From 51d33021425e1f905beb4208823146f2fb6517da Mon Sep 17 00:00:00 2001 From: Anton Blanchard Date: Tue, 5 Jul 2011 21:51:36 +0000 Subject: [PATCH] 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 Cc: Signed-off-by: Benjamin Herrenschmidt --- arch/powerpc/platforms/pseries/hvconsole.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/powerpc/platforms/pseries/hvconsole.c b/arch/powerpc/platforms/pseries/hvconsole.c index 3f6a89b..041e87c 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; } -- 2.7.4