rem: if ((devf = fopen(file, "r")) == NULL)
add: if ((devf = open(file, O_RDONLY)) == -1)
context: extern struct pciusb_entries pci_probe(int probe_type) {	FILE *f, *devf;	char buf[BUF_SIZE];	unsigned short *bufi = (unsigned short *) &buf;	unsigned short devbusfn;	unsigned int id;	struct pciusb_entries r;	char file[25];	r.nb = 0;	if (!(f = fopen(proc_pci_path ? proc_pci_path : proc_pci_path_default, "r"))) {	        if (proc_pci_path) {		    char *err_msg;		    asprintf(&err_msg, "unable to open \"%s\"\n"			     "You may have passed a wrong argument to the \"-p\" option.\n"			     "fopen() sets errno to", proc_pci_path);		    perror(err_msg);		    free(err_msg);		}		r.entries = NULL;		return r;	}	r.entries = malloc(sizeof(struct pciusb_entry) * MAX_DEVICES);	for (; fgets(buf, sizeof(buf) - 1, f) && r.nb < MAX_DEVICES; r.nb++) {		struct pciusb_entry *e = &r.entries[r.nb];		unsigned char class_prog = 0;		pciusb_initialize(e);		sscanf(buf, "%hx %x", &devbusfn, &id);		e->vendor = id >> 16;		e->device = id & 0xffff;		e->pci_bus = devbusfn >> 8;		e->pci_device = (devbusfn & 0xff) >> 3;		e->pci_function = (devbusfn & 0xff) & 0x07;		if (probe_type != 1)			continue;		snprintf(file, sizeof(file), "/proc/bus/pci/%02x/%02x.%d", e->pci_bus, e->pci_device, e->pci_function);		if ((devf = fopen(file, "r")) == NULL)			continue;		fread(&buf, 0x30, 1, devf); /* these files're 256 bytes but we only need first 48 bytes*/		e->class_ = bufi[0x5];		e->subvendor = bufi[0x16];		e->subdevice = bufi[0x17];						if ((e->subvendor == 0 && e->subdevice == 0) ||		    (e->subvendor == e->vendor && e->subdevice == e->device)) {			e->subvendor = 0xffff;			e->subdevice = 0xffff;		}		class_prog = buf[0x9];		if (e->class_ == PCI_CLASS_SERIAL_USB) /* taken from kudzu's pci.c */			e->module = strdup(class_prog == 0 ? "usb-uhci" : "usb-ohci");		fclose(devf);	}	fclose(f);	realloc(r.entries,  sizeof(struct pciusb_entry) * r.nb);	if (pciusb_find_modules(&r, "pcitable", probe_type))		return r;	/* ok, let's try again with subids */	if (probe_type == 0) 		return pci_probe(1);	/* should not happen */	exit(1);}