linux-kernel - Re: [PATCH v2 2/3] ARM: OMAP2+: Introduce check for OP-TEE in omap_secure

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Date:   Tue, 17 Dec 2019 20:00:59 -0500
From:   "Andrew F. Davis" <afd@...com>
To:     Tony Lindgren <tony@...mide.com>
CC:     <linux-omap@...r.kernel.org>, <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v2 2/3] ARM: OMAP2+: Introduce check for OP-TEE in
 omap_secure_init()

On 12/17/19 7:53 PM, Tony Lindgren wrote:
> * Andrew F. Davis <afd@...com> [191217 23:48]:
>> --- a/arch/arm/mach-omap2/omap-secure.c
>> +++ b/arch/arm/mach-omap2/omap-secure.c
>> @@ -20,6 +21,18 @@
>>  
>>  static phys_addr_t omap_secure_memblock_base;
>>  
>> +bool optee_available;
> 
> The above can be static bool optee_available?
> 
>> --- a/arch/arm/mach-omap2/omap-secure.h
>> +++ b/arch/arm/mach-omap2/omap-secure.h
>> @@ -10,6 +10,8 @@
>>  #ifndef OMAP_ARCH_OMAP_SECURE_H
>>  #define OMAP_ARCH_OMAP_SECURE_H
>>  
>> +#include <linux/types.h>
>> +
>>  /* Monitor error code */
>>  #define  API_HAL_RET_VALUE_NS2S_CONVERSION_ERROR	0xFFFFFFFE
>>  #define  API_HAL_RET_VALUE_SERVICE_UNKNWON		0xFFFFFFFF
>> @@ -72,6 +74,7 @@ extern u32 rx51_secure_dispatcher(u32 idx, u32 process, u32 flag, u32 nargs,
>>  extern u32 rx51_secure_update_aux_cr(u32 set_bits, u32 clear_bits);
>>  extern u32 rx51_secure_rng_call(u32 ptr, u32 count, u32 flag);
>>  
>> +extern bool optee_available;
>>  void omap_secure_init(void);
> 
> And then this change should not be needed, right?
> 

I have a staged change I'm about to post that makes use of this flag
from outside of omap-secure.c, otherwise I would have left it internal
to that file.

I could also have moved the flag in the patch that uses it, but it
seemed like an unnecessary change given I know it will be needed here soon.

Andrew

> Otherwise series looks OK to me, thanks for updating it.
> 
> Regards,
> 
> Tony
>