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| author | Anton Blanchard <anton@samba.org> | 2011-07-05 21:51:36 +0000 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2011-08-08 10:36:04 -0700 |
| commit | d01e9f4d71f74e7f6e188053384a3613bfb66343 (patch) | |
| tree | 56a603af68c2e1ec7188045fa702b785f25a216a | |
| parent | 5d45c43ce89dd679ab224d1f97bc676b61d9b417 (diff) | |
| download | lwn-d01e9f4d71f74e7f6e188053384a3613bfb66343.tar.gz lwn-d01e9f4d71f74e7f6e188053384a3613bfb66343.zip | |
powerpc/pseries/hvconsole: Fix dropped console output
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>
| -rw-r--r-- | arch/powerpc/platforms/pseries/hvconsole.c | 2 |
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; } |