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| author | Dongdong Liu <liudongdong3@huawei.com> | 2020-01-23 11:26:31 +0300 |
|---|---|---|
| committer | Bjorn Helgaas <bhelgaas@google.com> | 2020-01-24 01:40:03 +0300 |
| commit | d95f20c4f07020ebc605f3b46af4b6db9eb5fc99 (patch) | |
| tree | 44e82d11278e6fb72ffa8ff018984e39bf7d0519 /drivers/pci/pcie/aer.c | |
| parent | 8d077c3ce0109c406c265cafc334258caee47e6d (diff) | |
| download | linux-d95f20c4f07020ebc605f3b46af4b6db9eb5fc99.tar.xz | |
PCI/AER: Initialize aer_fifo
Previously we did not call INIT_KFIFO() for aer_fifo. This leads to
kfifo_put() sometimes returning 0 (queue full) when in fact it is not.
It is easy to reproduce the problem by using aer-inject:
$ aer-inject -s :82:00.0 multiple-corr-nonfatal
The content of the multiple-corr-nonfatal file is as below:
AER
COR RCVR
HL 0 1 2 3
AER
UNCOR POISON_TLP
HL 4 5 6 7
Fixes: 27c1ce8bbed7 ("PCI/AER: Use kfifo for tracking events instead of reimplementing it")
Link: https://lore.kernel.org/r/1579767991-103898-1-git-send-email-liudongdong3@huawei.com
Signed-off-by: Dongdong Liu <liudongdong3@huawei.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Diffstat (limited to 'drivers/pci/pcie/aer.c')
| -rw-r--r-- | drivers/pci/pcie/aer.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/pci/pcie/aer.c b/drivers/pci/pcie/aer.c index 1ca86f2e0166..4a818b07a1af 100644 --- a/drivers/pci/pcie/aer.c +++ b/drivers/pci/pcie/aer.c @@ -1445,6 +1445,7 @@ static int aer_probe(struct pcie_device *dev) return -ENOMEM; rpc->rpd = port; + INIT_KFIFO(rpc->aer_fifo); set_service_data(dev, rpc); status = devm_request_threaded_irq(device, dev->irq, aer_irq, aer_isr, |