive addressing is done through a controller register on the Etrax CPU */
 void OUT_BYTE(unsigned char data, ide_ioreg_t reg);
 unsigned char IN_BYTE(ide_ioreg_t reg);

include/asm-i386/ide.h

@@ -86,10 +86,6 @@ static __inline__ void ide_init_default_hwifs(void)
 #endif
 }
 
-#define ide_ack_intr(hwif)		(1)
-#define ide_release_lock(lock)		do {} while (0)
-#define ide_get_lock(lock, hdlr, data)	do {} while (0)
-
 #endif /* __KERNEL__ */
 
 #endif /* __ASMi386_IDE_H */

include/asm-ia64/ide.h

@@ -92,10 +92,6 @@ ide_init_default_hwifs (void)
 #endif
 }
 
-#define ide_ack_intr(hwif)		(1)
-#define ide_release_lock(lock)		do {} while (0)
-#define ide_get_lock(lock, hdlr, data)	do {} while (0)
-
 #endif /* __KERNEL__ */
 
 #endif /* __ASM_IA64_IDE_H */

include/asm-m68k/ide.h

@@ -145,10 +145,13 @@ static __inline__ void ide_init_default_hwifs(void)
 
 #endif /* CONFIG_ATARI || CONFIG_Q40 */
 
+#define ATA_ARCH_ACK_INTR
+
+#ifdef CONFIG_ATARI
+#define ATA_ARCH_LOCK
 
 static __inline__ void ide_release_lock (int *ide_lock)
 {
-#ifdef CONFIG_ATARI
 	if (MACH_IS_ATARI) {
 		if (*ide_lock == 0) {
 			printk("ide_release_lock: bug\n");
@@ -157,12 +160,10 @@ static __inline__ void ide_release_lock (int *ide_lock)
 		*ide_lock = 0;
 		stdma_release();
 	}
-#endif /* CONFIG_ATARI */
 }
 
 static __inline__ void ide_get_lock (int *ide_lock, void (*handler)(int, void *, struct pt_regs *), void *data)
 {
-#ifdef CONFIG_ATARI
 	if (MACH_IS_ATARI) {
 		if (*ide_lock == 0) {
 			if (in_interrupt() > 0)
@@ -171,10 +172,8 @@ static __inline__ void ide_get_lock (int *ide_lock, void (*handler)(int, void *,
 			*ide_lock = 1;
 		}
 	}
-#endif /* CONFIG_ATARI */
 }
-
-#define ide_ack_intr(hwif)	((hwif)->hw.ack_intr ? (hwif)->hw.ack_intr(hwif) : 1)
+#endif /* CONFIG_ATARI */
 
 /*
  * On the Atari, we sometimes can't enable interrupts:

include/asm-mips/ide.h

@@ -68,10 +68,6 @@ static __inline__ void ide_init_default_hwifs(void)
 #undef  SUPPORT_VLB_SYNC
 #define SUPPORT_VLB_SYNC 0
 
-#define ide_ack_intr(hwif)		(1)
-#define ide_release_lock(lock)		do {} while (0)
-#define ide_get_lock(lock, hdlr, data)	do {} while (0)
-
 #endif /* __KERNEL__ */
 
 #endif /* __ASM_IDE_H */

include/asm-mips64/ide.h

@@ -68,10 +68,6 @@ static __inline__ void ide_init_default_hwifs(void)
 #endif
 }
 
-#define ide_ack_intr(hwif)		(1)
-#define ide_release_lock(lock)		do {} while (0)
-#define ide_get_lock(lock, hdlr, data)	do {} while (0)
-
 #endif /* __KERNEL__ */
 
 #endif /* __ASM_IDE_H */

include/asm-parisc/ide.h

@@ -81,10 +81,6 @@ static __inline__ void ide_init_default_hwifs(void)
 #endif
 }
 
-#define ide_ack_intr(hwif)		(1)
-#define ide_release_lock(lock)		do {} while (0)
-#define ide_get_lock(lock, hdlr, data)	do {} while (0)
-
 #endif /* __KERNEL__ */
 
 #endif /* __ASMi386_IDE_H */

include/asm-ppc/ide.h

@@ -108,12 +108,8 @@ static __inline__ void ide_init_default_hwifs(void)
 }
 
 #if (defined CONFIG_APUS || defined CONFIG_BLK_DEV_MPC8xx_IDE )
-#define ide_ack_intr(hwif) (hwif->hw.ack_intr ? hwif->hw.ack_intr(hwif) : 1)
-#else
-#define ide_ack_intr(hwif)		(1)
+#define ATA_ARCH_ACK_INTR
 #endif
-#define ide_release_lock(lock)		do {} while (0)
-#define ide_get_lock(lock, hdlr, data)	do {} while (0)
 
 #endif /* __KERNEL__ */
 

include/asm-ppc64/ide.h

@@ -50,10 +50,6 @@ static __inline__ void ide_init_default_hwifs(void)
 {
 }
 
-#define ide_ack_intr(hwif)		(1)
-#define ide_release_lock(lock)		do {} while (0)
-#define ide_get_lock(lock, hdlr, data)	do {} while (0)
-
 #endif /* __KERNEL__ */
 
 #endif /* __ASMPPC64_IDE_H */

include/asm-s390/ide.h

@@ -17,14 +17,6 @@
 
 #define ide__sti()	do {} while (0)
 
-/*
- * The following are not needed for the non-m68k ports
- */
-#define ide_ack_intr(hwif)		(1)
-#define ide_fix_driveid(id)		do {} while (0)
-#define ide_release_lock(lock)		do {} while (0)
-#define ide_get_lock(lock, hdlr, data)	do {} while (0)
-
 /*
  * We always use the new IDE port registering,
  * so these are fixed here.

include/asm-s390x/ide.h

@@ -17,10 +17,6 @@
 
 #define ide__sti()	do {} while (0)
 
-#define ide_ack_intr(hwif)		(1)
-#define ide_release_lock(lock)		do {} while (0)
-#define ide_get_lock(lock, hdlr, data)	do {} while (0)
-
 /*
  * We always use the new IDE port registering,
  * so these are fixed here.

include/asm-sh/ide.h

@@ -107,10 +107,6 @@ static __inline__ void ide_init_default_hwifs(void)
 #endif
 }
 
-#define ide_ack_intr(hwif)		(1)
-#define ide_release_lock(lock)		do {} while (0)
-#define ide_get_lock(lock, hdlr, data)	do {} while (0)
-
 #endif /* __KERNEL__ */
 
 #endif /* __ASM_SH_IDE_H */

include/asm-sparc/ide.h

@@ -165,11 +165,6 @@ static __inline__ void ide_outsw(unsigned long port,
 	/* __flush_dcache_range((unsigned long)src, end); */ /* P3 see hme */
 }
 
-#define ide_ack_intr(hwif)		(1)
-/* #define ide_ack_intr(hwif)	((hwif)->hw.ack_intr ? (hwif)->hw.ack_intr(hwif) : 1) */
-#define ide_release_lock(lock)		do {} while (0)
-#define ide_get_lock(lock, hdlr, data)	do {} while (0)
-
 #endif /* __KERNEL__ */
 
 #endif /* _SPARC_IDE_H */

include/asm-sparc64/ide.h

@@ -181,10 +181,6 @@ static __inline__ void ide_outsw(unsigned long port,
 #endif
 }
 
-#define ide_ack_intr(hwif)		(1)
-#define ide_release_lock(lock)		do {} while (0)
-#define ide_get_lock(lock, hdlr, data)	do {} while (0)
-
 #endif /* __KERNEL__ */
 
 #endif /* _SPARC64_IDE_H */

include/asm-x86_64/ide.h

@@ -86,10 +86,6 @@ static __inline__ void ide_init_default_hwifs(void)
 #endif
 }
 
-#define ide_ack_intr(hwif)		(1)
-#define ide_release_lock(lock)		do {} while (0)
-#define ide_get_lock(lock, hdlr, data)	do {} while (0)
-
 #endif /* __KERNEL__ */
 
 #endif /* __ASMi386_IDE_H */

include/linux/ide.h

@@ -239,6 +239,19 @@ void ide_setup_ports(hw_regs_t *hw,
 
 #include <asm/ide.h>
 
+/* Currently only m68k, apus and m8xx need it */
+#ifdef ATA_ARCH_ACK_INTR
+# define ide_ack_intr(hwif) (hwif->hw.ack_intr ? hwif->hw.ack_intr(hwif) : 1)
+#else
+# define ide_ack_intr(hwif) (1)
+#endif
+
+/* Currently only Atari needs it */
+#ifndef ATA_ARCH_LOCK
+# define ide_release_lock(lock)		do {} while (0)
+# define ide_get_lock(lock, hdlr, data)	do {} while (0)
+#endif
+
 /*
  * If the arch-dependant ide.h did not declare/define any OUT_BYTE or IN_BYTE
  * functions, we make some defaults here. The only architecture currently
@@ -324,14 +337,16 @@ struct ata_device {
 	 * magically just go away.
 	 */
 	request_queue_t	queue;	/* per device request queue */
+	struct request *rq;		/* current request */
 
 	unsigned long sleep;	/* sleep until this time */
 
-	byte     using_dma;		/* disk is using dma for read/write */
-	byte	 using_tcq;		/* disk is using queueing */
 	byte	 retry_pio;		/* retrying dma capable host in pio */
 	byte	 state;			/* retry state */
-	byte     dsc_overlap;		/* flag: DSC overlap */
+
+	unsigned using_dma	: 1;	/* disk is using dma for read/write */
+	unsigned using_tcq	: 1;	/* disk is using queueing */
+	unsigned dsc_overlap	: 1;	/* flag: DSC overlap */
 
 	unsigned waiting_for_dma: 1;	/* dma currently in progress */
 	unsigned busy		: 1;	/* currently doing revalidate_disk() */
@@ -403,11 +418,39 @@ struct ata_device {
 	int		max_depth;
 } ide_drive_t;
 
+/*
+ * Status returned by various functions.
+ */
+typedef enum {
+	ide_stopped,	/* no drive operation was started */
+	ide_started,	/* a drive operation was started, and a handler was set */
+	ide_released	/* started and released bus */
+} ide_startstop_t;
+
+/*
+ *  Interrupt and timeout handler type.
+ */
+typedef ide_startstop_t (ata_handler_t)(struct ata_device *, struct request *);
+typedef int (ata_expiry_t)(struct ata_device *, struct request *);
+
 enum {
 	ATA_PRIMARY	= 0,
 	ATA_SECONDARY	= 1
 };
 
+enum {
+	IDE_BUSY,	/* awaiting an interrupt */
+	IDE_SLEEP,
+	IDE_DMA		/* DMA in progress */
+};
+
+typedef struct hwgroup_s {
+	/* FIXME: We should look for busy request queues instead of looking at
+	 * the !NULL state of this field.
+	 */
+	ide_startstop_t (*handler)(struct ata_device *, struct request *);	/* irq handler, if active */
+} ide_hwgroup_t;
+
 struct ata_channel {
 	struct device	dev;		/* device handle */
 	int		unit;		/* channel number */
@@ -415,7 +458,9 @@ struct ata_channel {
 	struct hwgroup_s *hwgroup;	/* actually (ide_hwgroup_t *) */
 	struct timer_list timer;	/* failsafe timer */
 	int (*expiry)(struct ata_device *, struct request *);	/* irq handler, if active */
+	unsigned long poll_timeout;	/* timeout value during polled operations */
 	struct ata_device *drive;	/* last serviced drive */
+	unsigned long active;		/* active processing request */
 
 	ide_ioreg_t	io_ports[IDE_NR_PORTS];	/* task file registers */
 	hw_regs_t	hw;		/* Hardware info */
@@ -506,9 +551,8 @@ struct ata_channel {
 #endif
 	/* driver soft-power interface */
 	int (*busproc)(struct ata_device *, int);
-	byte		bus_state;	/* power state of the IDE bus */
 
-	unsigned long poll_timeout; /* timeout value during polled operations */
+	byte		bus_state;	/* power state of the IDE bus */
 };
 
 /*
@@ -517,27 +561,8 @@ struct ata_channel {
 extern int ide_register_hw(hw_regs_t *hw, struct ata_channel **hwifp);
 extern void ide_unregister(struct ata_channel *hwif);
 
-/*
- * Status returned by various functions.
- */
-typedef enum {
-	ide_stopped,	/* no drive operation was started */
-	ide_started,	/* a drive operation was started, and a handler was set */
-	ide_released	/* started and released bus */
-} ide_startstop_t;
-
-/*
- *  Interrupt and timeout handler type.
- */
-typedef ide_startstop_t (ata_handler_t)(struct ata_device *, struct request *);
-typedef int (ata_expiry_t)(struct ata_device *, struct request *);
-
 struct ata_taskfile;
 
-#define IDE_BUSY	0	/* awaiting an interrupt */
-#define IDE_SLEEP	1
-#define IDE_DMA		2	/* DMA in progress */
-
 #define IDE_MAX_TAG	32
 
 #ifdef CONFIG_BLK_DEV_IDE_TCQ
@@ -561,15 +586,6 @@ static inline int ata_can_queue(struct ata_device *drive)
 # define ata_can_queue(drive)		(1)
 #endif
 
-typedef struct hwgroup_s {
-	/* FIXME: We should look for busy request queues instead of looking at
-	 * the !NULL state of this field.
-	 */
-	ide_startstop_t (*handler)(struct ata_device *, struct request *);	/* irq handler, if active */
-	unsigned long flags;		/* BUSY, SLEEPING */
-	struct request *rq;		/* current request */
-} ide_hwgroup_t;
-
 /* FIXME: kill this as soon as possible */
 #define PROC_IDE_READ_RETURN(page,start,off,count,eof,len) return 0;