Commit 47ce4590 authored by Fabio Aiuto's avatar Fabio Aiuto Committed by Greg Kroah-Hartman
Browse files

usb: dwc3: leave default DMA for PCI devices 



in case of a PCI dwc3 controller, leave the default DMA
mask. Calling of a 64 bit DMA mask breaks the driver on
cherrytrail based tablets like Cyberbook T116.

Fixes: 45d39448 ("usb: dwc3: support 64 bit DMA in platform driver")
Cc: stable <stable@vger.kernel.org>
Reported-by: default avatarHans De Goede <hdegoede@redhat.com>
Tested-by: default avatarFabio Aiuto <fabioaiuto83@gmail.com>
Tested-by: default avatarHans de Goede <hdegoede@redhat.com>
Signed-off-by: default avatarFabio Aiuto <fabioaiuto83@gmail.com>
Link: https://lore.kernel.org/r/20211113142959.27191-1-fabioaiuto83@gmail.com


Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 310780e8

drivers/usb/dwc3/core.c

+5 −3
Original line number Diff line number Diff line
@@ -1594,9 +1594,11 @@ static int dwc3_probe(struct platform_device *pdev) 


	dwc3_get_properties(dwc);



	if (!dwc->sysdev_is_parent) {

		ret = dma_set_mask_and_coherent(dwc->sysdev, DMA_BIT_MASK(64));

		if (ret)

			return ret;

	}



	dwc->reset = devm_reset_control_array_get_optional_shared(dev);

	if (IS_ERR(dwc->reset))