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fusee: Fix race condition involving volatile reads
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1 changed files with 4 additions and 3 deletions
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@ -226,9 +226,10 @@ void smmu_emulate_tsec(void *tsec_keys, const void *package1, size_t package1_si
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uint32_t old_key_data = *key_data;
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uint32_t buf_counter = 0;
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while (!(tsec->FALCON_CPUCTL & 0x10)) {
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if (*key_data != old_key_data) {
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old_key_data = *key_data;
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key_buf[buf_counter] = *key_data;
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const uint32_t new_key_data = *key_data;
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if (new_key_data != old_key_data) {
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old_key_data = new_key_data;
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key_buf[buf_counter] = new_key_data;
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buf_counter++;
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}
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}
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