On Sat, Sep 13, 2014 at 01:06:50AM +0200, Frans Klaver wrote:
> In show_available_cpufv, show_cpufv, and store_cpufv, errors from
> get_cpufv are mapped to -ENODEV. To paint a clear picture to callers,
> propagate the errors instead.
>
Ooops, should have forwarded this one around instead. I generally agree with
this approach, but do want confirmation from Greg and others that this is
an acceptable change to the sysfs interface.
--
Darren
> Signed-off-by: Frans Klaver <fransklaver@xxxxxxxxx>
> ---
> drivers/platform/x86/eeepc-laptop.c | 16 ++++++++++------
> 1 file changed, 10 insertions(+), 6 deletions(-)
>
> diff --git a/drivers/platform/x86/eeepc-laptop.c b/drivers/platform/x86/eeepc-laptop.c
> index 828db56..732b012 100644
> --- a/drivers/platform/x86/eeepc-laptop.c
> +++ b/drivers/platform/x86/eeepc-laptop.c
> @@ -351,8 +351,9 @@ static ssize_t show_available_cpufv(struct device *dev,
> int i;
> ssize_t len = 0;
>
> - if (get_cpufv(eeepc, &c))
> - return -ENODEV;
> + i = get_cpufv(eeepc, &c);
> + if (i)
> + return i;
> for (i = 0; i < c.num; i++)
> len += sprintf(buf + len, "%d ", i);
> len += sprintf(buf + len, "\n");
> @@ -365,9 +366,11 @@ static ssize_t show_cpufv(struct device *dev,
> {
> struct eeepc_laptop *eeepc = dev_get_drvdata(dev);
> struct eeepc_cpufv c;
> + int rv;
>
> - if (get_cpufv(eeepc, &c))
> - return -ENODEV;
> + rv = get_cpufv(eeepc, &c);
> + if (rv)
> + return rv;
> return sprintf(buf, "%#x\n", (c.num << 8) | c.cur);
> }
>
> @@ -381,8 +384,9 @@ static ssize_t store_cpufv(struct device *dev,
>
> if (eeepc->cpufv_disabled)
> return -EPERM;
> - if (get_cpufv(eeepc, &c))
> - return -ENODEV;
> + rv = get_cpufv(eeepc, &c);
> + if (rv)
> + return rv;
> rv = parse_arg(buf, &value);
> if (rv < 0)
> return rv;
> --
> 2.1.0
>
> --
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>
--
Darren Hart
Intel Open Source Technology Center
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