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[PATCH] WAN: ioremap() failure checks in drivers

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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>
This commit is contained in:
Krzysztof Halasa 2006-06-22 22:29:28 +02:00 committed by Jeff Garzik
parent 4a31e348e3
commit 4446065a2c
4 changed files with 21 additions and 3 deletions
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6
drivers/net/wan/c101.c
View file

@ -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;

5
drivers/net/wan/n2.c
View file

@ -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);

1
drivers/net/wan/pci200syn.c
View file

@ -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 */

12
drivers/net/wan/wanxl.c
View file

@ -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);