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Commit 3103249d authored by Linux Build Service Account's avatar Linux Build Service Account Committed by Gerrit - the friendly Code Review server
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Merge "drivers: soc: qcom: Use number of bytes returned from PRNG for entropy"

parents 7177eaed d67723c6

drivers/soc/qcom/early_random.c

+10 −1
Original line number Original line Diff line number Diff line
@@ -56,9 +56,18 @@ void __init init_random_pool(void) 
					&desc);

					&desc);





	if (!ret) {

	if (!ret) {

		u64 bytes_received = desc.ret[0];



		if (bytes_received != SZ_512)

			pr_warn("Did not receive the expected number of bytes from PRNG: %llu\n",

				bytes_received);



		dmac_inv_range(random_buffer, random_buffer +

		dmac_inv_range(random_buffer, random_buffer +

						RANDOM_BUFFER_SIZE);

						RANDOM_BUFFER_SIZE);

		add_hwgenerator_randomness(random_buffer, SZ_512, SZ_512 << 3);

		bytes_received = (bytes_received <= RANDOM_BUFFER_SIZE) ?

					bytes_received : RANDOM_BUFFER_SIZE;

		add_hwgenerator_randomness(random_buffer, bytes_received,

					   bytes_received << 3);

	}

	}

}

}