diff options
Diffstat (limited to 'drivers/gpu/drm/i2c/tda998x_drv.c')
| -rw-r--r-- | drivers/gpu/drm/i2c/tda998x_drv.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/drivers/gpu/drm/i2c/tda998x_drv.c b/drivers/gpu/drm/i2c/tda998x_drv.c index 48af5cac1902..240c331405b9 100644 --- a/drivers/gpu/drm/i2c/tda998x_drv.c +++ b/drivers/gpu/drm/i2c/tda998x_drv.c @@ -568,11 +568,11 @@ static irqreturn_t tda998x_irq_thread(int irq, void *data) static uint8_t tda998x_cksum(uint8_t *buf, size_t bytes) { - uint8_t sum = 0; + int sum = 0; while (bytes--) - sum += *buf++; - return (255 - sum) + 1; + sum -= *buf++; + return sum; } #define HB(x) (x) |