Messages in this thread Patch in this message | | | Date | Mon, 22 Oct 2007 03:53:30 +0200 | From | Roel Kluin <> | Subject | Re: [PATCH] return hidden bug |
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Rik van Riel wrote: > On Mon, 22 Oct 2007 03:05:05 +0200 > Roel Kluin <12o3l@tiscali.nl> wrote: > >> return hidden bug >> >> Signed-off-by: Roel Kluin <12o3l@tiscali.nl> >> >> diff --git a/arch/alpha/kernel/pci_iommu.c >> b/arch/alpha/kernel/pci_iommu.c index e1c4707..6a69425 100644 >> --- a/arch/alpha/kernel/pci_iommu.c >> +++ b/arch/alpha/kernel/pci_iommu.c >> @@ -365,8 +365,8 @@ pci_unmap_single(struct pci_dev *pdev, dma_addr_t >> dma_addr, size_t size, printk(KERN_ERR "Bogus pci_unmap_single: >> dma_addr %lx " " base %lx size %x\n", dma_addr, arena->dma_base, >> arena->size); >> - return; >> BUG(); >> + return; >> } >> >> npages = calc_npages((dma_addr & ~PAGE_MASK) + size); > > BUG() will terminate the process that runs into it, so you can > just remove the return alltogether. If BUG() is hit, the return > will never be reached. > --- hidden bug returns Signed-off-by: Roel Kluin <12o3l@tiscali.nl> --- diff --git a/arch/alpha/kernel/pci_iommu.c b/arch/alpha/kernel/pci_iommu.c index e1c4707..ca55c33 100644 --- a/arch/alpha/kernel/pci_iommu.c +++ b/arch/alpha/kernel/pci_iommu.c @@ -365,7 +365,6 @@ pci_unmap_single(struct pci_dev *pdev, dma_addr_t dma_addr, size_t size, printk(KERN_ERR "Bogus pci_unmap_single: dma_addr %lx " " base %lx size %x\n", dma_addr, arena->dma_base, arena->size); - return; BUG(); }
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