diff options
author | Daniel Vetter <daniel.vetter@ffwll.ch> | 2019-05-28 11:03:01 +0200 |
---|---|---|
committer | Daniel Vetter <daniel.vetter@ffwll.ch> | 2019-06-12 20:30:39 +0200 |
commit | fe2d70d6f6ff038c20705c34695bd34ac072af14 (patch) | |
tree | 262fd2946998ba34af89c59da7aeb64552af40b2 /drivers/video/fbdev/core/fbmem.c | |
parent | vgaswitcheroo: call fbcon_remap_all directly (diff) | |
download | linux-dev-fe2d70d6f6ff038c20705c34695bd34ac072af14.tar.xz linux-dev-fe2d70d6f6ff038c20705c34695bd34ac072af14.zip |
fbcon: Call con2fb_map functions directly
These are actually fbcon ioctls which just happen to be exposed
through /dev/fb*. They completely ignore which fb_info they're called
on, and I think the userspace tool even hardcodes to /dev/fb0.
Hence just forward the entire thing to fbcon.c wholesale.
Note that this patch drops the fb_lock/unlock on the set side. Since
the ioctl can operate on any fb (as passed in through
con2fb.framebuffer) this is bogus. Also note that fbcon.c in general
never calls fb_lock on anything, so this has been badly broken
already.
With this the last user of the fbcon notifier callback is gone, and we
can garbage collect that too.
v2: add missing uaccess.h include (alpha fails to compile otherwise),
reported by kbuild.
v3: Remember to also drop the #defines (Maarten)
v4: Add the static inline to dummy functions.
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
Reviewed-by: Sam Ravnborg <sam@ravnborg.org>
Reviewed-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Cc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Cc: Hans de Goede <hdegoede@redhat.com>
Cc: Yisheng Xie <ysxie@foxmail.com>
Cc: "Michał Mirosław" <mirq-linux@rere.qmqm.pl>
Cc: Peter Rosin <peda@axentia.se>
Cc: Mikulas Patocka <mpatocka@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190528090304.9388-31-daniel.vetter@ffwll.ch
Diffstat (limited to 'drivers/video/fbdev/core/fbmem.c')
-rw-r--r-- | drivers/video/fbdev/core/fbmem.c | 34 |
1 files changed, 2 insertions, 32 deletions
diff --git a/drivers/video/fbdev/core/fbmem.c b/drivers/video/fbdev/core/fbmem.c index dd1a708df1a7..64dd732021d8 100644 --- a/drivers/video/fbdev/core/fbmem.c +++ b/drivers/video/fbdev/core/fbmem.c @@ -1092,10 +1092,8 @@ static long do_fb_ioctl(struct fb_info *info, unsigned int cmd, struct fb_ops *fb; struct fb_var_screeninfo var; struct fb_fix_screeninfo fix; - struct fb_con2fbmap con2fb; struct fb_cmap cmap_from; struct fb_cmap_user cmap; - struct fb_event event; void __user *argp = (void __user *)arg; long ret = 0; @@ -1157,38 +1155,10 @@ static long do_fb_ioctl(struct fb_info *info, unsigned int cmd, ret = -EINVAL; break; case FBIOGET_CON2FBMAP: - if (copy_from_user(&con2fb, argp, sizeof(con2fb))) - return -EFAULT; - if (con2fb.console < 1 || con2fb.console > MAX_NR_CONSOLES) - return -EINVAL; - con2fb.framebuffer = -1; - event.data = &con2fb; - lock_fb_info(info); - event.info = info; - fb_notifier_call_chain(FB_EVENT_GET_CONSOLE_MAP, &event); - unlock_fb_info(info); - ret = copy_to_user(argp, &con2fb, sizeof(con2fb)) ? -EFAULT : 0; + ret = fbcon_get_con2fb_map_ioctl(argp); break; case FBIOPUT_CON2FBMAP: - if (copy_from_user(&con2fb, argp, sizeof(con2fb))) - return -EFAULT; - if (con2fb.console < 1 || con2fb.console > MAX_NR_CONSOLES) - return -EINVAL; - if (con2fb.framebuffer >= FB_MAX) - return -EINVAL; - if (!registered_fb[con2fb.framebuffer]) - request_module("fb%d", con2fb.framebuffer); - if (!registered_fb[con2fb.framebuffer]) { - ret = -EINVAL; - break; - } - event.data = &con2fb; - console_lock(); - lock_fb_info(info); - event.info = info; - ret = fb_notifier_call_chain(FB_EVENT_SET_CONSOLE_MAP, &event); - unlock_fb_info(info); - console_unlock(); + ret = fbcon_set_con2fb_map_ioctl(argp); break; case FBIOBLANK: console_lock(); |