diff options
| author | Ingo Molnar <mingo@elte.hu> | 2009-08-11 14:19:09 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2009-08-11 14:19:09 +0200 |
| commit | 89034bc2c7b839702c00a704e79d112737f98be0 (patch) | |
| tree | e65b1f3d4c751baa840efc81bc4734f089379eb3 /drivers/i2c/chips/tsl2550.c | |
| parent | fb82ad719831db58e9baa4c67015aae3fe27e7e3 (diff) | |
| parent | 85dfd81dc57e8183a277ddd7a56aa65c96f3f487 (diff) | |
Merge branch 'linus' into tracing/core
Conflicts:
kernel/trace/trace_events_filter.c
We use the tracing/core version.
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'drivers/i2c/chips/tsl2550.c')
| -rw-r--r-- | drivers/i2c/chips/tsl2550.c | 17 |
1 files changed, 10 insertions, 7 deletions
diff --git a/drivers/i2c/chips/tsl2550.c b/drivers/i2c/chips/tsl2550.c index 1a9cc135219..b96f3025e58 100644 --- a/drivers/i2c/chips/tsl2550.c +++ b/drivers/i2c/chips/tsl2550.c @@ -27,7 +27,7 @@ #include <linux/delay.h> #define TSL2550_DRV_NAME "tsl2550" -#define DRIVER_VERSION "1.1.1" +#define DRIVER_VERSION "1.1.2" /* * Defines @@ -189,13 +189,16 @@ static int tsl2550_calculate_lux(u8 ch0, u8 ch1) u8 r = 128; /* Avoid division by 0 and count 1 cannot be greater than count 0 */ - if (c0 && (c1 <= c0)) - r = c1 * 128 / c0; + if (c1 <= c0) + if (c0) { + r = c1 * 128 / c0; + + /* Calculate LUX */ + lux = ((c0 - c1) * ratio_lut[r]) / 256; + } else + lux = 0; else - return -1; - - /* Calculate LUX */ - lux = ((c0 - c1) * ratio_lut[r]) / 256; + return -EAGAIN; /* LUX range check */ return lux > TSL2550_MAX_LUX ? TSL2550_MAX_LUX : lux; |