From 2b721f20770ccbca4d3dad58e1bd44aa570efb3f Mon Sep 17 00:00:00 2001 From: Daniel Vetter Date: Wed, 10 Aug 2016 18:52:38 +0200 Subject: [PATCH] drm: Protect fb_defio in drivers with CONFIG_KMS_FBDEV_EMULATION For reasons that entirely elude me fb.h exposes all the structures, even when it is not enabled. Except for special stuff like fb_defio. Which means all the drivers which haven't yet switched over to the defio support in the helpers and still roll their own, will fail to compile when fbdev emulation is disabled. Protect just those bits, as a gnarly reminder that conversion to the core defio helpers would be good. Reviewed-by: Alex Deucher Signed-off-by: Daniel Vetter Link: http://patchwork.freedesktop.org/patch/msgid/1470847958-28465-6-git-send-email-daniel.vetter@ffwll.ch Signed-off-by: Dave Airlie --- drivers/gpu/drm/qxl/qxl_fb.c | 4 ++++ drivers/gpu/drm/udl/udl_fb.c | 4 ++++ 2 files changed, 8 insertions(+) diff --git a/drivers/gpu/drm/qxl/qxl_fb.c b/drivers/gpu/drm/qxl/qxl_fb.c index df2657051afd..28c1423049c5 100644 --- a/drivers/gpu/drm/qxl/qxl_fb.c +++ b/drivers/gpu/drm/qxl/qxl_fb.c @@ -73,10 +73,12 @@ static void qxl_fb_image_init(struct qxl_fb_image *qxl_fb_image, } } +#ifdef CONFIG_DRM_FBDEV_EMULATION static struct fb_deferred_io qxl_defio = { .delay = QXL_DIRTY_DELAY, .deferred_io = drm_fb_helper_deferred_io, }; +#endif static struct fb_ops qxlfb_ops = { .owner = THIS_MODULE, @@ -313,8 +315,10 @@ static int qxlfb_create(struct qxl_fbdev *qfbdev, goto out_destroy_fbi; } +#ifdef CONFIG_DRM_FBDEV_EMULATION info->fbdefio = &qxl_defio; fb_deferred_io_init(info); +#endif qdev->fbdev_info = info; qdev->fbdev_qfb = &qfbdev->qfb; diff --git a/drivers/gpu/drm/udl/udl_fb.c b/drivers/gpu/drm/udl/udl_fb.c index d5df555aeba0..9688bfa92ccd 100644 --- a/drivers/gpu/drm/udl/udl_fb.c +++ b/drivers/gpu/drm/udl/udl_fb.c @@ -203,6 +203,7 @@ static int udl_fb_open(struct fb_info *info, int user) ufbdev->fb_count++; +#ifdef CONFIG_DRM_FBDEV_EMULATION if (fb_defio && (info->fbdefio == NULL)) { /* enable defio at last moment if not disabled by client */ @@ -218,6 +219,7 @@ static int udl_fb_open(struct fb_info *info, int user) info->fbdefio = fbdefio; fb_deferred_io_init(info); } +#endif pr_notice("open /dev/fb%d user=%d fb_info=%p count=%d\n", info->node, user, info, ufbdev->fb_count); @@ -235,12 +237,14 @@ static int udl_fb_release(struct fb_info *info, int user) ufbdev->fb_count--; +#ifdef CONFIG_DRM_FBDEV_EMULATION if ((ufbdev->fb_count == 0) && (info->fbdefio)) { fb_deferred_io_cleanup(info); kfree(info->fbdefio); info->fbdefio = NULL; info->fbops->fb_mmap = udl_fb_mmap; } +#endif pr_warn("released /dev/fb%d user=%d count=%d\n", info->node, user, ufbdev->fb_count);