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Commit c9b8015b authored by Erik Andrén's avatar Erik Andrén Committed by Greg Kroah-Hartman
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Staging: altpciechdma: checkpatch fixups 

Signed-off-by: default avatarErik Andrén <erik.andren@gmail.com>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@suse.de>
parent 2c77cb3e
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Showing with 31 additions and 33 deletions
drivers/staging/altpciechdma/altpciechdma.c
View file @ c9b8015b
......@@ -312,15 +312,16 @@ static int __devinit map_bars(struct ape_dev *ape, struct pci_dev *dev)
continue;
/* do not map BARs with address 0 */
if (!bar_start || !bar_end) {
printk(KERN_DEBUG "BAR #%d is not present?!\n", i);
printk(KERN_DEBUG "BAR #%d is not present?!\n", i);
rc = -1;
goto fail;
}
bar_length = bar_end - bar_start + 1;
/* BAR length is less than driver requires? */
if (bar_length < bar_min_len[i]) {
printk(KERN_DEBUG "BAR #%d length = %lu bytes but driver "
"requires at least %lu bytes\n", i, bar_length, bar_min_len[i]);
printk(KERN_DEBUG "BAR #%d length = %lu bytes but driver "
"requires at least %lu bytes\n",
i, bar_length, bar_min_len[i]);
rc = -1;
goto fail;
}
......@@ -332,8 +333,8 @@ static int __devinit map_bars(struct ape_dev *ape, struct pci_dev *dev)
rc = -1;
goto fail;
}
printk(KERN_DEBUG "BAR[%d] mapped at 0x%p with length %lu(/%lu).\n", i,
ape->bar[i], bar_min_len[i], bar_length);
printk(KERN_DEBUG "BAR[%d] mapped at 0x%p with length %lu(/%lu).\n", i,
ape->bar[i], bar_min_len[i], bar_length);
}
/* succesfully mapped all required BAR regions */
rc = 0;
......@@ -466,15 +467,14 @@ static inline int compare(u32 *p, u32 *q, int len)
} else {
fail++;
/* show the first few miscompares */
if (fail < 10) {
printk(KERN_DEBUG "[%p] = 0x%08x != [%p] = 0x%08x ?!\n", p, *p, q, *q);
/* but stop after a while */
} else if (fail == 10) {
printk(KERN_DEBUG "---more errors follow! not printed---\n");
} else {
if (fail < 10)
printk(KERN_DEBUG "[%p] = 0x%08x != [%p] = 0x%08x ?!\n", p, *p, q, *q);
/* but stop after a while */
else if (fail == 10)
printk(KERN_DEBUG "---more errors follow! not printed---\n");
else
/* stop compare after this many errors */
break;
}
break;
}
p++;
q++;
......@@ -527,7 +527,7 @@ static int __devinit dma_test(struct ape_dev *ape, struct pci_dev *dev)
printk(KERN_DEBUG "ape->table_virt = 0x%p.\n", ape->table_virt);
if (!write_header || !read_header || !ape->table_virt)
goto fail;
goto fail;
/* allocate and map coherently-cached memory for a DMA-able buffer */
/* @see Documentation/PCI/PCI-DMA-mapping.txt, near line 318 */
......@@ -564,9 +564,8 @@ static int __devinit dma_test(struct ape_dev *ape, struct pci_dev *dev)
/* read 8192 bytes from RC buffer to EP address 4096 */
ape_chdma_desc_set(&ape->table_virt->desc[n], buffer_bus, 4096, 2 * PAGE_SIZE);
#if 1
for (i = 0; i < 255; i++) {
for (i = 0; i < 255; i++)
ape_chdma_desc_set(&ape->table_virt->desc[i], buffer_bus, 4096, 2 * PAGE_SIZE);
}
/* index of last descriptor */
n = i - 1;
#endif
......@@ -646,7 +645,7 @@ static int __devinit dma_test(struct ape_dev *ape, struct pci_dev *dev)
printk(KERN_DEBUG "EPLAST = %u, n = %d\n", eplast, n);
if (eplast == n) {
printk(KERN_DEBUG "DONE\n");
/* print IRQ count before the transfer */
/* print IRQ count before the transfer */
printk(KERN_DEBUG "#IRQs during transfer: %d\n", ape->irq_count - irq_count);
break;
}
......@@ -660,9 +659,9 @@ static int __devinit dma_test(struct ape_dev *ape, struct pci_dev *dev)
n = 0;
ape_chdma_desc_set(&ape->table_virt->desc[n], buffer_bus + 8192, 4096, 2 * PAGE_SIZE);
#if 1
for (i = 0; i < 255; i++) {
for (i = 0; i < 255; i++)
ape_chdma_desc_set(&ape->table_virt->desc[i], buffer_bus + 8192, 4096, 2 * PAGE_SIZE);
}
/* index of last descriptor */
n = i - 1;
#endif
......@@ -690,7 +689,7 @@ static int __devinit dma_test(struct ape_dev *ape, struct pci_dev *dev)
w = (u32)(n + 1);
/* enable updates of eplast for each descriptor completion */
w |= (u32)(1UL << 18)/*global EPLAST_EN*/;
#if 0 // test variable, make a module option later
#if 0 /* test variable, make a module option later */
/* enable MSI for each descriptor completion */
if (ape->msi_enabled)
w |= (1UL << 17)/*global MSI*/;
......@@ -714,7 +713,7 @@ static int __devinit dma_test(struct ape_dev *ape, struct pci_dev *dev)
/** memory write barrier */
wmb();
/** dummy read to flush posted writes */
//(void)ioread32();
/* (void) ioread32(); */
printk(KERN_DEBUG "POLL FOR WRITE:\n");
/* poll for completion, 1000 times 1 millisecond */
......@@ -843,7 +842,7 @@ static int __devinit probe(struct pci_dev *dev, const struct pci_device_id *id)
}
ape->got_regions = 1;
#if 1 // @todo For now, disable 64-bit, because I do not understand the implications (DAC!)
#if 1 /* @todo For now, disable 64-bit, because I do not understand the implications (DAC!) */
/* query for DMA transfer */
/* @see Documentation/PCI/PCI-DMA-mapping.txt */
if (!pci_set_dma_mask(dev, DMA_64BIT_MASK)) {
......@@ -1048,10 +1047,9 @@ static ssize_t sg_write(struct file *file, const char __user *buf, size_t count,
printk(KERN_DEBUG DRV_NAME "_write(buf=0x%p, count=%lld, pos=%llu)\n",
buf, (s64)count, (u64)*pos);
/* TODO transfer boundaries at PAGE_SIZE granularity */
while (remaining > 0)
{
while (remaining > 0) {
/* limit DMA transfer size */
transfer_len = (remaining < APE_CHDMA_MAX_TRANSFER_LEN)? remaining:
transfer_len = (remaining < APE_CHDMA_MAX_TRANSFER_LEN) ? remaining :
APE_CHDMA_MAX_TRANSFER_LEN;
/* get all user space buffer pages and create a scattergather list */
sgm_map_user_pages(ape->sgm, transfer_addr, transfer_len, 0/*read from userspace*/);
......@@ -1085,12 +1083,12 @@ static ssize_t sg_write(struct file *file, const char __user *buf, size_t count,
/*
* character device file operations
*/
static struct file_operations sg_fops = {
.owner = THIS_MODULE,
.open = sg_open,
.release = sg_close,
.read = sg_read,
.write = sg_write,
static const struct file_operations sg_fops = {
.owner = THIS_MODULE,
.open = sg_open,
.release = sg_close,
.read = sg_read,
.write = sg_write,
};
/* sg_init() - Initialize character device
......@@ -1158,12 +1156,12 @@ static struct pci_driver pci_driver = {
*/
static int __init alterapciechdma_init(void)
{
int rc = 0;
int rc = 0;
printk(KERN_DEBUG DRV_NAME " init(), built at " __DATE__ " " __TIME__ "\n");
/* register this driver with the PCI bus driver */
rc = pci_register_driver(&pci_driver);
if (rc < 0)
return rc;
return rc;
return 0;
}
......
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