d/freebsd-nq
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

Check against maxsegsz being zero in bus_dma_tag_create and return EINVAL

Browse Source 
if it is.

Reviewed by:	scott long
This commit is contained in:
Matt Jacob 2007-06-11 17:57:24 +00:00
parent 9b434ede5c
commit f2114f3bcd
2 changed files with 8 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
sys/amd64/amd64/busdma_machdep.c
View File

@ -220,6 +220,10 @@ bus_dma_tag_create(bus_dma_tag_t parent, bus_size_t alignment,
if (boundary != 0 && boundary < maxsegsz)
maxsegsz = boundary;
if (maxsegsz == 0) {
return (EINVAL);
}
/* Return a NULL tag on failure */
*dmat = NULL;

4
sys/i386/i386/busdma_machdep.c
View File

@ -225,6 +225,10 @@ bus_dma_tag_create(bus_dma_tag_t parent, bus_size_t alignment,
if (boundary != 0 && boundary < maxsegsz)
maxsegsz = boundary;
if (maxsegsz == 0) {
return (EINVAL);
}
/* Return a NULL tag on failure */
*dmat = NULL;