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staging: comedi: jr3_pci: pass transform by reference

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Local function `set_transforms` has a parameter of type `struct
jr3_pci_transform`.  This has a size 32 bytes, which is quite large for
passing around in a function call.  Change it to use type `const struct
jr3_pci_transform *`.  (In practice, it is probably inlined by the
compiler anyway, but doing this seems to save a few bytes.)

Signed-off-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Ian Abbott 2017-02-17 11:09:17 +00:00 committed by Greg Kroah-Hartman
parent 4af8c81951
commit 8c8022fcd8
1 changed files with 5 additions and 5 deletions
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10
drivers/staging/comedi/drivers/jr3_pci.c
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@ -141,19 +141,19 @@ static int is_complete(struct jr3_channel __iomem *channel)
}
static void set_transforms(struct jr3_channel __iomem *channel,
struct jr3_pci_transform transf, short num)
const struct jr3_pci_transform *transf, short num)
{
int i;
num &= 0x000f; /* Make sure that 0 <= num <= 15 */
for (i = 0; i < 8; i++) {
set_u16(&channel->transforms[num].link[i].link_type,
transf.link[i].link_type);
transf->link[i].link_type);
udelay(1);
set_s16(&channel->transforms[num].link[i].link_amount,
transf.link[i].link_amount);
transf->link[i].link_amount);
udelay(1);
if (transf.link[i].link_type == end_x_form)
if (transf->link[i].link_type == end_x_form)
break;
}
}
@ -505,7 +505,7 @@ jr3_pci_poll_subdevice(struct comedi_subdevice *s)
transf.link[i].link_amount = 0;
}
set_transforms(channel, transf, 0);
set_transforms(channel, &transf, 0);
use_transform(channel, 0);
spriv->state = state_jr3_init_transform_complete;
/* Allow 20 ms for completion */