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serial: 8250_pci: Enumerate Elkhart Lake UARTs via dedicated driver 

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: 4f912b898d ("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>
This commit is contained in:
Andy Shevchenko 2021-07-13 13:17:39 +03:00 committed by Greg Kroah-Hartman
parent 607460d386
commit f73dcb5d63
1 changed files with 6 additions and 0 deletions
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6
drivers/tty/serial/8250/8250_pci.c
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@ -3763,6 +3763,12 @@ static const struct pci_device_id blacklist[] = {
{ 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), },