From 9638d89a75776abc614c29cdeece0cc874ea2a4c Mon Sep 17 00:00:00 2001 From: "Salyzyn, Mark" Date: Thu, 12 Jan 2006 08:31:57 -0500 Subject: [SCSI] I2O: move pci_request_regions() just behind pci_enable_device() The problem in dpt_i2o could be the pci config space accesses it triggers as it loads, dangerous to do if there is any I/O activity going on in the other driver (probable if a boot driver I guess). I approve this patch to dpt_i2o.c, and am applying it to the Adaptec branch of the driver. Thanks for the investigation Ryoji. --- In linux 2.6.15, data transfer does hang when both dpt_i2o and i2o_block drivers are loaded. It seems that location of pci_request_regions() are wrong. I moved it just behind pci_enable_device() like other drivers, and it becomes fine. Signed-off-by: Ryoji Kamei Signed-off-by: James Bottomley --- drivers/message/i2o/pci.c | 10 +++++----- 1 file changed, 5 insertions(+), 5 deletions(-) (limited to 'drivers/message') diff --git a/drivers/message/i2o/pci.c b/drivers/message/i2o/pci.c index c5b656cdea7..f23aeea43f6 100644 --- a/drivers/message/i2o/pci.c +++ b/drivers/message/i2o/pci.c @@ -88,11 +88,6 @@ static int __devinit i2o_pci_alloc(struct i2o_controller *c) struct device *dev = &pdev->dev; int i; - if (pci_request_regions(pdev, OSM_DESCRIPTION)) { - printk(KERN_ERR "%s: device already claimed\n", c->name); - return -ENODEV; - } - for (i = 0; i < 6; i++) { /* Skip I/O spaces */ if (!(pci_resource_flags(pdev, i) & IORESOURCE_IO)) { @@ -319,6 +314,11 @@ static int __devinit i2o_pci_probe(struct pci_dev *pdev, return rc; } + if (pci_request_regions(pdev, OSM_DESCRIPTION)) { + printk(KERN_ERR "i2o: device already claimed\n", c->name); + return -ENODEV; + } + if (pci_set_dma_mask(pdev, DMA_32BIT_MASK)) { printk(KERN_WARNING "i2o: no suitable DMA found for %s\n", pci_name(pdev)); -- cgit v1.2.3