On Thu, 5 Dec 2013 14:52:12 -0800, Florian Fainelli <[email protected]> wrote:
> From: Florian Fainelli <[email protected]>
>
> If irq_of_parse_and_map fails to find an interrupt line for a given PHY,
> we will force the PHY interrupt to be PHY_POLL, completely overriding
> the previous value that the MDIO bus may have set for us (e.g:
> PHY_IGNORE_INTERRUPT). In case of failure, just restore the previous
> value.
>
> Signed-off-by: Florian Fainelli <[email protected]>
> ---
> drivers/of/of_mdio.c | 5 +++--
> 1 file changed, 3 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/of/of_mdio.c b/drivers/of/of_mdio.c
> index f93ebca..4923ab2 100644
> --- a/drivers/of/of_mdio.c
> +++ b/drivers/of/of_mdio.c
> @@ -27,7 +27,7 @@ static int of_mdiobus_register_phy(struct mii_bus *mdio,
> struct device_node *chi
> {
> struct phy_device *phy;
> bool is_c45;
> - int rc;
> + int rc, prev_irq;
>
> is_c45 = of_device_is_compatible(child,
> "ethernet-phy-ieee802.3-c45");
> @@ -37,10 +37,11 @@ static int of_mdiobus_register_phy(struct mii_bus *mdio,
> struct device_node *chi
> return 1;
>
> if (mdio->irq) {
> + prev_irq= mdio->irq[addr];
> mdio->irq[addr] =
> irq_of_parse_and_map(child, 0);
> if (!mdio->irq[addr])
> - mdio->irq[addr] = PHY_POLL;
> + mdio->irq[addr] = prev_irq;
> }
Nit, the logic is a little weird the way it is written after the change.
I'd rather see:
if (mdio->irq) {
irq = irq_of_parse_and_map(child, 0);
if (irq)
mdio->irq[addr] = irq;
}
Or even more concise:
if (mdio->irq && irq = irq_of_parse_and_map(child, 0))
mdio->irq[addr] = irq;
g.
Regardless,
Acked-by: Grant Likely <[email protected]>
g.
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