From: John Keeping Date: Wed, 15 Jan 2025 11:01:38 +0000 (+0000) Subject: drm/ssd130x: ensure ssd132x pitch is correct X-Git-Tag: v6.15-rc1~120^2~20^2~152 X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=229adcffdb54b13332d2afd2dc5d203418d50908;p=thirdparty%2Fkernel%2Fstable.git drm/ssd130x: ensure ssd132x pitch is correct The bounding rectangle is adjusted to ensure it aligns to SSD132X_SEGMENT_WIDTH, which may adjust the pitch. Calculate the pitch after aligning the left and right edge. Fixes: fdd591e00a9c ("drm/ssd130x: Add support for the SSD132x OLED controller family") Signed-off-by: John Keeping Reviewed-by: Javier Martinez Canillas Link: https://patchwork.freedesktop.org/patch/msgid/20250115110139.1672488-3-jkeeping@inmusicbrands.com Signed-off-by: Javier Martinez Canillas --- diff --git a/drivers/gpu/drm/solomon/ssd130x.c b/drivers/gpu/drm/solomon/ssd130x.c index 4bb663f984ce3..dd2006d51c7a2 100644 --- a/drivers/gpu/drm/solomon/ssd130x.c +++ b/drivers/gpu/drm/solomon/ssd130x.c @@ -1037,7 +1037,7 @@ static int ssd132x_fb_blit_rect(struct drm_framebuffer *fb, struct drm_format_conv_state *fmtcnv_state) { struct ssd130x_device *ssd130x = drm_to_ssd130x(fb->dev); - unsigned int dst_pitch = drm_rect_width(rect); + unsigned int dst_pitch; struct iosys_map dst; int ret = 0; @@ -1046,6 +1046,8 @@ static int ssd132x_fb_blit_rect(struct drm_framebuffer *fb, rect->x2 = min_t(unsigned int, round_up(rect->x2, SSD132X_SEGMENT_WIDTH), ssd130x->width); + dst_pitch = drm_rect_width(rect); + ret = drm_gem_fb_begin_cpu_access(fb, DMA_FROM_DEVICE); if (ret) return ret;