[PATCH] clk: qcom: ipq8074: fix PCI-E clock oops

From: Robert Marko
Date: Tue May 18 2021 - 13:52:03 EST


Fix PCI-E clock related kernel oops that are causes by missing
parent_names.

Without the use of parent_names kernel will panic on
clk_core_get_parent_by_index() due to a NULL pointer.

Without this earlycon is needed to even catch the OOPS as it will reset
the board before serial is initialized.

Fixes: f0cfcf1ade20 ("clk: qcom: ipq8074: Add missing clocks for pcie")
Signed-off-by: Robert Marko <robimarko@xxxxxxxxx>
---
drivers/clk/qcom/gcc-ipq8074.c | 11 +++++------
1 file changed, 5 insertions(+), 6 deletions(-)

diff --git a/drivers/clk/qcom/gcc-ipq8074.c b/drivers/clk/qcom/gcc-ipq8074.c
index 0c619ed35c82..8d8b1717a203 100644
--- a/drivers/clk/qcom/gcc-ipq8074.c
+++ b/drivers/clk/qcom/gcc-ipq8074.c
@@ -4357,8 +4357,7 @@ static struct clk_rcg2 pcie0_rchng_clk_src = {
.parent_map = gcc_xo_gpll0_map,
.clkr.hw.init = &(struct clk_init_data){
.name = "pcie0_rchng_clk_src",
- .parent_hws = (const struct clk_hw *[]) {
- &gpll0.clkr.hw },
+ .parent_names = gcc_xo_gpll0,
.num_parents = 2,
.ops = &clk_rcg2_ops,
},
@@ -4372,8 +4371,8 @@ static struct clk_branch gcc_pcie0_rchng_clk = {
.enable_mask = BIT(1),
.hw.init = &(struct clk_init_data){
.name = "gcc_pcie0_rchng_clk",
- .parent_hws = (const struct clk_hw *[]){
- &pcie0_rchng_clk_src.clkr.hw,
+ .parent_names = (const char *[]){
+ "pcie0_rchng_clk_src",
},
.num_parents = 1,
.flags = CLK_SET_RATE_PARENT,
@@ -4390,8 +4389,8 @@ static struct clk_branch gcc_pcie0_axi_s_bridge_clk = {
.enable_mask = BIT(0),
.hw.init = &(struct clk_init_data){
.name = "gcc_pcie0_axi_s_bridge_clk",
- .parent_hws = (const struct clk_hw *[]){
- &pcie0_axi_clk_src.clkr.hw,
+ .parent_names = (const char *[]){
+ "pcie0_axi_clk_src"
},
.num_parents = 1,
.flags = CLK_SET_RATE_PARENT,
--
2.31.1