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Date: Tue, 10 Aug 2021 19:30:38 +0200 From: Greg Kroah-Hartman <gregkh@...uxfoundation.org> To: linux-kernel@...r.kernel.org Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>, stable@...r.kernel.org, Andy Shevchenko <andriy.shevchenko@...ux.intel.com> Subject: [PATCH 5.4 65/85] serial: 8250_pci: Enumerate Elkhart Lake UARTs via dedicated driver From: Andy Shevchenko <andriy.shevchenko@...ux.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@...r.kernel.org> Signed-off-by: Andy Shevchenko <andriy.shevchenko@...ux.intel.com> Link: https://lore.kernel.org/r/20210713101739.36962-1-andriy.shevchenko@linux.intel.com Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.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 @@ -3763,6 +3763,12 @@ 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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