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43 lines
1.3 KiB
Diff
43 lines
1.3 KiB
Diff
From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= <zajec5@gmail.com>
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Subject: [PATCH] PCI: iproc: Ignore ARM core aborts when running on bcma bus
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MIME-Version: 1.0
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Content-Type: text/plain; charset=UTF-8
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Content-Transfer-Encoding: 8bit
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Northstar devices have host bridges that forward errors to the ARM core.
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These errors happen during PCI bus probing (device enumeration) and are
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expected. There is no reason for them to cause a die() so this patch
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adds a handler silencing them.
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Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
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---
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--- a/drivers/pci/host/pcie-iproc-bcma.c
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+++ b/drivers/pci/host/pcie-iproc-bcma.c
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@@ -40,6 +40,15 @@ static int iproc_pcie_bcma_map_irq(const
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return bcma_core_irq(bdev, 5);
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}
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+static int iproc_pcie_bcma_abort_handler(unsigned long addr, unsigned int fsr,
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+ struct pt_regs *regs)
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+{
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+ if (fsr == 0x1406)
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+ return 0;
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+
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+ return 1;
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+}
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+
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static int iproc_pcie_bcma_probe(struct bcma_device *bdev)
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{
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struct iproc_pcie *pcie;
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@@ -65,6 +74,9 @@ static int iproc_pcie_bcma_probe(struct
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pcie->map_irq = iproc_pcie_bcma_map_irq;
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+ hook_fault_code(16 + 6, iproc_pcie_bcma_abort_handler, SIGBUS, BUS_OBJERR,
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+ "imprecise external abort");
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+
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ret = iproc_pcie_setup(pcie, &res);
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if (ret)
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dev_err(pcie->dev, "PCIe controller setup failed\n");
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