diff options
| author | Fabio Aiuto <fabioaiuto83@gmail.com> | 2021-11-13 17:29:59 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2021-12-01 11:04:39 +0300 |
| commit | a6cc2445103ef6c406e735cb545b44e3edeb18bb (patch) | |
| tree | b9ddfb0913c5d6180dc5cfd8366ee23fa15334ba /drivers/usb | |
| parent | a5e1211d44519e0c25d64b7cabefdf59c19029be (diff) | |
| download | linux-a6cc2445103ef6c406e735cb545b44e3edeb18bb.tar.xz | |
usb: dwc3: leave default DMA for PCI devices
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>
Diffstat (limited to 'drivers/usb')
| -rw-r--r-- | drivers/usb/dwc3/core.c | 8 |
1 files changed, 5 insertions, 3 deletions
diff --git a/drivers/usb/dwc3/core.c b/drivers/usb/dwc3/core.c index 0104a80b185e..357b7805896e 100644 --- a/drivers/usb/dwc3/core.c +++ b/drivers/usb/dwc3/core.c @@ -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)) |