From 3ab8a651934f7b18b6716765df3c32391549cf01 Mon Sep 17 00:00:00 2001 From: "Jiri Slaby (SUSE)" Date: Mon, 22 Jan 2024 12:03:36 +0100 Subject: [PATCH] tty: vt: remove checks for count in consw::con_clear() implementations 'count' in consw::con_clear() is guaranteed to be positive. csi_X() (the only caller) takes the minimum of the vc parameter (which is at least 1) and count of characters till the end of the line. The latter is computed as a subtraction of vc->vc_cols (count) and vc->state.x (offset). So for the worst case, full line, it is 1. Therefore, there is no point in checking zero or negative values (width is now unsigned anyway). Signed-off-by: "Jiri Slaby (SUSE)" Cc: Helge Deller Cc: "James E.J. Bottomley" Cc: linux-fbdev@vger.kernel.org Cc: dri-devel@lists.freedesktop.org Cc: linux-parisc@vger.kernel.org Tested-by: Helge Deller # parisc STI console Link: https://lore.kernel.org/r/20240122110401.7289-23-jirislaby@kernel.org Signed-off-by: Greg Kroah-Hartman --- drivers/video/console/mdacon.c | 3 --- drivers/video/console/sticon.c | 3 --- 2 files changed, 6 deletions(-) diff --git a/drivers/video/console/mdacon.c b/drivers/video/console/mdacon.c index 1ddbb6cd5b0c..2ff2c9394d40 100644 --- a/drivers/video/console/mdacon.c +++ b/drivers/video/console/mdacon.c @@ -448,9 +448,6 @@ static void mdacon_clear(struct vc_data *c, unsigned int y, unsigned int x, u16 *dest = mda_addr(x, y); u16 eattr = mda_convert_attr(c->vc_video_erase_char); - if (width <= 0) - return; - scr_memsetw(dest, eattr, width * 2); } diff --git a/drivers/video/console/sticon.c b/drivers/video/console/sticon.c index d99c2a659bfd..b1d972d9a31c 100644 --- a/drivers/video/console/sticon.c +++ b/drivers/video/console/sticon.c @@ -303,9 +303,6 @@ static void sticon_deinit(struct vc_data *c) static void sticon_clear(struct vc_data *conp, unsigned int sy, unsigned int sx, unsigned int width) { - if (!width) - return; - sti_clear(sticon_sti, sy, sx, 1, width, conp->vc_video_erase_char, font_data[conp->vc_num]); }