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    Subject[39/55] powerpc/pseries/hvconsole: Fix dropped console output
    2.6.32-longterm review patch.  If anyone has any objections, please let us know.

    ------------------

    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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