Re: [PATCH V6 6/6] clk: imx6sl: Fix build warning reported by kernel test robot

From: Stephen Boyd
Date: Wed Jul 15 2020 - 21:00:20 EST


Quoting Anson Huang (2020-07-06 22:09:39)
> Use readl_relaxed() instead of __raw_readl(), and use BIT(x)
> instead of (1 << X) to fix below build warning reported by kernel
> test robot:
>
> drivers/clk/imx/clk-imx6sl.c:149:49: warning: Shifting signed 32-bit
> value by 31 bits is undefined behaviour [shiftTooManyBitsSigned]
> while (!(__raw_readl(anatop_base + PLL_ARM) & BM_PLL_ARM_LOCK))
>
> Signed-off-by: Anson Huang <Anson.Huang@xxxxxxx>
> Reported-by: kernel test robot <lkp@xxxxxxxxx>
> ---

The subject is poor. Please improve it so that it summarizes the change
instead of the reaction to a warning from a robot.

> New patch.
> ---
> drivers/clk/imx/clk-imx6sl.c | 15 ++++++++-------
> 1 file changed, 8 insertions(+), 7 deletions(-)
>

This should come earlier in the series too so that the build warning
doesn't come out before this patch is applied.