Re: [PATCH part1 v2 8/9] ps3flash: Refuse to work in lpars other than OtherOS

[Geoff Levand <geoff@infradead.org>]

On 08/11/2011 12:31 PM, Andre Heider wrote:
> The driver implements a character and misc device, meant for the
> axed OtherOS to exchange various settings with GameOS.
> Since Firmware 3.21 there is no support anymore to write these
> settings, so test if we're running in OtherOS, and refuse to load
> if that is not the case.

Please see my comments to the v1 patch regarding this text.

> Signed-off-by: Andre Heider <a.heider@gmail.com>
> ---
>  arch/powerpc/platforms/ps3/Kconfig |    2 +-
>  drivers/char/ps3flash.c            |    7 +++++++
>  2 files changed, 8 insertions(+), 1 deletions(-)
> 
> diff --git a/arch/powerpc/platforms/ps3/Kconfig b/arch/powerpc/platforms/ps3/Kconfig
> index 84df5c8..72fdecd 100644
> --- a/arch/powerpc/platforms/ps3/Kconfig
> +++ b/arch/powerpc/platforms/ps3/Kconfig
> @@ -121,7 +121,7 @@ config PS3_FLASH
>  
>  	  This support is required to access the PS3 FLASH ROM, which
>  	  contains the boot loader and some boot options.
> -	  In general, all users will say Y or M.
> +	  In general, all PS3 OtherOS users will say Y or M.
>  
>  	  As this driver needs a fixed buffer of 256 KiB of memory, it can
>  	  be disabled on the kernel command line using "ps3flash=off", to
> diff --git a/drivers/char/ps3flash.c b/drivers/char/ps3flash.c
> index d0c57c2..fc6d867 100644
> --- a/drivers/char/ps3flash.c
> +++ b/drivers/char/ps3flash.c
> @@ -25,6 +25,7 @@
>  
>  #include <asm/lv1call.h>
>  #include <asm/ps3stor.h>
> +#include <asm/firmware.h>
>  
>  
>  #define DEVICE_NAME		"ps3flash"
> @@ -464,6 +465,12 @@ static struct ps3_system_bus_driver ps3flash = {
>  
>  static int __init ps3flash_init(void)
>  {
> +	if (!firmware_has_feature(FW_FEATURE_PS3_LV1))
> +		return -ENODEV;
> +
> +	if (ps3_get_ss_laid() != PS3_SS_LAID_OTHEROS)
> +		return -ENODEV;
> +
>  	return ps3_system_bus_driver_register(&ps3flash);
>  }
>