[PATCH AUTOSEL 4.19 04/15] ARM: OMAP1: clock: Fix UART rate reporting algorithm

From: Sasha Levin
Date: Wed Jun 01 2022 - 10:11:04 EST


From: Janusz Krzysztofik <jmkrzyszt@xxxxxxxxx>

[ Upstream commit 338d5d476cde853dfd97378d20496baabc2ce3c0 ]

Since its introduction to the mainline kernel, omap1_uart_recalc() helper
makes incorrect use of clk->enable_bit as a ready to use bitmap mask while
it only provides the bit number. Fix it.

Signed-off-by: Janusz Krzysztofik <jmkrzyszt@xxxxxxxxx>
Acked-by: Tony Lindgren <tony@xxxxxxxxxxx>
Signed-off-by: Arnd Bergmann <arnd@xxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
arch/arm/mach-omap1/clock.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/arm/mach-omap1/clock.c b/arch/arm/mach-omap1/clock.c
index fa512413a471..b277409f303a 100644
--- a/arch/arm/mach-omap1/clock.c
+++ b/arch/arm/mach-omap1/clock.c
@@ -44,7 +44,7 @@ static DEFINE_SPINLOCK(clockfw_lock);
unsigned long omap1_uart_recalc(struct clk *clk)
{
unsigned int val = __raw_readl(clk->enable_reg);
- return val & clk->enable_bit ? 48000000 : 12000000;
+ return val & 1 << clk->enable_bit ? 48000000 : 12000000;
}

unsigned long omap1_sossi_recalc(struct clk *clk)
--
2.35.1