xiaomi-sm8450/android_kernel_xiaomi_sm8450
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

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

Browse Source 
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: 1b91d97c66 ("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 17f3c64f70
commit 0f30fedced
1 changed files with 6 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

6
drivers/tty/serial/8250/8250_pci.c
View File

@@ -3804,6 +3804,12 @@ static const struct pci_device_id blacklist[] = {
{ PCI_VDEVICE(INTEL, 0x0f0c), }, { PCI_VDEVICE(INTEL, 0x0f0c), },
{ PCI_VDEVICE(INTEL, 0x228a), }, { PCI_VDEVICE(INTEL, 0x228a), },
{ PCI_VDEVICE(INTEL, 0x228c), }, { 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, 0x9ce3), },
{ PCI_VDEVICE(INTEL, 0x9ce4), }, { PCI_VDEVICE(INTEL, 0x9ce4), },