[PATCH v4 0/2] PCI: dwc: fix two MSI issues

Jisheng Zhang
2020-09-29T10:35:41Z

Fix two MSI issues. One to skip PCIE_MSI_INTR0* programming if MSI is
disabled, another to use an address in the driver data for MSI address,
to fix the MSI page leakage during suspend/resume.

Since v3:
- add Acked-by tag
- change patch2 commit msg to make it more clear
- map the MSI msg with dma_map_single_attrs() for some platforms
which either has seperate addrs for dma and phy or has mem access
limitation for the PCIe.

Since v2:
- add Acked-by tag
- use an address in the driver data for MSI address. Thank Ard and Rob
for pointing out this correct direction.
- Since the MSI page has gone, the leak issue doesn't exist anymore,
remove unnecessary patches.
- Remove dw_pcie_free_msi rename and the last patch. They could be
targeted to next. So will send out patches in a separate series.

Since v1:
- add proper error handling patches.
- solve the msi page leakage by moving dw_pcie_msi_init() from each
users to designware host

Jisheng Zhang (2):
PCI: dwc: Skip PCIE_MSI_INTR0* programming if MSI is disabled
PCI: dwc: Fix MSI page leakage in suspend/resume

drivers/pci/controller/dwc/pci-dra7xx.c | 16 ++++++++-
.../pci/controller/dwc/pcie-designware-host.c | 34 +++++++++----------
drivers/pci/controller/dwc/pcie-designware.h | 2 +-
3 files changed, 33 insertions(+), 19 deletions(-)

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2.28.0