If a clk_rcg2 has a parent, it should also have parent_map defined,
otherwise we'll get a NULL pointer dereference when calling clk_set_rate
like the following:
[ 3.388105] Call trace:
[ 3.390664] qcom_find_src_index+0x3c/0x70 (P)
[ 3.395301] qcom_find_src_index+0x1c/0x70 (L)
[ 3.399934] _freq_tbl_determine_rate+0x48/0x100
[ 3.404753] clk_rcg2_determine_rate+0x1c/0x28
[ 3.409387] clk_core_determine_round_nolock+0x58/0xe4
[ 3.421414] clk_core_round_rate_nolock+0x48/0xfc
[ 3.432974] clk_core_round_rate_nolock+0xd0/0xfc
[ 3.444483] clk_core_set_rate_nolock+0x8c/0x300
[ 3.455886] clk_set_rate+0x38/0x14c
Add the parent_map property for the clock where it's missing and also
un-inline the parent_data as well to keep the matching parent_map and
parent_data together.
Fixes: 837519775f1d ("clk: qcom: Add display clock controller driver for SM6350")
Cc: <stable@xxxxxxxxxxxxxxx>
Signed-off-by: Luca Weiss <luca.weiss@xxxxxxxxxxxxx>
---
drivers/clk/qcom/dispcc-sm6350.c | 7 +++----
1 file changed, 3 insertions(+), 4 deletions(-)
diff --git a/drivers/clk/qcom/dispcc-sm6350.c b/drivers/clk/qcom/dispcc-sm6350.c
index 50facb36701af99923584f1ca1549df6a70f06d9..2bc6b5f99f5725bf56c63623c3d5c16c25879d9e 100644
--- a/drivers/clk/qcom/dispcc-sm6350.c
+++ b/drivers/clk/qcom/dispcc-sm6350.c
@@ -187,13 +187,12 @@ static struct clk_rcg2 disp_cc_mdss_dp_aux_clk_src = {
.cmd_rcgr = 0x1144,
.mnd_width = 0,
.hid_width = 5,
+ .parent_map = disp_cc_parent_map_6,
.freq_tbl = ftbl_disp_cc_mdss_dp_aux_clk_src,
.clkr.hw.init = &(struct clk_init_data){
.name = "disp_cc_mdss_dp_aux_clk_src",
- .parent_data = &(const struct clk_parent_data){
- .fw_name = "bi_tcxo",
- },
- .num_parents = 1,
+ .parent_data = disp_cc_parent_data_6,
+ .num_parents = ARRAY_SIZE(disp_cc_parent_data_6),
.ops = &clk_rcg2_ops,
},
};
--
2.47.1
