Commit 416e74ea authored by Julia Lawall's avatar Julia Lawall Committed by Linus Torvalds
Browse files

fbdev: use DIV_ROUND_UP or roundup 

The kernel.h macro DIV_ROUND_UP performs the computation (((n) + (d) - 1) /
(d)) but is perhaps more readable.

An extract of the semantic patch that makes this change is as follows:
(http://www.emn.fr/x-info/coccinelle/

)

// <smpl>
@haskernel@
@@

#include <linux/kernel.h>

@depends on haskernel@
expression n,d;
@@

(
- (n + d - 1) / d
+ DIV_ROUND_UP(n,d)
|
- (n + (d - 1)) / d
+ DIV_ROUND_UP(n,d)
)

@depends on haskernel@
expression n,d;
@@

- DIV_ROUND_UP((n),d)
+ DIV_ROUND_UP(n,d)

@depends on haskernel@
expression n,d;
@@

- DIV_ROUND_UP(n,(d))
+ DIV_ROUND_UP(n,d)
// </smpl>

Signed-off-by: default avatarJulia Lawall <julia@diku.dk>
Cc: "Antonino A. Daplas" <adaplas@pol.net>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent 7f29b87a

drivers/video/atafb.c

+1 −1
Original line number Diff line number Diff line
@@ -1270,7 +1270,7 @@ again: 


	gstart = (prescale / 2 + plen * left_margin) / prescale;

	/* gend1 is for hde (gend-gstart multiple of align), shifter's xres */

	gend1 = gstart + ((xres + align - 1) / align) * align * plen / prescale;

	gend1 = gstart + roundup(xres, align) * plen / prescale;

	/* gend2 is for hbb, visible xres (rest to gend1 is cut off by hblank) */

	gend2 = gstart + xres * plen / prescale;

	par->HHT = plen * (left_margin + xres + right_margin) /

drivers/video/cirrusfb.c

+1 −1
Original line number Diff line number Diff line
@@ -3117,7 +3117,7 @@ static void bestclock(long freq, long *best, long *nom, 
				}

			}

		}

		d = ((143181 * n) + f - 1) / f;

		d = DIV_ROUND_UP(143181 * n, f);

		if ((d >= 7) && (d <= 63)) {

			if (d > 31)

				d = (d / 2) * 2;

drivers/video/console/fbcon.c

+1 −2
Original line number Diff line number Diff line
@@ -620,8 +620,7 @@ static void fbcon_prepare_logo(struct vc_data *vc, struct fb_info *info, 
	if (fb_get_color_depth(&info->var, &info->fix) == 1)

		erase &= ~0x400;

	logo_height = fb_prepare_logo(info, ops->rotate);

	logo_lines = (logo_height + vc->vc_font.height - 1) /

		vc->vc_font.height;

	logo_lines = DIV_ROUND_UP(logo_height, vc->vc_font.height);

	q = (unsigned short *) (vc->vc_origin +

				vc->vc_size_row * rows);

	step = logo_lines * cols;

drivers/video/gxt4500.c

+1 −1
Original line number Diff line number Diff line
@@ -238,7 +238,7 @@ static int calc_pll(int period_ps, struct gxt4500_par *par) 
	for (pdiv1 = 1; pdiv1 <= 8; ++pdiv1) {

		for (pdiv2 = 1; pdiv2 <= pdiv1; ++pdiv2) {

			postdiv = pdiv1 * pdiv2;

			pll_period = (period_ps + postdiv - 1) / postdiv;

			pll_period = DIV_ROUND_UP(period_ps, postdiv);

			/* keep pll in range 350..600 MHz */

			if (pll_period < 1666 || pll_period > 2857)

				continue;

CRA Git | Maintained and supported by SUSTech CRA and CCSE