diff mbox series

[v2,1/7] clk: nxp: Remove unused variable

Message ID 20220205103613.1216218-2-j.neuschaefer@gmx.net (mailing list archive)
State New, archived
Headers show
Series clk: Declare mux tables as const u32[] | expand

Commit Message

Jonathan Neuschäfer Feb. 5, 2022, 10:36 a.m. UTC 
GCC warns:

> ../drivers/clk/nxp/clk-lpc18xx-cgu.c: In function ‘lpc18xx_pll1_recalc_rate’:
> ../drivers/clk/nxp/clk-lpc18xx-cgu.c:460:13: warning: variable ‘stat’ set but not used [-Wunused-but-set-variable]
>   460 |         u32 stat, ctrl;
>       |             ^~~~

Get rid of the (apparently) useless read from the PLL1_STAT register and
the declaration of stat.

Reported-by: kernel test robot <lkp@intel.com>
Fixes: b04e0b8fd5443 ("clk: add lpc18xx cgu clk driver")
Signed-off-by: Jonathan Neuschäfer <j.neuschaefer@gmx.net>
---

If the register read is actually useful because of a side-effect, please
speak up.


v2:
- New patch to address this warning
---
 drivers/clk/nxp/clk-lpc18xx-cgu.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

--
2.34.1

Comments

Stephen Boyd Feb. 26, 2022, 1 a.m. UTC | #1 
Quoting Jonathan Neuschäfer (2022-02-05 02:36:07)
> GCC warns:
> 
> > ../drivers/clk/nxp/clk-lpc18xx-cgu.c: In function ‘lpc18xx_pll1_recalc_rate’:
> > ../drivers/clk/nxp/clk-lpc18xx-cgu.c:460:13: warning: variable ‘stat’ set but not used [-Wunused-but-set-variable]
> >   460 |         u32 stat, ctrl;
> >       |             ^~~~
> 
> Get rid of the (apparently) useless read from the PLL1_STAT register and
> the declaration of stat.
> 
> Reported-by: kernel test robot <lkp@intel.com>
> Fixes: b04e0b8fd5443 ("clk: add lpc18xx cgu clk driver")
> Signed-off-by: Jonathan Neuschäfer <j.neuschaefer@gmx.net>
> ---

Applied to clk-next
diff mbox series

Patch

diff --git a/drivers/clk/nxp/clk-lpc18xx-cgu.c b/drivers/clk/nxp/clk-lpc18xx-cgu.c
index 8b686da5577b3..349eebf69ed93 100644
--- a/drivers/clk/nxp/clk-lpc18xx-cgu.c
+++ b/drivers/clk/nxp/clk-lpc18xx-cgu.c
@@ -457,9 +457,8 @@  static unsigned long lpc18xx_pll1_recalc_rate(struct clk_hw *hw,
 	struct lpc18xx_pll *pll = to_lpc_pll(hw);
 	u16 msel, nsel, psel;
 	bool direct, fbsel;
-	u32 stat, ctrl;
+	u32 ctrl;

-	stat = readl(pll->reg + LPC18XX_CGU_PLL1_STAT);
 	ctrl = readl(pll->reg + LPC18XX_CGU_PLL1_CTRL);

 	direct = (ctrl & LPC18XX_PLL1_CTRL_DIRECT) ? true : false;