>From b8bcaa200c97a6054efdb2c58acf5cf794c150d1 Mon Sep 17 00:00:00 2001 From: Adam Kandur <rndd@xxxxxxx> Date: Wed, 2 Jun 2021 12:12:48 +0300 Subject: [PATCH] modify fbtft/fb_agm1264k-fl.c --- drivers/staging/fbtft/fb_agm1264k-fl.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/staging/fbtft/fb_agm1264k-fl.c b/drivers/staging/fbtft/fb_agm1264k-fl.c index eeeeec97a..2e58c9d1a 100644 --- a/drivers/staging/fbtft/fb_agm1264k-fl.c +++ b/drivers/staging/fbtft/fb_agm1264k-fl.c @@ -273,10 +273,10 @@ static void iterate_diffusion_matrix(u32 xres, u32 yres, int x, continue; write_pos = &convert_buf[(y + j) * xres + x + i]; coeff = diffusing_matrix[i][j]; - if (-1 == coeff) { + if (-1 == coeff) /* pixel itself */ *write_pos = pixel; - } else { + else { signed short p = *write_pos + error * coeff; if (p > WHITE) -- 2.31.1