* Kevin Hilman <khilman@xxxxxx> [120306 16:07]:
> commit e4b0b2cbbb (ARM: OMAP2+: gpmc-smsc911x: add required smsc911x
> regulators) added regulators which are registered during
> gpmc_smsc911x_init(). However, some platforms (OMAP3/Overo) have more
> than one instance of the SMSC911x and result in attempting to register
> the same regulator more than once which causes a panic().
>
> Fix this by only registering the regulator when the platform_data id
> field is zero, indicating its the first instance.
>
> Cc: Matt Porter <mporter@xxxxxx>
> Signed-off-by: Kevin Hilman <khilman@xxxxxx>
> ---
> Fix needed for v3.3.
> Applies on top of Tony's fixes branch.
>
> arch/arm/mach-omap2/gpmc-smsc911x.c | 11 +++++++----
> 1 file changed, 7 insertions(+), 4 deletions(-)
>
> diff --git a/arch/arm/mach-omap2/gpmc-smsc911x.c b/arch/arm/mach-omap2/gpmc-smsc911x.c
> index bbb870c..4d6f1c6 100644
> --- a/arch/arm/mach-omap2/gpmc-smsc911x.c
> +++ b/arch/arm/mach-omap2/gpmc-smsc911x.c
> @@ -101,10 +101,13 @@ void __init gpmc_smsc911x_init(struct omap_smsc911x_platform_data *board_data)
>
> gpmc_cfg = board_data;
>
> - ret = platform_device_register(&gpmc_smsc911x_regulator);
> - if (ret < 0) {
> - pr_err("Unable to register smsc911x regulators: %d\n", ret);
> - return;
> + if (!gpmc_cfg) {
Shouldn't this be !gpmc_cfg->id instead..
> + ret = platform_device_register(&gpmc_smsc911x_regulator);
> + if (ret < 0) {
> + pr_err("Unable to register smsc911x regulators: %d\n",
> + ret);
> + return;
> + }
> }
>
> if (gpmc_cs_request(gpmc_cfg->cs, SZ_16M, &cs_mem_base) < 0) {
..because we have gpmc_cfg always passed to gpmc_smsc911x_init().
Regards,
Tony
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