Return -EAGAIN when we get H_BUSY back from the hypervisor. This
makes the hvc console driver retry, avoiding dropped printks.
Signed-off-by: Anton Blanchard <an...@samba.org>
Cc: <sta...@kernel.org>
---
Index: linux-powerpc/arch/powerpc/platforms/pseries/hvconsole.c
===================================================================
--- linux-powerpc.orig/arch/powerpc/platforms/pseries/hvconsole.c
2011-07-06 17:11:33.799095935 +1000
+++ linux-powerpc/arch/powerpc/platforms/pseries/hvconsole.c 2011-07-06
17:11:47.499332962 +1000
@@ -73,7 +73,7 @@ int hvc_put_chars(uint32_t vtermno, cons
if (ret == H_SUCCESS)
return count;
if (ret == H_BUSY)
- return 0;
+ return -EAGAIN;
return -EIO;
}
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