V4L/DVB: IR/mceusb: remove bad ir_input_dev use

The ir_input_dev gets filled in by __ir_input_register, the one
allocated in mceusb_init_input_dev was being overwritten by the correct
one shortly after it was initialized (ultimately resulting in a memory
leak). This bug was inherited from imon.c, and was pointed out to me by
Maxim Levitsky.

v2: fix incorrect dev arg to dev_dbg

Signed-off-by: Jarod Wilson <jarod@redhat.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

1 files changed, 1 insertions, 14 deletions

diff --git a/drivers/media/IR/mceusb.c b/drivers/media/IR/mceusb.c
index 78bf7f77a1a0..65b073878169 100644
--- a/drivers/media/IR/mceusb.c
+++ b/drivers/media/IR/mceusb.c
@@ -228,7 +228,6 @@ static struct usb_device_id std_tx_mask_list[] = {
 /* data structure for each usb transceiver */
 struct mceusb_dev {
         /* ir-core bits */
-        struct ir_input_dev *irdev;
         struct ir_dev_props *props;
         struct ir_raw_event rawir;
 
@@ -739,7 +738,7 @@ static void mceusb_dev_recv(struct urb *urb, struct pt_regs *regs)
 
         if (ir->send_flags == RECV_FLAG_IN_PROGRESS) {
                 ir->send_flags = SEND_FLAG_COMPLETE;
-                dev_dbg(&ir->irdev->dev, "setup answer received %d bytes\n",
+                dev_dbg(ir->dev, "setup answer received %d bytes\n",
                         buf_len);
         }
 
@@ -861,7 +860,6 @@ static struct input_dev *mceusb_init_input_dev(struct mceusb_dev *ir)
 {
         struct input_dev *idev;
         struct ir_dev_props *props;
-        struct ir_input_dev *irdev;
         struct device *dev = ir->dev;
         int ret = -ENODEV;
 
@@ -878,12 +876,6 @@ static struct input_dev *mceusb_init_input_dev(struct mceusb_dev *ir)
                 goto props_alloc_failed;
         }
 
-        irdev = kzalloc(sizeof(struct ir_input_dev), GFP_KERNEL);
-        if (!irdev) {
-                dev_err(dev, "remote ir input dev allocation failed\n");
-                goto ir_dev_alloc_failed;
-        }
-
         snprintf(ir->name, sizeof(ir->name), "Media Center Ed. eHome "
                  "Infrared Remote Transceiver (%04x:%04x)",
                  le16_to_cpu(ir->usbdev->descriptor.idVendor),
@@ -902,9 +894,6 @@ static struct input_dev *mceusb_init_input_dev(struct mceusb_dev *ir)
         props->tx_ir = mceusb_tx_ir;
 
         ir->props = props;
-        ir->irdev = irdev;
-
-        input_set_drvdata(idev, irdev);
 
         ret = ir_input_register(idev, RC_MAP_RC6_MCE, props, DRIVER_NAME);
         if (ret < 0) {
@@ -915,8 +904,6 @@ static struct input_dev *mceusb_init_input_dev(struct mceusb_dev *ir)
         return idev;
 
 irdev_failed:
-        kfree(irdev);
-ir_dev_alloc_failed:
         kfree(props);
 props_alloc_failed:
         input_free_device(idev);