Hi.
The following patch makes drivers/net/tokenring/ibmtr.c
call iounmap before it returns on error paths, makes it
not use check_region(), makes it check the return
of request_region and init_trdev and adds a few comment
strings on #endifs.
It applies against 246ac5 and my writing this patch was
caused by the Stanford team reporting the init_trdev
problem a while back.
--- linux-246-ac5-clean/drivers/net/tokenring/ibmtr.c Mon Jul 16 20:40:03 2001
+++ linux-246-ac5/drivers/net/tokenring/ibmtr.c Thu Jul 19 23:04:49 2001
@@ -330,7 +330,6 @@
for (i = 0; ibmtr_portlist[i]; i++) {
int ioaddr = ibmtr_portlist[i];
- if (check_region(ioaddr, IBMTR_IO_EXTENT)) continue;
if (!ibmtr_probe1(dev, ioaddr)) return 0;
}
return -ENODEV;
@@ -355,6 +354,8 @@
#ifndef MODULE
#ifndef PCMCIA
dev = init_trdev(dev, 0);
+ if (!dev)
+ return -ENOMEM;
#endif
#endif
@@ -392,6 +393,7 @@
* what we is there to learn of ISA/MCA or not TR card
*/
#ifdef PCMCIA
+ iounmap(t_mmio);
ti = dev->priv; /*BMS moved up here */
t_mmio = ti->mmio; /*BMS to get virtual address */
irq = ti->irq; /*BMS to display the irq! */
@@ -424,7 +426,12 @@
if (cardpresent == TR_ISA && (readb(AIPFID + t_mmio) == 0x0e))
cardpresent = TR_ISAPNP;
if (cardpresent == NOTOK) { /* "channel_id" did not match, report */
- if (!(ibmtr_debug_trace & TRC_INIT)) return -ENODEV;
+ if (!(ibmtr_debug_trace & TRC_INIT)) {
+#ifndef PCMCIA
+ iounmap(t_mmio);
+#endif
+ return -ENODEV;
+ }
DPRINTK( "Channel ID string not found for PIOaddr: %4hx\n",
PIOaddr);
DPRINTK("Expected for ISA: ");
@@ -442,7 +449,10 @@
waste the memory, just use the existing structure */
#ifndef PCMCIA
ti = (struct tok_info *) kmalloc(sizeof(struct tok_info), GFP_KERNEL);
- if (ti == NULL) return -ENOMEM;
+ if (ti == NULL) {
+ iounmap(t_mmio);
+ return -ENOMEM;
+ }
memset(ti, 0, sizeof(struct tok_info));
ti->mmio = t_mmio;
dev->priv = ti; /* this seems like the logical use of the
@@ -459,7 +469,7 @@
ti->turbo=1;
t_irq=turbo_irq[i];
}
-#endif
+#endif /* !PCMCIA */
ti->readlog_pending = 0;
init_waitqueue_head(&ti->wait_for_reset);
@@ -496,6 +506,7 @@
while (!readb(ti->mmio + ACA_OFFSET + ACA_RW + RRR_EVEN)){
if (!time_after(jiffies, timeout)) continue;
DPRINTK( "Hardware timeout during initialization.\n");
+ iounmap(t_mmio);
kfree(ti);
return -ENODEV;
}
@@ -609,6 +620,7 @@
default:
DPRINTK("Unknown shared ram paging info %01X\n",
ti->shared_ram_paging);
+ iounmap(t_mmio);
kfree(ti);
return -ENODEV;
break;
@@ -638,6 +650,7 @@
DPRINTK("Shared RAM for this adapter (%05x) exceeds "
"driver limit (%05x), adapter not started.\n",
chk_base, ibmtr_mem_base + IBMTR_SHARED_RAM_SIZE);
+ iounmap(t_mmio);
kfree(ti);
return -ENODEV;
} else { /* seems cool, record what we have figured out */
@@ -652,16 +665,24 @@
if (request_irq(dev->irq = irq, &tok_interrupt, 0, "ibmtr", dev) != 0) {
DPRINTK("Could not grab irq %d. Halting Token Ring driver.\n",
irq);
+ iounmap(t_mmio);
kfree(ti);
return -ENODEV;
}
/*?? Now, allocate some of the PIO PORTs for this driver.. */
/* record PIOaddr range as busy */
- request_region(PIOaddr, IBMTR_IO_EXTENT, "ibmtr");
+ if (!request_region(PIOaddr, IBMTR_IO_EXTENT, "ibmtr")) {
+ DPRINTK("Could not grab PIO range. Halting driver.\n");
+ free_irq(dev->irq);
+ iounmap(t_mmio);
+ kfree(ti);
+ return -EBUSY;
+ }
+
if (!version_printed++) {
printk(version);
}
-#endif
+#endif /* !PCMCIA */
DPRINTK("%s %s found\n",
channel_def[cardpresent - 1], adapter_def(ti->adapter_type));
DPRINTK("using irq %d, PIOaddr %hx, %dK shared RAM.\n",
--
Regards,
Rasmus([EMAIL PROTECTED])
"I begin by taking. I shall find scholars later to demonstrate my
perfect right." - Frederick (II) the Great
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