Messages in this thread Patch in this message | | | Date | Fri, 05 Aug 2011 17:03:57 -0700 | From | Greg KH <> | Subject | [39/50] powerpc/pseries/hvconsole: Fix dropped console output |
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2.6.33-longterm review patch. If anyone has any objections, please let us know.
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From: Anton Blanchard <anton@samba.org>
commit 51d33021425e1f905beb4208823146f2fb6517da upstream.
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 <anton@samba.org> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
--- arch/powerpc/platforms/pseries/hvconsole.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
--- a/arch/powerpc/platforms/pseries/hvconsole.c +++ b/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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