[PATCH] prism54 : Unused variable / extraneous udelay

In isl_38xx.c :
The variable "counter" is defined and incremented but never
used except if the driver is hand-compiled setting
VERBOSE > SHOW_ERROR_MESSAGES.
Move the definition and the increment to within the
#if VERBOSE ..   block.

Remove extraneous udelay's.
These are not required when triggering the device.

Signed-off-by: Roger While <simrw@sim-basis.de>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

1 files changed, 4 insertions, 8 deletions

diff --git a/drivers/net/wireless/prism54/isl_38xx.c b/drivers/net/wireless/prism54/isl_38xx.c
index adc7499136d..866c476933c 100644
--- a/drivers/net/wireless/prism54/isl_38xx.c
+++ b/drivers/net/wireless/prism54/isl_38xx.c
@@ -112,9 +112,10 @@ isl38xx_handle_wakeup(isl38xx_control_block *control_block,
 void
 isl38xx_trigger_device(int asleep, void __iomem *device_base)
 {
-        u32 reg, counter = 0;
+        u32 reg;
 
 #if VERBOSE > SHOW_ERROR_MESSAGES
+        u32 counter = 0;
         struct timeval current_time;
         DEBUG(SHOW_FUNCTION_CALLS, "isl38xx trigger device\n");
 #endif
@@ -131,7 +132,6 @@ isl38xx_trigger_device(int asleep, void __iomem *device_base)
                       current_time.tv_sec, (long)current_time.tv_usec,
                       readl(device_base + ISL38XX_CTRL_STAT_REG));
 #endif
-                udelay(ISL38XX_WRITEIO_DELAY);
 
                 reg = readl(device_base + ISL38XX_INT_IDENT_REG);
                 if (reg == 0xabadface) {
@@ -145,7 +145,9 @@ isl38xx_trigger_device(int asleep, void __iomem *device_base)
                         while (reg = readl(device_base + ISL38XX_CTRL_STAT_REG),
                                (reg & ISL38XX_CTRL_STAT_SLEEPMODE) == 0) {
                                 udelay(ISL38XX_WRITEIO_DELAY);
+#if VERBOSE > SHOW_ERROR_MESSAGES
                                 counter++;
+#endif
                         }
 
 #if VERBOSE > SHOW_ERROR_MESSAGES
@@ -153,10 +155,6 @@ isl38xx_trigger_device(int asleep, void __iomem *device_base)
                               "%08li.%08li Device register read %08x\n",
                               current_time.tv_sec, (long)current_time.tv_usec,
                               readl(device_base + ISL38XX_CTRL_STAT_REG));
-#endif
-                        udelay(ISL38XX_WRITEIO_DELAY);
-
-#if VERBOSE > SHOW_ERROR_MESSAGES
                         do_gettimeofday(&current_time);
                         DEBUG(SHOW_TRACING,
                               "%08li.%08li Device asleep counter %i\n",
@@ -171,7 +169,6 @@ isl38xx_trigger_device(int asleep, void __iomem *device_base)
 
                 /* perform another read on the Device Status Register */
                 reg = readl(device_base + ISL38XX_CTRL_STAT_REG);
-                udelay(ISL38XX_WRITEIO_DELAY);
 
 #if VERBOSE > SHOW_ERROR_MESSAGES
                 do_gettimeofday(&current_time);
@@ -187,7 +184,6 @@ isl38xx_trigger_device(int asleep, void __iomem *device_base)
 
                 isl38xx_w32_flush(device_base, ISL38XX_DEV_INT_UPDATE,
                                   ISL38XX_DEV_INT_REG);
-                udelay(ISL38XX_WRITEIO_DELAY);
         }
 }