linux-kernel - [PATCH v6 0/4] scsi: libsas: Fix the failure of adding phy with zero-address to port

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Date: Tue, 12 Mar 2024 14:10:59 +0000
From: Xingui Yang <yangxingui@...wei.com>
To: <john.g.garry@...cle.com>, <yanaijie@...wei.com>, <jejb@...ux.ibm.com>,
	<martin.petersen@...cle.com>, <damien.lemoal@...nsource.wdc.com>
CC: <linux-scsi@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
	<linuxarm@...wei.com>, <prime.zeng@...ilicon.com>,
	<chenxiang66@...ilicon.com>, <kangfenglong@...wei.com>
Subject: [PATCH v6 0/4] scsi: libsas: Fix the failure of adding phy with zero-address to port

This series is to solve the problem of a BUG() when adding phy with zero
address to a new port.

v5 -> v6
1. rename sas_add_parent_port() to sas_ex_add_parent_port() based on
   John's suggestion.
2. Distill port settings into a single patch.
3. Update comments information.

v4 -> v5
1. Add new helper sas_port_add_ex_phy() based on John's suggestion.
2. Move sas_add_parent_port() to sas_expander.c based on John's suggestion.
3. Update the comments.

v3 -> v4:
1. Update patch title and comments based on John's suggestion.

v2 -> v3:
1. Set ex_dev->parent_port to NULL when the number of PHYs of the parent
   port becomes 0.
2. Update the comments.

v1 -> v2:
1. Set ex_phy->port with parent_port when ex_phy is added to the parent
   port.
2. Set ex_phy to NULL when free expander.
3. Update the comments.

Xingui Yang (4):
  scsi: libsas: Add helper for port add ex_phy
  scsi: libsas: Move sas_add_parent_port() to sas_expander.c
  scsi: libsas: Set port when ex_phy is added or deleted
  scsi: libsas: Fix the failure of adding phy with zero-address to port

 drivers/scsi/libsas/sas_expander.c | 38 +++++++++++++++++++++++-------
 drivers/scsi/libsas/sas_internal.h | 15 ------------
 2 files changed, 30 insertions(+), 23 deletions(-)

-- 
2.17.1