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mbedtls: Don't use tf_snprintf if option not defined 

If `MBEDTLS_PLATFORM_SNPRINTF_ALT` isn't used, the function
`mbedtls_platform_set_snprintf()` isn't defined.

In case a platform uses a different mbed TLS configuration file than
the one provided by the Trusted Firmware, and it doesn't define the
mentioned build option, this will result in a build error.

This patch modifies the initialization code so that
`mbedtls_platform_set_snprintf()` is only used if
`MBEDTLS_PLATFORM_SNPRINTF_ALT` is defined, allowing platforms to use
it or not depending on their needs.

Change-Id: I1d5c86d57e9b2871ba463030bf89210ebec5178e
Signed-off-by: Antonio Nino Diaz <antonio.ninodiaz@arm.com>
This commit is contained in:
Antonio Nino Diaz 2017-06-06 10:54:39 +01:00
parent 4d96cad5b2
commit c46c18c598
1 changed files with 3 additions and 0 deletions
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3
drivers/auth/mbedtls/mbedtls_common.c
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@ -9,6 +9,7 @@
/* mbed TLS headers */
#include <mbedtls/memory_buffer_alloc.h>
#include <mbedtls/platform.h>
#include <mbedtls_config.h>
/*
* mbed TLS heap
@ -31,8 +32,10 @@ void mbedtls_init(void)
/* Initialize the mbed TLS heap */
mbedtls_memory_buffer_alloc_init(heap, MBEDTLS_HEAP_SIZE);
#ifdef MBEDTLS_PLATFORM_SNPRINTF_ALT
/* Use reduced version of snprintf to save space. */
mbedtls_platform_set_snprintf(tf_snprintf);
#endif
ready = 1;
}