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authorMathias Nyman <mathias.nyman@linux.intel.com>2022-06-07 21:11:33 +0200
committerDmitry Torokhov <dmitry.torokhov@gmail.com>2022-06-07 22:44:39 +0200
commitc42e65664390be7c1ef3838cd84956d3a2739d60 (patch)
tree24a78121535584fc893c7b1b027387e39856e109 /drivers/input/mouse/bcm5974.c
parentInput: raspberrypi-ts - add missing HAS_IOMEM dependency (diff)
downloadlinux-c42e65664390be7c1ef3838cd84956d3a2739d60.tar.xz
linux-c42e65664390be7c1ef3838cd84956d3a2739d60.zip
Input: bcm5974 - set missing URB_NO_TRANSFER_DMA_MAP urb flag
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>
Diffstat (limited to 'drivers/input/mouse/bcm5974.c')
-rw-r--r--drivers/input/mouse/bcm5974.c7
1 files changed, 6 insertions, 1 deletions
diff --git a/drivers/input/mouse/bcm5974.c b/drivers/input/mouse/bcm5974.c
index 59a14505b9cd..ca150618d32f 100644
--- a/drivers/input/mouse/bcm5974.c
+++ b/drivers/input/mouse/bcm5974.c
@@ -942,17 +942,22 @@ 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));