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In case vmapbuf() fails, release all of the held resources.

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Submitted by:	tegge
This commit is contained in:
Alan Cox 2003-09-10 18:23:43 +00:00
parent 8edbaf859d
commit 8373f36dbb
1 changed files with 3 additions and 5 deletions
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8
sys/cam/cam_periph.c
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@ -653,16 +653,14 @@ cam_periph_mapmem(union ccb *ccb, struct cam_periph_map_info *mapinfo)
* vmapbuf() after the useracc() check.
*/
if (vmapbuf(mapinfo->bp[i]) < 0) {
printf("cam_periph_mapmem: error, "
"address %p, length %lu isn't "
"user accessible any more\n",
(void *)*data_ptrs[i],
(u_long)lengths[i]);
for (j = 0; j < i; ++j) {
*data_ptrs[j] = mapinfo->bp[j]->b_saveaddr;
vunmapbuf(mapinfo->bp[j]);
mapinfo->bp[j]->b_flags &= ~B_PHYS;
relpbuf(mapinfo->bp[j], NULL);
}
mapinfo->bp[i]->b_flags &= ~B_PHYS;
relpbuf(mapinfo->bp[i], NULL);
PRELE(curproc);
return(EACCES);
}