atm nicstar: Removal of debug code containing deprecated calls to cli()/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 <[e-mail]>
Reviewed-by: Matthew Wilcox <[e-mail]>
Signed-off-by: David S. Miller <[e-mail]>

drivers/atm/nicstar.c

···
 #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 ******************************************************/
 
···
    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));
···
    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);
···
             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);
···
 
    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);
 
···
       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);
···
 	                       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;
···
 
       for (;;)
       {
-         ns_grab_scq_lock(card, scq, flags);
+         spin_lock_irqsave(&scq->lock, flags);
          scqep = scq->next;
          if (scqep == scq->base)
             scqep = scq->last;
···
      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) {
···
    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()) {
···
       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);
···
          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)
···
       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;
···
 	       {
                   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);
···
                   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);
···
 	       {
 	          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);
···
                   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);
···
       /* 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);
···
    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),
···
    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);

drivers/atm/nicstar.h

···
 
 /* Options ********************************************************************/
 
-#undef NS_DEBUG_SPINLOCKS
-
 #define NS_MAX_CARDS 4		/* Maximum number of NICStAR based cards
 				   controlled by the device driver. Must
                                    be <= 5 */
···
    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;
 
 
···
    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;