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    Subject[PATCH 5.10 098/135] serial: 8250_pci: Enumerate Elkhart Lake UARTs via dedicated driver
    Date
    From: Andy Shevchenko <andriy.shevchenko@linux.intel.com>

    commit 7f0909db761535aefafa77031062603a71557267 upstream.

    Elkhart Lake UARTs are PCI enumerated Synopsys DesignWare v4.0+ UART
    integrated with Intel iDMA 32-bit DMA controller. There is a specific
    driver to handle them, i.e. 8250_lpss. Hence, disable 8250_pci
    enumeration for these UARTs.

    Fixes: 1b91d97c66ef ("serial: 8250_lpss: Add ->setup() for Elkhart Lake ports")
    Fixes: 4f912b898dc2 ("serial: 8250_lpss: Enable HS UART on Elkhart Lake")
    Cc: stable <stable@vger.kernel.org>
    Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
    Link: https://lore.kernel.org/r/20210713101739.36962-1-andriy.shevchenko@linux.intel.com
    Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
    ---
    drivers/tty/serial/8250/8250_pci.c | 6 ++++++
    1 file changed, 6 insertions(+)

    --- a/drivers/tty/serial/8250/8250_pci.c
    +++ b/drivers/tty/serial/8250/8250_pci.c
    @@ -3804,6 +3804,12 @@ static const struct pci_device_id blackl
    { PCI_VDEVICE(INTEL, 0x0f0c), },
    { PCI_VDEVICE(INTEL, 0x228a), },
    { PCI_VDEVICE(INTEL, 0x228c), },
    + { PCI_VDEVICE(INTEL, 0x4b96), },
    + { PCI_VDEVICE(INTEL, 0x4b97), },
    + { PCI_VDEVICE(INTEL, 0x4b98), },
    + { PCI_VDEVICE(INTEL, 0x4b99), },
    + { PCI_VDEVICE(INTEL, 0x4b9a), },
    + { PCI_VDEVICE(INTEL, 0x4b9b), },
    { PCI_VDEVICE(INTEL, 0x9ce3), },
    { PCI_VDEVICE(INTEL, 0x9ce4), },


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