Merge branch 'for-linus' of git://git.kernel.dk/linux-2.6-block

* 'for-linus' of git://git.kernel.dk/linux-2.6-block:
  Cleanup umem driver: fix most checkpatch warnings, conform to kernel
  block: let elv_register() return void
  as-iosched: fix write batch start point
  as-iosched: fix incorrect comments
  block: use jiffies conversion functions in scsi_ioctl.c

1 files changed, 81 insertions, 156 deletions

diff --git a/drivers/block/umem.c b/drivers/block/umem.c
index 5f5095afb06b..c24e1bdbad43 100644
--- a/drivers/block/umem.c
+++ b/drivers/block/umem.c
@@ -34,7 +34,7 @@
  *			 - set initialised bit then.
  */
 
-//#define DEBUG /* uncomment if you want debugging info (pr_debug) */
+#undef DEBUG	/* #define DEBUG if you want debugging info (pr_debug) */
 #include <linux/fs.h>
 #include <linux/bio.h>
 #include <linux/kernel.h>
@@ -143,17 +143,12 @@ static struct cardinfo cards[MM_MAXCARDS];
 static struct block_device_operations mm_fops;
 static struct timer_list battery_timer;
 
-static int num_cards = 0;
+static int num_cards;
 
 static struct gendisk *mm_gendisk[MM_MAXCARDS];
 
 static void check_batteries(struct cardinfo *card);
 
-/*
------------------------------------------------------------------------------------
---                           get_userbit
------------------------------------------------------------------------------------
-*/
 static int get_userbit(struct cardinfo *card, int bit)
 {
 	unsigned char led;
@@ -161,11 +156,7 @@ static int get_userbit(struct cardinfo *card, int bit)
 	led = readb(card->csr_remap + MEMCTRLCMD_LEDCTRL);
 	return led & bit;
 }
-/*
------------------------------------------------------------------------------------
---                            set_userbit
------------------------------------------------------------------------------------
-*/
+
 static int set_userbit(struct cardinfo *card, int bit, unsigned char state)
 {
 	unsigned char led;
@@ -179,11 +170,7 @@ static int set_userbit(struct cardinfo *card, int bit, unsigned char state)
 
 	return 0;
 }
-/*
------------------------------------------------------------------------------------
---                             set_led
------------------------------------------------------------------------------------
-*/
+
 /*
  * NOTE: For the power LED, use the LED_POWER_* macros since they differ
  */
@@ -203,11 +190,6 @@ static void set_led(struct cardinfo *card, int shift, unsigned char state)
 }
 
 #ifdef MM_DIAG
-/*
------------------------------------------------------------------------------------
---                              dump_regs
------------------------------------------------------------------------------------
-*/
 static void dump_regs(struct cardinfo *card)
 {
 	unsigned char *p;
@@ -224,32 +206,28 @@ static void dump_regs(struct cardinfo *card)
 	}
 }
 #endif
-/*
------------------------------------------------------------------------------------
---                            dump_dmastat
------------------------------------------------------------------------------------
-*/
+
 static void dump_dmastat(struct cardinfo *card, unsigned int dmastat)
 {
 	dev_printk(KERN_DEBUG, &card->dev->dev, "DMAstat - ");
 	if (dmastat & DMASCR_ANY_ERR)
-		printk("ANY_ERR ");
+		printk(KERN_CONT "ANY_ERR ");
 	if (dmastat & DMASCR_MBE_ERR)
-		printk("MBE_ERR ");
+		printk(KERN_CONT "MBE_ERR ");
 	if (dmastat & DMASCR_PARITY_ERR_REP)
-		printk("PARITY_ERR_REP ");
+		printk(KERN_CONT "PARITY_ERR_REP ");
 	if (dmastat & DMASCR_PARITY_ERR_DET)
-		printk("PARITY_ERR_DET ");
+		printk(KERN_CONT "PARITY_ERR_DET ");
 	if (dmastat & DMASCR_SYSTEM_ERR_SIG)
-		printk("SYSTEM_ERR_SIG ");
+		printk(KERN_CONT "SYSTEM_ERR_SIG ");
 	if (dmastat & DMASCR_TARGET_ABT)
-		printk("TARGET_ABT ");
+		printk(KERN_CONT "TARGET_ABT ");
 	if (dmastat & DMASCR_MASTER_ABT)
-		printk("MASTER_ABT ");
+		printk(KERN_CONT "MASTER_ABT ");
 	if (dmastat & DMASCR_CHAIN_COMPLETE)
-		printk("CHAIN_COMPLETE ");
+		printk(KERN_CONT "CHAIN_COMPLETE ");
 	if (dmastat & DMASCR_DMA_COMPLETE)
-		printk("DMA_COMPLETE ");
+		printk(KERN_CONT "DMA_COMPLETE ");
 	printk("\n");
 }
 
@@ -286,7 +264,8 @@ static void mm_start_io(struct cardinfo *card)
 
 	/* make the last descriptor end the chain */
 	page = &card->mm_pages[card->Active];
-	pr_debug("start_io: %d %d->%d\n", card->Active, page->headcnt, page->cnt-1);
+	pr_debug("start_io: %d %d->%d\n",
+		card->Active, page->headcnt, page->cnt - 1);
 	desc = &page->desc[page->cnt-1];
 
 	desc->control_bits |= cpu_to_le32(DMASCR_CHAIN_COMP_EN);
@@ -310,8 +289,8 @@ static void mm_start_io(struct cardinfo *card)
 	writel(0, card->csr_remap + DMA_SEMAPHORE_ADDR);
 	writel(0, card->csr_remap + DMA_SEMAPHORE_ADDR + 4);
 
-	offset = ((char*)desc) - ((char*)page->desc);
-	writel(cpu_to_le32((page->page_dma+offset)&0xffffffff),
+	offset = ((char *)desc) - ((char *)page->desc);
+	writel(cpu_to_le32((page->page_dma+offset) & 0xffffffff),
 	       card->csr_remap + DMA_DESCRIPTOR_ADDR);
 	/* Force the value to u64 before shifting otherwise >> 32 is undefined C
 	 * and on some ports will do nothing ! */
@@ -352,7 +331,7 @@ static inline void reset_page(struct mm_page *page)
 	page->cnt = 0;
 	page->headcnt = 0;
 	page->bio = NULL;
-	page->biotail = & page->bio;
+	page->biotail = &page->bio;
 }
 
 static void mm_unplug_device(struct request_queue *q)
@@ -408,7 +387,7 @@ static int add_bio(struct cardinfo *card)
 				  vec->bv_page,
 				  vec->bv_offset,
 				  len,
-				  (rw==READ) ?
+				  (rw == READ) ?
 				  PCI_DMA_FROMDEVICE : PCI_DMA_TODEVICE);
 
 	p = &card->mm_pages[card->Ready];
@@ -427,10 +406,10 @@ static int add_bio(struct cardinfo *card)
 	desc->pci_addr = cpu_to_le64((u64)desc->data_dma_handle);
 	desc->local_addr = cpu_to_le64(card->current_sector << 9);
 	desc->transfer_size = cpu_to_le32(len);
-	offset = ( ((char*)&desc->sem_control_bits) - ((char*)p->desc));
+	offset = (((char *)&desc->sem_control_bits) - ((char *)p->desc));
 	desc->sem_addr = cpu_to_le64((u64)(p->page_dma+offset));
 	desc->zero1 = desc->zero2 = 0;
-	offset = ( ((char*)(desc+1)) - ((char*)p->desc));
+	offset = (((char *)(desc+1)) - ((char *)p->desc));
 	desc->next_desc_addr = cpu_to_le64(p->page_dma+offset);
 	desc->control_bits = cpu_to_le32(DMASCR_GO|DMASCR_ERR_INT_EN|
 					 DMASCR_PARITY_INT_EN|
@@ -455,11 +434,11 @@ static void process_page(unsigned long data)
 	/* check if any of the requests in the page are DMA_COMPLETE,
 	 * and deal with them appropriately.
 	 * If we find a descriptor without DMA_COMPLETE in the semaphore, then
-	 * dma must have hit an error on that descriptor, so use dma_status instead
-	 * and assume that all following descriptors must be re-tried.
+	 * dma must have hit an error on that descriptor, so use dma_status
+	 * instead and assume that all following descriptors must be re-tried.
 	 */
 	struct mm_page *page;
-	struct bio *return_bio=NULL;
+	struct bio *return_bio = NULL;
 	struct cardinfo *card = (struct cardinfo *)data;
 	unsigned int dma_status = card->dma_status;
 
@@ -472,12 +451,12 @@ static void process_page(unsigned long data)
 		struct bio *bio = page->bio;
 		struct mm_dma_desc *desc = &page->desc[page->headcnt];
 		int control = le32_to_cpu(desc->sem_control_bits);
-		int last=0;
+		int last = 0;
 		int idx;
 
 		if (!(control & DMASCR_DMA_COMPLETE)) {
 			control = dma_status;
-			last=1;
+			last = 1;
 		}
 		page->headcnt++;
 		idx = page->idx;
@@ -489,8 +468,8 @@ static void process_page(unsigned long data)
 		}
 
 		pci_unmap_page(card->dev, desc->data_dma_handle,
-			       bio_iovec_idx(bio,idx)->bv_len,
-				 (control& DMASCR_TRANSFER_READ) ?
+			       bio_iovec_idx(bio, idx)->bv_len,
+				 (control & DMASCR_TRANSFER_READ) ?
 				PCI_DMA_TODEVICE : PCI_DMA_FROMDEVICE);
 		if (control & DMASCR_HARD_ERROR) {
 			/* error */
@@ -501,9 +480,10 @@ static void process_page(unsigned long data)
 				le32_to_cpu(desc->transfer_size));
 			dump_dmastat(card, control);
 		} else if (test_bit(BIO_RW, &bio->bi_rw) &&
-			   le32_to_cpu(desc->local_addr)>>9 == card->init_size) {
-			card->init_size += le32_to_cpu(desc->transfer_size)>>9;
-			if (card->init_size>>1 >= card->mm_size) {
+			   le32_to_cpu(desc->local_addr) >> 9 ==
+				card->init_size) {
+			card->init_size += le32_to_cpu(desc->transfer_size) >> 9;
+			if (card->init_size >> 1 >= card->mm_size) {
 				dev_printk(KERN_INFO, &card->dev->dev,
 					"memory now initialised\n");
 				set_userbit(card, MEMORY_INITIALIZED, 1);
@@ -514,7 +494,8 @@ static void process_page(unsigned long data)
 			return_bio = bio;
 		}
 
-		if (last) break;
+		if (last)
+			break;
 	}
 
 	if (debug & DEBUG_LED_ON_TRANSFER)
@@ -536,7 +517,7 @@ static void process_page(unsigned long data)
  out_unlock:
 	spin_unlock_bh(&card->lock);
 
-	while(return_bio) {
+	while (return_bio) {
 		struct bio *bio = return_bio;
 
 		return_bio = bio->bi_next;
@@ -545,11 +526,6 @@ static void process_page(unsigned long data)
 	}
 }
 
-/*
------------------------------------------------------------------------------------
---                              mm_make_request
------------------------------------------------------------------------------------
-*/
 static int mm_make_request(struct request_queue *q, struct bio *bio)
 {
 	struct cardinfo *card = q->queuedata;
@@ -566,11 +542,6 @@ static int mm_make_request(struct request_queue *q, struct bio *bio)
 	return 0;
 }
 
-/*
------------------------------------------------------------------------------------
---                              mm_interrupt
------------------------------------------------------------------------------------
-*/
 static irqreturn_t mm_interrupt(int irq, void *__card)
 {
 	struct cardinfo *card = (struct cardinfo *) __card;
@@ -584,15 +555,15 @@ HW_TRACE(0x30);
 	if (!(dma_status & (DMASCR_ERROR_MASK | DMASCR_CHAIN_COMPLETE))) {
 		/* interrupt wasn't for me ... */
 		return IRQ_NONE;
-        }
+	}
 
 	/* clear COMPLETION interrupts */
 	if (card->flags & UM_FLAG_NO_BYTE_STATUS)
 		writel(cpu_to_le32(DMASCR_DMA_COMPLETE|DMASCR_CHAIN_COMPLETE),
-		       card->csr_remap+ DMA_STATUS_CTRL);
+		       card->csr_remap + DMA_STATUS_CTRL);
 	else
 		writeb((DMASCR_DMA_COMPLETE|DMASCR_CHAIN_COMPLETE) >> 16,
-		       card->csr_remap+ DMA_STATUS_CTRL + 2);
+		       card->csr_remap + DMA_STATUS_CTRL + 2);
 
 	/* log errors and clear interrupt status */
 	if (dma_status & DMASCR_ANY_ERR) {
@@ -602,9 +573,12 @@ HW_TRACE(0x30);
 
 		stat = readb(card->csr_remap + MEMCTRLCMD_ERRSTATUS);
 
-		data_log1 = le32_to_cpu(readl(card->csr_remap + ERROR_DATA_LOG));
-		data_log2 = le32_to_cpu(readl(card->csr_remap + ERROR_DATA_LOG + 4));
-		addr_log1 = le32_to_cpu(readl(card->csr_remap + ERROR_ADDR_LOG));
+		data_log1 = le32_to_cpu(readl(card->csr_remap +
+						ERROR_DATA_LOG));
+		data_log2 = le32_to_cpu(readl(card->csr_remap +
+						ERROR_DATA_LOG + 4));
+		addr_log1 = le32_to_cpu(readl(card->csr_remap +
+						ERROR_ADDR_LOG));
 		addr_log2 = readb(card->csr_remap + ERROR_ADDR_LOG + 4);
 
 		count = readb(card->csr_remap + ERROR_COUNT);
@@ -671,11 +645,7 @@ HW_TRACE(0x36);
 
 	return IRQ_HANDLED;
 }
-/*
------------------------------------------------------------------------------------
---                         set_fault_to_battery_status
------------------------------------------------------------------------------------
-*/
+
 /*
  * If both batteries are good, no LED
  * If either battery has been warned, solid LED
@@ -696,12 +666,6 @@ static void set_fault_to_battery_status(struct cardinfo *card)
 
 static void init_battery_timer(void);
 
-
-/*
------------------------------------------------------------------------------------
---                            check_battery
------------------------------------------------------------------------------------
-*/
 static int check_battery(struct cardinfo *card, int battery, int status)
 {
 	if (status != card->battery[battery].good) {
@@ -730,11 +694,7 @@ static int check_battery(struct cardinfo *card, int battery, int status)
 
 	return 0;
 }
-/*
------------------------------------------------------------------------------------
---                              check_batteries
------------------------------------------------------------------------------------
-*/
+
 static void check_batteries(struct cardinfo *card)
 {
 	/* NOTE: this must *never* be called while the card
@@ -775,11 +735,7 @@ static void check_all_batteries(unsigned long ptr)
 
 	init_battery_timer();
 }
-/*
------------------------------------------------------------------------------------
---                            init_battery_timer
------------------------------------------------------------------------------------
-*/
+
 static void init_battery_timer(void)
 {
 	init_timer(&battery_timer);
@@ -787,20 +743,12 @@ static void init_battery_timer(void)
 	battery_timer.expires = jiffies + (HZ * 60);
 	add_timer(&battery_timer);
 }
-/*
------------------------------------------------------------------------------------
---                              del_battery_timer
------------------------------------------------------------------------------------
-*/
+
 static void del_battery_timer(void)
 {
 	del_timer(&battery_timer);
 }
-/*
------------------------------------------------------------------------------------
---                                mm_revalidate
------------------------------------------------------------------------------------
-*/
+
 /*
  * Note no locks taken out here.  In a worst case scenario, we could drop
  * a chunk of system memory.  But that should never happen, since validation
@@ -833,33 +781,23 @@ static int mm_getgeo(struct block_device *bdev, struct hd_geometry *geo)
 }
 
 /*
------------------------------------------------------------------------------------
---                                mm_check_change
------------------------------------------------------------------------------------
-  Future support for removable devices
-*/
+ * Future support for removable devices
+ */
 static int mm_check_change(struct gendisk *disk)
 {
 /*  struct cardinfo *dev = disk->private_data; */
 	return 0;
 }
-/*
------------------------------------------------------------------------------------
---                             mm_fops
------------------------------------------------------------------------------------
-*/
+
 static struct block_device_operations mm_fops = {
 	.owner		= THIS_MODULE,
 	.getgeo		= mm_getgeo,
-	.revalidate_disk= mm_revalidate,
+	.revalidate_disk = mm_revalidate,
 	.media_changed	= mm_check_change,
 };
-/*
------------------------------------------------------------------------------------
---                                mm_pci_probe
------------------------------------------------------------------------------------
-*/
-static int __devinit mm_pci_probe(struct pci_dev *dev, const struct pci_device_id *id)
+
+static int __devinit mm_pci_probe(struct pci_dev *dev,
+				const struct pci_device_id *id)
 {
 	int ret = -ENODEV;
 	struct cardinfo *card = &cards[num_cards];
@@ -889,7 +827,7 @@ static int __devinit mm_pci_probe(struct pci_dev *dev, const struct pci_device_i
 		return -ENODEV;
 
 	dev_printk(KERN_INFO, &dev->dev,
-		"Micro Memory(tm) controller found (PCI Mem Module (Battery Backup))\n");
+	  "Micro Memory(tm) controller found (PCI Mem Module (Battery Backup))\n");
 
 	if (pci_set_dma_mask(dev, DMA_64BIT_MASK) &&
 	    pci_set_dma_mask(dev, DMA_32BIT_MASK)) {
@@ -917,7 +855,7 @@ static int __devinit mm_pci_probe(struct pci_dev *dev, const struct pci_device_i
 		"CSR 0x%08lx -> 0x%p (0x%lx)\n",
 	       csr_base, card->csr_remap, csr_len);
 
-	switch(card->dev->device) {
+	switch (card->dev->device) {
 	case 0x5415:
 		card->flags |= UM_FLAG_NO_BYTE_STATUS | UM_FLAG_NO_BATTREG;
 		magic_number = 0x59;
@@ -929,7 +867,8 @@ static int __devinit mm_pci_probe(struct pci_dev *dev, const struct pci_device_i
 		break;
 
 	case 0x6155:
-		card->flags |= UM_FLAG_NO_BYTE_STATUS | UM_FLAG_NO_BATTREG | UM_FLAG_NO_BATT;
+		card->flags |= UM_FLAG_NO_BYTE_STATUS |
+				UM_FLAG_NO_BATTREG | UM_FLAG_NO_BATT;
 		magic_number = 0x99;
 		break;
 
@@ -945,11 +884,11 @@ static int __devinit mm_pci_probe(struct pci_dev *dev, const struct pci_device_i
 	}
 
 	card->mm_pages[0].desc = pci_alloc_consistent(card->dev,
-						      PAGE_SIZE*2,
-						      &card->mm_pages[0].page_dma);
+						PAGE_SIZE * 2,
+						&card->mm_pages[0].page_dma);
 	card->mm_pages[1].desc = pci_alloc_consistent(card->dev,
-						      PAGE_SIZE*2,
-						      &card->mm_pages[1].page_dma);
+						PAGE_SIZE * 2,
+						&card->mm_pages[1].page_dma);
 	if (card->mm_pages[0].desc == NULL ||
 	    card->mm_pages[1].desc == NULL) {
 		dev_printk(KERN_ERR, &card->dev->dev, "alloc failed\n");
@@ -1013,9 +952,9 @@ static int __devinit mm_pci_probe(struct pci_dev *dev, const struct pci_device_i
 		dev_printk(KERN_INFO, &card->dev->dev,
 			"Size %d KB, Battery 1 %s (%s), Battery 2 %s (%s)\n",
 		       card->mm_size,
-		       (batt_status & BATTERY_1_DISABLED ? "Disabled" : "Enabled"),
+		       batt_status & BATTERY_1_DISABLED ? "Disabled" : "Enabled",
 		       card->battery[0].good ? "OK" : "FAILURE",
-		       (batt_status & BATTERY_2_DISABLED ? "Disabled" : "Enabled"),
+		       batt_status & BATTERY_2_DISABLED ? "Disabled" : "Enabled",
 		       card->battery[1].good ? "OK" : "FAILURE");
 
 		set_fault_to_battery_status(card);
@@ -1030,18 +969,18 @@ static int __devinit mm_pci_probe(struct pci_dev *dev, const struct pci_device_i
 	data = ~data;
 	data += 1;
 
-	if (request_irq(dev->irq, mm_interrupt, IRQF_SHARED, DRIVER_NAME, card)) {
+	if (request_irq(dev->irq, mm_interrupt, IRQF_SHARED, DRIVER_NAME,
+			card)) {
 		dev_printk(KERN_ERR, &card->dev->dev,
 			"Unable to allocate IRQ\n");
 		ret = -ENODEV;
-
 		goto failed_req_irq;
 	}
 
 	dev_printk(KERN_INFO, &card->dev->dev,
 		"Window size %d bytes, IRQ %d\n", data, dev->irq);
 
-        spin_lock_init(&card->lock);
+	spin_lock_init(&card->lock);
 
 	pci_set_drvdata(dev, card);
 
@@ -1060,7 +999,7 @@ static int __devinit mm_pci_probe(struct pci_dev *dev, const struct pci_device_i
 
 	if (!get_userbit(card, MEMORY_INITIALIZED)) {
 		dev_printk(KERN_INFO, &card->dev->dev,
-			"memory NOT initialized. Consider over-writing whole device.\n");
+		  "memory NOT initialized. Consider over-writing whole device.\n");
 		card->init_size = 0;
 	} else {
 		dev_printk(KERN_INFO, &card->dev->dev,
@@ -1091,11 +1030,7 @@ static int __devinit mm_pci_probe(struct pci_dev *dev, const struct pci_device_i
 
 	return ret;
 }
-/*
------------------------------------------------------------------------------------
---                              mm_pci_remove
------------------------------------------------------------------------------------
-*/
+
 static void mm_pci_remove(struct pci_dev *dev)
 {
 	struct cardinfo *card = pci_get_drvdata(dev);
@@ -1119,16 +1054,16 @@ static void mm_pci_remove(struct pci_dev *dev)
 }
 
 static const struct pci_device_id mm_pci_ids[] = {
-    {PCI_DEVICE(PCI_VENDOR_ID_MICRO_MEMORY,PCI_DEVICE_ID_MICRO_MEMORY_5415CN)},
-    {PCI_DEVICE(PCI_VENDOR_ID_MICRO_MEMORY,PCI_DEVICE_ID_MICRO_MEMORY_5425CN)},
-    {PCI_DEVICE(PCI_VENDOR_ID_MICRO_MEMORY,PCI_DEVICE_ID_MICRO_MEMORY_6155)},
+    {PCI_DEVICE(PCI_VENDOR_ID_MICRO_MEMORY, PCI_DEVICE_ID_MICRO_MEMORY_5415CN)},
+    {PCI_DEVICE(PCI_VENDOR_ID_MICRO_MEMORY, PCI_DEVICE_ID_MICRO_MEMORY_5425CN)},
+    {PCI_DEVICE(PCI_VENDOR_ID_MICRO_MEMORY, PCI_DEVICE_ID_MICRO_MEMORY_6155)},
     {
 	.vendor	=	0x8086,
 	.device	=	0xB555,
-	.subvendor=	0x1332,
-	.subdevice=	0x5460,
-	.class	=	0x050000,
-	.class_mask=	0,
+	.subvendor =	0x1332,
+	.subdevice =	0x5460,
+	.class =	0x050000,
+	.class_mask =	0,
     }, { /* end: all zeroes */ }
 };
 
@@ -1141,12 +1076,6 @@ static struct pci_driver mm_pci_driver = {
 	.remove		= mm_pci_remove,
 };
 
-/*
------------------------------------------------------------------------------------
---                               mm_init
------------------------------------------------------------------------------------
-*/
-
 static int __init mm_init(void)
 {
 	int retval, i;
@@ -1193,18 +1122,14 @@ out:
 		put_disk(mm_gendisk[i]);
 	return -ENOMEM;
 }
-/*
------------------------------------------------------------------------------------
---                             mm_cleanup
------------------------------------------------------------------------------------
-*/
+
 static void __exit mm_cleanup(void)
 {
 	int i;
 
 	del_battery_timer();
 
-	for (i=0; i < num_cards ; i++) {
+	for (i = 0; i < num_cards ; i++) {
 		del_gendisk(mm_gendisk[i]);
 		put_disk(mm_gendisk[i]);
 	}