Commit 8d7fc299 authored by Daniel Vetter's avatar Daniel Vetter
Browse files

vt: Remove vc_panic_force_write 



It was only used by the panic support in fbcon, which is now gone.
Remove this now dead code too.

Acked-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Kees Cook <keescook@chromium.org>
Cc: Joe Perches <joe@perches.com>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: Meng Xu <mengxu.gatech@gmail.com>
Cc: Nicolas Pitre <nicolas.pitre@linaro.org>
Cc: Thomas Meyer <thomas@m3y3r.de>
Cc: Mike Frysinger <vapier@chromium.org>
Cc: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Cc: Hans de Goede <hdegoede@redhat.com>
Cc: Thierry Reding <treding@nvidia.com>
Cc: David Lechner <david@lechnology.com>
Cc: Philippe Ombredanne <pombredanne@nexb.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Kate Stewart <kstewart@linuxfoundation.org>
Signed-off-by: default avatarDaniel Vetter <daniel.vetter@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180822085405.10787-2-daniel.vetter@ffwll.ch
parent 04cfcc7a

drivers/tty/vt/vt.c

+4 −8
Original line number Diff line number Diff line
@@ -1004,9 +1004,7 @@ void redraw_screen(struct vc_data *vc, int is_switch) 
			clear_buffer_attributes(vc);

		}



		/* Forcibly update if we're panicing */

		if ((update && vc->vc_mode != KD_GRAPHICS) ||

		    vt_force_oops_output(vc))

		if (update && vc->vc_mode != KD_GRAPHICS)

			do_update_region(vc, vc->vc_origin, vc->vc_screenbuf_size / 2);

	}

	set_cursor(vc);
@@ -1046,7 +1044,6 @@ static void visual_init(struct vc_data *vc, int num, int init) 
	vc->vc_hi_font_mask = 0;

	vc->vc_complement_mask = 0;

	vc->vc_can_do_color = 0;

	vc->vc_panic_force_write = false;

	vc->vc_cur_blink_ms = DEFAULT_CURSOR_BLINK_MS;

	vc->vc_sw->con_init(vc, init);

	if (!vc->vc_complement_mask)
@@ -2911,7 +2908,7 @@ static void vt_console_print(struct console *co, const char *b, unsigned count) 
		goto quit;

	}



	if (vc->vc_mode != KD_TEXT && !vt_force_oops_output(vc))

	if (vc->vc_mode != KD_TEXT)

		goto quit;



	/* undraw cursor first */
@@ -4229,8 +4226,7 @@ void do_unblank_screen(int leaving_gfx) 
		return;

	}

	vc = vc_cons[fg_console].d;

	/* Try to unblank in oops case too */

	if (vc->vc_mode != KD_TEXT && !vt_force_oops_output(vc))

	if (vc->vc_mode != KD_TEXT)

		return; /* but leave console_blanked != 0 */



	if (blankinterval) {
@@ -4239,7 +4235,7 @@ void do_unblank_screen(int leaving_gfx) 
	}



	console_blanked = 0;

	if (vc->vc_sw->con_blank(vc, 0, leaving_gfx) || vt_force_oops_output(vc))

	if (vc->vc_sw->con_blank(vc, 0, leaving_gfx))

		/* Low-level driver cannot restore -> do it ourselves */

		update_screen(vc);

	if (console_blank_hook)

drivers/video/fbdev/core/fbcon.c

+1 −2
Original line number Diff line number Diff line
@@ -284,8 +284,7 @@ static inline int fbcon_is_inactive(struct vc_data *vc, struct fb_info *info) 
	struct fbcon_ops *ops = info->fbcon_par;



	return (info->state != FBINFO_STATE_RUNNING ||

		vc->vc_mode != KD_TEXT || ops->graphics) &&

		!vt_force_oops_output(vc);

		vc->vc_mode != KD_TEXT || ops->graphics);

}



static int get_color(struct vc_data *vc, struct fb_info *info,

include/linux/console_struct.h

+0 −1
Original line number Diff line number Diff line
@@ -141,7 +141,6 @@ struct vc_data { 
	struct uni_pagedir *vc_uni_pagedir;

	struct uni_pagedir **vc_uni_pagedir_loc; /* [!] Location of uni_pagedir variable for this console */

	struct uni_screen *vc_uni_screen;	/* unicode screen content */

	bool vc_panic_force_write; /* when oops/panic this VC can accept forced output/blanking */

	/* additional information is in vt_kern.h */

};

include/linux/vt_kern.h

+0 −7
Original line number Diff line number Diff line
@@ -135,13 +135,6 @@ extern int do_unbind_con_driver(const struct consw *csw, int first, int last, 
			     int deflt);

int vty_init(const struct file_operations *console_fops);



static inline bool vt_force_oops_output(struct vc_data *vc)

{

	if (oops_in_progress && vc->vc_panic_force_write  && panic_timeout >= 0)

		return true;

	return false;

}



extern char vt_dont_switch;

extern int default_utf8;

extern int global_cursor_default;

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