=m. Closes: https://lore.kernel.org/r/b71596c7-461b-44b6-89ab-3cfbd492639f@solid-run.com Signed-off-by: Josua Mayer Reviewed-by: Andrew Lunn Signed-off-by: Gregory CLEMENT Signed-off-by: Sasha Levin --- drivers/clk/mvebu/cp110-system-controller.c | 20 ++++++++++++++++++++ 1 file changed, 20 insertions(+) diff --git a/drivers/clk/mvebu/cp110-system-controller.c b/drivers/clk/mvebu/cp110-system-controller.c index 84c8900542e4..b477396917ad 100644 --- a/drivers/clk/mvebu/cp110-system-controller.c +++ b/drivers/clk/mvebu/cp110-system-controller.c @@ -110,6 +110,25 @@ static const char * const gate_base_names[] = { [CP110_GATE_EIP197] = "eip197" }; +static unsigned long gate_flags(const u8 bit_idx) +{ + switch (bit_idx) { + case CP110_GATE_PCIE_X1_0: + case CP110_GATE_PCIE_X1_1: + case CP110_GATE_PCIE_X4: + /* + * If a port had an active link at boot time, stopping + * the clock creates a failed state from which controller + * driver can not recover. + * Prevent stopping this clock till after a driver has taken + * ownership. + */ + return CLK_IGNORE_UNUSED; + default: + return 0; + } +}; + struct cp110_gate_clk { struct clk_hw hw; struct regmap *regmap; @@ -171,6 +190,7 @@ static struct clk_hw *cp110_register_gate(const char *name, init.ops = &cp110_gate_ops; init.parent_names = &parent_name; init.num_parents = 1; + init.flags = gate_flags(bit_idx); gate->regmap = regmap; gate->bit_idx = bit_idx; -- 2.51.0[PATCH 5.15 260/554] clk: mvebu: cp110 add CLK_IGNORE_UNUSED to pcie_x10, pcie_x11 & pcie_x4Greg Kroah-Hartman undefinedstable@vger.kernel.org undefined undefined undefined undefined undefined undefined‘;…¯r