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powerpc: pseries: remove dlpar_attach_node dependency on full path 

In preparation to stop storing the full node path in full_name, remove the
dependency on full_name from dlpar_attach_node(). Callers of
dlpar_attach_node() already have the parent device_node, so just pass the
parent node into dlpar_attach_node instead of the path. This avoids doing
a lookup of the parent node by the path.

Signed-off-by: Rob Herring <robh@kernel.org>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: linuxppc-dev@lists.ozlabs.org
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
This commit is contained in:
Rob Herring 2017-08-21 10:16:49 -05:00 committed by Michael Ellerman
parent b7c670d673
commit 215ee763f8
4 changed files with 5 additions and 7 deletions
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6
arch/powerpc/platforms/pseries/dlpar.c
View File

@ -254,13 +254,11 @@ cc_error:
return first_dn;
}
int dlpar_attach_node(struct device_node *dn)
int dlpar_attach_node(struct device_node *dn, struct device_node *parent)
{
int rc;
dn->parent = pseries_of_derive_parent(dn->full_name);
if (IS_ERR(dn->parent))
return PTR_ERR(dn->parent);
dn->parent = parent;
rc = of_attach_node(dn);
if (rc) {

2
arch/powerpc/platforms/pseries/hotplug-cpu.c
View File

@ -463,7 +463,7 @@ static ssize_t dlpar_cpu_add(u32 drc_index)
return -EINVAL;
}
rc = dlpar_attach_node(dn);
rc = dlpar_attach_node(dn, parent);
if (rc) {
saved_rc = rc;
pr_warn("Failed to attach node %s, rc: %d, drc index: %x\n",

2
arch/powerpc/platforms/pseries/mobility.c
View File

@ -229,7 +229,7 @@ static int add_dt_node(__be32 parent_phandle, __be32 drc_index)
if (!dn)
return -ENOENT;
rc = dlpar_attach_node(dn);
rc = dlpar_attach_node(dn, parent_dn);
if (rc)
dlpar_free_cc_nodes(dn);

2
arch/powerpc/platforms/pseries/pseries.h
View File

@ -46,7 +46,7 @@ extern void dlpar_free_cc_nodes(struct device_node *);
extern void dlpar_free_cc_property(struct property *);
extern struct device_node *dlpar_configure_connector(__be32,
struct device_node *);
extern int dlpar_attach_node(struct device_node *);
extern int dlpar_attach_node(struct device_node *, struct device_node *);
extern int dlpar_detach_node(struct device_node *);
extern int dlpar_acquire_drc(u32 drc_index);
extern int dlpar_release_drc(u32 drc_index);