IRQ and resource[] may not have correct values until
after PCI hotplug setup occurs at pci_enable_device() time.
The semantic match that finds this problem is as follows:
// <smpl>
@@
identifier x;
identifier request ~= "pci_request.*|pci_resource.*";
@@
(
* x->irq
|
* x->resource
|
* request(x, ...)
)
...
*pci_enable_device(x)
// </smpl>
Signed-off-by: Kulikov Vasiliy <segooon@xxxxxxxxx>
---
drivers/net/wireless/rt2x00/rt2x00pci.c | 21 ++++++++++-----------
1 files changed, 10 insertions(+), 11 deletions(-)
diff --git a/drivers/net/wireless/rt2x00/rt2x00pci.c b/drivers/net/wireless/rt2x00/rt2x00pci.c
index 19b262e..63c2cc4 100644
--- a/drivers/net/wireless/rt2x00/rt2x00pci.c
+++ b/drivers/net/wireless/rt2x00/rt2x00pci.c
@@ -240,16 +240,16 @@ int rt2x00pci_probe(struct pci_dev *pci_dev, const struct pci_device_id *id)
struct rt2x00_dev *rt2x00dev;
int retval;
- retval = pci_request_regions(pci_dev, pci_name(pci_dev));
+ retval = pci_enable_device(pci_dev);
if (retval) {
- ERROR_PROBE("PCI request regions failed.\n");
+ ERROR_PROBE("Enable device failed.\n");
return retval;
}
- retval = pci_enable_device(pci_dev);
+ retval = pci_request_regions(pci_dev, pci_name(pci_dev));
if (retval) {
- ERROR_PROBE("Enable device failed.\n");
- goto exit_release_regions;
+ ERROR_PROBE("PCI request regions failed.\n");
+ goto exit_disable_device;
}
pci_set_master(pci_dev);
@@ -260,14 +260,14 @@ int rt2x00pci_probe(struct pci_dev *pci_dev, const struct pci_device_id *id)
if (dma_set_mask(&pci_dev->dev, DMA_BIT_MASK(32))) {
ERROR_PROBE("PCI DMA not supported.\n");
retval = -EIO;
- goto exit_disable_device;
+ goto exit_release_regions;
}
hw = ieee80211_alloc_hw(sizeof(struct rt2x00_dev), ops->hw);
if (!hw) {
ERROR_PROBE("Failed to allocate hardware.\n");
retval = -ENOMEM;
- goto exit_disable_device;
+ goto exit_release_regions;
}
pci_set_drvdata(pci_dev, hw);
@@ -300,13 +300,12 @@ exit_free_reg:
exit_free_device:
ieee80211_free_hw(hw);
-exit_disable_device:
- if (retval != -EBUSY)
- pci_disable_device(pci_dev);
-
exit_release_regions:
pci_release_regions(pci_dev);
+exit_disable_device:
+ pci_disable_device(pci_dev);
+
pci_set_drvdata(pci_dev, NULL);
return retval;
--
1.7.0.4
--
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