[ofw] patch: [MTHCA] bugfix in CMD interface: wait for GO bit before issuing command in polling mode.

[Tzachi Dar]

This patch goes to the trunk, unless there is anoher RC.
 
Signed off by: leonid.
 
Index: Q:/projinf4/trunk/hw/mthca/kernel/mthca_cmd.c
===================================================================
--- Q:/projinf4/trunk/hw/mthca/kernel/mthca_cmd.c (revision 3312)
+++ Q:/projinf4/trunk/hw/mthca/kernel/mthca_cmd.c (revision 3313)
@@ -259,10 +259,16 @@
 
  down(&dev->cmd.hcr_mutex);
 
- if (event && wait_go_bit(dev,GO_BIT_TIMEOUT)) {
-  err = -EAGAIN;
-  goto out;
- }
+ if (event)
+  if (wait_go_bit(dev,GO_BIT_TIMEOUT)) {
+   err = -EAGAIN;
+   goto out;
+  }
+ else
+  if (go_bit(dev)) {
+   err = -EAGAIN;
+   goto out;
+  }
 
  /*
   * We use writel (instead of something like memcpy_toio)

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