diff options
| author | Jason Yan <yanaijie@huawei.com> | 2023-04-21 17:37:42 +0800 |
|---|---|---|
| committer | Martin K. Petersen <martin.petersen@oracle.com> | 2023-05-08 07:16:18 -0400 |
| commit | e3be011e828037be60fc91fa2d1791f9ee612a46 (patch) | |
| tree | c6912eb6fda3c5d96d3d06f812abe0fa451097ca /drivers/scsi/libsas | |
| parent | ac9a78681b921877518763ba0e89202254349d1b (diff) | |
scsi: libsas: Simplify sas_check_eeds()
In sas_check_eeds() there is an empty branch. We can reverse the test
expression and then remove the empty branch. Also the test expression is a
little bit complex so it deserves an individual function. And make the
continuing prototype lines indented after the opening parenthesis to follow
the standard coding style.
Signed-off-by: Jason Yan <yanaijie@huawei.com>
Link: https://lore.kernel.org/r/20230421093744.1583609-2-yanaijie@huawei.com
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Diffstat (limited to 'drivers/scsi/libsas')
| -rw-r--r-- | drivers/scsi/libsas/sas_expander.c | 40 |
1 files changed, 20 insertions, 20 deletions
diff --git a/drivers/scsi/libsas/sas_expander.c b/drivers/scsi/libsas/sas_expander.c index dc670304f181..e6101a511cc7 100644 --- a/drivers/scsi/libsas/sas_expander.c +++ b/drivers/scsi/libsas/sas_expander.c @@ -1198,37 +1198,37 @@ static void sas_print_parent_topology_bug(struct domain_device *child, sas_route_char(child, child_phy)); } +static bool sas_eeds_valid(struct domain_device *parent, + struct domain_device *child) +{ + struct sas_discovery *disc = &parent->port->disc; + + return (SAS_ADDR(disc->eeds_a) == SAS_ADDR(parent->sas_addr) || + SAS_ADDR(disc->eeds_a) == SAS_ADDR(child->sas_addr)) && + (SAS_ADDR(disc->eeds_b) == SAS_ADDR(parent->sas_addr) || + SAS_ADDR(disc->eeds_b) == SAS_ADDR(child->sas_addr)); +} + static int sas_check_eeds(struct domain_device *child, - struct ex_phy *parent_phy, - struct ex_phy *child_phy) + struct ex_phy *parent_phy, + struct ex_phy *child_phy) { int res = 0; struct domain_device *parent = child->parent; + struct sas_discovery *disc = &parent->port->disc; - if (SAS_ADDR(parent->port->disc.fanout_sas_addr) != 0) { + if (SAS_ADDR(disc->fanout_sas_addr) != 0) { res = -ENODEV; pr_warn("edge ex %016llx phy S:%02d <--> edge ex %016llx phy S:%02d, while there is a fanout ex %016llx\n", SAS_ADDR(parent->sas_addr), parent_phy->phy_id, SAS_ADDR(child->sas_addr), child_phy->phy_id, - SAS_ADDR(parent->port->disc.fanout_sas_addr)); - } else if (SAS_ADDR(parent->port->disc.eeds_a) == 0) { - memcpy(parent->port->disc.eeds_a, parent->sas_addr, - SAS_ADDR_SIZE); - memcpy(parent->port->disc.eeds_b, child->sas_addr, - SAS_ADDR_SIZE); - } else if (((SAS_ADDR(parent->port->disc.eeds_a) == - SAS_ADDR(parent->sas_addr)) || - (SAS_ADDR(parent->port->disc.eeds_a) == - SAS_ADDR(child->sas_addr))) - && - ((SAS_ADDR(parent->port->disc.eeds_b) == - SAS_ADDR(parent->sas_addr)) || - (SAS_ADDR(parent->port->disc.eeds_b) == - SAS_ADDR(child->sas_addr)))) - ; - else { + SAS_ADDR(disc->fanout_sas_addr)); + } else if (SAS_ADDR(disc->eeds_a) == 0) { + memcpy(disc->eeds_a, parent->sas_addr, SAS_ADDR_SIZE); + memcpy(disc->eeds_b, child->sas_addr, SAS_ADDR_SIZE); + } else if (!sas_eeds_valid(parent, child)) { res = -ENODEV; pr_warn("edge ex %016llx phy%02d <--> edge ex %016llx phy%02d link forms a third EEDS!\n", SAS_ADDR(parent->sas_addr), |