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authorBenjamin Tissoires <benjamin.tissoires@redhat.com>2016-11-21 13:48:42 +0300
committerJiri Kosina <jkosina@suse.cz>2016-11-23 19:43:25 +0300
commit6dab07df555b652d8d989348b2ce04498d7f9a70 (patch)
treeb5328936be55aade3fbac0fc484313a522b6fd57 /drivers/hid
parentb7a87ad6775f3ed69e6573b91ed3c2f1338884ad (diff)
downloadlinux-6dab07df555b652d8d989348b2ce04498d7f9a70.tar.xz
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>
Diffstat (limited to 'drivers/hid')
-rw-r--r--drivers/hid/hid-rmi.c10
1 files changed, 8 insertions, 2 deletions
diff --git a/drivers/hid/hid-rmi.c b/drivers/hid/hid-rmi.c
index 9cd2ca34a6be..be89bcbf6a71 100644
--- a/drivers/hid/hid-rmi.c
+++ b/drivers/hid/hid-rmi.c
@@ -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);