This Linux kernel change "PCI: tegra: Change PRSNT_SENSE IRQ log to debug" is included in the Linux 5.3 release. This change is authored by Manikanta Maddireddy <mmaddireddy [at] nvidia.com> on Tue Jun 18 23:31:58 2019 +0530. The commit for this change in Linux stable tree is c894121 (patch).
PCI: tegra: Change PRSNT_SENSE IRQ log to debug PRSNT_MAP bit field is programmed to update the slot present status. PRSNT_SENSE IRQ is triggered when this bit field is programmed, which is not an error. Add a new if condition to trap PRSNT_SENSE code and print it with debug log level. Signed-off-by: Manikanta Maddireddy <email@example.com> Signed-off-by: Lorenzo Pieralisi <firstname.lastname@example.org> Acked-by: Thierry Reding <email@example.com>
There are 2 lines of Linux source code added/deleted in this change. Code changes to Linux kernel are as follows.
drivers/pci/controller/pci-tegra.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/pci/controller/pci-tegra.c b/drivers/pci/controller/pci-tegra.c index 69cf0a0..adc50da 100644 --- a/drivers/pci/controller/pci-tegra.c +++ b/drivers/pci/controller/pci-tegra.c @@ -864,7 +864,7 @@ static irqreturn_t tegra_pcie_isr(int irq, void *arg) * do not pollute kernel log with master abort reports since they * happen a lot during enumeration */ - if (code == AFI_INTR_MASTER_ABORT) + if (code == AFI_INTR_MASTER_ABORT || code == AFI_INTR_PE_PRSNT_SENSE) dev_dbg(dev, "%s, signature: %08x\n", err_msg[code], signature); else dev_err(dev, "%s, signature: %08x\n", err_msg[code], signature);