[PATCH AUTOSEL 5.14 07/32] PCI: tegra194: Fix MSI-X programming

From: Sasha Levin
Date: Sat Sep 11 2021 - 09:12:15 EST


From: Om Prakash Singh <omp@xxxxxxxxxx>

[ Upstream commit 43537cf7e351264a1f05ed42ad402942bfc9140e ]

Lower order MSI-X address is programmed in MSIX_ADDR_MATCH_HIGH_OFF
DBI register instead of higher order address. This patch fixes this
programming mistake.

Link: https://lore.kernel.org/r/20210623100525.19944-3-omp@xxxxxxxxxx
Signed-off-by: Om Prakash Singh <omp@xxxxxxxxxx>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@xxxxxxx>
Reviewed-by: Bjorn Helgaas <bhelgaas@xxxxxxxxxx>
Acked-by: Vidya Sagar <vidyas@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
drivers/pci/controller/dwc/pcie-tegra194.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/pci/controller/dwc/pcie-tegra194.c b/drivers/pci/controller/dwc/pcie-tegra194.c
index fd14e2f45bba..55c8afb9a899 100644
--- a/drivers/pci/controller/dwc/pcie-tegra194.c
+++ b/drivers/pci/controller/dwc/pcie-tegra194.c
@@ -1763,7 +1763,7 @@ static void pex_ep_event_pex_rst_deassert(struct tegra_pcie_dw *pcie)
val = (ep->msi_mem_phys & MSIX_ADDR_MATCH_LOW_OFF_MASK);
val |= MSIX_ADDR_MATCH_LOW_OFF_EN;
dw_pcie_writel_dbi(pci, MSIX_ADDR_MATCH_LOW_OFF, val);
- val = (lower_32_bits(ep->msi_mem_phys) & MSIX_ADDR_MATCH_HIGH_OFF_MASK);
+ val = (upper_32_bits(ep->msi_mem_phys) & MSIX_ADDR_MATCH_HIGH_OFF_MASK);
dw_pcie_writel_dbi(pci, MSIX_ADDR_MATCH_HIGH_OFF, val);

ret = dw_pcie_ep_init_complete(ep);
--
2.30.2