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atm nicstar: Removal of debug code containing deprecated calls to cli…
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…()/sti()

Code within NS_DEBUG_SPINLOCKS contained deprecated cli()/sti()
function calls.  NS_DEBUG_SPINLOCKS and the associated code seems to
be of little use these days so the strategy of removing this code
rather then updating it to use spinlocks has been taken.

Signed-off-by: Mark Asselstine <mark.asselstine@windriver.com>
Reviewed-by: Matthew Wilcox <willy@linux.intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Mark Asselstine authored and David S. Miller committed Apr 20, 2008
1 parent 344234d commit 36ef408
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Showing 2 changed files with 19 additions and 110 deletions.
117 changes: 19 additions & 98 deletions drivers/atm/nicstar.c
View file
Original file line number Diff line number Diff line change
Expand Up @@ -125,85 +125,6 @@
#define ATM_SKB(s) (&(s)->atm)
#endif

/* Spinlock debugging stuff */
#ifdef NS_DEBUG_SPINLOCKS /* See nicstar.h */
#define ns_grab_int_lock(card,flags) \
do { \
unsigned long nsdsf, nsdsf2; \
local_irq_save(flags); \
save_flags(nsdsf); cli();\
if (nsdsf & (1<<9)) printk ("nicstar.c: ints %sabled -> enabled.\n", \
(flags)&(1<<9)?"en":"dis"); \
if (spin_is_locked(&(card)->int_lock) && \
(card)->cpu_int == smp_processor_id()) { \
printk("nicstar.c: line %d (cpu %d) int_lock already locked at line %d (cpu %d)\n", \
__LINE__, smp_processor_id(), (card)->has_int_lock, \
(card)->cpu_int); \
printk("nicstar.c: ints were %sabled.\n", ((flags)&(1<<9)?"en":"dis")); \
} \
if (spin_is_locked(&(card)->res_lock) && \
(card)->cpu_res == smp_processor_id()) { \
printk("nicstar.c: line %d (cpu %d) res_lock locked at line %d (cpu %d)(trying int)\n", \
__LINE__, smp_processor_id(), (card)->has_res_lock, \
(card)->cpu_res); \
printk("nicstar.c: ints were %sabled.\n", ((flags)&(1<<9)?"en":"dis")); \
} \
spin_lock_irq(&(card)->int_lock); \
(card)->has_int_lock = __LINE__; \
(card)->cpu_int = smp_processor_id(); \
restore_flags(nsdsf); } while (0)
#define ns_grab_res_lock(card,flags) \
do { \
unsigned long nsdsf, nsdsf2; \
local_irq_save(flags); \
save_flags(nsdsf); cli();\
if (nsdsf & (1<<9)) printk ("nicstar.c: ints %sabled -> enabled.\n", \
(flags)&(1<<9)?"en":"dis"); \
if (spin_is_locked(&(card)->res_lock) && \
(card)->cpu_res == smp_processor_id()) { \
printk("nicstar.c: line %d (cpu %d) res_lock already locked at line %d (cpu %d)\n", \
__LINE__, smp_processor_id(), (card)->has_res_lock, \
(card)->cpu_res); \
printk("nicstar.c: ints were %sabled.\n", ((flags)&(1<<9)?"en":"dis")); \
} \
spin_lock_irq(&(card)->res_lock); \
(card)->has_res_lock = __LINE__; \
(card)->cpu_res = smp_processor_id(); \
restore_flags(nsdsf); } while (0)
#define ns_grab_scq_lock(card,scq,flags) \
do { \
unsigned long nsdsf, nsdsf2; \
local_irq_save(flags); \
save_flags(nsdsf); cli();\
if (nsdsf & (1<<9)) printk ("nicstar.c: ints %sabled -> enabled.\n", \
(flags)&(1<<9)?"en":"dis"); \
if (spin_is_locked(&(scq)->lock) && \
(scq)->cpu_lock == smp_processor_id()) { \
printk("nicstar.c: line %d (cpu %d) this scq_lock already locked at line %d (cpu %d)\n", \
__LINE__, smp_processor_id(), (scq)->has_lock, \
(scq)->cpu_lock); \
printk("nicstar.c: ints were %sabled.\n", ((flags)&(1<<9)?"en":"dis")); \
} \
if (spin_is_locked(&(card)->res_lock) && \
(card)->cpu_res == smp_processor_id()) { \
printk("nicstar.c: line %d (cpu %d) res_lock locked at line %d (cpu %d)(trying scq)\n", \
__LINE__, smp_processor_id(), (card)->has_res_lock, \
(card)->cpu_res); \
printk("nicstar.c: ints were %sabled.\n", ((flags)&(1<<9)?"en":"dis")); \
} \
spin_lock_irq(&(scq)->lock); \
(scq)->has_lock = __LINE__; \
(scq)->cpu_lock = smp_processor_id(); \
restore_flags(nsdsf); } while (0)
#else /* !NS_DEBUG_SPINLOCKS */
#define ns_grab_int_lock(card,flags) \
spin_lock_irqsave(&(card)->int_lock,(flags))
#define ns_grab_res_lock(card,flags) \
spin_lock_irqsave(&(card)->res_lock,(flags))
#define ns_grab_scq_lock(card,scq,flags) \
spin_lock_irqsave(&(scq)->lock,flags)
#endif /* NS_DEBUG_SPINLOCKS */


/* Function declarations ******************************************************/

Expand Down Expand Up @@ -422,7 +343,7 @@ static u32 ns_read_sram(ns_dev *card, u32 sram_address)
sram_address <<= 2;
sram_address &= 0x0007FFFC; /* address must be dword aligned */
sram_address |= 0x50000000; /* SRAM read command */
ns_grab_res_lock(card, flags);
spin_lock_irqsave(&card->res_lock, flags);
while (CMD_BUSY(card));
writel(sram_address, card->membase + CMD);
while (CMD_BUSY(card));
Expand All @@ -440,7 +361,7 @@ static void ns_write_sram(ns_dev *card, u32 sram_address, u32 *value, int count)
count--; /* count range now is 0..3 instead of 1..4 */
c = count;
c <<= 2; /* to use increments of 4 */
ns_grab_res_lock(card, flags);
spin_lock_irqsave(&card->res_lock, flags);
while (CMD_BUSY(card));
for (i = 0; i <= c; i += 4)
writel(*(value++), card->membase + i);
Expand Down Expand Up @@ -1166,7 +1087,7 @@ static void push_rxbufs(ns_dev *card, struct sk_buff *skb)
card->lbfqc += 2;
}

ns_grab_res_lock(card, flags);
spin_lock_irqsave(&card->res_lock, flags);

while (CMD_BUSY(card));
writel(addr2, card->membase + DR3);
Expand Down Expand Up @@ -1206,7 +1127,7 @@ static irqreturn_t ns_irq_handler(int irq, void *dev_id)

PRINTK("nicstar%d: NICStAR generated an interrupt\n", card->index);

ns_grab_int_lock(card, flags);
spin_lock_irqsave(&card->int_lock, flags);

stat_r = readl(card->membase + STAT);

Expand Down Expand Up @@ -1585,7 +1506,7 @@ static void ns_close(struct atm_vcc *vcc)
unsigned long flags;

addr = NS_RCT + (vcc->vpi << card->vcibits | vcc->vci) * NS_RCT_ENTRY_SIZE;
ns_grab_res_lock(card, flags);
spin_lock_irqsave(&card->res_lock, flags);
while(CMD_BUSY(card));
writel(NS_CMD_CLOSE_CONNECTION | addr << 2, card->membase + CMD);
spin_unlock_irqrestore(&card->res_lock, flags);
Expand All @@ -1607,7 +1528,7 @@ static void ns_close(struct atm_vcc *vcc)
NS_SKB(iovb)->iovcnt);
NS_SKB(iovb)->iovcnt = 0;
NS_SKB(iovb)->vcc = NULL;
ns_grab_int_lock(card, flags);
spin_lock_irqsave(&card->int_lock, flags);
recycle_iov_buf(card, iovb);
spin_unlock_irqrestore(&card->int_lock, flags);
vc->rx_iov = NULL;
Expand All @@ -1629,7 +1550,7 @@ static void ns_close(struct atm_vcc *vcc)

for (;;)
{
ns_grab_scq_lock(card, scq, flags);
spin_lock_irqsave(&scq->lock, flags);
scqep = scq->next;
if (scqep == scq->base)
scqep = scq->last;
Expand Down Expand Up @@ -1691,7 +1612,7 @@ static void ns_close(struct atm_vcc *vcc)
unsigned long flags;
scq_info *scq = card->scq0;

ns_grab_scq_lock(card, scq, flags);
spin_lock_irqsave(&scq->lock, flags);

for(i = 0; i < scq->num_entries; i++) {
if(scq->skb[i] && ATM_SKB(scq->skb[i])->vcc == vcc) {
Expand Down Expand Up @@ -1892,7 +1813,7 @@ static int push_scqe(ns_dev *card, vc_map *vc, scq_info *scq, ns_scqe *tbd,
u32 data;
int index;

ns_grab_scq_lock(card, scq, flags);
spin_lock_irqsave(&scq->lock, flags);
while (scq->tail == scq->next)
{
if (in_interrupt()) {
Expand All @@ -1904,7 +1825,7 @@ static int push_scqe(ns_dev *card, vc_map *vc, scq_info *scq, ns_scqe *tbd,
scq->full = 1;
spin_unlock_irqrestore(&scq->lock, flags);
interruptible_sleep_on_timeout(&scq->scqfull_waitq, SCQFULL_TIMEOUT);
ns_grab_scq_lock(card, scq, flags);
spin_lock_irqsave(&scq->lock, flags);

if (scq->full) {
spin_unlock_irqrestore(&scq->lock, flags);
Expand Down Expand Up @@ -1953,7 +1874,7 @@ static int push_scqe(ns_dev *card, vc_map *vc, scq_info *scq, ns_scqe *tbd,
if (has_run++) break;
spin_unlock_irqrestore(&scq->lock, flags);
interruptible_sleep_on_timeout(&scq->scqfull_waitq, SCQFULL_TIMEOUT);
ns_grab_scq_lock(card, scq, flags);
spin_lock_irqsave(&scq->lock, flags);
}

if (!scq->full)
Expand Down Expand Up @@ -2090,7 +2011,7 @@ static void drain_scq(ns_dev *card, scq_info *scq, int pos)
return;
}

ns_grab_scq_lock(card, scq, flags);
spin_lock_irqsave(&scq->lock, flags);
i = (int) (scq->tail - scq->base);
if (++i == scq->num_entries)
i = 0;
Expand Down Expand Up @@ -2898,7 +2819,7 @@ static int ns_ioctl(struct atm_dev *dev, unsigned int cmd, void __user *arg)
{
struct sk_buff *hb;

ns_grab_int_lock(card, flags);
spin_lock_irqsave(&card->int_lock, flags);
hb = skb_dequeue(&card->hbpool.queue);
card->hbpool.count--;
spin_unlock_irqrestore(&card->int_lock, flags);
Expand All @@ -2917,7 +2838,7 @@ static int ns_ioctl(struct atm_dev *dev, unsigned int cmd, void __user *arg)
if (hb == NULL)
return -ENOMEM;
NS_SKB_CB(hb)->buf_type = BUF_NONE;
ns_grab_int_lock(card, flags);
spin_lock_irqsave(&card->int_lock, flags);
skb_queue_tail(&card->hbpool.queue, hb);
card->hbpool.count++;
spin_unlock_irqrestore(&card->int_lock, flags);
Expand All @@ -2929,7 +2850,7 @@ static int ns_ioctl(struct atm_dev *dev, unsigned int cmd, void __user *arg)
{
struct sk_buff *iovb;

ns_grab_int_lock(card, flags);
spin_lock_irqsave(&card->int_lock, flags);
iovb = skb_dequeue(&card->iovpool.queue);
card->iovpool.count--;
spin_unlock_irqrestore(&card->int_lock, flags);
Expand All @@ -2948,7 +2869,7 @@ static int ns_ioctl(struct atm_dev *dev, unsigned int cmd, void __user *arg)
if (iovb == NULL)
return -ENOMEM;
NS_SKB_CB(iovb)->buf_type = BUF_NONE;
ns_grab_int_lock(card, flags);
spin_lock_irqsave(&card->int_lock, flags);
skb_queue_tail(&card->iovpool.queue, iovb);
card->iovpool.count++;
spin_unlock_irqrestore(&card->int_lock, flags);
Expand Down Expand Up @@ -2995,7 +2916,7 @@ static void ns_poll(unsigned long arg)
/* Probably it isn't worth spinning */
continue;
}
ns_grab_int_lock(card, flags);
spin_lock_irqsave(&card->int_lock, flags);

stat_w = 0;
stat_r = readl(card->membase + STAT);
Expand Down Expand Up @@ -3062,7 +2983,7 @@ static void ns_phy_put(struct atm_dev *dev, unsigned char value,
unsigned long flags;

card = dev->dev_data;
ns_grab_res_lock(card, flags);
spin_lock_irqsave(&card->res_lock, flags);
while(CMD_BUSY(card));
writel((unsigned long) value, card->membase + DR0);
writel(NS_CMD_WRITE_UTILITY | 0x00000200 | (addr & 0x000000FF),
Expand All @@ -3079,7 +3000,7 @@ static unsigned char ns_phy_get(struct atm_dev *dev, unsigned long addr)
unsigned long data;

card = dev->dev_data;
ns_grab_res_lock(card, flags);
spin_lock_irqsave(&card->res_lock, flags);
while(CMD_BUSY(card));
writel(NS_CMD_READ_UTILITY | 0x00000200 | (addr & 0x000000FF),
card->membase + CMD);
Expand Down
12 changes: 0 additions & 12 deletions drivers/atm/nicstar.h
View file
Original file line number Diff line number Diff line change
Expand Up @@ -28,8 +28,6 @@

/* Options ********************************************************************/

#undef NS_DEBUG_SPINLOCKS

#define NS_MAX_CARDS 4 /* Maximum number of NICStAR based cards
controlled by the device driver. Must
be <= 5 */
Expand Down Expand Up @@ -721,10 +719,6 @@ typedef struct scq_info
wait_queue_head_t scqfull_waitq;
volatile char full; /* SCQ full indicator */
spinlock_t lock; /* SCQ spinlock */
#ifdef NS_DEBUG_SPINLOCKS
volatile long has_lock;
volatile int cpu_lock;
#endif /* NS_DEBUG_SPINLOCKS */
} scq_info;


Expand Down Expand Up @@ -810,12 +804,6 @@ typedef struct ns_dev
unsigned intcnt; /* Interrupt counter */
spinlock_t int_lock; /* Interrupt lock */
spinlock_t res_lock; /* Card resource lock */
#ifdef NS_DEBUG_SPINLOCKS
volatile long has_int_lock;
volatile int cpu_int;
volatile long has_res_lock;
volatile int cpu_res;
#endif /* NS_DEBUG_SPINLOCKS */
} ns_dev;


Expand Down

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