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HID: rmi: make transfer buffers DMA capable 

Kernel v4.9 strictly enforces DMA capable buffers, so we need to remove
buffers allocated on the stack.

Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
This commit is contained in:
Benjamin Tissoires 2016-11-21 11:48:42 +01:00 committed by Jiri Kosina
parent b7a87ad677
commit 6dab07df55
1 changed files with 8 additions and 2 deletions
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10
drivers/hid/hid-rmi.c
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@ -188,10 +188,16 @@ static int rmi_set_page(struct hid_device *hdev, u8 page)
static int rmi_set_mode(struct hid_device *hdev, u8 mode)
{
int ret;
u8 txbuf[2] = {RMI_SET_RMI_MODE_REPORT_ID, mode};
const u8 txbuf[2] = {RMI_SET_RMI_MODE_REPORT_ID, mode};
u8 *buf;
ret = hid_hw_raw_request(hdev, RMI_SET_RMI_MODE_REPORT_ID, txbuf,
buf = kmemdup(txbuf, sizeof(txbuf), GFP_KERNEL);
if (!buf)
return -ENOMEM;
ret = hid_hw_raw_request(hdev, RMI_SET_RMI_MODE_REPORT_ID, buf,
sizeof(txbuf), HID_FEATURE_REPORT, HID_REQ_SET_REPORT);
kfree(buf);
if (ret < 0) {
dev_err(&hdev->dev, "unable to set rmi mode to %d (%d)\n", mode,
ret);