From e98991130df36bc429f341a2f21519c39c52afe3 Mon Sep 17 00:00:00 2001 From: FUJITA Tomonori Date: Thu, 23 Oct 2008 17:36:08 +0900 Subject: [SCSI] aacraid: check pci_alloc_consistent errors We need to check the address that pci_alloc_consistent() returns since it might fail. When pci_alloc_consistent() fails, some IOMMUs set the dma_handle argument to zero. So we can't use fibptr->hw_fib_pa directly here. Signed-off-by: FUJITA Tomonori Cc: Aacraid List Signed-off-by: James Bottomley --- drivers/scsi/aacraid/commctrl.c | 12 +++++++++++- 1 file changed, 11 insertions(+), 1 deletion(-) diff --git a/drivers/scsi/aacraid/commctrl.c b/drivers/scsi/aacraid/commctrl.c index a7355260cfc..a5ebf8f49fa 100644 --- a/drivers/scsi/aacraid/commctrl.c +++ b/drivers/scsi/aacraid/commctrl.c @@ -90,14 +90,24 @@ static int ioctl_send_fib(struct aac_dev * dev, void __user *arg) if (size < le16_to_cpu(kfib->header.SenderSize)) size = le16_to_cpu(kfib->header.SenderSize); if (size > dev->max_fib_size) { + dma_addr_t daddr; + if (size > 2048) { retval = -EINVAL; goto cleanup; } + + kfib = pci_alloc_consistent(dev->pdev, size, &daddr); + if (!kfib) { + retval = -ENOMEM; + goto cleanup; + } + /* Highjack the hw_fib */ hw_fib = fibptr->hw_fib_va; hw_fib_pa = fibptr->hw_fib_pa; - fibptr->hw_fib_va = kfib = pci_alloc_consistent(dev->pdev, size, &fibptr->hw_fib_pa); + fibptr->hw_fib_va = kfib; + fibptr->hw_fib_pa = daddr; memset(((char *)kfib) + dev->max_fib_size, 0, size - dev->max_fib_size); memcpy(kfib, hw_fib, dev->max_fib_size); } -- cgit v1.2.3