2.6.35-longterm review patch. If anyone has any objections, please let me know.
------------------
From: Anton Blanchard <an...@samba.org>
[ upstream commit 51d33021425e1f905beb4208823146f2fb6517da ]
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>
Signed-off-by: Benjamin Herrenschmidt <b...@kernel.crashing.org>
Signed-off-by: Andi Kleen <a...@linux.intel.com>
Index: linux-2.6.35.y/arch/powerpc/platforms/pseries/hvconsole.c
===================================================================
--- linux-2.6.35.y.orig/arch/powerpc/platforms/pseries/hvconsole.c
+++ linux-2.6.35.y/arch/powerpc/platforms/pseries/hvconsole.c
@@ -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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