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pxa2x0_lcd_mmap():

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- Check offset parameter.
This commit is contained in:
nonaka 2007-06-28 14:37:36 +00:00
parent d2387d4569
commit d69f0db1d1
1 changed files with 9 additions and 5 deletions
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14
sys/arch/arm/xscale/pxa2x0_lcd.c
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@ -1,4 +1,4 @@
/* $NetBSD: pxa2x0_lcd.c,v 1.19 2007/06/26 15:38:38 nonaka Exp $ */
/* $NetBSD: pxa2x0_lcd.c,v 1.20 2007/06/28 14:37:36 nonaka Exp $ */
/*
* Copyright (c) 2002 Genetec Corporation. All rights reserved.
@ -38,7 +38,7 @@
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: pxa2x0_lcd.c,v 1.19 2007/06/26 15:38:38 nonaka Exp $");
__KERNEL_RCSID(0, "$NetBSD: pxa2x0_lcd.c,v 1.20 2007/06/28 14:37:36 nonaka Exp $");
#include <sys/param.h>
#include <sys/systm.h>
@ -870,12 +870,16 @@ paddr_t
pxa2x0_lcd_mmap(void *v, void *vs, off_t offset, int prot)
{
struct pxa2x0_lcd_softc *sc = v;
struct pxa2x0_lcd_screen *screen = sc->active; /* ??? */
struct pxa2x0_lcd_screen *scr = sc->active; /* ??? */
if (screen == NULL)
if (scr == NULL)
return -1;
return bus_dmamem_mmap(sc->dma_tag, screen->segs, screen->nsegs,
if (offset < 0 ||
offset >= scr->rinfo.ri_stride * scr->rinfo.ri_height)
return -1;
return bus_dmamem_mmap(sc->dma_tag, scr->segs, scr->nsegs,
offset, prot, BUS_DMA_WAITOK|BUS_DMA_COHERENT);
}