| From 51d33021425e1f905beb4208823146f2fb6517da Mon Sep 17 00:00:00 2001 |
| From: Anton Blanchard <anton@samba.org> |
| Date: Tue, 5 Jul 2011 21:51:36 +0000 |
| Subject: powerpc/pseries/hvconsole: Fix dropped console output |
| |
| 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; |
| } |
| |
