patchset against 2.6.23-rc2 and this set is an audit of
/drivers/char/a*
through drivers/char .
this corrects missing ioremap return checks and balancing on
iounmap calls..
Signed-off-by: Scott Thompson <postfail <at> hushmail.com>
----------------------------------------------------------
diff --git a/drivers/char/hpet.c b/drivers/char/hpet.c
index 77bf4aa..53d233e 100644
--- a/drivers/char/hpet.c
+++ b/drivers/char/hpet.c
@@ -936,6 +936,12 @@ static acpi_status hpet_resources(struct
acpi_resource *res, void *data)
hdp->hd_phys_address = addr.minimum;
hdp->hd_address = ioremap(addr.minimum, addr.address_length);
+ if (!hdp->hd_address) {
+ printk(KERN_DEBUG "%s: ioremap failed\n",
+ __FUNCTION__);
+ return -ENOMEM;
+ }
+
if (hpet_is_known(hdp)) {
printk(KERN_DEBUG "%s: 0x%lx is busy\n",
__FUNCTION__, hdp->hd_phys_address);
@@ -953,6 +959,12 @@ static acpi_status hpet_resources(struct
acpi_resource *res, void *data)
hdp->hd_address = ioremap(fixmem32->address,
HPET_RANGE_SIZE);
+ if (!hdp->hd_address) {
+ printk(KERN_DEBUG "%s: ioremap failed\n",
+ __FUNCTION__);
+ return -ENOMEM;
+ }
+
if (hpet_is_known(hdp)) {
printk(KERN_DEBUG "%s: 0x%lx is busy\n",
__FUNCTION__, hdp->hd_phys_address);
diff --git a/drivers/char/moxa.c b/drivers/char/moxa.c
index ed76f0a..094323d 100644
--- a/drivers/char/moxa.c
+++ b/drivers/char/moxa.c
@@ -447,6 +447,13 @@ static int __init moxa_init(void)
for (i = 0; i < numBoards; i++) {
moxa_boards[i].basemem = ioremap(moxa_boards[i].baseAddr,
0x4000);
+ if (!moxa_boards[i].basemem) {
+ for (;i > 0;i--)
+ if (moxa_boards[i].basemem)
+ iounmap(moxa_boards[i].basemem);
+
+ return -ENOMEM;
+ }
}
return retval;
diff --git a/drivers/char/sx.c b/drivers/char/sx.c
index 85a2328..30829ed 100644
--- a/drivers/char/sx.c
+++ b/drivers/char/sx.c
@@ -2627,6 +2627,12 @@ static void __devinit fix_sx_pci(struct
pci_dev *pdev, struct sx_board *board)
pci_read_config_dword(pdev, PCI_BASE_ADDRESS_0, &hwbase);
hwbase &= PCI_BASE_ADDRESS_MEM_MASK;
rebase = ioremap(hwbase, 0x80);
+ if (!rebase) {
+ printk(KERN_DEBUG
+ "sx:ioremap fail, unable to perform cntrl reg fix\n");
+ return;
+ }
+
t = readl(rebase + CNTRL_REG_OFFSET);
if (t != CNTRL_REG_GOODVALUE) {
printk(KERN_DEBUG "sx: performing cntrl reg fix: %08x -> "
diff --git a/drivers/char/vr41xx_giu.c b/drivers/char/vr41xx_giu.c
index e5ed091..2381162 100644
--- a/drivers/char/vr41xx_giu.c
+++ b/drivers/char/vr41xx_giu.c
@@ -639,8 +639,10 @@ static int __devinit giu_probe(struct
platform_device *dev)
}
irq = platform_get_irq(dev, 0);
- if (irq < 0 || irq >= NR_IRQS)
+ if (irq < 0 || irq >= NR_IRQS) {
+ iounmap(giu_base);
return -EBUSY;
+ }
return cascade_irq(irq, giu_get_irq);
}
-
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