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    Subject[PATCH 5.13 085/800] clk: k210: Fix k210_clk_set_parent()
    Date
    From: Damien Le Moal <damien.lemoal@wdc.com>

    commit faa0e307948594b4379a86fff7fb2409067aed6f upstream.

    In k210_clk_set_parent(), add missing writel() call to update the mux
    register of a clock to change its parent. This also fixes a compilation
    warning with clang when compiling with W=1.

    Fixes: c6ca7616f7d5 ("clk: Add RISC-V Canaan Kendryte K210 clock driver")
    Cc: stable@vger.kernel.org
    Signed-off-by: Damien Le Moal <damien.lemoal@wdc.com>
    Link: https://lore.kernel.org/r/20210622064502.14841-1-damien.lemoal@wdc.com
    Signed-off-by: Stephen Boyd <sboyd@kernel.org>
    Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

    ---
    drivers/clk/clk-k210.c | 1 +
    1 file changed, 1 insertion(+)

    --- a/drivers/clk/clk-k210.c
    +++ b/drivers/clk/clk-k210.c
    @@ -722,6 +722,7 @@ static int k210_clk_set_parent(struct cl
    reg |= BIT(cfg->mux_bit);
    else
    reg &= ~BIT(cfg->mux_bit);
    + writel(reg, ksc->regs + cfg->mux_reg);
    spin_unlock_irqrestore(&ksc->clk_lock, flags);

    return 0;

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