[PATCH] clk: bcm2835: fix bcm2835_clock_choose_div

Stefan Wahren
2022-04-28T18:31:28Z

The commit 09e3b18ca5de ("clk: bcm2835: Remove unused variable")
accidentially breaks the behavior of bcm2835_clock_choose_div() and
booting of Raspberry Pi. The removed do_div macro call had side effects,
so we need to restore it.

Fixes: 09e3b18ca5de ("clk: bcm2835: Remove unused variable")
Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com>
---
drivers/clk/bcm/clk-bcm2835.c | 1 +
1 file changed, 1 insertion(+)

diff --git a/drivers/clk/bcm/clk-bcm2835.c b/drivers/clk/bcm/clk-bcm2835.c
index 3ad20e75fd23..48a1eb9f2d55 100644
--- a/drivers/clk/bcm/clk-bcm2835.c
+++ b/drivers/clk/bcm/clk-bcm2835.c
@@ -941,6 +941,7 @@ static u32 bcm2835_clock_choose_div(struct clk_hw *hw,
u64 temp = (u64)parent_rate << CM_DIV_FRAC_BITS;
u32 div, mindiv, maxdiv;

+ do_div(temp, rate);
div = temp;
div &= ~unused_frac_mask;

--
2.25.1