diff options
| -rw-r--r-- | drivers/hid/hid-microsoft.c | 25 |
1 files changed, 20 insertions, 5 deletions
diff --git a/drivers/hid/hid-microsoft.c b/drivers/hid/hid-microsoft.c index 72d983626afd..1cbeeeabd2dd 100644 --- a/drivers/hid/hid-microsoft.c +++ b/drivers/hid/hid-microsoft.c @@ -30,10 +30,15 @@ #define MS_DUPLICATE_USAGES BIT(5) #define MS_SURFACE_DIAL BIT(6) +struct ms_data { + unsigned long quirks; +}; + static __u8 *ms_report_fixup(struct hid_device *hdev, __u8 *rdesc, unsigned int *rsize) { - unsigned long quirks = (unsigned long)hid_get_drvdata(hdev); + struct ms_data *ms = hid_get_drvdata(hdev); + unsigned long quirks = ms->quirks; /* * Microsoft Wireless Desktop Receiver (Model 1028) has @@ -159,7 +164,8 @@ static int ms_input_mapping(struct hid_device *hdev, struct hid_input *hi, struct hid_field *field, struct hid_usage *usage, unsigned long **bit, int *max) { - unsigned long quirks = (unsigned long)hid_get_drvdata(hdev); + struct ms_data *ms = hid_get_drvdata(hdev); + unsigned long quirks = ms->quirks; if (quirks & MS_ERGONOMY) { int ret = ms_ergonomy_kb_quirk(hi, usage, bit, max); @@ -185,7 +191,8 @@ static int ms_input_mapped(struct hid_device *hdev, struct hid_input *hi, struct hid_field *field, struct hid_usage *usage, unsigned long **bit, int *max) { - unsigned long quirks = (unsigned long)hid_get_drvdata(hdev); + struct ms_data *ms = hid_get_drvdata(hdev); + unsigned long quirks = ms->quirks; if (quirks & MS_DUPLICATE_USAGES) clear_bit(usage->code, *bit); @@ -196,7 +203,8 @@ static int ms_input_mapped(struct hid_device *hdev, struct hid_input *hi, static int ms_event(struct hid_device *hdev, struct hid_field *field, struct hid_usage *usage, __s32 value) { - unsigned long quirks = (unsigned long)hid_get_drvdata(hdev); + struct ms_data *ms = hid_get_drvdata(hdev); + unsigned long quirks = ms->quirks; struct input_dev *input; if (!(hdev->claimed & HID_CLAIMED_INPUT) || !field->hidinput || @@ -254,9 +262,16 @@ static int ms_event(struct hid_device *hdev, struct hid_field *field, static int ms_probe(struct hid_device *hdev, const struct hid_device_id *id) { unsigned long quirks = id->driver_data; + struct ms_data *ms; int ret; - hid_set_drvdata(hdev, (void *)quirks); + ms = devm_kzalloc(&hdev->dev, sizeof(*ms), GFP_KERNEL); + if (ms == NULL) + return -ENOMEM; + + ms->quirks = quirks; + + hid_set_drvdata(hdev, ms); if (quirks & MS_NOGET) hdev->quirks |= HID_QUIRK_NOGET; |
