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| author | Salyzyn, Mark <mark_salyzyn@adaptec.com> | 2006-01-12 08:31:57 -0500 |
|---|---|---|
| committer | James Bottomley <jejb@mulgrave.(none)> | 2006-01-14 10:54:54 -0600 |
| commit | 9638d89a75776abc614c29cdeece0cc874ea2a4c (patch) | |
| tree | 5d7ac840f1c79e7d0fd48f5df1ba7db7567499f5 /drivers | |
| parent | 560c26c8345509619c3575331b99b329b5de1054 (diff) | |
| download | kernel_samsung_aries-9638d89a75776abc614c29cdeece0cc874ea2a4c.zip kernel_samsung_aries-9638d89a75776abc614c29cdeece0cc874ea2a4c.tar.gz kernel_samsung_aries-9638d89a75776abc614c29cdeece0cc874ea2a4c.tar.bz2 | |
[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 <kamei@miraclelinux.com>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/message/i2o/pci.c | 10 | ||||
| -rw-r--r-- | drivers/scsi/dpt_i2o.c | 10 |
2 files changed, 11 insertions, 9 deletions
diff --git a/drivers/message/i2o/pci.c b/drivers/message/i2o/pci.c index c5b656c..f23aeea 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)); diff --git a/drivers/scsi/dpt_i2o.c b/drivers/scsi/dpt_i2o.c index cdeb30b..6e6b293 100644 --- a/drivers/scsi/dpt_i2o.c +++ b/drivers/scsi/dpt_i2o.c @@ -899,6 +899,12 @@ static int adpt_install_hba(struct scsi_host_template* sht, struct pci_dev* pDev if(pci_enable_device(pDev)) { return -EINVAL; } + + if (pci_request_regions(pDev, "dpt_i2o")) { + PERROR("dpti: adpt_config_hba: pci request region failed\n"); + return -EINVAL; + } + pci_set_master(pDev); if (pci_set_dma_mask(pDev, 0xffffffffffffffffULL) && pci_set_dma_mask(pDev, 0xffffffffULL)) @@ -924,10 +930,6 @@ static int adpt_install_hba(struct scsi_host_template* sht, struct pci_dev* pDev raptorFlag = TRUE; } - if (pci_request_regions(pDev, "dpt_i2o")) { - PERROR("dpti: adpt_config_hba: pci request region failed\n"); - return -EINVAL; - } base_addr_virt = ioremap(base_addr0_phys,hba_map0_area_size); if (!base_addr_virt) { pci_release_regions(pDev); |