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[media] lirc_dev: place buffer allocation on separate function 

During the driver registration, move the buffer allocation on a
separate function.

Signed-off-by: Andi Shyti <andi.shyti@samsung.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
This commit is contained in:
Andi Shyti 2016-07-06 06:01:13 -03:00 committed by Mauro Carvalho Chehab
parent 199946731f
commit 6fa99e1af1
1 changed files with 34 additions and 23 deletions
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57
drivers/media/rc/lirc_dev.c
View File

@ -203,13 +203,41 @@ static int lirc_cdev_add(struct irctl *ir)
return retval;
}
static int lirc_allocate_buffer(struct irctl *ir)
{
int err;
int bytes_in_key;
unsigned int chunk_size;
unsigned int buffer_size;
struct lirc_driver *d = &ir->d;
bytes_in_key = BITS_TO_LONGS(d->code_length) +
(d->code_length % 8 ? 1 : 0);
buffer_size = d->buffer_size ? d->buffer_size : BUFLEN / bytes_in_key;
chunk_size = d->chunk_size ? d->chunk_size : bytes_in_key;
if (d->rbuf) {
ir->buf = d->rbuf;
} else {
ir->buf = kmalloc(sizeof(struct lirc_buffer), GFP_KERNEL);
if (!ir->buf)
return -ENOMEM;
err = lirc_buffer_init(ir->buf, chunk_size, buffer_size);
if (err) {
kfree(ir->buf);
return err;
}
}
ir->chunk_size = ir->buf->chunk_size;
return 0;
}
int lirc_register_driver(struct lirc_driver *d)
{
struct irctl *ir;
int minor;
int bytes_in_key;
unsigned int chunk_size;
unsigned int buffer_size;
int err;
if (!d) {
@ -314,26 +342,9 @@ int lirc_register_driver(struct lirc_driver *d)
/* some safety check 8-) */
d->name[sizeof(d->name)-1] = '\0';
bytes_in_key = BITS_TO_LONGS(d->code_length) +
(d->code_length % 8 ? 1 : 0);
buffer_size = d->buffer_size ? d->buffer_size : BUFLEN / bytes_in_key;
chunk_size = d->chunk_size ? d->chunk_size : bytes_in_key;
if (d->rbuf) {
ir->buf = d->rbuf;
} else {
ir->buf = kmalloc(sizeof(struct lirc_buffer), GFP_KERNEL);
if (!ir->buf) {
err = -ENOMEM;
goto out_lock;
}
err = lirc_buffer_init(ir->buf, chunk_size, buffer_size);
if (err) {
kfree(ir->buf);
goto out_lock;
}
}
ir->chunk_size = ir->buf->chunk_size;
err = lirc_allocate_buffer(ir);
if (err)
goto out_lock;
if (d->features == 0)
d->features = LIRC_CAN_REC_LIRCCODE;