iv/linux
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

usb: dwc3: leave default DMA for PCI devices

Browse Source 
commit 47ce45906ca9870cf5267261f155fb7c70307cf0 upstream.

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: 45d39448b4d0 ("usb: dwc3: support 64 bit DMA in platform driver")
Cc: stable <stable@vger.kernel.org>
Reported-by: Hans De Goede <hdegoede@redhat.com>
Tested-by: Fabio Aiuto <fabioaiuto83@gmail.com>
Tested-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Fabio Aiuto <fabioaiuto83@gmail.com>
Link: https://lore.kernel.org/r/20211113142959.27191-1-fabioaiuto83@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Fabio Aiuto 2021-11-13 15:29:59 +01:00 committed by Greg Kroah-Hartman
parent a5e1211d44
commit a6cc244510
1 changed files with 5 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

8
drivers/usb/dwc3/core.c
View File

@ -1565,9 +1565,11 @@ static int dwc3_probe(struct platform_device *pdev)
dwc3_get_properties(dwc);
ret = dma_set_mask_and_coherent(dwc->sysdev, DMA_BIT_MASK(64));
if (ret)
return ret;
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))