From f896ee51b93e192fa38a62d8cef8c5e9bd4adf68 Mon Sep 17 00:00:00 2001 From: Colin Ian King Date: Tue, 7 Jan 2020 17:52:34 +0000 Subject: [PATCH] misc: tsl2550: remove redundant initialization to variable r The variable r is being initialized with a value that is never read and it is being updated later with a new value. Remove the redundant initialization and move the declaration into a deeper code block. Addresses-Coverity: ("Unused value") Signed-off-by: Colin Ian King Link: https://lore.kernel.org/r/20200107175234.121298-1-colin.king@canonical.com Signed-off-by: Greg Kroah-Hartman --- drivers/misc/tsl2550.c | 12 +++++------- 1 file changed, 5 insertions(+), 7 deletions(-) diff --git a/drivers/misc/tsl2550.c b/drivers/misc/tsl2550.c index 09db397df287..6d71865c8042 100644 --- a/drivers/misc/tsl2550.c +++ b/drivers/misc/tsl2550.c @@ -148,16 +148,14 @@ static int tsl2550_calculate_lux(u8 ch0, u8 ch1) u16 c0 = count_lut[ch0]; u16 c1 = count_lut[ch1]; - /* - * Calculate ratio. - * Note: the "128" is a scaling factor - */ - u8 r = 128; - /* Avoid division by 0 and count 1 cannot be greater than count 0 */ if (c1 <= c0) if (c0) { - r = c1 * 128 / c0; + /* + * Calculate ratio. + * Note: the "128" is a scaling factor + */ + u8 r = c1 * 128 / c0; /* Calculate LUX */ lux = ((c0 - c1) * ratio_lut[r]) / 256;