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[144.178.202.138]) by smtp.gmail.com with ESMTPSA id 5b1f17b1804b1-436611ea3e0sm40610375e9.7.2024.12.20.01.03.46 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 20 Dec 2024 01:03:46 -0800 (PST) From: Luca Weiss Date: Fri, 20 Dec 2024 10:03:31 +0100 Subject: [PATCH 2/2] clk: qcom: dispcc-sm6350: Add missing parent_map for a clock Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Message-Id: <20241220-sm6350-parent_map-v1-2-64f3d04cb2eb@fairphone.com> References: <20241220-sm6350-parent_map-v1-0-64f3d04cb2eb@fairphone.com> In-Reply-To: <20241220-sm6350-parent_map-v1-0-64f3d04cb2eb@fairphone.com> To: Bjorn Andersson , Michael Turquette , Stephen Boyd , AngeloGioacchino Del Regno , Konrad Dybcio Cc: ~postmarketos/upstreaming@lists.sr.ht, phone-devel@vger.kernel.org, linux-arm-msm@vger.kernel.org, linux-clk@vger.kernel.org, linux-kernel@vger.kernel.org, Luca Weiss , stable@vger.kernel.org X-Mailer: b4 0.14.2 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 SM= 6350") Cc: Signed-off-by: Luca Weiss Reviewed-by: Konrad Dybcio --- 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-sm6= 350.c index 50facb36701af99923584f1ca1549df6a70f06d9..2bc6b5f99f5725bf56c63623c3d= 5c16c25879d9e 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 = =3D { .cmd_rcgr =3D 0x1144, .mnd_width =3D 0, .hid_width =3D 5, + .parent_map =3D disp_cc_parent_map_6, .freq_tbl =3D ftbl_disp_cc_mdss_dp_aux_clk_src, .clkr.hw.init =3D &(struct clk_init_data){ .name =3D "disp_cc_mdss_dp_aux_clk_src", - .parent_data =3D &(const struct clk_parent_data){ - .fw_name =3D "bi_tcxo", - }, - .num_parents =3D 1, + .parent_data =3D disp_cc_parent_data_6, + .num_parents =3D ARRAY_SIZE(disp_cc_parent_data_6), .ops =3D &clk_rcg2_ops, }, }; --=20 2.47.1