Docs: blackfin: Use new switch macro SAMPLE_IRQ_TIMER instead of IRQ_TIMER5

Not all blackfin machines support IRQ_TIMER5, but all machines support
IRQ_TIMER2. So add a switch macro for them. The related error:

  Documentation/blackfin/gptimers-example.c: In function 'gptimer_example_init':
  Documentation/blackfin/gptimers-example.c:60:20: error: 'IRQ_TIMER5' undeclared (first use in this function)
    ret = request_irq(IRQ_TIMER5, gptimer_example_irq, IRQF_SHARED, DRIVER_NAME, &data);
                      ^
  Documentation/blackfin/gptimers-example.c:60:20: note: each undeclared identifier is reported only once for each function it appears in
  Documentation/blackfin/gptimers-example.c: In function 'gptimer_example_exit':
  Documentation/blackfin/gptimers-example.c:78:11: error: 'IRQ_TIMER5' undeclared (first use in this function)
    free_irq(IRQ_TIMER5, &data);
             ^

Also notice about 80 columns limitation.

Signed-off-by: Chen Gang <gang.chen.5i5j@gmail.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>

1 files changed, 11 insertions, 3 deletions

diff --git a/Documentation/blackfin/gptimers-example.c b/Documentation/blackfin/gptimers-example.c
index b1bd6340e748..283eba993d9d 100644
--- a/Documentation/blackfin/gptimers-example.c
+++ b/Documentation/blackfin/gptimers-example.c
@@ -17,6 +17,12 @@
 
 #define DRIVER_NAME "gptimer_example"
 
+#ifdef IRQ_TIMER5
+#define SAMPLE_IRQ_TIMER IRQ_TIMER5
+#else
+#define SAMPLE_IRQ_TIMER IRQ_TIMER2
+#endif
+
 struct gptimer_data {
         uint32_t period, width;
 };
@@ -57,7 +63,8 @@ static int __init gptimer_example_init(void)
         }
 
         /* grab the IRQ for the timer */
-        ret = request_irq(IRQ_TIMER5, gptimer_example_irq, IRQF_SHARED, DRIVER_NAME, &data);
+        ret = request_irq(SAMPLE_IRQ_TIMER, gptimer_example_irq,
+                        IRQF_SHARED, DRIVER_NAME, &data);
         if (ret) {
                 printk(KERN_NOTICE DRIVER_NAME ": IRQ request failed\n");
                 peripheral_free(P_TMR5);
@@ -65,7 +72,8 @@ static int __init gptimer_example_init(void)
         }
 
         /* setup the timer and enable it */
-        set_gptimer_config(TIMER5_id, WDTH_CAP | PULSE_HI | PERIOD_CNT | IRQ_ENA);
+        set_gptimer_config(TIMER5_id,
+                        WDTH_CAP | PULSE_HI | PERIOD_CNT | IRQ_ENA);
         enable_gptimers(TIMER5bit);
 
         return 0;
@@ -75,7 +83,7 @@ module_init(gptimer_example_init);
 static void __exit gptimer_example_exit(void)
 {
         disable_gptimers(TIMER5bit);
-        free_irq(IRQ_TIMER5, &data);
+        free_irq(SAMPLE_IRQ_TIMER, &data);
         peripheral_free(P_TMR5);
 }
 module_exit(gptimer_example_exit);