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authorKrzysztof Halasa <khc@pm.waw.pl>2006-06-22 22:29:28 +0200
committerJeff Garzik <jeff@garzik.org>2006-06-22 23:32:03 -0400
commit4446065a2c9b65398ceb115f4d8c256eb1bb9647 (patch)
treecdaa04d42876632e0df95054d46851cac6648ce3
parent4a31e348e3ecaf54c50240109ac4574b180f8840 (diff)
[PATCH] WAN: ioremap() failure checks in drivers
Eric Sesterhenn found that pci200syn initialization lacks return statement in ioremap() error path (coverity bug id #195). It looks like more WAN drivers have problems with ioremap(). Signed-off-by: Krzysztof Halasa <khc@pm.waw.pl> Signed-off-by: Jeff Garzik <jeff@garzik.org>
-rw-r--r--drivers/net/wan/c101.c6
-rw-r--r--drivers/net/wan/n2.c5
-rw-r--r--drivers/net/wan/pci200syn.c1
-rw-r--r--drivers/net/wan/wanxl.c12
4 files changed, 21 insertions, 3 deletions
diff --git a/drivers/net/wan/c101.c b/drivers/net/wan/c101.c
index 43d854ace23..b60ef02db7b 100644
--- a/drivers/net/wan/c101.c
+++ b/drivers/net/wan/c101.c
@@ -326,21 +326,21 @@ static int __init c101_run(unsigned long irq, unsigned long winbase)
if (request_irq(irq, sca_intr, 0, devname, card)) {
printk(KERN_ERR "c101: could not allocate IRQ\n");
c101_destroy_card(card);
- return(-EBUSY);
+ return -EBUSY;
}
card->irq = irq;
if (!request_mem_region(winbase, C101_MAPPED_RAM_SIZE, devname)) {
printk(KERN_ERR "c101: could not request RAM window\n");
c101_destroy_card(card);
- return(-EBUSY);
+ return -EBUSY;
}
card->phy_winbase = winbase;
card->win0base = ioremap(winbase, C101_MAPPED_RAM_SIZE);
if (!card->win0base) {
printk(KERN_ERR "c101: could not map I/O address\n");
c101_destroy_card(card);
- return -EBUSY;
+ return -EFAULT;
}
card->tx_ring_buffers = TX_RING_BUFFERS;
diff --git a/drivers/net/wan/n2.c b/drivers/net/wan/n2.c
index cd32751b64e..b7d88db89a5 100644
--- a/drivers/net/wan/n2.c
+++ b/drivers/net/wan/n2.c
@@ -387,6 +387,11 @@ static int __init n2_run(unsigned long io, unsigned long irq,
}
card->phy_winbase = winbase;
card->winbase = ioremap(winbase, USE_WINDOWSIZE);
+ if (!card->winbase) {
+ printk(KERN_ERR "n2: ioremap() failed\n");
+ n2_destroy_card(card);
+ return -EFAULT;
+ }
outb(0, io + N2_PCR);
outb(winbase >> 12, io + N2_BAR);
diff --git a/drivers/net/wan/pci200syn.c b/drivers/net/wan/pci200syn.c
index f485a97844c..670e8bd2245 100644
--- a/drivers/net/wan/pci200syn.c
+++ b/drivers/net/wan/pci200syn.c
@@ -354,6 +354,7 @@ static int __devinit pci200_pci_init_one(struct pci_dev *pdev,
card->rambase == NULL) {
printk(KERN_ERR "pci200syn: ioremap() failed\n");
pci200_pci_remove_one(pdev);
+ return -EFAULT;
}
/* Reset PLX */
diff --git a/drivers/net/wan/wanxl.c b/drivers/net/wan/wanxl.c
index 29a756dd979..437e0e938e3 100644
--- a/drivers/net/wan/wanxl.c
+++ b/drivers/net/wan/wanxl.c
@@ -634,7 +634,13 @@ static int __devinit wanxl_pci_init_one(struct pci_dev *pdev,
/* set up PLX mapping */
plx_phy = pci_resource_start(pdev, 0);
+
card->plx = ioremap_nocache(plx_phy, 0x70);
+ if (!card->plx) {
+ printk(KERN_ERR "wanxl: ioremap() failed\n");
+ wanxl_pci_remove_one(pdev);
+ return -EFAULT;
+ }
#if RESET_WHILE_LOADING
wanxl_reset(card);
@@ -700,6 +706,12 @@ static int __devinit wanxl_pci_init_one(struct pci_dev *pdev,
}
mem = ioremap_nocache(mem_phy, PDM_OFFSET + sizeof(firmware));
+ if (!mem) {
+ printk(KERN_ERR "wanxl: ioremap() failed\n");
+ wanxl_pci_remove_one(pdev);
+ return -EFAULT;
+ }
+
for (i = 0; i < sizeof(firmware); i += 4)
writel(htonl(*(u32*)(firmware + i)), mem + PDM_OFFSET + i);