Hi,
* Guenter Roeck <linux@xxxxxxxxxxxx> [150817 13:48]:
> Commit 0b50dc4fc971 ("Convert smsc911x to use ACPI as well as DT") makes
> the call to smsc911x_probe_config() unconditional, and no longer fails if
> there is no device node. device_get_phy_mode() is called unconditionally,
> and if there is no phy node configured returns an error code. This error
> code is assigned to phy_interface, and interpreted elsewhere in the code
> as valid phy mode. This in turn causes qemu to crash when running a
> variant of realview_pb_defconfig.
>
> qemu: hardware error: lan9118_read: Bad reg 0x86
>
> Fixes: 0b50dc4fc971 ("Convert smsc911x to use ACPI as well as DT")
> Cc: Jeremy Linton <jeremy.linton@xxxxxxx>
> Cc Graeme Gregory <graeme.gregory@xxxxxxxxxx>
> Signed-off-by: Guenter Roeck <linux@xxxxxxxxxxxx>
> ---
> drivers/net/ethernet/smsc/smsc911x.c | 7 ++++++-
> 1 file changed, 6 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/net/ethernet/smsc/smsc911x.c b/drivers/net/ethernet/smsc/smsc911x.c
> index 0f21aa3bb537..34f97684506b 100644
> --- a/drivers/net/ethernet/smsc/smsc911x.c
> +++ b/drivers/net/ethernet/smsc/smsc911x.c
> @@ -2367,12 +2367,17 @@ static const struct smsc911x_ops shifted_smsc911x_ops = {
> static int smsc911x_probe_config(struct smsc911x_platform_config *config,
> struct device *dev)
> {
> + int phy_interface;
> u32 width = 0;
>
> if (!dev)
> return -ENODEV;
>
> - config->phy_interface = device_get_phy_mode(dev);
> + phy_interface = device_get_phy_mode(dev);
> + if (phy_interface < 0)
> + return phy_interface;
> +
> + config->phy_interface = phy_interface;
>
> device_get_mac_address(dev, config->mac, ETH_ALEN);
Looks like this change makes at least omap boards using smsc911x
fail with -22 for me in Linux next.
Do any of the the device tree configured smsc911x devices actually
have a phy configured?
Regards,
Tony
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