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| author | Mathias Nyman <mathias.nyman@linux.intel.com> | 2022-06-07 12:11:33 -0700 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2022-06-14 16:52:41 +0200 |
| commit | 057b12ffd8318bbf706fce29dd0820dacd6e9120 (patch) | |
| tree | 5096cf02403feeb1ad55a18ddba63a0b704c51a4 | |
| parent | 593773088d615a46a42c97e01a0550d192bb7f74 (diff) | |
| download | linux-stable-057b12ffd8318bbf706fce29dd0820dacd6e9120.tar.gz linux-stable-057b12ffd8318bbf706fce29dd0820dacd6e9120.tar.bz2 linux-stable-057b12ffd8318bbf706fce29dd0820dacd6e9120.zip | |
Input: bcm5974 - set missing URB_NO_TRANSFER_DMA_MAP urb flag
commit c42e65664390be7c1ef3838cd84956d3a2739d60 upstream.
The bcm5974 driver does the allocation and dma mapping of the usb urb
data buffer, but driver does not set the URB_NO_TRANSFER_DMA_MAP flag
to let usb core know the buffer is already mapped.
usb core tries to map the already mapped buffer, causing a warning:
"xhci_hcd 0000:00:14.0: rejecting DMA map of vmalloc memory"
Fix this by setting the URB_NO_TRANSFER_DMA_MAP, letting usb core
know buffer is already mapped by bcm5974 driver
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Cc: stable@vger.kernel.org
Link: https://bugzilla.kernel.org/show_bug.cgi?id=215890
Link: https://lore.kernel.org/r/20220606113636.588955-1-mathias.nyman@linux.intel.com
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | drivers/input/mouse/bcm5974.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/drivers/input/mouse/bcm5974.c b/drivers/input/mouse/bcm5974.c index 30e3442518f8..0daf27ed4b16 100644 --- a/drivers/input/mouse/bcm5974.c +++ b/drivers/input/mouse/bcm5974.c @@ -956,17 +956,22 @@ static int bcm5974_probe(struct usb_interface *iface, if (!dev->tp_data) goto err_free_bt_buffer; - if (dev->bt_urb) + if (dev->bt_urb) { usb_fill_int_urb(dev->bt_urb, udev, usb_rcvintpipe(udev, cfg->bt_ep), dev->bt_data, dev->cfg.bt_datalen, bcm5974_irq_button, dev, 1); + dev->bt_urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP; + } + usb_fill_int_urb(dev->tp_urb, udev, usb_rcvintpipe(udev, cfg->tp_ep), dev->tp_data, dev->cfg.tp_datalen, bcm5974_irq_trackpad, dev, 1); + dev->tp_urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP; + /* create bcm5974 device */ usb_make_path(udev, dev->phys, sizeof(dev->phys)); strlcat(dev->phys, "/input0", sizeof(dev->phys)); |