Re: [PATCH v2 1/7] [media] rc-main: assign driver type during allocation
From: Andi Shyti
Date: Fri Sep 02 2016 - 01:25:23 EST
Hi Sean,
> > ir = kzalloc(sizeof(*ir), GFP_KERNEL);
> > - dev = rc_allocate_device();
> > + dev = rc_allocate_device(RC_DRIVER_IR_RAW);
> > if (!ir || !dev)
> > goto err_out_free;
> >
>
> If ir->sampling = 0 then it should be RC_DRIVER_SCANCODE.
>
>
> > @@ -481,7 +481,6 @@ int cx88_ir_init(struct cx88_core *core, struct pci_dev *pci)
> > dev->scancode_mask = hardware_mask;
> >
> > if (ir->sampling) {
> > - dev->driver_type = RC_DRIVER_IR_RAW;
> > dev->timeout = 10 * 1000 * 1000; /* 10 ms */
> > } else {
> > dev->driver_type = RC_DRIVER_SCANCODE;
>
> That assignment shouldn't really be there any more.
I think this doesn't change the driver's behavior, because I
either do like:
- dev = rc_allocate_device();
+ dev = rc_allocate_device(RC_DRIVER_SCANCODE);
[ ... ]
if (ir->sampling) {
dev->driver_type = RC_DRIVER_IR_RAW;
dev->timeout = 10 * 1000 * 1000; /* 10 ms */
} else {
- dev->driver_type = RC_DRIVER_SCANCODE;
Or I would need to do aftr the long switch...case statement
+ if (ir->sampling) {
+ dev = rc_allocate_device(RC_DRIVER_IR_RAW);
+ ...
+ } else {
+ dev = rc_allocate_device(RC_DRIVER_SCANCODE);
+ ...
I prefered the first way because it doesn't alter much the
driver.
> > ir = kzalloc(sizeof(*ir), GFP_KERNEL);
> > - rc = rc_allocate_device();
> > + rc = rc_allocate_device(RC_DRIVER_SCANCODE);
> > if (!ir || !rc) {
> > err = -ENOMEM;
> > goto err_out_free;
>
> This is not correct, I'm afraid. If you look at the code you can see that
> if raw_decode is true, then it should be RC_DRIVER_IR_RAW.
Same here, the driver doesn't change the behavior. raw_decode can
be both 'true' or 'false' it's set as default RC_DRIVER_SCANCODE
and depending on value of raw_decode it's chaged to
RC_DRIVER_IR_RAW.
also in this case I can do
+ if (raw_decode) {
+ rc = rc_allocate_device(RC_DRIVER_IR_RAW);
+ ...
+ } else {
+ rc = rc_allocate_device(RC_DRIVER_SCANCODE);
+ ...
but also in this case my original approach doesn't add much
changes.
Thanks,
Andi