HID: magicmouse: 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>
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061232f0d4
Коммит
b7a87ad677
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@ -493,7 +493,8 @@ static int magicmouse_input_configured(struct hid_device *hdev,
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static int magicmouse_probe(struct hid_device *hdev,
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const struct hid_device_id *id)
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{
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__u8 feature[] = { 0xd7, 0x01 };
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const u8 feature[] = { 0xd7, 0x01 };
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u8 *buf;
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struct magicmouse_sc *msc;
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struct hid_report *report;
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int ret;
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@ -544,6 +545,12 @@ static int magicmouse_probe(struct hid_device *hdev,
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}
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report->size = 6;
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buf = kmemdup(feature, sizeof(feature), GFP_KERNEL);
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if (!buf) {
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ret = -ENOMEM;
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goto err_stop_hw;
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}
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/*
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* Some devices repond with 'invalid report id' when feature
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* report switching it into multitouch mode is sent to it.
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@ -552,8 +559,9 @@ static int magicmouse_probe(struct hid_device *hdev,
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* but there seems to be no other way of switching the mode.
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* Thus the super-ugly hacky success check below.
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*/
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ret = hid_hw_raw_request(hdev, feature[0], feature, sizeof(feature),
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ret = hid_hw_raw_request(hdev, buf[0], buf, sizeof(feature),
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HID_FEATURE_REPORT, HID_REQ_SET_REPORT);
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kfree(buf);
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if (ret != -EIO && ret != sizeof(feature)) {
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hid_err(hdev, "unable to request touch data (%d)\n", ret);
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goto err_stop_hw;
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