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authorAnton Blanchard <anton@samba.org>2011-07-05 21:51:36 +0000
committerBenjamin Herrenschmidt <benh@kernel.crashing.org>2011-07-19 15:13:05 +1000
commit51d33021425e1f905beb4208823146f2fb6517da (patch)
treee414b64ab60def4ddde52da3696e31cc8df5e078 /arch/powerpc/platforms
parent8c2381af0d3ef62a681dac5a141b6dabb27bf2e1 (diff)
powerpc/pseries/hvconsole: Fix dropped console output
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> Cc: <stable@kernel.org> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Diffstat (limited to 'arch/powerpc/platforms')
-rw-r--r--arch/powerpc/platforms/pseries/hvconsole.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/powerpc/platforms/pseries/hvconsole.c b/arch/powerpc/platforms/pseries/hvconsole.c
index 3f6a89b09816..041e87ca1893 100644
--- 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, const char *buf, int count)
if (ret == H_SUCCESS)
return count;
if (ret == H_BUSY)
- return 0;
+ return -EAGAIN;
return -EIO;
}

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