[ofw][patch] bugfix in CMD interface

[Leonid Keller]

[MTHCA] bugfix in CMD interface: wait for GO bit before issuing command
in polling mode. [mlnx: 3313]

 
Index: mthca/kernel/mthca_cmd.c
===================================================================
--- mthca/kernel/mthca_cmd.c (revision 1765)
+++ mthca/kernel/mthca_cmd.c (working copy)
@@ -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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