From 16dad2798870c181f3cae976e4e0257d4fdf3a3c Mon Sep 17 00:00:00 2001 From: Jens Remus Date: Thu, 17 May 2018 19:15:07 +0200 Subject: [PATCH] scsi: zfcp: enhance comments on fc_link_speed and supported_speed The comment on fsf_qtcb_bottom_port.supported_speed did read as if the field can only assume one of two possible values (i.e. 0x1 for 1 GBit/s or 0x2 for 2 GBit/s). This is not true for two reasons: first it is a flag field and can thus assume any combination and second there are meanwhile more speeds. Clarify comment on fsf_qtcb_bottom_port.supported_speed and add a comment to fsf_qtcb_bottom_config.fc_link_speed. Signed-off-by: Jens Remus Reviewed-by: Steffen Maier Reviewed-by: Fedor Loshakov Acked-by: Benjamin Block Acked-by: Hendrik Brueckner Signed-off-by: Steffen Maier Signed-off-by: Martin K. Petersen --- drivers/s390/scsi/zfcp_fsf.h | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/drivers/s390/scsi/zfcp_fsf.h b/drivers/s390/scsi/zfcp_fsf.h index 4baca67aba6d..535628b92f0a 100644 --- a/drivers/s390/scsi/zfcp_fsf.h +++ b/drivers/s390/scsi/zfcp_fsf.h @@ -4,7 +4,7 @@ * * Interface to the FSF support functions. * - * Copyright IBM Corp. 2002, 2017 + * Copyright IBM Corp. 2002, 2018 */ #ifndef FSF_H @@ -356,7 +356,7 @@ struct fsf_qtcb_bottom_config { u32 adapter_features; u32 connection_features; u32 fc_topology; - u32 fc_link_speed; + u32 fc_link_speed; /* one of ZFCP_FSF_PORTSPEED_* */ u32 adapter_type; u8 res0; u8 peer_d_id[3]; @@ -382,7 +382,7 @@ struct fsf_qtcb_bottom_port { u32 class_of_service; /* should be 0x00000006 for class 2 and 3 */ u8 supported_fc4_types[32]; /* should be 0x00000100 for scsi fcp */ u8 active_fc4_types[32]; - u32 supported_speed; /* 0x0001 for 1 GBit/s or 0x0002 for 2 GBit/s */ + u32 supported_speed; /* any combination of ZFCP_FSF_PORTSPEED_* */ u32 maximum_frame_size; /* fixed value of 2112 */ u64 seconds_since_last_reset; u64 tx_frames;