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tpm: simplify: tpm_set_global_lock()

When in pack_byte_string() memcpy() is called for size 0 the source buffer
address has no relevance. So we can use NULL here.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Reviewed-by: Simon Glass <sjg@chromium.org>
Heinrich Schuchardt 5 years ago
parent
commit
c7cd4afb92
1 changed files with 1 additions and 3 deletions
  1. 1 3
      lib/tpm-v1.c

+ 1 - 3
lib/tpm-v1.c

@@ -211,9 +211,7 @@ u32 tpm_nv_write_value(struct udevice *dev, u32 index, const void *data,
 
 uint32_t tpm_set_global_lock(struct udevice *dev)
 {
-	u32 x;
-
-	return tpm_nv_write_value(dev, TPM_NV_INDEX_0, (uint8_t *)&x, 0);
+	return tpm_nv_write_value(dev, TPM_NV_INDEX_0, NULL, 0);
 }
 
 u32 tpm_extend(struct udevice *dev, u32 index, const void *in_digest,