PCI: designware-ep: dw_pcie_ep_set_msi() should only set MMC bits

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Previously, dw_pcie_ep_set_msi() wrote all bits in the Message Control
register, thus overwriting the PCI_MSI_FLAGS_64BIT bit.
By clearing the PCI_MSI_FLAGS_64BIT bit, we break MSI
on systems where the RC has set a 64 bit MSI address.
Fix dw_pcie_ep_set_msi() so that it only sets MMC bits.

Tested-by: Gustavo Pimentel <gustavo.pimentel@synopsys.com>
Signed-off-by: Niklas Cassel <niklas.cassel@axis.com>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Acked-by: Joao Pinto <jpinto@synopsys.com>

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Niklas Cassel 2017-12-20 00:29:23 +01:00 • committed by Lorenzo Pieralisi

parent 111111a72e

commit 099a95f359

2 changed files with 4 additions and 1 deletions

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4

drivers/pci/dwc/pcie-designware-ep.c

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1

drivers/pci/dwc/pcie-designware.h

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