[media] ene-ir: Fix cleanup on probe failure

This makes the cleanup on probe failure more consistent with other
drivers. This is similar to what commit
f27b853ea24a9b70585f9251384d97929e6551c3 ("[media] rc: Fix invalid
free_region and/or free_irq on probe failure") did for some other
drivers.
In addition to making the cleanup more consistent, this also fixes a
case where (on a ene_hw_detect failure) free_region would be called on a
region that was not requested yet.
This last problem was probably introduced by the moving of code in
commit b31b021988fed9e3741a46918f14ba9b063811db ("[media] ene_ir: Fix
driver initialisation") and commit
9ef449c6b31bb6a8e6dedc24de475a3b8c79be20 ("[media] rc: Postpone ISR
registration").

Signed-off-by: Matthijs Kooijman <matthijs@stdin.nl>
Cc: Maxim Levitsky <maximlevitsky@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

1 files changed, 13 insertions, 16 deletions

diff --git a/drivers/media/rc/ene_ir.c b/drivers/media/rc/ene_ir.c
index dd3c510a6ae8..22231dd4f62b 100644
--- a/drivers/media/rc/ene_ir.c
+++ b/drivers/media/rc/ene_ir.c
@@ -1003,7 +1003,7 @@ static int ene_probe(struct pnp_dev *pnp_dev, const struct pnp_device_id *id)
         dev = kzalloc(sizeof(struct ene_device), GFP_KERNEL);
         rdev = rc_allocate_device();
         if (!dev || !rdev)
-                goto error1;
+                goto failure;
 
         /* validate resources */
         error = -ENODEV;
@@ -1014,10 +1014,10 @@ static int ene_probe(struct pnp_dev *pnp_dev, const struct pnp_device_id *id)
 
         if (!pnp_port_valid(pnp_dev, 0) ||
             pnp_port_len(pnp_dev, 0) < ENE_IO_SIZE)
-                goto error;
+                goto failure;
 
         if (!pnp_irq_valid(pnp_dev, 0))
-                goto error;
+                goto failure;
 
         spin_lock_init(&dev->hw_lock);
 
@@ -1033,7 +1033,7 @@ static int ene_probe(struct pnp_dev *pnp_dev, const struct pnp_device_id *id)
         /* detect hardware version and features */
         error = ene_hw_detect(dev);
         if (error)
-                goto error;
+                goto failure;
 
         if (!dev->hw_learning_and_tx_capable && txsim) {
                 dev->hw_learning_and_tx_capable = true;
@@ -1078,30 +1078,27 @@ static int ene_probe(struct pnp_dev *pnp_dev, const struct pnp_device_id *id)
         /* claim the resources */
         error = -EBUSY;
         if (!request_region(dev->hw_io, ENE_IO_SIZE, ENE_DRIVER_NAME)) {
-                dev->hw_io = -1;
-                dev->irq = -1;
-                goto error;
+                goto failure;
         }
 
         dev->irq = pnp_irq(pnp_dev, 0);
         if (request_irq(dev->irq, ene_isr,
                         IRQF_SHARED, ENE_DRIVER_NAME, (void *)dev)) {
-                dev->irq = -1;
-                goto error;
+                goto failure2;
         }
 
         error = rc_register_device(rdev);
         if (error < 0)
-                goto error;
+                goto failure3;
 
         pr_notice("driver has been successfully loaded\n");
         return 0;
-error:
-        if (dev && dev->irq >= 0)
-                free_irq(dev->irq, dev);
-        if (dev && dev->hw_io >= 0)
-                release_region(dev->hw_io, ENE_IO_SIZE);
-error1:
+
+failure3:
+        free_irq(dev->irq, dev);
+failure2:
+        release_region(dev->hw_io, ENE_IO_SIZE);
+failure:
         rc_free_device(rdev);
         kfree(dev);
         return error;