From: Daniel Golle <daniel@makrotopia.org>
To: Michael Turquette <mturquette@baylibre.com>,
Stephen Boyd <sboyd@kernel.org>,
Matthias Brugger <matthias.bgg@gmail.com>,
AngeloGioacchino Del Regno
<angelogioacchino.delregno@collabora.com>,
Daniel Golle <daniel@makrotopia.org>,
Sam Shih <sam.shih@mediatek.com>,
linux-clk@vger.kernel.org, linux-kernel@vger.kernel.org,
linux-arm-kernel@lists.infradead.org,
linux-mediatek@lists.infradead.org
Subject: [PATCH] clk: mediatek: mt7988: use MUX_CLR_SET_UPD for gate-less muxes
Date: Wed, 18 Mar 2026 02:48:41 +0000 [thread overview]
Message-ID: <869a8a99bbde357fb4f2175f99e605c3e1597640.1773801987.git.daniel@makrotopia.org> (raw)
All 18 muxes in the infra_muxes[] array are pure mux selectors without
a clock gate, yet they were defined using MUX_GATE_CLR_SET_UPD with
gate_shift = -1.
This macro assigns mtk_mux_gate_clr_set_upd_ops, whose
enable/disable/is_enabled callbacks perform BIT(gate_shift). Since
gate_shift is stored as u8, the -1 truncates to 255, causing a
shift-out-of-bounds at runtime:
UBSAN: shift-out-of-bounds in drivers/clk/mediatek/clk-mux.c:76:8
shift exponent 255 is too large for 64-bit type 'long unsigned int'
UBSAN: shift-out-of-bounds in drivers/clk/mediatek/clk-mux.c:102:4
shift exponent 255 is too large for 64-bit type 'long unsigned int'
UBSAN: shift-out-of-bounds in drivers/clk/mediatek/clk-mux.c:122:16
shift exponent 255 is too large for 64-bit type 'long unsigned int'
Switch these definitions to MUX_CLR_SET_UPD, which uses
mtk_mux_clr_set_upd_ops (no gate callbacks). The actual clock gating
for these peripherals is handled by the separate GATE_INFRA* definitions
further down.
Fixes: 4b4719437d85f ("clk: mediatek: add drivers for MT7988 SoC")
Signed-off-by: Daniel Golle <daniel@makrotopia.org>
---
drivers/clk/mediatek/clk-mt7988-infracfg.c | 84 +++++++++++-----------
1 file changed, 42 insertions(+), 42 deletions(-)
diff --git a/drivers/clk/mediatek/clk-mt7988-infracfg.c b/drivers/clk/mediatek/clk-mt7988-infracfg.c
index c40e18c27f12e..57203d08ac265 100644
--- a/drivers/clk/mediatek/clk-mt7988-infracfg.c
+++ b/drivers/clk/mediatek/clk-mt7988-infracfg.c
@@ -56,49 +56,49 @@ static const char *const infra_pcie_gfmux_tl_ck_o_p3_parents[] __initconst = {
static const struct mtk_mux infra_muxes[] = {
/* MODULE_CLK_SEL_0 */
- MUX_GATE_CLR_SET_UPD(CLK_INFRA_MUX_UART0_SEL, "infra_mux_uart0_sel",
- infra_mux_uart0_parents, 0x0018, 0x0010, 0x0014, 0, 1, -1, -1, -1),
- MUX_GATE_CLR_SET_UPD(CLK_INFRA_MUX_UART1_SEL, "infra_mux_uart1_sel",
- infra_mux_uart1_parents, 0x0018, 0x0010, 0x0014, 1, 1, -1, -1, -1),
- MUX_GATE_CLR_SET_UPD(CLK_INFRA_MUX_UART2_SEL, "infra_mux_uart2_sel",
- infra_mux_uart2_parents, 0x0018, 0x0010, 0x0014, 2, 1, -1, -1, -1),
- MUX_GATE_CLR_SET_UPD(CLK_INFRA_MUX_SPI0_SEL, "infra_mux_spi0_sel", infra_mux_spi0_parents,
- 0x0018, 0x0010, 0x0014, 4, 1, -1, -1, -1),
- MUX_GATE_CLR_SET_UPD(CLK_INFRA_MUX_SPI1_SEL, "infra_mux_spi1_sel", infra_mux_spi1_parents,
- 0x0018, 0x0010, 0x0014, 5, 1, -1, -1, -1),
- MUX_GATE_CLR_SET_UPD(CLK_INFRA_MUX_SPI2_SEL, "infra_mux_spi2_sel", infra_mux_spi0_parents,
- 0x0018, 0x0010, 0x0014, 6, 1, -1, -1, -1),
- MUX_GATE_CLR_SET_UPD(CLK_INFRA_PWM_SEL, "infra_pwm_sel", infra_pwm_bck_parents, 0x0018,
- 0x0010, 0x0014, 14, 2, -1, -1, -1),
- MUX_GATE_CLR_SET_UPD(CLK_INFRA_PWM_CK1_SEL, "infra_pwm_ck1_sel", infra_pwm_bck_parents,
- 0x0018, 0x0010, 0x0014, 16, 2, -1, -1, -1),
- MUX_GATE_CLR_SET_UPD(CLK_INFRA_PWM_CK2_SEL, "infra_pwm_ck2_sel", infra_pwm_bck_parents,
- 0x0018, 0x0010, 0x0014, 18, 2, -1, -1, -1),
- MUX_GATE_CLR_SET_UPD(CLK_INFRA_PWM_CK3_SEL, "infra_pwm_ck3_sel", infra_pwm_bck_parents,
- 0x0018, 0x0010, 0x0014, 20, 2, -1, -1, -1),
- MUX_GATE_CLR_SET_UPD(CLK_INFRA_PWM_CK4_SEL, "infra_pwm_ck4_sel", infra_pwm_bck_parents,
- 0x0018, 0x0010, 0x0014, 22, 2, -1, -1, -1),
- MUX_GATE_CLR_SET_UPD(CLK_INFRA_PWM_CK5_SEL, "infra_pwm_ck5_sel", infra_pwm_bck_parents,
- 0x0018, 0x0010, 0x0014, 24, 2, -1, -1, -1),
- MUX_GATE_CLR_SET_UPD(CLK_INFRA_PWM_CK6_SEL, "infra_pwm_ck6_sel", infra_pwm_bck_parents,
- 0x0018, 0x0010, 0x0014, 26, 2, -1, -1, -1),
- MUX_GATE_CLR_SET_UPD(CLK_INFRA_PWM_CK7_SEL, "infra_pwm_ck7_sel", infra_pwm_bck_parents,
- 0x0018, 0x0010, 0x0014, 28, 2, -1, -1, -1),
- MUX_GATE_CLR_SET_UPD(CLK_INFRA_PWM_CK8_SEL, "infra_pwm_ck8_sel", infra_pwm_bck_parents,
- 0x0018, 0x0010, 0x0014, 30, 2, -1, -1, -1),
+ MUX_CLR_SET_UPD(CLK_INFRA_MUX_UART0_SEL, "infra_mux_uart0_sel",
+ infra_mux_uart0_parents, 0x0018, 0x0010, 0x0014, 0, 1, -1, -1),
+ MUX_CLR_SET_UPD(CLK_INFRA_MUX_UART1_SEL, "infra_mux_uart1_sel",
+ infra_mux_uart1_parents, 0x0018, 0x0010, 0x0014, 1, 1, -1, -1),
+ MUX_CLR_SET_UPD(CLK_INFRA_MUX_UART2_SEL, "infra_mux_uart2_sel",
+ infra_mux_uart2_parents, 0x0018, 0x0010, 0x0014, 2, 1, -1, -1),
+ MUX_CLR_SET_UPD(CLK_INFRA_MUX_SPI0_SEL, "infra_mux_spi0_sel",
+ infra_mux_spi0_parents, 0x0018, 0x0010, 0x0014, 4, 1, -1, -1),
+ MUX_CLR_SET_UPD(CLK_INFRA_MUX_SPI1_SEL, "infra_mux_spi1_sel",
+ infra_mux_spi1_parents, 0x0018, 0x0010, 0x0014, 5, 1, -1, -1),
+ MUX_CLR_SET_UPD(CLK_INFRA_MUX_SPI2_SEL, "infra_mux_spi2_sel",
+ infra_mux_spi0_parents, 0x0018, 0x0010, 0x0014, 6, 1, -1, -1),
+ MUX_CLR_SET_UPD(CLK_INFRA_PWM_SEL, "infra_pwm_sel",
+ infra_pwm_bck_parents, 0x0018, 0x0010, 0x0014, 14, 2, -1, -1),
+ MUX_CLR_SET_UPD(CLK_INFRA_PWM_CK1_SEL, "infra_pwm_ck1_sel",
+ infra_pwm_bck_parents, 0x0018, 0x0010, 0x0014, 16, 2, -1, -1),
+ MUX_CLR_SET_UPD(CLK_INFRA_PWM_CK2_SEL, "infra_pwm_ck2_sel",
+ infra_pwm_bck_parents, 0x0018, 0x0010, 0x0014, 18, 2, -1, -1),
+ MUX_CLR_SET_UPD(CLK_INFRA_PWM_CK3_SEL, "infra_pwm_ck3_sel",
+ infra_pwm_bck_parents, 0x0018, 0x0010, 0x0014, 20, 2, -1, -1),
+ MUX_CLR_SET_UPD(CLK_INFRA_PWM_CK4_SEL, "infra_pwm_ck4_sel",
+ infra_pwm_bck_parents, 0x0018, 0x0010, 0x0014, 22, 2, -1, -1),
+ MUX_CLR_SET_UPD(CLK_INFRA_PWM_CK5_SEL, "infra_pwm_ck5_sel",
+ infra_pwm_bck_parents, 0x0018, 0x0010, 0x0014, 24, 2, -1, -1),
+ MUX_CLR_SET_UPD(CLK_INFRA_PWM_CK6_SEL, "infra_pwm_ck6_sel",
+ infra_pwm_bck_parents, 0x0018, 0x0010, 0x0014, 26, 2, -1, -1),
+ MUX_CLR_SET_UPD(CLK_INFRA_PWM_CK7_SEL, "infra_pwm_ck7_sel",
+ infra_pwm_bck_parents, 0x0018, 0x0010, 0x0014, 28, 2, -1, -1),
+ MUX_CLR_SET_UPD(CLK_INFRA_PWM_CK8_SEL, "infra_pwm_ck8_sel",
+ infra_pwm_bck_parents, 0x0018, 0x0010, 0x0014, 30, 2, -1, -1),
/* MODULE_CLK_SEL_1 */
- MUX_GATE_CLR_SET_UPD(CLK_INFRA_PCIE_GFMUX_TL_O_P0_SEL, "infra_pcie_gfmux_tl_o_p0_sel",
- infra_pcie_gfmux_tl_ck_o_p0_parents, 0x0028, 0x0020, 0x0024, 0, 2, -1,
- -1, -1),
- MUX_GATE_CLR_SET_UPD(CLK_INFRA_PCIE_GFMUX_TL_O_P1_SEL, "infra_pcie_gfmux_tl_o_p1_sel",
- infra_pcie_gfmux_tl_ck_o_p1_parents, 0x0028, 0x0020, 0x0024, 2, 2, -1,
- -1, -1),
- MUX_GATE_CLR_SET_UPD(CLK_INFRA_PCIE_GFMUX_TL_O_P2_SEL, "infra_pcie_gfmux_tl_o_p2_sel",
- infra_pcie_gfmux_tl_ck_o_p2_parents, 0x0028, 0x0020, 0x0024, 4, 2, -1,
- -1, -1),
- MUX_GATE_CLR_SET_UPD(CLK_INFRA_PCIE_GFMUX_TL_O_P3_SEL, "infra_pcie_gfmux_tl_o_p3_sel",
- infra_pcie_gfmux_tl_ck_o_p3_parents, 0x0028, 0x0020, 0x0024, 6, 2, -1,
- -1, -1),
+ MUX_CLR_SET_UPD(CLK_INFRA_PCIE_GFMUX_TL_O_P0_SEL, "infra_pcie_gfmux_tl_o_p0_sel",
+ infra_pcie_gfmux_tl_ck_o_p0_parents, 0x0028, 0x0020, 0x0024, 0, 2,
+ -1, -1),
+ MUX_CLR_SET_UPD(CLK_INFRA_PCIE_GFMUX_TL_O_P1_SEL, "infra_pcie_gfmux_tl_o_p1_sel",
+ infra_pcie_gfmux_tl_ck_o_p1_parents, 0x0028, 0x0020, 0x0024, 2, 2,
+ -1, -1),
+ MUX_CLR_SET_UPD(CLK_INFRA_PCIE_GFMUX_TL_O_P2_SEL, "infra_pcie_gfmux_tl_o_p2_sel",
+ infra_pcie_gfmux_tl_ck_o_p2_parents, 0x0028, 0x0020, 0x0024, 4, 2,
+ -1, -1),
+ MUX_CLR_SET_UPD(CLK_INFRA_PCIE_GFMUX_TL_O_P3_SEL, "infra_pcie_gfmux_tl_o_p3_sel",
+ infra_pcie_gfmux_tl_ck_o_p3_parents, 0x0028, 0x0020, 0x0024, 6, 2,
+ -1, -1),
};
static const struct mtk_gate_regs infra0_cg_regs = {
--
2.53.0
next reply other threads:[~2026-03-18 2:48 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-03-18 2:48 Daniel Golle [this message]
2026-03-18 12:30 ` AngeloGioacchino Del Regno
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