From patchwork Mon Jan 22 11:03:49 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Jiri Slaby \(SUSE\)" X-Patchwork-Id: 765052 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 3F5D646B88; Mon, 22 Jan 2024 11:05:19 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1705921519; cv=none; b=ESKDZK6HOteqUTgsr4utyD06Wepaokv0TM6oedVDd5uDpjMmxjaO6GTALvCkTBhaz3bFYLFgY4ekFIBgfDW0vmGLo+AmdTjpDs6gFctVugCXUGlPqwmt3SpaqOGOIV4lHgjJFYbxjmVXpaHONjUMh3Qq8yRS028bOIIYFgZ4xaI= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1705921519; c=relaxed/simple; bh=jj1hMXsXkxwRc3fMIyRBRr1lyLzgBskNQ+TSGxMFuJg=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=C1MdQqAd9OAfoFNzX8enlBjzyFjq7x1by5ODwsQ+y61T2iQCUlOtUxMypiof3GGua7s0NIG+0JpWB0OShfn+9gy1ZElkyIio5GtiUK+IgFOELas+kznnaPk5dj4aKdfLxlHx85lAngQKOMxKKZ5gYHayTaBGCIm+iWSoH3mHaI8= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=iRDz/Hgs; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="iRDz/Hgs" Received: by smtp.kernel.org (Postfix) with ESMTPSA id CFA67C433F1; Mon, 22 Jan 2024 11:05:16 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1705921519; bh=jj1hMXsXkxwRc3fMIyRBRr1lyLzgBskNQ+TSGxMFuJg=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=iRDz/HgsVPfI1ETWhxsfURPUYmKjNXadNhHYwVsgzD4TztkSsGEiawk2edo9XX7XD n7to30fU8OOAxfPHcF2oGzC+eab4LAZRGExBmPxpjCZK7Fdr39ZCCv6bzmQHsoY3u9 P0KfSet+B7c0DR8bT+cip5O5XKU9XhoDAo979lJJW3y/mts8ANB5zLP0zyvWW0jGLS ehoHVIpVk1DS9r7mNcVEZcIs9Ix77+Hhe3YOig2W1M5KeNEzD3jXOA46rPxOto3gIb fajvsfMvX+jfDzCoT4aWKauoG2xHUECjhxoox+Dad2jFYVKoIzi1TNNp6cKa7Oca8q wSieK9YOJu6sg== From: "Jiri Slaby (SUSE)" To: gregkh@linuxfoundation.org Cc: linux-serial@vger.kernel.org, linux-kernel@vger.kernel.org, "Jiri Slaby (SUSE)" , Helge Deller , "James E.J. Bottomley" , Daniel Vetter , linux-fbdev@vger.kernel.org, dri-devel@lists.freedesktop.org, linux-parisc@vger.kernel.org Subject: [PATCH v2 35/47] tty: vt: make types around consw::con_blank() bool Date: Mon, 22 Jan 2024 12:03:49 +0100 Message-ID: <20240122110401.7289-36-jirislaby@kernel.org> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20240122110401.7289-1-jirislaby@kernel.org> References: <20240122110401.7289-1-jirislaby@kernel.org> Precedence: bulk X-Mailing-List: linux-serial@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Both the mode_switch parameter and the return value (a redraw needed) are true/false. So switch them to bool, so that users won't return -Eerrors or anything else. And document the hook. Signed-off-by: Jiri Slaby (SUSE) Cc: Helge Deller Cc: "James E.J. Bottomley" Cc: Daniel Vetter Cc: linux-fbdev@vger.kernel.org Cc: dri-devel@lists.freedesktop.org Cc: linux-parisc@vger.kernel.org --- drivers/video/console/dummycon.c | 12 ++++++------ drivers/video/console/mdacon.c | 8 ++++---- drivers/video/console/newport_con.c | 7 ++++--- drivers/video/console/sticon.c | 9 +++++---- drivers/video/console/vgacon.c | 4 ++-- drivers/video/fbdev/core/fbcon.c | 6 +++--- include/linux/console.h | 7 +++++-- 7 files changed, 29 insertions(+), 24 deletions(-) diff --git a/drivers/video/console/dummycon.c b/drivers/video/console/dummycon.c index d86c1d798690..139049368fdc 100644 --- a/drivers/video/console/dummycon.c +++ b/drivers/video/console/dummycon.c @@ -79,21 +79,21 @@ static void dummycon_putcs(struct vc_data *vc, const u16 *s, unsigned int count, raw_notifier_call_chain(&dummycon_output_nh, 0, NULL); } -static int dummycon_blank(struct vc_data *vc, enum vesa_blank_mode blank, - int mode_switch) +static bool dummycon_blank(struct vc_data *vc, enum vesa_blank_mode blank, + bool mode_switch) { /* Redraw, so that we get putc(s) for output done while blanked */ - return 1; + return true; } #else static void dummycon_putc(struct vc_data *vc, u16 c, unsigned int y, unsigned int x) { } static void dummycon_putcs(struct vc_data *vc, const u16 *s, unsigned int count, unsigned int ypos, unsigned int xpos) { } -static int dummycon_blank(struct vc_data *vc, enum vesa_blank_mode blank, - int mode_switch) +static bool dummycon_blank(struct vc_data *vc, enum vesa_blank_mode blank, + bool mode_switch) { - return 0; + return false; } #endif diff --git a/drivers/video/console/mdacon.c b/drivers/video/console/mdacon.c index 63e3ce678aab..c0e1f4554a44 100644 --- a/drivers/video/console/mdacon.c +++ b/drivers/video/console/mdacon.c @@ -451,8 +451,8 @@ static bool mdacon_switch(struct vc_data *c) return true; /* redrawing needed */ } -static int mdacon_blank(struct vc_data *c, enum vesa_blank_mode blank, - int mode_switch) +static bool mdacon_blank(struct vc_data *c, enum vesa_blank_mode blank, + bool mode_switch) { if (mda_type == TYPE_MDA) { if (blank) @@ -460,14 +460,14 @@ static int mdacon_blank(struct vc_data *c, enum vesa_blank_mode blank, mda_convert_attr(c->vc_video_erase_char), c->vc_screenbuf_size); /* Tell console.c that it has to restore the screen itself */ - return 1; + return true; } else { if (blank) outb_p(0x00, mda_mode_port); /* disable video */ else outb_p(MDA_MODE_VIDEO_EN | MDA_MODE_BLINK_EN, mda_mode_port); - return 0; + return false; } } diff --git a/drivers/video/console/newport_con.c b/drivers/video/console/newport_con.c index 38437a53b7f1..dbb31bf87bf1 100644 --- a/drivers/video/console/newport_con.c +++ b/drivers/video/console/newport_con.c @@ -476,8 +476,8 @@ static bool newport_switch(struct vc_data *vc) return true; } -static int newport_blank(struct vc_data *c, enum vesa_blank_mode blank, - int mode_switch) +static bool newport_blank(struct vc_data *c, enum vesa_blank_mode blank, + bool mode_switch) { unsigned short treg; @@ -492,7 +492,8 @@ static int newport_blank(struct vc_data *c, enum vesa_blank_mode blank, newport_vc2_set(npregs, VC2_IREG_CONTROL, (treg & ~(VC2_CTRL_EDISP))); } - return 1; + + return true; } static int newport_set_font(int unit, struct console_font *op, unsigned int vpitch) diff --git a/drivers/video/console/sticon.c b/drivers/video/console/sticon.c index e9d5d1f92883..cbb9ef438214 100644 --- a/drivers/video/console/sticon.c +++ b/drivers/video/console/sticon.c @@ -298,19 +298,20 @@ static bool sticon_switch(struct vc_data *conp) return true; /* needs refreshing */ } -static int sticon_blank(struct vc_data *c, enum vesa_blank_mode blank, - int mode_switch) +static bool sticon_blank(struct vc_data *c, enum vesa_blank_mode blank, + bool mode_switch) { if (blank == VESA_NO_BLANKING) { if (mode_switch) vga_is_gfx = 0; - return 1; + return true; } sti_clear(sticon_sti, 0, 0, c->vc_rows, c->vc_cols, BLANK, font_data[c->vc_num]); if (mode_switch) vga_is_gfx = 1; - return 1; + + return true; } static u8 sticon_build_attr(struct vc_data *conp, u8 color, diff --git a/drivers/video/console/vgacon.c b/drivers/video/console/vgacon.c index 84f3682704c7..c9a22118102f 100644 --- a/drivers/video/console/vgacon.c +++ b/drivers/video/console/vgacon.c @@ -797,8 +797,8 @@ static void vga_pal_blank(struct vgastate *state) } } -static int vgacon_blank(struct vc_data *c, enum vesa_blank_mode blank, - int mode_switch) +static bool vgacon_blank(struct vc_data *c, enum vesa_blank_mode blank, + bool mode_switch) { switch (blank) { case VESA_NO_BLANKING: /* Unblank */ diff --git a/drivers/video/fbdev/core/fbcon.c b/drivers/video/fbdev/core/fbcon.c index 69be5f2106bc..eee2adf5c682 100644 --- a/drivers/video/fbdev/core/fbcon.c +++ b/drivers/video/fbdev/core/fbcon.c @@ -2198,8 +2198,8 @@ static void fbcon_generic_blank(struct vc_data *vc, struct fb_info *info, } } -static int fbcon_blank(struct vc_data *vc, enum vesa_blank_mode blank, - int mode_switch) +static bool fbcon_blank(struct vc_data *vc, enum vesa_blank_mode blank, + bool mode_switch) { struct fb_info *info = fbcon_info_from_console(vc->vc_num); struct fbcon_ops *ops = info->fbcon_par; @@ -2238,7 +2238,7 @@ static int fbcon_blank(struct vc_data *vc, enum vesa_blank_mode blank, else fbcon_add_cursor_work(info); - return 0; + return false; } static void fbcon_debug_enter(struct vc_data *vc) diff --git a/include/linux/console.h b/include/linux/console.h index 69040d7c8f97..6392bcd2fe7c 100644 --- a/include/linux/console.h +++ b/include/linux/console.h @@ -49,6 +49,9 @@ enum vc_intensity; * Invoked by csi_M and printing to the console. * @con_switch: notifier about the console switch; it is supposed to return * true if a redraw is needed. + * @con_blank: blank/unblank the console. The target mode is passed in @blank. + * @mode_switch is set if changing from/to text/graphics. The hook + * is supposed to return true if a redraw is needed. * @con_set_palette: sets the palette of the console to @table (optional) * @con_scrolldelta: the contents of the console should be scrolled by @lines. * Invoked by user. (optional) @@ -70,8 +73,8 @@ struct consw { unsigned int bottom, enum con_scroll dir, unsigned int lines); bool (*con_switch)(struct vc_data *vc); - int (*con_blank)(struct vc_data *vc, enum vesa_blank_mode blank, - int mode_switch); + bool (*con_blank)(struct vc_data *vc, enum vesa_blank_mode blank, + bool mode_switch); int (*con_font_set)(struct vc_data *vc, struct console_font *font, unsigned int vpitch, unsigned int flags); int (*con_font_get)(struct vc_data *vc, struct console_font *font,