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thermal: armada: Fix -Wshift-negative-value

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Clang produces the following warning

drivers/thermal/armada_thermal.c:270:33: warning: shifting a negative
signed value is undefined [-Wshift-negative-value]
1 warning        reg &= ~CONTROL1_TSEN_AVG_MASK <<
CONTROL1_TSEN_AVG_SHIFT; generated
.
               ~~~~~~~~~~~~~~~~~~~~~~~ ^

CONTROL1_TSEN_AVG_SHIFT is defined to be zero.
Since shifting by zero does nothing this variable can be removed.

Cc: [email protected]
Link: https://github.com/ClangBuiltLinux/linux/issues/532
Signed-off-by: Nathan Huckleberry <[email protected]>
Reviewed-by: Daniel Lezcano <[email protected]>
Acked-by: Miquel Raynal <[email protected]>
Signed-off-by: Zhang Rui <[email protected]>
This commit is contained in:
Nathan Huckleberry 2019-06-13 11:49:23 -07:00 • committed by Zhang Rui
commit 9aee371313
1 changed files with 2 additions and 3 deletions
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5
drivers/thermal/armada_thermal.c
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@ -53,7 +53,6 @@
#define CONTROL0_TSEN_MODE_EXTERNAL 0x2
#define CONTROL0_TSEN_MODE_MASK 0x3
#define CONTROL1_TSEN_AVG_SHIFT 0
#define CONTROL1_TSEN_AVG_MASK 0x7
#define CONTROL1_EXT_TSEN_SW_RESET BIT(7)
#define CONTROL1_EXT_TSEN_HW_RESETn BIT(8)
@ -267,8 +266,8 @@ static void armada_cp110_init(struct platform_device *pdev,
/* Average the output value over 2^1 = 2 samples */
regmap_read(priv->syscon, data->syscon_control1_off, &reg);
reg &= ~CONTROL1_TSEN_AVG_MASK << CONTROL1_TSEN_AVG_SHIFT;
reg |= 1 << CONTROL1_TSEN_AVG_SHIFT;
reg &= ~CONTROL1_TSEN_AVG_MASK;
reg |= 1;
regmap_write(priv->syscon, data->syscon_control1_off, reg);
}