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PCI: rcar: Fix position of MSI enable bit 

The MSI enable is bit 31, not bit 28.  Set the correct bit to initialize
MSI.

Per Phil, "this is odd as MSI works before and after your patch. Since bit
31 just represents the value of MSICAP0[16].MSIE, I think this may just be
used for endpoints.  However, you are correct that the bit used was wrong."

Signed-off-by: Nobuhiro Iwamatsu <nobuhiro.iwamatsu.yj@renesas.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Phil Edworthy <phil.edworthy@renesas.com>
Acked-by: Simon Horman <horms+renesas@verge.net.au>
This commit is contained in:
Nobuhiro Iwamatsu 2015-02-02 14:09:39 +09:00 committed by Bjorn Helgaas
parent c517d838eb
commit 1fc6aa96ea
1 changed files with 1 additions and 1 deletions
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2
drivers/pci/host/pcie-rcar.c
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@ -501,7 +501,7 @@ static int rcar_pcie_hw_init(struct rcar_pcie *pcie)
/* Enable MSI */
if (IS_ENABLED(CONFIG_PCI_MSI))
rcar_pci_write_reg(pcie, 0x101f0000, PCIEMSITXR);
rcar_pci_write_reg(pcie, 0x801f0000, PCIEMSITXR);
/* Finish initialization - establish a PCI Express link */
rcar_pci_write_reg(pcie, CFINIT, PCIETCTLR);