diff mbox series

[v2,4/9] PCI: rpaphp: Fix up pointer to first drc-info entry

Message ID 1573449697-5448-5-git-send-email-tyreld@linux.ibm.com (mailing list archive)
State Accepted
Commit 9723c25f99aff0451cfe6392e1b9fdd99d0bf9f0
Headers show
Series Fixes and Enablement of ibm,drc-info property | expand

Checks

Context Check Description
snowpatch_ozlabs/apply_patch success Successfully applied on branch powerpc/merge (85c5b0984ebb104ec7a0a853ec1e63c19f500313)
snowpatch_ozlabs/checkpatch success total: 0 errors, 0 warnings, 0 checks, 8 lines checked

Commit Message

Tyrel Datwyler Nov. 11, 2019, 5:21 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(), but the helper function
expects that value to be pointing at the first element of an entry.

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(+)
diff mbox series

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);