crypto: inside-secure - Fix stability issue with Macchiatobin

This patch corrects an error in the Transform Record Cache initialization
code that was causing intermittent stability problems on the Macchiatobin
board.

Unfortunately, due to HW platform specifics, the problem could not happen
on the main development platform, being the VCU118 Xilinx development
board. And since it was a problem with hash table access, it was very
dependent on the actual physical context record DMA buffers being used,
i.e. with some (bad) luck it could seemingly work quit stable for a while.

Signed-off-by: Pascal van Leeuwen <pvanleeuwen@verimatrix.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

diff --git a/drivers/crypto/inside-secure/safexcel.c b/drivers/crypto/inside-secure/safexcel.c
index 094b581c194ef5f8df13cc1e53a0f09ad1a7796d..93227ba69c78c68b7e7d24a3e3a3ebc3ca911ec6 100644 (file)
--- a/drivers/crypto/inside-secure/safexcel.c
+++ b/drivers/crypto/inside-secure/safexcel.c
@@ -221,9 +221,9 @@ static void eip197_trc_cache_init(struct safexcel_crypto_priv *priv)
        /* Step #3: Determine log2 of hash table size */
        cs_ht_sz = __fls(asize - cs_rc_max) - 2;
        /* Step #4: determine current size of hash table in dwords */
-       cs_ht_wc = 16<<cs_ht_sz; /* dwords, not admin words */
+       cs_ht_wc = 16 << cs_ht_sz; /* dwords, not admin words */
        /* Step #5: add back excess words and see if we can fit more records */
-       cs_rc_max = min_t(uint, cs_rc_abs_max, asize - (cs_ht_wc >> 4));
+       cs_rc_max = min_t(uint, cs_rc_abs_max, asize - (cs_ht_wc >> 2));
 
        /* Clear the cache RAMs */
        eip197_trc_cache_clear(priv, cs_rc_max, cs_ht_wc);