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Message-Id: <20071216131558.8e3d57e1.randy.dunlap@oracle.com>
Date: Sun, 16 Dec 2007 13:15:58 -0800
From: Randy Dunlap <randy.dunlap@...cle.com>
To: Ingo Molnar <mingo@...e.hu>, akpm <akpm@...ux-foundation.org>
Cc: Neil Brown <neilb@...e.de>, David Chinner <dgc@....com>,
lkml <linux-kernel@...r.kernel.org>
Subject: [PATCH] umem nvram driver: clean up style
On Tue, 4 Dec 2007 10:37:16 +0100 Ingo Molnar wrote:
> btw., if anyone feels so inclined, this file has quite a number of
> coding style issues, as per scripts/checkpatch.pl output:
>
> total: 28 errors, 54 warnings, 1221 lines checked
From: Randy Dunlap <randy.dunlap@...cle.com>
Cleanup umem driver: fix all checkpatch warnings, conform to kernel
coding style.
linux-2.6.24-rc5-git3> checkpatch.pl-next patches/block-umem-ckpatch.patch
total: 0 errors, 0 warnings, 546 lines checked
patches/block-umem-ckpatch.patch has no obvious style problems and is ready for submission.
Only change in generated object file is due to not initializing a
static global variable to 0.
Signed-off-by: Randy Dunlap <randy.dunlap@...cle.com>
---
drivers/block/umem.c | 249 ++++++++++++++++++-----------------------
1 file changed, 112 insertions(+), 137 deletions(-)
--- linux-2.6.24-rc5-git3.orig/drivers/block/umem.c
+++ linux-2.6.24-rc5-git3/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 +143,15 @@ 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
------------------------------------------------------------------------------------
-*/
+ * get_userbit
+ */
static int get_userbit(struct cardinfo *card, int bit)
{
unsigned char led;
@@ -162,10 +160,8 @@ static int get_userbit(struct cardinfo *
return led & bit;
}
/*
------------------------------------------------------------------------------------
--- set_userbit
------------------------------------------------------------------------------------
-*/
+ * set_userbit
+ */
static int set_userbit(struct cardinfo *card, int bit, unsigned char state)
{
unsigned char led;
@@ -180,10 +176,8 @@ static int set_userbit(struct cardinfo *
return 0;
}
/*
------------------------------------------------------------------------------------
--- set_led
------------------------------------------------------------------------------------
-*/
+ * set_led
+ */
/*
* NOTE: For the power LED, use the LED_POWER_* macros since they differ
*/
@@ -204,10 +198,8 @@ static void set_led(struct cardinfo *car
#ifdef MM_DIAG
/*
------------------------------------------------------------------------------------
--- dump_regs
------------------------------------------------------------------------------------
-*/
+ * dump_regs
+ */
static void dump_regs(struct cardinfo *card)
{
unsigned char *p;
@@ -225,31 +217,29 @@ static void dump_regs(struct cardinfo *c
}
#endif
/*
------------------------------------------------------------------------------------
--- dump_dmastat
------------------------------------------------------------------------------------
-*/
+ * 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 +276,8 @@ static void mm_start_io(struct cardinfo
/* 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 +301,8 @@ static void mm_start_io(struct cardinfo
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 +343,7 @@ static inline void reset_page(struct mm_
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 +399,7 @@ 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 +418,10 @@ 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 +446,11 @@ static void process_page(unsigned long d
/* 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 +463,12 @@ static void process_page(unsigned long d
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 +480,8 @@ static void process_page(unsigned long d
}
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 +492,11 @@ static void process_page(unsigned long d
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 +507,8 @@ static void process_page(unsigned long d
return_bio = bio;
}
- if (last) break;
+ if (last)
+ break;
}
if (debug & DEBUG_LED_ON_TRANSFER)
@@ -536,7 +530,7 @@ static void process_page(unsigned long d
out_unlock:
spin_unlock_bh(&card->lock);
- while(return_bio) {
+ while (return_bio) {
struct bio *bio = return_bio;
return_bio = bio->bi_next;
@@ -546,10 +540,8 @@ static void process_page(unsigned long d
}
/*
------------------------------------------------------------------------------------
--- mm_make_request
------------------------------------------------------------------------------------
-*/
+ * mm_make_request
+ */
static int mm_make_request(struct request_queue *q, struct bio *bio)
{
struct cardinfo *card = q->queuedata;
@@ -567,10 +559,8 @@ static int mm_make_request(struct reques
}
/*
------------------------------------------------------------------------------------
--- mm_interrupt
------------------------------------------------------------------------------------
-*/
+ * mm_interrupt
+ */
static irqreturn_t mm_interrupt(int irq, void *__card)
{
struct cardinfo *card = (struct cardinfo *) __card;
@@ -584,15 +574,15 @@ 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 +592,12 @@ 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);
@@ -672,10 +665,8 @@ HW_TRACE(0x36);
return IRQ_HANDLED;
}
/*
------------------------------------------------------------------------------------
--- set_fault_to_battery_status
------------------------------------------------------------------------------------
-*/
+ * set_fault_to_battery_status
+ */
/*
* If both batteries are good, no LED
* If either battery has been warned, solid LED
@@ -698,10 +689,8 @@ static void init_battery_timer(void);
/*
------------------------------------------------------------------------------------
--- check_battery
------------------------------------------------------------------------------------
-*/
+ * check_battery
+ */
static int check_battery(struct cardinfo *card, int battery, int status)
{
if (status != card->battery[battery].good) {
@@ -731,10 +720,8 @@ static int check_battery(struct cardinfo
return 0;
}
/*
------------------------------------------------------------------------------------
--- check_batteries
------------------------------------------------------------------------------------
-*/
+ * check_batteries
+ */
static void check_batteries(struct cardinfo *card)
{
/* NOTE: this must *never* be called while the card
@@ -776,10 +763,8 @@ static void check_all_batteries(unsigned
init_battery_timer();
}
/*
------------------------------------------------------------------------------------
--- init_battery_timer
------------------------------------------------------------------------------------
-*/
+ * init_battery_timer
+ */
static void init_battery_timer(void)
{
init_timer(&battery_timer);
@@ -788,19 +773,15 @@ static void init_battery_timer(void)
add_timer(&battery_timer);
}
/*
------------------------------------------------------------------------------------
--- del_battery_timer
------------------------------------------------------------------------------------
-*/
+ * del_battery_timer
+ */
static void del_battery_timer(void)
{
del_timer(&battery_timer);
}
/*
------------------------------------------------------------------------------------
--- mm_revalidate
------------------------------------------------------------------------------------
-*/
+ * 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 +814,29 @@ static int mm_getgeo(struct block_device
}
/*
------------------------------------------------------------------------------------
--- mm_check_change
------------------------------------------------------------------------------------
- Future support for removable devices
-*/
+ * mm_check_change
+ *
+ * Future support for removable devices
+ */
static int mm_check_change(struct gendisk *disk)
{
/* struct cardinfo *dev = disk->private_data; */
return 0;
}
/*
------------------------------------------------------------------------------------
--- mm_fops
------------------------------------------------------------------------------------
-*/
+ * 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)
+ * mm_pci_probe
+ */
+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 +866,8 @@ static int __devinit mm_pci_probe(struct
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 +895,7 @@ static int __devinit mm_pci_probe(struct
"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 +907,8 @@ static int __devinit mm_pci_probe(struct
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 +924,11 @@ static int __devinit mm_pci_probe(struct
}
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 +992,11 @@ static int __devinit mm_pci_probe(struct
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 +1011,18 @@ static int __devinit mm_pci_probe(struct
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 +1041,8 @@ static int __devinit mm_pci_probe(struct
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,
@@ -1092,10 +1074,8 @@ static int __devinit mm_pci_probe(struct
return ret;
}
/*
------------------------------------------------------------------------------------
--- mm_pci_remove
------------------------------------------------------------------------------------
-*/
+ * mm_pci_remove
+ */
static void mm_pci_remove(struct pci_dev *dev)
{
struct cardinfo *card = pci_get_drvdata(dev);
@@ -1119,16 +1099,16 @@ static void mm_pci_remove(struct pci_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 */ }
};
@@ -1142,11 +1122,8 @@ static struct pci_driver mm_pci_driver =
};
/*
------------------------------------------------------------------------------------
--- mm_init
------------------------------------------------------------------------------------
-*/
-
+ * mm_init
+ */
static int __init mm_init(void)
{
int retval, i;
@@ -1194,17 +1171,15 @@ out:
return -ENOMEM;
}
/*
------------------------------------------------------------------------------------
--- mm_cleanup
------------------------------------------------------------------------------------
-*/
+ * 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]);
}
--
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