From cc3750883c161b595be02bf235bd38747a68f0d7 Mon Sep 17 00:00:00 2001 From: H Hartley Sweeten Date: Wed, 10 Apr 2013 11:30:45 -0700 Subject: [PATCH] staging: comedi: mite: use pci_ioremap_bar() Use pci_ioremap_bar() to ioremap the PCI resources. That function just takes the pci device and a bar number. It also has some additional sanity checks to make sure the bar is actually a memory resource. This also makes sure that the entire PCI bar is ioremap'ed instead of assuming the size of a bar. For aesthetic reasons, don't set the private data phys_addr vars until after the ioremap is successful. Signed-off-by: H Hartley Sweeten Reviewed-by: Ian Abbott Signed-off-by: Greg Kroah-Hartman --- drivers/staging/comedi/drivers/mite.c | 21 +++++---------------- 1 file changed, 5 insertions(+), 16 deletions(-) diff --git a/drivers/staging/comedi/drivers/mite.c b/drivers/staging/comedi/drivers/mite.c index 9a456624ab4..363305f2034 100644 --- a/drivers/staging/comedi/drivers/mite.c +++ b/drivers/staging/comedi/drivers/mite.c @@ -58,10 +58,6 @@ #include "comedi_fc.h" #include "mite.h" -#define PCI_MITE_SIZE 4096 -#define PCI_DAQ_SIZE 4096 -#define PCI_DAQ_SIZE_660X 8192 - #define TOP_OF_PAGE(x) ((x)|(~(PAGE_MASK))) struct mite_struct *mite_alloc(struct pci_dev *pcidev) @@ -104,35 +100,28 @@ static unsigned mite_fifo_size(struct mite_struct *mite, unsigned channel) int mite_setup2(struct mite_struct *mite, unsigned use_iodwbsr_1) { unsigned long length; - resource_size_t addr; int i; u32 csigr_bits; unsigned unknown_dma_burst_bits; pci_set_master(mite->pcidev); - addr = pci_resource_start(mite->pcidev, 0); - mite->mite_phys_addr = addr; - mite->mite_io_addr = ioremap(addr, PCI_MITE_SIZE); + mite->mite_io_addr = pci_ioremap_bar(mite->pcidev, 0); if (!mite->mite_io_addr) { dev_err(&mite->pcidev->dev, "Failed to remap mite io memory address\n"); return -ENOMEM; } + mite->mite_phys_addr = pci_resource_start(mite->pcidev, 0); - addr = pci_resource_start(mite->pcidev, 1); - mite->daq_phys_addr = addr; - length = pci_resource_len(mite->pcidev, 1); - /* - * In case of a 660x board, DAQ size is 8k instead of 4k - * (see as shown by lspci output) - */ - mite->daq_io_addr = ioremap(mite->daq_phys_addr, length); + mite->daq_io_addr = pci_ioremap_bar(mite->pcidev, 1); if (!mite->daq_io_addr) { dev_err(&mite->pcidev->dev, "Failed to remap daq io memory address\n"); return -ENOMEM; } + mite->daq_phys_addr = pci_resource_start(mite->pcidev, 1); + length = pci_resource_len(mite->pcidev, 1); if (use_iodwbsr_1) { writel(0, mite->mite_io_addr + MITE_IODWBSR); -- 2.46.0