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ptp_pch: eliminate a number of sparse warnings 

This fixes a number of sparse warnings like:
  warning: incorrect type in argument 2 (different address spaces)
    expected void volatile [noderef] <asn:2>*addr
    got unsigned int *<noident>

  warning: Using plain integer as NULL pointer

Additionally this fixes a warning from checkpatch.pl like:
  WARNING: sizeof pch_param.station should be sizeof(pch_param.station)

Signed-off-by: Sahara <keun-o.park@windriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Sahara 2013-03-26 19:07:23 +00:00 коммит произвёл David S. Miller
Родитель 6bdeaba47d
Коммит 7d3ac5c779
1 изменённых файлов: 14 добавлений и 13 удалений
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27
drivers/ptp/ptp_pch.c
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@ -118,7 +118,7 @@ struct pch_ts_regs {
* struct pch_dev - Driver private data
*/
struct pch_dev {
struct pch_ts_regs *regs;
struct pch_ts_regs __iomem *regs;
struct ptp_clock *ptp_clock;
struct ptp_clock_info caps;
int exts0_enabled;
@ -154,7 +154,7 @@ static inline void pch_eth_enable_set(struct pch_dev *chip)
iowrite32(val, (&chip->regs->ts_sel));
}
static u64 pch_systime_read(struct pch_ts_regs *regs)
static u64 pch_systime_read(struct pch_ts_regs __iomem *regs)
{
u64 ns;
u32 lo, hi;
@ -169,7 +169,7 @@ static u64 pch_systime_read(struct pch_ts_regs *regs)
return ns;
}
static void pch_systime_write(struct pch_ts_regs *regs, u64 ns)
static void pch_systime_write(struct pch_ts_regs __iomem *regs, u64 ns)
{
u32 hi, lo;
@ -315,7 +315,7 @@ int pch_set_station_address(u8 *addr, struct pci_dev *pdev)
struct pch_dev *chip = pci_get_drvdata(pdev);
/* Verify the parameter */
if ((chip->regs == 0) || addr == (u8 *)NULL) {
if ((chip->regs == NULL) || addr == (u8 *)NULL) {
dev_err(&pdev->dev,
"invalid params returning PCH_INVALIDPARAM\n");
return PCH_INVALIDPARAM;
@ -361,7 +361,7 @@ EXPORT_SYMBOL(pch_set_station_address);
static irqreturn_t isr(int irq, void *priv)
{
struct pch_dev *pch_dev = priv;
struct pch_ts_regs *regs = pch_dev->regs;
struct pch_ts_regs __iomem *regs = pch_dev->regs;
struct ptp_clock_event event;
u32 ack = 0, lo, hi, val;
@ -415,7 +415,7 @@ static int ptp_pch_adjfreq(struct ptp_clock_info *ptp, s32 ppb)
u32 diff, addend;
int neg_adj = 0;
struct pch_dev *pch_dev = container_of(ptp, struct pch_dev, caps);
struct pch_ts_regs *regs = pch_dev->regs;
struct pch_ts_regs __iomem *regs = pch_dev->regs;
if (ppb < 0) {
neg_adj = 1;
@ -438,7 +438,7 @@ static int ptp_pch_adjtime(struct ptp_clock_info *ptp, s64 delta)
s64 now;
unsigned long flags;
struct pch_dev *pch_dev = container_of(ptp, struct pch_dev, caps);
struct pch_ts_regs *regs = pch_dev->regs;
struct pch_ts_regs __iomem *regs = pch_dev->regs;
spin_lock_irqsave(&pch_dev->register_lock, flags);
now = pch_systime_read(regs);
@ -455,7 +455,7 @@ static int ptp_pch_gettime(struct ptp_clock_info *ptp, struct timespec *ts)
u32 remainder;
unsigned long flags;
struct pch_dev *pch_dev = container_of(ptp, struct pch_dev, caps);
struct pch_ts_regs *regs = pch_dev->regs;
struct pch_ts_regs __iomem *regs = pch_dev->regs;
spin_lock_irqsave(&pch_dev->register_lock, flags);
ns = pch_systime_read(regs);
@ -472,7 +472,7 @@ static int ptp_pch_settime(struct ptp_clock_info *ptp,
u64 ns;
unsigned long flags;
struct pch_dev *pch_dev = container_of(ptp, struct pch_dev, caps);
struct pch_ts_regs *regs = pch_dev->regs;
struct pch_ts_regs __iomem *regs = pch_dev->regs;
ns = ts->tv_sec * 1000000000ULL;
ns += ts->tv_nsec;
@ -567,9 +567,9 @@ static void pch_remove(struct pci_dev *pdev)
free_irq(pdev->irq, chip);
/* unmap the virtual IO memory space */
if (chip->regs != 0) {
if (chip->regs != NULL) {
iounmap(chip->regs);
chip->regs = 0;
chip->regs = NULL;
}
/* release the reserved IO memory space */
if (chip->mem_base != 0) {
@ -670,7 +670,7 @@ pch_probe(struct pci_dev *pdev, const struct pci_device_id *id)
err_req_irq:
ptp_clock_unregister(chip->ptp_clock);
iounmap(chip->regs);
chip->regs = 0;
chip->regs = NULL;
err_ioremap:
release_mem_region(chip->mem_base, chip->mem_size);
@ -723,7 +723,8 @@ static s32 __init ptp_pch_init(void)
module_init(ptp_pch_init);
module_exit(ptp_pch_exit);
module_param_string(station, pch_param.station, sizeof pch_param.station, 0444);
module_param_string(station,
pch_param.station, sizeof(pch_param.station), 0444);
MODULE_PARM_DESC(station,
"IEEE 1588 station address to use - colon separated hex values");