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clk: k210: Fix k210_clk_set_parent() 

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: c6ca7616f7 ("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>
This commit is contained in:
Damien Le Moal 2021-06-22 15:45:02 +09:00 committed by Stephen Boyd
parent 2cdee50eda
commit faa0e30794
1 changed files with 1 additions and 0 deletions
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drivers/clk/clk-k210.c
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@ -722,6 +722,7 @@ static int k210_clk_set_parent(struct clk_hw *hw, u8 index)
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;