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| author | Yong-Xuan Wang <yongxuan.wang@sifive.com> | 2023-08-07 08:56:21 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2023-09-23 12:14:27 +0300 |
| commit | a9d65399e316a647bea290f7f98ab3b101e259fc (patch) | |
| tree | 30d1c287b9c06d956aef19893c0d84863716b4e0 | |
| parent | 71abe57e65740cf568cc134dda176b64b05ead13 (diff) | |
| download | linux-a9d65399e316a647bea290f7f98ab3b101e259fc.tar.xz | |
PCI: fu740: Set the number of MSI vectors
[ Upstream commit 551a60e1225e71fff8efd9390204c505b0870e0f ]
The iMSI-RX module of the DW PCIe controller provides multiple sets of
MSI_CTRL_INT_i_* registers, and each set is capable of handling 32 MSI
interrupts. However, the fu740 PCIe controller driver only enabled one set
of MSI_CTRL_INT_i_* registers, as the total number of supported interrupts
was not specified.
Set the supported number of MSI vectors to enable all the MSI_CTRL_INT_i_*
registers on the fu740 PCIe core, allowing the system to fully utilize the
available MSI interrupts.
Link: https://lore.kernel.org/r/20230807055621.2431-1-yongxuan.wang@sifive.com
Signed-off-by: Yong-Xuan Wang <yongxuan.wang@sifive.com>
Signed-off-by: Lorenzo Pieralisi <lpieralisi@kernel.org>
Reviewed-by: Serge Semin <fancer.lancer@gmail.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
| -rw-r--r-- | drivers/pci/controller/dwc/pcie-fu740.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/pci/controller/dwc/pcie-fu740.c b/drivers/pci/controller/dwc/pcie-fu740.c index 0c90583c078b..1e9b44b8bba4 100644 --- a/drivers/pci/controller/dwc/pcie-fu740.c +++ b/drivers/pci/controller/dwc/pcie-fu740.c @@ -299,6 +299,7 @@ static int fu740_pcie_probe(struct platform_device *pdev) pci->dev = dev; pci->ops = &dw_pcie_ops; pci->pp.ops = &fu740_pcie_host_ops; + pci->pp.num_vectors = MAX_MSI_IRQS; /* SiFive specific region: mgmt */ afp->mgmt_base = devm_platform_ioremap_resource_byname(pdev, "mgmt"); |