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OpenCloudOS-Kernel
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[media] iguanair: fix return value for transmit 

Also fix error codes returned from open.

Signed-off-by: Sean Young <sean@mess.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
Sean Young 2012-08-13 08:59:42 -03:00 committed by Mauro Carvalho Chehab
parent 7c0bd96b76
commit 884bfd08e3
1 changed files with 18 additions and 12 deletions
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30
drivers/media/rc/iguanair.c
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@ -327,7 +327,7 @@ static int iguanair_tx(struct rc_dev *dev, unsigned *txbuf, unsigned count)
{
struct iguanair *ir = dev->priv;
uint8_t space, *payload;
unsigned i, size, rc;
unsigned i, size, rc, bytes;
struct send_packet *packet;
mutex_lock(&ir->lock);
@ -335,7 +335,17 @@ static int iguanair_tx(struct rc_dev *dev, unsigned *txbuf, unsigned count)
/* convert from us to carrier periods */
for (i = size = 0; i < count; i++) {
txbuf[i] = DIV_ROUND_CLOSEST(txbuf[i] * ir->carrier, 1000000);
size += (txbuf[i] + 126) / 127;
bytes = (txbuf[i] + 126) / 127;
if (size + bytes > ir->bufsize) {
count = i;
break;
}
size += bytes;
}
if (count == 0) {
rc = -EINVAL;
goto out;
}
packet = kmalloc(sizeof(*packet) + size, GFP_KERNEL);
@ -344,11 +354,6 @@ static int iguanair_tx(struct rc_dev *dev, unsigned *txbuf, unsigned count)
goto out;
}
if (size > ir->bufsize) {
rc = -E2BIG;
goto out;
}
packet->header.start = 0;
packet->header.direction = DIR_OUT;
packet->header.cmd = CMD_SEND;
@ -376,7 +381,7 @@ static int iguanair_tx(struct rc_dev *dev, unsigned *txbuf, unsigned count)
rc = iguanair_receiver(ir, false);
if (rc) {
dev_warn(ir->dev, "disable receiver before transmit failed\n");
goto out;
goto out_kfree;
}
}
@ -392,11 +397,12 @@ static int iguanair_tx(struct rc_dev *dev, unsigned *txbuf, unsigned count)
dev_warn(ir->dev, "re-enable receiver after transmit failed\n");
}
out_kfree:
kfree(packet);
out:
mutex_unlock(&ir->lock);
kfree(packet);
return rc;
return rc ? rc : count;
}
static int iguanair_open(struct rc_dev *rdev)
@ -444,7 +450,7 @@ static int __devinit iguanair_probe(struct usb_interface *intf,
ir = kzalloc(sizeof(*ir), GFP_KERNEL);
rc = rc_allocate_device();
if (!ir || !rc) {
ret = ENOMEM;
ret = -ENOMEM;
goto out;
}
@ -453,7 +459,7 @@ static int __devinit iguanair_probe(struct usb_interface *intf,
ir->urb_in = usb_alloc_urb(0, GFP_KERNEL);
if (!ir->buf_in || !ir->urb_in) {
ret = ENOMEM;
ret = -ENOMEM;
goto out;
}