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Protect against trying to free a non-existant peripheral.

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Submitted by: Coverity Prevent analysis tool
MFC After: 3 days
This commit is contained in:
Scott Long 2005-02-20 23:45:49 +00:00
parent a47331bb73
commit 661658a6fa
1 changed files with 4 additions and 0 deletions
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4
sys/cam/cam_periph.c
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@ -445,6 +445,10 @@ camperiphfree(struct cam_periph *periph)
if (strcmp((*p_drv)->driver_name, periph->periph_name) == 0) if (strcmp((*p_drv)->driver_name, periph->periph_name) == 0)
break; break;
} }
if (*p_drv == NULL) {
printf("camperiphfree: attempt to free non-existant periph\n");
return;
}
if (periph->periph_dtor != NULL) if (periph->periph_dtor != NULL)
periph->periph_dtor(periph); periph->periph_dtor(periph);