| Message ID | 20221204081643.3835966-7-yanaijie@huawei.com (mailing list archive) |
|---|---|
| State | Superseded |
| Headers | show |
| Series | scsi: libsas: Some coding style fixes and cleanups | expand |
On 04/12/2022 08:16, Jason Yan wrote: > Factor out sas_ex_add_dev() to be consistent with sas_ata_add_dev() and > unify the error handling. > > Cc: John Garry <john.g.garry@oracle.com> > Signed-off-by: Jason Yan <yanaijie@huawei.com> > --- > drivers/scsi/libsas/sas_expander.c | 68 +++++++++++++++++------------- > 1 file changed, 39 insertions(+), 29 deletions(-) > > diff --git a/drivers/scsi/libsas/sas_expander.c b/drivers/scsi/libsas/sas_expander.c > index 747f4fc795f4..3c72b167d43a 100644 > --- a/drivers/scsi/libsas/sas_expander.c > +++ b/drivers/scsi/libsas/sas_expander.c > @@ -751,13 +751,46 @@ static void sas_ex_get_linkrate(struct domain_device *parent, > child->pathways = min(child->pathways, parent->pathways); > } > > +static int sas_ex_add_dev(struct domain_device *parent, struct ex_phy *phy, > + struct domain_device *child, int phy_id) > +{ > + struct sas_rphy *rphy; > + int res; > + > + child->dev_type = SAS_END_DEVICE; > + rphy = sas_end_device_alloc(phy->port); > + if (unlikely(!rphy)) nit: this is not fastpath so unlikely can be avoided > + return -ENOMEM; > + > + child->tproto = phy->attached_tproto; > + sas_init_dev(child); > + > + child->rphy = rphy; > + get_device(&rphy->dev); > + rphy->identify.phy_identifier = phy_id; > + sas_fill_in_rphy(child, rphy); > + > + list_add_tail(&child->disco_list_node, &parent->port->disco_list); > + > + res = sas_notify_lldd_dev_found(child); > + if (res) { > + pr_notice("notify lldd for device %016llx at %016llx:%02d returned 0x%x\n", > + SAS_ADDR(child->sas_addr), > + SAS_ADDR(parent->sas_addr), phy_id, res); nit: these lines could be aligned with (, as it was before > + sas_rphy_free(child->rphy); > + list_del(&child->disco_list_node); > + return res; > + } > + > + return 0; > +} > + > static struct domain_device *sas_ex_discover_end_dev( > struct domain_device *parent, int phy_id) > { > struct expander_device *parent_ex = &parent->ex_dev; > struct ex_phy *phy = &parent_ex->ex_phy[phy_id]; > struct domain_device *child = NULL; > - struct sas_rphy *rphy; > int res; > > if (phy->attached_sata_host || phy->attached_sata_ps) > @@ -787,44 +820,21 @@ static struct domain_device *sas_ex_discover_end_dev( > > if ((phy->attached_tproto & SAS_PROTOCOL_STP) || phy->attached_sata_dev) { > res = sas_ata_add_dev(parent, phy, child, phy_id); > - if (res) > - goto out_free; > } else if (phy->attached_tproto & SAS_PROTOCOL_SSP) { > - child->dev_type = SAS_END_DEVICE; > - rphy = sas_end_device_alloc(phy->port); > - /* FIXME: error handling */ so has the error handling been fixed now? > - if (unlikely(!rphy)) > - goto out_free; > - child->tproto = phy->attached_tproto; > - sas_init_dev(child); > - > - child->rphy = rphy; > - get_device(&rphy->dev); > - rphy->identify.phy_identifier = phy_id; > - sas_fill_in_rphy(child, rphy); > - > - list_add_tail(&child->disco_list_node, &parent->port->disco_list); > - > - res = sas_notify_lldd_dev_found(child); > - if (res) { > - pr_notice("notify lldd for device %016llx at %016llx:%02d returned 0x%x\n", > - SAS_ADDR(child->sas_addr), > - SAS_ADDR(parent->sas_addr), phy_id, res); > - goto out_list_del; > - } > + res = sas_ex_add_dev(parent, phy, child, phy_id); > } else { > pr_notice("target proto 0x%x at %016llx:0x%x not handled\n", > phy->attached_tproto, SAS_ADDR(parent->sas_addr), > phy_id); > - goto out_free; > + res = -ENODEV; > } > > + if (res) > + goto out_free; > + > list_add_tail(&child->siblings, &parent_ex->children); > return child; > > - out_list_del: > - sas_rphy_free(child->rphy); > - list_del(&child->disco_list_node); > out_free: > sas_port_delete(phy->port); > out_err:
On 2022/12/5 17:31, John Garry wrote: > On 04/12/2022 08:16, Jason Yan wrote: >> Factor out sas_ex_add_dev() to be consistent with sas_ata_add_dev() and >> unify the error handling. >> >> Cc: John Garry <john.g.garry@oracle.com> >> Signed-off-by: Jason Yan <yanaijie@huawei.com> >> --- >> drivers/scsi/libsas/sas_expander.c | 68 +++++++++++++++++------------- >> 1 file changed, 39 insertions(+), 29 deletions(-) >> >> diff --git a/drivers/scsi/libsas/sas_expander.c >> b/drivers/scsi/libsas/sas_expander.c >> index 747f4fc795f4..3c72b167d43a 100644 >> --- a/drivers/scsi/libsas/sas_expander.c >> +++ b/drivers/scsi/libsas/sas_expander.c >> @@ -751,13 +751,46 @@ static void sas_ex_get_linkrate(struct >> domain_device *parent, >> child->pathways = min(child->pathways, parent->pathways); >> } >> +static int sas_ex_add_dev(struct domain_device *parent, struct ex_phy >> *phy, >> + struct domain_device *child, int phy_id) >> +{ >> + struct sas_rphy *rphy; >> + int res; >> + >> + child->dev_type = SAS_END_DEVICE; >> + rphy = sas_end_device_alloc(phy->port); >> + if (unlikely(!rphy)) > > nit: this is not fastpath so unlikely can be avoided > ok. It is only a hint for the compiler so not a big deal. I can delete it. >> + return -ENOMEM; >> + >> + child->tproto = phy->attached_tproto; >> + sas_init_dev(child); >> + >> + child->rphy = rphy; >> + get_device(&rphy->dev); >> + rphy->identify.phy_identifier = phy_id; >> + sas_fill_in_rphy(child, rphy); >> + >> + list_add_tail(&child->disco_list_node, &parent->port->disco_list); >> + >> + res = sas_notify_lldd_dev_found(child); >> + if (res) { >> + pr_notice("notify lldd for device %016llx at %016llx:%02d >> returned 0x%x\n", >> + SAS_ADDR(child->sas_addr), >> + SAS_ADDR(parent->sas_addr), phy_id, res); > > nit: these lines could be aligned with (, as it was before Nice catch. Will fix. > >> + sas_rphy_free(child->rphy); >> + list_del(&child->disco_list_node); >> + return res; >> + } >> + >> + return 0; >> +} >> + >> static struct domain_device *sas_ex_discover_end_dev( >> struct domain_device *parent, int phy_id) >> { >> struct expander_device *parent_ex = &parent->ex_dev; >> struct ex_phy *phy = &parent_ex->ex_phy[phy_id]; >> struct domain_device *child = NULL; >> - struct sas_rphy *rphy; >> int res; >> if (phy->attached_sata_host || phy->attached_sata_ps) >> @@ -787,44 +820,21 @@ static struct domain_device >> *sas_ex_discover_end_dev( >> if ((phy->attached_tproto & SAS_PROTOCOL_STP) || >> phy->attached_sata_dev) { >> res = sas_ata_add_dev(parent, phy, child, phy_id); >> - if (res) >> - goto out_free; >> } else if (phy->attached_tproto & SAS_PROTOCOL_SSP) { >> - child->dev_type = SAS_END_DEVICE; >> - rphy = sas_end_device_alloc(phy->port); >> - /* FIXME: error handling */ > > so has the error handling been fixed now? IIUC, the error handling is ok so this comment can be deleted. Thanks, Jason
diff --git a/drivers/scsi/libsas/sas_expander.c b/drivers/scsi/libsas/sas_expander.c index 747f4fc795f4..3c72b167d43a 100644 --- a/drivers/scsi/libsas/sas_expander.c +++ b/drivers/scsi/libsas/sas_expander.c @@ -751,13 +751,46 @@ static void sas_ex_get_linkrate(struct domain_device *parent, child->pathways = min(child->pathways, parent->pathways); } +static int sas_ex_add_dev(struct domain_device *parent, struct ex_phy *phy, + struct domain_device *child, int phy_id) +{ + struct sas_rphy *rphy; + int res; + + child->dev_type = SAS_END_DEVICE; + rphy = sas_end_device_alloc(phy->port); + if (unlikely(!rphy)) + return -ENOMEM; + + child->tproto = phy->attached_tproto; + sas_init_dev(child); + + child->rphy = rphy; + get_device(&rphy->dev); + rphy->identify.phy_identifier = phy_id; + sas_fill_in_rphy(child, rphy); + + list_add_tail(&child->disco_list_node, &parent->port->disco_list); + + res = sas_notify_lldd_dev_found(child); + if (res) { + pr_notice("notify lldd for device %016llx at %016llx:%02d returned 0x%x\n", + SAS_ADDR(child->sas_addr), + SAS_ADDR(parent->sas_addr), phy_id, res); + sas_rphy_free(child->rphy); + list_del(&child->disco_list_node); + return res; + } + + return 0; +} + static struct domain_device *sas_ex_discover_end_dev( struct domain_device *parent, int phy_id) { struct expander_device *parent_ex = &parent->ex_dev; struct ex_phy *phy = &parent_ex->ex_phy[phy_id]; struct domain_device *child = NULL; - struct sas_rphy *rphy; int res; if (phy->attached_sata_host || phy->attached_sata_ps) @@ -787,44 +820,21 @@ static struct domain_device *sas_ex_discover_end_dev( if ((phy->attached_tproto & SAS_PROTOCOL_STP) || phy->attached_sata_dev) { res = sas_ata_add_dev(parent, phy, child, phy_id); - if (res) - goto out_free; } else if (phy->attached_tproto & SAS_PROTOCOL_SSP) { - child->dev_type = SAS_END_DEVICE; - rphy = sas_end_device_alloc(phy->port); - /* FIXME: error handling */ - if (unlikely(!rphy)) - goto out_free; - child->tproto = phy->attached_tproto; - sas_init_dev(child); - - child->rphy = rphy; - get_device(&rphy->dev); - rphy->identify.phy_identifier = phy_id; - sas_fill_in_rphy(child, rphy); - - list_add_tail(&child->disco_list_node, &parent->port->disco_list); - - res = sas_notify_lldd_dev_found(child); - if (res) { - pr_notice("notify lldd for device %016llx at %016llx:%02d returned 0x%x\n", - SAS_ADDR(child->sas_addr), - SAS_ADDR(parent->sas_addr), phy_id, res); - goto out_list_del; - } + res = sas_ex_add_dev(parent, phy, child, phy_id); } else { pr_notice("target proto 0x%x at %016llx:0x%x not handled\n", phy->attached_tproto, SAS_ADDR(parent->sas_addr), phy_id); - goto out_free; + res = -ENODEV; } + if (res) + goto out_free; + list_add_tail(&child->siblings, &parent_ex->children); return child; - out_list_del: - sas_rphy_free(child->rphy); - list_del(&child->disco_list_node); out_free: sas_port_delete(phy->port); out_err:
Factor out sas_ex_add_dev() to be consistent with sas_ata_add_dev() and unify the error handling. Cc: John Garry <john.g.garry@oracle.com> Signed-off-by: Jason Yan <yanaijie@huawei.com> --- drivers/scsi/libsas/sas_expander.c | 68 +++++++++++++++++------------- 1 file changed, 39 insertions(+), 29 deletions(-)