From: linas@austin.ibm.com (Linas Vepstas)
To: Greg KH <gregkh@suse.de>
Cc: Andrew Morton <akpm@osdl.org>,
linuxppc-dev@ozlabs.org, linux-pci@atrey.karlin.mff.cuni.cz
Subject: [PATCH 15/19] PCI: rpaphp: Document find_php_slot()
Date: Mon, 2 Apr 2007 19:47:46 -0500 (CDT) [thread overview]
Message-ID: <20070403004746.ECA163A65C@topology.austin.ibm.com> (raw)
In-Reply-To: <20070403002629.GI4922@austin.ibm.com>
Document some of the interaction between dlpar and hotplug.
viz, the a dlpar remove of a htoplug slot uses hotplug to remove it.
Signed-off-by: Linas Vepstas <linas@austin.ibm.com>
Cc: John Rose <johnrose@austin.ibm.com>
----
drivers/pci/hotplug/rpadlpar_core.c | 18 +++++++++++++-----
1 file changed, 13 insertions(+), 5 deletions(-)
Index: linux-2.6.21-rc4-git4/drivers/pci/hotplug/rpadlpar_core.c
===================================================================
--- linux-2.6.21-rc4-git4.orig/drivers/pci/hotplug/rpadlpar_core.c 2007-04-02 14:34:46.000000000 -0500
+++ linux-2.6.21-rc4-git4/drivers/pci/hotplug/rpadlpar_core.c 2007-04-02 14:40:09.000000000 -0500
@@ -98,7 +98,15 @@ static struct device_node *find_dlpar_no
return NULL;
}
-static struct slot *find_slot(struct device_node *dn)
+/**
+ * find_php_slot - return hotplug slot structure for device node
+ *
+ * This routine will return the hotplug slot structure
+ * for a given device node. Note that built-in PCI slots
+ * may be dlpar-able, but not hot-pluggable, so this routine
+ * will return NULL for built-in PCI slots.
+ */
+static struct slot *find_php_slot(struct device_node *dn)
{
struct list_head *tmp, *n;
struct slot *slot;
@@ -224,9 +232,9 @@ static int dlpar_remove_phb(char *drc_na
if (!pcibios_find_pci_bus(dn))
return -EINVAL;
- slot = find_slot(dn);
+ /* If pci slot is hotplugable, use hotplug to remove it */
+ slot = find_php_slot(dn);
if (slot) {
- /* Remove hotplug slot */
if (rpaphp_deregister_slot(slot)) {
printk(KERN_ERR
"%s: unable to remove hotplug slot %s\n",
@@ -370,9 +378,9 @@ int dlpar_remove_pci_slot(char *drc_name
if (!bus)
return -EINVAL;
- slot = find_slot(dn);
+ /* If pci slot is hotplugable, use hotplug to remove it */
+ slot = find_php_slot(dn);
if (slot) {
- /* Remove hotplug slot */
if (rpaphp_deregister_slot(slot)) {
printk(KERN_ERR
"%s: unable to remove hotplug slot %s\n",
next prev parent reply other threads:[~2007-04-03 0:47 UTC|newest]
Thread overview: 33+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-04-03 0:26 [PATCH 0/19]: RPAPHP pci hotplug cleanup patchbomb Linas Vepstas
2007-04-03 0:33 ` [PATCH 1/19] PCI: rpaphp: Cleanup flow of control for rpaphp_add_slot Linas Vepstas
2007-04-03 14:28 ` Nathan Lynch
2007-04-03 16:00 ` Linas Vepstas
2007-04-03 0:34 ` [PATCH 2/19] PCI: rpaphp: Remove global num_slots variable Linas Vepstas
2007-04-03 0:35 ` [PATCH 3/19] PCI: rpaphp: match up alloc and free in same routine Linas Vepstas
2007-04-03 0:36 ` [PATCH 4/19] PCI: rpaphp: Fix a memleak; slot->location string was never freed Linas Vepstas
2007-04-03 0:37 ` [PATCH 5/19] PCI: rpaphp: Remove un-needed goto Linas Vepstas
2007-04-03 10:49 ` Christoph Hellwig
2007-04-03 15:59 ` Linas Vepstas
2007-04-03 0:38 ` [PATCH 6/19] PCI: rpaphp: remove a function that does nothing but wrap debug printk's Linas Vepstas
2007-04-03 0:39 ` [PATCH 7/19] PCI: rpaphp: Remve another call that is a wrapper Linas Vepstas
2007-04-03 0:40 ` [PATCH 8/19] PCI: rpaphp: Remove another wrappered function Linas Vepstas
2007-04-03 0:41 ` [PATCH 9/19] PCI: rpaphp: remove a call that does nothing but a pointer lookup Linas Vepstas
2007-04-03 0:42 ` [PATCH 10/19] PCI: rpaphp: Remove setup_pci_slot() Linas Vepstas
2007-04-03 0:43 ` [PATCH 11/19] PCI: rpaphp: remove print_slot_pci_funcs() Linas Vepstas
2007-04-03 0:44 ` [PATCH 12/19] PCI: rpaphp: remove rpaphp_set_attention_status() Linas Vepstas
2007-04-03 16:19 ` Nathan Lynch
2007-04-03 16:45 ` Linas Vepstas
2007-04-03 0:45 ` [PATCH 13/19] PCI: rpaphp: refactor tail call to rpaphp_register_slot() Linas Vepstas
2007-04-03 0:46 ` [PATCH 14/19] PCI: rpaphp: Rename rpaphp_register_pci_slot() to rpaphp_enable_slot() Linas Vepstas
2007-04-03 0:47 ` Linas Vepstas [this message]
2007-04-03 0:48 ` [PATCH 16/19] PCI: rpaphp: Document is_php_dn() Linas Vepstas
2007-04-03 0:49 ` [PATCH 17/19] PCI: rpaphp: Use pcibios_remove_pci_devices() symmetrically Linas Vepstas
2007-04-03 0:50 ` [PATCH 18/19] PCI: rpaphp: Ensure more pcibios_add/pcibios_remove symmetry Linas Vepstas
2007-04-03 0:51 ` [PATCH 19/19] PCI: rpaphp: Remove semaphores Linas Vepstas
2007-04-03 4:15 ` [PATCH 0/19]: RPAPHP pci hotplug cleanup patchbomb Greg KH
2007-04-03 16:18 ` Linas Vepstas
2007-04-03 16:34 ` Linas Vepstas
2007-04-03 16:48 ` Linas Vepstas
2007-04-05 15:33 ` Kristen Carlson Accardi
2007-04-05 22:41 ` Linas Vepstas
-- strict thread matches above, loose matches on Subject: below --
2007-04-03 17:29 [PATCH 15/19] PCI: rpaphp: Document find_php_slot() Linas Vepstas
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