From 594985d6615cc214dbfaf18fb6325d89a3c82e84 Mon Sep 17 00:00:00 2001 From: Ian Abbott Date: Thu, 1 Nov 2012 16:28:29 +0000 Subject: [PATCH] staging: comedi: gsc_hpdi: don't store physical base addresses In `struct hpdi_private`, the `plx9080_phys_iobase` and `hpdi_phys_iobase` hold the physical memory addresses from the PCI BARs used by this driver. The physical addresses are only really needed when ioremapping the resources when the device is being attached by `hpdi_auto_attach()`. A non-zero value of the `hpdi_phys_iobase` is also used to indicate that a call to `comedi_pci_enable()` was successful so that `comedi_pci_disable()` should be called when the device is detached by `hpdi_detach()`. Remove the `plx9080_phys_iobase` and `hpdi_phys_iobase` members and use `dev->iobase` as a flag to indicate whether `comedi_pci_disable()` needs to be called by `hpdi_detach()`. Signed-off-by: Ian Abbott Signed-off-by: Greg Kroah-Hartman --- drivers/staging/comedi/drivers/gsc_hpdi.c | 22 +++++++--------------- 1 file changed, 7 insertions(+), 15 deletions(-) diff --git a/drivers/staging/comedi/drivers/gsc_hpdi.c b/drivers/staging/comedi/drivers/gsc_hpdi.c index 7c25e7fa8c49..816296b04e69 100644 --- a/drivers/staging/comedi/drivers/gsc_hpdi.c +++ b/drivers/staging/comedi/drivers/gsc_hpdi.c @@ -213,9 +213,6 @@ static inline struct hpdi_board *board(const struct comedi_device *dev) } struct hpdi_private { - /* base addresses (physical) */ - resource_size_t plx9080_phys_iobase; - resource_size_t hpdi_phys_iobase; /* base addresses (ioremapped) */ void __iomem *plx9080_iobase; void __iomem *hpdi_iobase; @@ -506,23 +503,18 @@ static int __devinit hpdi_auto_attach(struct comedi_device *dev, "failed enable PCI device and request regions\n"); return -EIO; } + dev->iobase = 1; /* the "detach" needs this */ pci_set_master(pcidev); /* Initialize dev->board_name */ dev->board_name = board(dev)->name; - devpriv->plx9080_phys_iobase = - pci_resource_start(pcidev, PLX9080_BADDRINDEX); - devpriv->hpdi_phys_iobase = - pci_resource_start(pcidev, HPDI_BADDRINDEX); - - /* remap, won't work with 2.0 kernels but who cares */ - devpriv->plx9080_iobase = ioremap(devpriv->plx9080_phys_iobase, - pci_resource_len(pcidev, - PLX9080_BADDRINDEX)); + devpriv->plx9080_iobase = + ioremap(pci_resource_start(pcidev, PLX9080_BADDRINDEX), + pci_resource_len(pcidev, PLX9080_BADDRINDEX)); devpriv->hpdi_iobase = - ioremap(devpriv->hpdi_phys_iobase, - pci_resource_len(pcidev, HPDI_BADDRINDEX)); + ioremap(pci_resource_start(pcidev, HPDI_BADDRINDEX), + pci_resource_len(pcidev, HPDI_BADDRINDEX)); if (!devpriv->plx9080_iobase || !devpriv->hpdi_iobase) { dev_warn(dev->class_dev, "failed to remap io memory\n"); return -ENOMEM; @@ -606,7 +598,7 @@ static void hpdi_detach(struct comedi_device *dev) NUM_DMA_DESCRIPTORS, devpriv->dma_desc, devpriv->dma_desc_phys_addr); - if (devpriv->hpdi_phys_iobase) + if (dev->iobase) comedi_pci_disable(pcidev); } } -- 2.20.1