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authorArnd Bergmann <arnd@arndb.de>2015-11-12 15:24:29 +0100
committerStephen Boyd <sboyd@codeaurora.org>2015-11-20 19:59:26 +0100
commit2dd52d7f6f9d9d03a82a68040ac3d221dd79af94 (patch)
treea0264e1dc6ebd13677d9c2a76203109dfabe4df9 /drivers/clk/st
parentclk: at91: Revert "keep slow clk enabled to prevent system hang" (diff)
downloadlinux-2dd52d7f6f9d9d03a82a68040ac3d221dd79af94.tar.xz
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clk: st: avoid uninitialized variable use
quadfs_pll_fs660c32_round_rate prints a few structure members that are never initialized, and also doesn't print the only one it cares about. We get a gcc warning about the ones that are printed: clk/st/clkgen-fsyn.c:560:93: warning: 'params.sdiv' may be used uninitialized in this function clk/st/clkgen-fsyn.c:560:93: warning: 'params.mdiv' may be used uninitialized in this function clk/st/clkgen-fsyn.c:560:93: warning: 'params.pe' may be used uninitialized in this function clk/st/clkgen-fsyn.c:560:93: warning: 'params.nsdiv' may be used uninitialized in this function This changes the code to no longer print uninitialized data, and for good measure it also prints the ndiv member that is being set. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Fixes: 5f7aa9071e93 ("clk: st: Support for QUADFS inside ClockGenB/C/D/E/F") Acked-by: Gabriel Fernandez <gabriel.fernandez@linaro.org> Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Diffstat (limited to 'drivers/clk/st')
-rw-r--r--drivers/clk/st/clkgen-fsyn.c17
1 files changed, 9 insertions, 8 deletions
diff --git a/drivers/clk/st/clkgen-fsyn.c b/drivers/clk/st/clkgen-fsyn.c
index 576cd0354d48..ccb324d97160 100644
--- a/drivers/clk/st/clkgen-fsyn.c
+++ b/drivers/clk/st/clkgen-fsyn.c
@@ -549,19 +549,20 @@ static int clk_fs660c32_vco_get_params(unsigned long input,
return 0;
}
-static long quadfs_pll_fs660c32_round_rate(struct clk_hw *hw, unsigned long rate
- , unsigned long *prate)
+static long quadfs_pll_fs660c32_round_rate(struct clk_hw *hw,
+ unsigned long rate,
+ unsigned long *prate)
{
struct stm_fs params;
- if (!clk_fs660c32_vco_get_params(*prate, rate, &params))
- clk_fs660c32_vco_get_rate(*prate, &params, &rate);
+ if (clk_fs660c32_vco_get_params(*prate, rate, &params))
+ return rate;
- pr_debug("%s: %s new rate %ld [sdiv=0x%x,md=0x%x,pe=0x%x,nsdiv3=%u]\n",
+ clk_fs660c32_vco_get_rate(*prate, &params, &rate);
+
+ pr_debug("%s: %s new rate %ld [ndiv=%u]\n",
__func__, clk_hw_get_name(hw),
- rate, (unsigned int)params.sdiv,
- (unsigned int)params.mdiv,
- (unsigned int)params.pe, (unsigned int)params.nsdiv);
+ rate, (unsigned int)params.ndiv);
return rate;
}