diff options
author | Daniel Vetter <daniel.vetter@ffwll.ch> | 2022-04-05 23:03:32 +0200 |
---|---|---|
committer | Daniel Vetter <daniel.vetter@ffwll.ch> | 2022-04-07 16:52:13 +0200 |
commit | 6e7da3af008b72520f5318507f455f344b27f022 (patch) | |
tree | 405080b1882dcacc9db8edf05c9798db7d4c5de3 /drivers/video/fbdev/core/fbmem.c | |
parent | 43553559121ca90965b572cf8a1d6d0fd618b449 (diff) | |
download | linux-6e7da3af008b72520f5318507f455f344b27f022.tar.bz2 |
fbcon: Move console_lock for register/unlink/unregister
Ideally console_lock becomes an implementation detail of fbcon.c and
doesn't show up anywhere in fbmem.c. We're still pretty far from that,
but at least the register/unregister code is there now.
With this the do_fb_ioctl() handler is the only code in fbmem.c still
calling console_lock().
Acked-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
Cc: Daniel Vetter <daniel@ffwll.ch>
Cc: Thomas Zimmermann <tzimmermann@suse.de>
Cc: Du Cheng <ducheng2@gmail.com>
Cc: Claudio Suarez <cssk@net-c.es>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
Cc: Matthew Wilcox <willy@infradead.org>
Cc: Sam Ravnborg <sam@ravnborg.org>
Cc: Zheyu Ma <zheyuma97@gmail.com>
Cc: Guenter Roeck <linux@roeck-us.net>
Cc: Alex Deucher <alexander.deucher@amd.com>
Cc: Zhen Lei <thunder.leizhen@huawei.com>
Cc: Xiyu Yang <xiyuyang19@fudan.edu.cn>
Link: https://patchwork.freedesktop.org/patch/msgid/20220405210335.3434130-15-daniel.vetter@ffwll.ch
Diffstat (limited to 'drivers/video/fbdev/core/fbmem.c')
-rw-r--r-- | drivers/video/fbdev/core/fbmem.c | 23 |
1 files changed, 2 insertions, 21 deletions
diff --git a/drivers/video/fbdev/core/fbmem.c b/drivers/video/fbdev/core/fbmem.c index 0e68d9456bc2..bdd00d381bbc 100644 --- a/drivers/video/fbdev/core/fbmem.c +++ b/drivers/video/fbdev/core/fbmem.c @@ -1590,14 +1590,9 @@ static void do_remove_conflicting_framebuffers(struct apertures_struct *a, } } -static bool lockless_register_fb; -module_param_named_unsafe(lockless_register_fb, lockless_register_fb, bool, 0400); -MODULE_PARM_DESC(lockless_register_fb, - "Lockless framebuffer registration for debugging [default=off]"); - static int do_register_framebuffer(struct fb_info *fb_info) { - int i, ret; + int i; struct fb_videomode mode; if (fb_check_foreignness(fb_info)) @@ -1666,17 +1661,7 @@ static int do_register_framebuffer(struct fb_info *fb_info) } #endif - if (!lockless_register_fb) - console_lock(); - else - atomic_inc(&ignore_console_lock_warning); - ret = fbcon_fb_registered(fb_info); - - if (!lockless_register_fb) - console_unlock(); - else - atomic_dec(&ignore_console_lock_warning); - return ret; + return fbcon_fb_registered(fb_info); } static void unbind_console(struct fb_info *fb_info) @@ -1686,9 +1671,7 @@ static void unbind_console(struct fb_info *fb_info) if (WARN_ON(i < 0 || i >= FB_MAX || registered_fb[i] != fb_info)) return; - console_lock(); fbcon_fb_unbind(fb_info); - console_unlock(); } static void unlink_framebuffer(struct fb_info *fb_info) @@ -1731,9 +1714,7 @@ static void do_unregister_framebuffer(struct fb_info *fb_info) fb_notifier_call_chain(FB_EVENT_FB_UNREGISTERED, &event); } #endif - console_lock(); fbcon_fb_unregistered(fb_info); - console_unlock(); /* this may free fb info */ put_fb_info(fb_info); |