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[RFC,4/9] PCI: rpaphp: fix up pointer to first drc-info entry

Message ID 1569910334-5972-5-git-send-email-tyreld@linux.ibm.com
State Not Applicable
Delegated to: Bjorn Helgaas
Headers show
Series Fixes and Enablement of ibm,drc-info property | expand

Commit Message

Tyrel Datwyler Oct. 1, 2019, 6:12 a.m. UTC
The first entry of the ibm,drc-info property is an int encoded count
of the number of drc-info entries that follow. The "value" pointer
returned by of_prop_next_u32() is still pointing at the this value
when we call of_read_drc_info_cell().

Fix up by incrementing the "value" pointer to point at the first
element of the first drc-info entry prior.

Signed-off-by: Tyrel Datwyler <tyreld@linux.ibm.com>
---
 drivers/pci/hotplug/rpaphp_core.c | 2 ++
 1 file changed, 2 insertions(+)
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Patch

diff --git a/drivers/pci/hotplug/rpaphp_core.c b/drivers/pci/hotplug/rpaphp_core.c
index 18627bb..e350264 100644
--- a/drivers/pci/hotplug/rpaphp_core.c
+++ b/drivers/pci/hotplug/rpaphp_core.c
@@ -239,6 +239,8 @@  static int rpaphp_check_drc_props_v2(struct device_node *dn, char *drc_name,
 	value = of_prop_next_u32(info, NULL, &entries);
 	if (!value)
 		return -EINVAL;
+	else
+		value++;
 
 	for (j = 0; j < entries; j++) {
 		of_read_drc_info_cell(&info, &value, &drc);