6.6-stable review patch. If anyone has any objections, please let me know.
------------------
From: Satya Priya Kakitapalli <quic_skakitap@xxxxxxxxxxx>
commit 85e8ee59dfde1a7b847fbed0778391392cd985cb upstream.
Currently, clk_zonda_pll_set_rate polls for the PLL to lock even if the
PLL is disabled. However, if the PLL is disabled then LOCK_DET will
never assert and we'll return an error. There is no reason to poll
LOCK_DET if the PLL is already disabled, so skip polling in this case.
Fixes: f21b6bfecc27 ("clk: qcom: clk-alpha-pll: add support for zonda pll")
Cc: stable@xxxxxxxxxxxxxxx
Signed-off-by: Satya Priya Kakitapalli <quic_skakitap@xxxxxxxxxxx>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@xxxxxxxxxx>
Link: https://lore.kernel.org/r/20240731062916.2680823-4-quic_skakitap@xxxxxxxxxxx
Signed-off-by: Bjorn Andersson <andersson@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/clk/qcom/clk-alpha-pll.c | 3 +++
1 file changed, 3 insertions(+)
--- a/drivers/clk/qcom/clk-alpha-pll.c
+++ b/drivers/clk/qcom/clk-alpha-pll.c
@@ -2062,6 +2062,9 @@ static int clk_zonda_pll_set_rate(struct
regmap_write(pll->clkr.regmap, PLL_ALPHA_VAL(pll), a);
regmap_write(pll->clkr.regmap, PLL_L_VAL(pll), l);
+ if (!clk_hw_is_enabled(hw))
+ return 0;
+
/* Wait before polling for the frequency latch */
udelay(5);
