From 4446065a2c9b65398ceb115f4d8c256eb1bb9647 Mon Sep 17 00:00:00 2001 From: Krzysztof Halasa Date: Thu, 22 Jun 2006 22:29:28 +0200 Subject: [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 Signed-off-by: Jeff Garzik --- drivers/net/wan/c101.c | 6 +++--- drivers/net/wan/n2.c | 5 +++++ drivers/net/wan/pci200syn.c | 1 + drivers/net/wan/wanxl.c | 12 ++++++++++++ 4 files changed, 21 insertions(+), 3 deletions(-) (limited to 'drivers') diff --git a/drivers/net/wan/c101.c b/drivers/net/wan/c101.c index 43d854ace233..b60ef02db7b0 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 cd32751b64eb..b7d88db89a5c 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 f485a97844cc..670e8bd2245c 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 29a756dd979b..437e0e938e38 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); -- cgit v1.2.2