diff options
Diffstat (limited to 'kernel/drivers/crypto/nx/nx-842-powernv.c')
| -rw-r--r-- | kernel/drivers/crypto/nx/nx-842-powernv.c | 12 |
1 files changed, 8 insertions, 4 deletions
diff --git a/kernel/drivers/crypto/nx/nx-842-powernv.c b/kernel/drivers/crypto/nx/nx-842-powernv.c index 9ef51fafd..6e105e87b 100644 --- a/kernel/drivers/crypto/nx/nx-842-powernv.c +++ b/kernel/drivers/crypto/nx/nx-842-powernv.c @@ -442,6 +442,14 @@ static int nx842_powernv_function(const unsigned char *in, unsigned int inlen, (unsigned int)ccw, (unsigned int)be32_to_cpu(crb->ccw)); + /* + * NX842 coprocessor sets 3rd bit in CR register with XER[S0]. + * XER[S0] is the integer summary overflow bit which is nothing + * to do NX. Since this bit can be set with other return values, + * mask this bit. + */ + ret &= ~ICSWX_XERS0; + switch (ret) { case ICSWX_INITIATED: ret = wait_for_csb(wmem, csb); @@ -454,10 +462,6 @@ static int nx842_powernv_function(const unsigned char *in, unsigned int inlen, pr_err_ratelimited("ICSWX rejected\n"); ret = -EPROTO; break; - default: - pr_err_ratelimited("Invalid ICSWX return code %x\n", ret); - ret = -EPROTO; - break; } if (!ret) |