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path: root/drivers/hid/hid-logitech-dj.c
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Diffstat (limited to 'drivers/hid/hid-logitech-dj.c')
-rw-r--r--drivers/hid/hid-logitech-dj.c76
1 files changed, 32 insertions, 44 deletions
diff --git a/drivers/hid/hid-logitech-dj.c b/drivers/hid/hid-logitech-dj.c
index 2b56efcbdf61..5e8a7ed42344 100644
--- a/drivers/hid/hid-logitech-dj.c
+++ b/drivers/hid/hid-logitech-dj.c
@@ -26,6 +26,7 @@
#include <linux/hid.h>
#include <linux/module.h>
#include <linux/usb.h>
+#include <asm/unaligned.h>
#include "usbhid/usbhid.h"
#include "hid-ids.h"
#include "hid-logitech-dj.h"
@@ -155,6 +156,14 @@ static const char media_descriptor[] = {
/* Maximum size of all defined hid reports in bytes (including report id) */
#define MAX_REPORT_SIZE 8
+/* Make sure all descriptors are present here */
+#define MAX_RDESC_SIZE \
+ (sizeof(kbd_descriptor) + \
+ sizeof(mse_descriptor) + \
+ sizeof(consumer_descriptor) + \
+ sizeof(syscontrol_descriptor) + \
+ sizeof(media_descriptor))
+
/* Number of possible hid report types that can be created by this driver.
*
* Right now, RF report types have the same report types (or report id's)
@@ -265,8 +274,8 @@ static void logi_dj_recv_add_djhid_device(struct dj_receiver_dev *djrcv_dev,
goto dj_device_allocate_fail;
}
- dj_dev->reports_supported = le32_to_cpu(
- dj_report->report_params[DEVICE_PAIRED_RF_REPORT_TYPE]);
+ dj_dev->reports_supported = get_unaligned_le32(
+ dj_report->report_params + DEVICE_PAIRED_RF_REPORT_TYPE);
dj_dev->hdev = dj_hiddev;
dj_dev->dj_receiver_dev = djrcv_dev;
dj_dev->device_index = dj_report->device_index;
@@ -473,9 +482,17 @@ static int logi_dj_output_hidraw_report(struct hid_device *hid, u8 * buf,
return 0;
}
+static void rdcat(char **rdesc, unsigned int *rsize, const char *data, unsigned int size)
+{
+ memcpy(*rdesc + *rsize, data, size);
+ *rsize += size;
+}
+
static int logi_dj_ll_parse(struct hid_device *hid)
{
struct dj_device *djdev = hid->driver_data;
+ unsigned int rsize = 0;
+ char *rdesc;
int retval;
dbg_hid("%s\n", __func__);
@@ -483,70 +500,38 @@ static int logi_dj_ll_parse(struct hid_device *hid)
djdev->hdev->version = 0x0111;
djdev->hdev->country = 0x00;
+ rdesc = kmalloc(MAX_RDESC_SIZE, GFP_KERNEL);
+ if (!rdesc)
+ return -ENOMEM;
+
if (djdev->reports_supported & STD_KEYBOARD) {
dbg_hid("%s: sending a kbd descriptor, reports_supported: %x\n",
__func__, djdev->reports_supported);
- retval = hid_parse_report(hid,
- (u8 *) kbd_descriptor,
- sizeof(kbd_descriptor));
- if (retval) {
- dbg_hid("%s: sending a kbd descriptor, hid_parse failed"
- " error: %d\n", __func__, retval);
- return retval;
- }
+ rdcat(&rdesc, &rsize, kbd_descriptor, sizeof(kbd_descriptor));
}
if (djdev->reports_supported & STD_MOUSE) {
dbg_hid("%s: sending a mouse descriptor, reports_supported: "
"%x\n", __func__, djdev->reports_supported);
- retval = hid_parse_report(hid,
- (u8 *) mse_descriptor,
- sizeof(mse_descriptor));
- if (retval) {
- dbg_hid("%s: sending a mouse descriptor, hid_parse "
- "failed error: %d\n", __func__, retval);
- return retval;
- }
+ rdcat(&rdesc, &rsize, mse_descriptor, sizeof(mse_descriptor));
}
if (djdev->reports_supported & MULTIMEDIA) {
dbg_hid("%s: sending a multimedia report descriptor: %x\n",
__func__, djdev->reports_supported);
- retval = hid_parse_report(hid,
- (u8 *) consumer_descriptor,
- sizeof(consumer_descriptor));
- if (retval) {
- dbg_hid("%s: sending a consumer_descriptor, hid_parse "
- "failed error: %d\n", __func__, retval);
- return retval;
- }
+ rdcat(&rdesc, &rsize, consumer_descriptor, sizeof(consumer_descriptor));
}
if (djdev->reports_supported & POWER_KEYS) {
dbg_hid("%s: sending a power keys report descriptor: %x\n",
__func__, djdev->reports_supported);
- retval = hid_parse_report(hid,
- (u8 *) syscontrol_descriptor,
- sizeof(syscontrol_descriptor));
- if (retval) {
- dbg_hid("%s: sending a syscontrol_descriptor, "
- "hid_parse failed error: %d\n",
- __func__, retval);
- return retval;
- }
+ rdcat(&rdesc, &rsize, syscontrol_descriptor, sizeof(syscontrol_descriptor));
}
if (djdev->reports_supported & MEDIA_CENTER) {
dbg_hid("%s: sending a media center report descriptor: %x\n",
__func__, djdev->reports_supported);
- retval = hid_parse_report(hid,
- (u8 *) media_descriptor,
- sizeof(media_descriptor));
- if (retval) {
- dbg_hid("%s: sending a media_descriptor, hid_parse "
- "failed error: %d\n", __func__, retval);
- return retval;
- }
+ rdcat(&rdesc, &rsize, media_descriptor, sizeof(media_descriptor));
}
if (djdev->reports_supported & KBD_LEDS) {
@@ -554,7 +539,10 @@ static int logi_dj_ll_parse(struct hid_device *hid)
__func__, djdev->reports_supported);
}
- return 0;
+ retval = hid_parse_report(hid, rdesc, rsize);
+ kfree(rdesc);
+
+ return retval;
}
static int logi_dj_ll_input_event(struct input_dev *dev, unsigned int type,