[RFC PATCH 4/9] PCI: rpaphp: fix up pointer to first drc-info entry
From: Tyrel Datwyler <tyreld@linux.ibm.com>
Date: 2019-10-01 06:22:32
Also in:
linux-pci
Subsystem:
ibm power pci hotplug driver for rpa-compliant ppc64 platform, linux for powerpc (32-bit and 64-bit), pci subsystem, the rest · Maintainers:
Tyrel Datwyler, Madhavan Srinivasan, Michael Ellerman, Bjorn Helgaas, Linus Torvalds
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(+)
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);
--
2.7.4