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Code Issues Releases Activity

vm_offset_t is unsigned and therefore can not be negative.

Browse Source 
Avoid unnessecary compares.

Found with:	Coverity Prevent(tm)
CID:		2362,4215,4214,4209,4208,2363,4211,4210,4213,4212

MFC after:	3 days
This commit is contained in:
Robert Noland 2009-03-20 18:30:20 +00:00
parent 1a604cfa07
commit 45d0290a5d
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=190169
5 changed files with 10 additions and 10 deletions
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2
sys/dev/agp/agp.c
View File

@ -532,7 +532,7 @@ agp_generic_bind_memory(device_t dev, struct agp_memory *mem,
int error;
/* Do some sanity checks first. */
if (offset < 0 || (offset & (AGP_PAGE_SIZE - 1)) != 0 ||
if ((offset & (AGP_PAGE_SIZE - 1)) != 0 ||
offset + mem->am_size > AGP_GET_APERTURE(dev)) {
device_printf(dev, "binding memory at bad offset %#x\n",
(int)offset);

4
sys/dev/agp/agp_amd64.c
View File

@ -337,7 +337,7 @@ agp_amd64_bind_page(device_t dev, vm_offset_t offset, vm_offset_t physical)
{
struct agp_amd64_softc *sc = device_get_softc(dev);
if (offset < 0 || offset >= (sc->gatt->ag_entries << AGP_PAGE_SHIFT))
if (offset >= (sc->gatt->ag_entries << AGP_PAGE_SHIFT))
return (EINVAL);
sc->gatt->ag_virtual[offset >> AGP_PAGE_SHIFT] =
@ -351,7 +351,7 @@ agp_amd64_unbind_page(device_t dev, vm_offset_t offset)
{
struct agp_amd64_softc *sc = device_get_softc(dev);
if (offset < 0 || offset >= (sc->gatt->ag_entries << AGP_PAGE_SHIFT))
if (offset >= (sc->gatt->ag_entries << AGP_PAGE_SHIFT))
return (EINVAL);
sc->gatt->ag_virtual[offset >> AGP_PAGE_SHIFT] = 0;

6
sys/dev/agp/agp_i810.c
View File

@ -840,7 +840,7 @@ agp_i810_bind_page(device_t dev, vm_offset_t offset, vm_offset_t physical)
{
struct agp_i810_softc *sc = device_get_softc(dev);
if (offset < 0 || offset >= (sc->gatt->ag_entries << AGP_PAGE_SHIFT)) {
if (offset >= (sc->gatt->ag_entries << AGP_PAGE_SHIFT)) {
device_printf(dev, "failed: offset is 0x%08jx, shift is %d, entries is %d\n", (intmax_t)offset, AGP_PAGE_SHIFT, sc->gatt->ag_entries);
return EINVAL;
}
@ -862,7 +862,7 @@ agp_i810_unbind_page(device_t dev, vm_offset_t offset)
{
struct agp_i810_softc *sc = device_get_softc(dev);
if (offset < 0 || offset >= (sc->gatt->ag_entries << AGP_PAGE_SHIFT))
if (offset >= (sc->gatt->ag_entries << AGP_PAGE_SHIFT))
return EINVAL;
if ( sc->chiptype != CHIP_I810 ) {
@ -1016,7 +1016,7 @@ agp_i810_bind_memory(device_t dev, struct agp_memory *mem,
vm_offset_t i;
/* Do some sanity checks first. */
if (offset < 0 || (offset & (AGP_PAGE_SIZE - 1)) != 0 ||
if ((offset & (AGP_PAGE_SIZE - 1)) != 0 ||
offset + mem->am_size > AGP_GET_APERTURE(dev)) {
device_printf(dev, "binding memory at bad offset %#x\n",
(int)offset);

4
sys/dev/agp/agp_intel.c
View File

@ -371,7 +371,7 @@ agp_intel_bind_page(device_t dev, vm_offset_t offset, vm_offset_t physical)
sc = device_get_softc(dev);
if (offset < 0 || offset >= (sc->gatt->ag_entries << AGP_PAGE_SHIFT))
if (offset >= (sc->gatt->ag_entries << AGP_PAGE_SHIFT))
return (EINVAL);
sc->gatt->ag_virtual[offset >> AGP_PAGE_SHIFT] = physical | 0x17;
@ -385,7 +385,7 @@ agp_intel_unbind_page(device_t dev, vm_offset_t offset)
sc = device_get_softc(dev);
if (offset < 0 || offset >= (sc->gatt->ag_entries << AGP_PAGE_SHIFT))
if (offset >= (sc->gatt->ag_entries << AGP_PAGE_SHIFT))
return (EINVAL);
sc->gatt->ag_virtual[offset >> AGP_PAGE_SHIFT] = 0;

4
sys/dev/agp/agp_via.c
View File

@ -362,7 +362,7 @@ agp_via_bind_page(device_t dev, vm_offset_t offset, vm_offset_t physical)
{
struct agp_via_softc *sc = device_get_softc(dev);
if (offset < 0 || offset >= (sc->gatt->ag_entries << AGP_PAGE_SHIFT))
if (offset >= (sc->gatt->ag_entries << AGP_PAGE_SHIFT))
return EINVAL;
sc->gatt->ag_virtual[offset >> AGP_PAGE_SHIFT] = physical;
@ -374,7 +374,7 @@ agp_via_unbind_page(device_t dev, vm_offset_t offset)
{
struct agp_via_softc *sc = device_get_softc(dev);
if (offset < 0 || offset >= (sc->gatt->ag_entries << AGP_PAGE_SHIFT))
if (offset >= (sc->gatt->ag_entries << AGP_PAGE_SHIFT))
return EINVAL;
sc->gatt->ag_virtual[offset >> AGP_PAGE_SHIFT] = 0;