diff options
| author |   周琰杰 (Zhou Yanjie) <zhouyanjie@wanyeetech.com> | 2020-05-28 11:15:43 +0800 |
|---|---|---|
| committer |   Stephen Boyd <sboyd@kernel.org> | 2020-05-28 16:13:15 -0700 |
| commit | 15e3ae36f71eb6564b5caa5cd02e0d0353db5b85 (patch) | |
| tree | d55ffb491681920da69b4d039da607973e47e2a4 /drivers/clk/ingenic | |
| parent | Linux 5.7-rc1 (diff) | |
| download | wireguard-linux-15e3ae36f71eb6564b5caa5cd02e0d0353db5b85.tar.xz wireguard-linux-15e3ae36f71eb6564b5caa5cd02e0d0353db5b85.zip | |
clk: Ingenic: Remove unnecessary spinlock when reading registers.
It is not necessary to use spinlock when reading registers,
so remove it from cgu.c.
Suggested-by: Paul Cercueil <paul@crapouillou.net>
Suggested-by: Paul Burton <paulburton@kernel.org>
Signed-off-by: 周琰杰 (Zhou Yanjie) <zhouyanjie@wanyeetech.com>
Reviewed-by: Paul Cercueil <paul@crapouillou.net>
Link: https://lkml.kernel.org/r/20200528031549.13846-2-zhouyanjie@wanyeetech.com
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
Diffstat (limited to 'drivers/clk/ingenic')
| -rw-r--r-- | drivers/clk/ingenic/cgu.c | 12 |
1 files changed, 1 insertions, 11 deletions
diff --git a/drivers/clk/ingenic/cgu.c b/drivers/clk/ingenic/cgu.c index 6e963031cd87..ab1302ad1450 100644 --- a/drivers/clk/ingenic/cgu.c +++ b/drivers/clk/ingenic/cgu.c @@ -76,16 +76,13 @@ ingenic_pll_recalc_rate(struct clk_hw *hw, unsigned long parent_rate) const struct ingenic_cgu_pll_info *pll_info; unsigned m, n, od_enc, od; bool bypass; - unsigned long flags; u32 ctl; clk_info = &cgu->clock_info[ingenic_clk->idx]; BUG_ON(clk_info->type != CGU_CLK_PLL); pll_info = &clk_info->pll; - spin_lock_irqsave(&cgu->lock, flags); ctl = readl(cgu->base + pll_info->reg); - spin_unlock_irqrestore(&cgu->lock, flags); m = (ctl >> pll_info->m_shift) & GENMASK(pll_info->m_bits - 1, 0); m += pll_info->m_offset; @@ -259,12 +256,9 @@ static int ingenic_pll_is_enabled(struct clk_hw *hw) struct ingenic_cgu *cgu = ingenic_clk->cgu; const struct ingenic_cgu_clk_info *clk_info = to_clk_info(ingenic_clk); const struct ingenic_cgu_pll_info *pll_info = &clk_info->pll; - unsigned long flags; u32 ctl; - spin_lock_irqsave(&cgu->lock, flags); ctl = readl(cgu->base + pll_info->reg); - spin_unlock_irqrestore(&cgu->lock, flags); return !!(ctl & BIT(pll_info->enable_bit)); } @@ -562,16 +556,12 @@ static int ingenic_clk_is_enabled(struct clk_hw *hw) struct ingenic_clk *ingenic_clk = to_ingenic_clk(hw); struct ingenic_cgu *cgu = ingenic_clk->cgu; const struct ingenic_cgu_clk_info *clk_info; - unsigned long flags; int enabled = 1; clk_info = &cgu->clock_info[ingenic_clk->idx]; - if (clk_info->type & CGU_CLK_GATE) { - spin_lock_irqsave(&cgu->lock, flags); + if (clk_info->type & CGU_CLK_GATE) enabled = !ingenic_cgu_gate_get(cgu, &clk_info->gate); - spin_unlock_irqrestore(&cgu->lock, flags); - } return enabled; } |