From ccc0e7dc708ce1bd2e1c4a2b6a180ae7459374de Mon Sep 17 00:00:00 2001 From: Stefan Haberland Date: Fri, 23 Oct 2015 12:10:51 +0200 Subject: [PATCH] s390/dasd: fix disconnected device with valid path mask Path verification is either done via dasd_eckd_read_conf() which is triggered during online processing and resume or via do_path_verification_work() which is triggered after path events. The dasd_eckd_read_conf() version added paths unconditionally and did not check if the path mask was empty. This led to devices having the disconnected stop flag set but a valid path mask. So they where not working although they had paths validated successfully. After a resume this state could even not be solved with additional paths added. Fix by checking for an empty path mask in dasd_eckd_read_conf() and clearing the device stop bits for a newly added channel path. Reviewed-by: Sebastian Ott Signed-off-by: Stefan Haberland Signed-off-by: Martin Schwidefsky --- drivers/s390/block/dasd_eckd.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) diff --git a/drivers/s390/block/dasd_eckd.c b/drivers/s390/block/dasd_eckd.c index 3d929abb52c7..9083247f55a8 100644 --- a/drivers/s390/block/dasd_eckd.c +++ b/drivers/s390/block/dasd_eckd.c @@ -1171,7 +1171,12 @@ static int dasd_eckd_read_conf(struct dasd_device *device) path_data->ppm |= lpm; break; } - path_data->opm |= lpm; + if (!path_data->opm) { + path_data->opm = lpm; + dasd_generic_path_operational(device); + } else { + path_data->opm |= lpm; + } /* * if the path is used * it should not be in one of the negative lists -- 2.30.2