1 files changed, 72 insertions, 0 deletions

diff --git a/recipes-kernel/linux/linux-ti33x-psp-3.2/3.2.22/0004-hwrng-atmel-rng-fix-data-valid-check.patch b/recipes-kernel/linux/linux-ti33x-psp-3.2/3.2.22/0004-hwrng-atmel-rng-fix-data-valid-check.patch
new file mode 100644
index 00000000..85105deb
--- /dev/null
+++ b/recipes-kernel/linux/linux-ti33x-psp-3.2/3.2.22/0004-hwrng-atmel-rng-fix-data-valid-check.patch
@@ -0,0 +1,72 @@
+From 28a0aa72b2ef00a665564ea05846ad22cb3f18ee Mon Sep 17 00:00:00 2001
+From: Peter Korsgaard <jacmet@sunsite.dk>
+Date: Tue, 12 Jun 2012 08:27:04 +0800
+Subject: [PATCH 04/46] hwrng: atmel-rng - fix data valid check
+
+commit c475c06f4bb689d6ad87d7512e036d6dface3160 upstream.
+
+Brown paper bag: Data valid is LSB of the ISR (status register), and NOT
+of ODATA (current random data word)!
+
+With this, rngtest is a lot happier. Before:
+
+rngtest 3
+Copyright (c) 2004 by Henrique de Moraes Holschuh
+This is free software; see the source for copying conditions.  There is NO warr.
+
+rngtest: starting FIPS tests...
+rngtest: bits received from input: 20000032
+rngtest: FIPS 140-2 successes: 3
+rngtest: FIPS 140-2 failures: 997
+rngtest: FIPS 140-2(2001-10-10) Monobit: 604
+rngtest: FIPS 140-2(2001-10-10) Poker: 996
+rngtest: FIPS 140-2(2001-10-10) Runs: 36
+rngtest: FIPS 140-2(2001-10-10) Long run: 0
+rngtest: FIPS 140-2(2001-10-10) Continuous run: 117
+rngtest: input channel speed: (min=622.371; avg=23682.481; max=28224.350)Kibitss
+rngtest: FIPS tests speed: (min=12.361; avg=12.718; max=12.861)Mibits/s
+rngtest: Program run time: 2331696 microsecondsx
+
+After:
+rngtest 3
+Copyright (c) 2004 by Henrique de Moraes Holschuh
+This is free software; see the source for copying conditions.  There is NO warr.
+
+rngtest: starting FIPS tests...
+rngtest: bits received from input: 20000032
+rngtest: FIPS 140-2 successes: 999
+rngtest: FIPS 140-2 failures: 1
+rngtest: FIPS 140-2(2001-10-10) Monobit: 0
+rngtest: FIPS 140-2(2001-10-10) Poker: 0
+rngtest: FIPS 140-2(2001-10-10) Runs: 1
+rngtest: FIPS 140-2(2001-10-10) Long run: 0
+rngtest: FIPS 140-2(2001-10-10) Continuous run: 0
+rngtest: input channel speed: (min=777.363; avg=43588.270; max=47870.711)Kibitss
+rngtest: FIPS tests speed: (min=11.943; avg=12.716; max=12.844)Mibits/s
+rngtest: Program run time: 1955282 microseconds
+
+Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>
+Reported-by: George Pontis <GPontis@z9.com>
+Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com>
+Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
+Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
+---
+ drivers/char/hw_random/atmel-rng.c |    2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/drivers/char/hw_random/atmel-rng.c b/drivers/char/hw_random/atmel-rng.c
+index 0477982..1b5675b 100644
+--- a/drivers/char/hw_random/atmel-rng.c
++++ b/drivers/char/hw_random/atmel-rng.c
+@@ -34,7 +34,7 @@ static int atmel_trng_read(struct hwrng *rng, void *buf, size_t max,
+        u32 *data = buf;
+ 
+        /* data ready? */
+-       if (readl(trng->base + TRNG_ODATA) & 1) {
++       if (readl(trng->base + TRNG_ISR) & 1) {
+                *data = readl(trng->base + TRNG_ODATA);
+                /*
+                  ensure data ready is only set again AFTER the next data
+-- 
+1.7.10
+