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authorJisheng Zhang <Jisheng.Zhang@synaptics.com>2021-03-25 15:26:04 +0800
committerLorenzo Pieralisi <lorenzo.pieralisi@arm.com>2021-04-29 17:05:58 +0100
commit294353d950ab3e47d7694d382e50c887206f541a (patch)
tree8f4a492a8fdf506b0820139d696e633bf3d34541 /drivers/pci
parent3d0b2a3a87ce5ae85de46c4241afd52ab8b566fe (diff)
PCI: dwc: Move dw_pcie_msi_init() to dw_pcie_setup_rc()
If the host which makes use of IP's integrated MSI Receiver losts power during suspend, we need to reinit the RC and MSI Receiver in resume. But after we move dw_pcie_msi_init() into the core, we have no API to do so. Usually the dwc users need to call dw_pcie_setup_rc() to reinit the RC, we can solve this problem by moving dw_pcie_msi_init() to dw_pcie_setup_rc(). Link: https://lore.kernel.org/r/20210325152604.6e79deba@xhacker.debian Signed-off-by: Jisheng Zhang <Jisheng.Zhang@synaptics.com> Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> Reviewed-by: Rob Herring <robh@kernel.org>
Diffstat (limited to 'drivers/pci')
-rw-r--r--drivers/pci/controller/dwc/pcie-designware-host.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/pci/controller/dwc/pcie-designware-host.c b/drivers/pci/controller/dwc/pcie-designware-host.c
index 7e55b2b66182..e6c274f4485c 100644
--- a/drivers/pci/controller/dwc/pcie-designware-host.c
+++ b/drivers/pci/controller/dwc/pcie-designware-host.c
@@ -400,7 +400,6 @@ int dw_pcie_host_init(struct pcie_port *pp)
}
dw_pcie_setup_rc(pp);
- dw_pcie_msi_init(pp);
if (!dw_pcie_link_up(pci) && pci->ops && pci->ops->start_link) {
ret = pci->ops->start_link(pci);
@@ -551,6 +550,8 @@ void dw_pcie_setup_rc(struct pcie_port *pp)
}
}
+ dw_pcie_msi_init(pp);
+
/* Setup RC BARs */
dw_pcie_writel_dbi(pci, PCI_BASE_ADDRESS_0, 0x00000004);
dw_pcie_writel_dbi(pci, PCI_BASE_ADDRESS_1, 0x00000000);