diff options
| author | André Fabian Silva Delgado <emulatorman@parabola.nu> | 2016-03-25 03:53:42 -0300 |
|---|---|---|
| committer | André Fabian Silva Delgado <emulatorman@parabola.nu> | 2016-03-25 03:53:42 -0300 |
| commit | 03dd4cb26d967f9588437b0fc9cc0e8353322bb7 (patch) | |
| tree | fa581f6dc1c0596391690d1f67eceef3af8246dc /drivers/crypto/nx | |
| parent | d4e493caf788ef44982e131ff9c786546904d934 (diff) | |
Linux-libre 4.5-gnu
Diffstat (limited to 'drivers/crypto/nx')
| -rw-r--r-- | drivers/crypto/nx/nx-842-powernv.c | 23 |
1 files changed, 12 insertions, 11 deletions
diff --git a/drivers/crypto/nx/nx-842-powernv.c b/drivers/crypto/nx/nx-842-powernv.c index 9ef51fafd..1710f80a0 100644 --- a/drivers/crypto/nx/nx-842-powernv.c +++ b/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) @@ -525,7 +529,6 @@ static int nx842_powernv_decompress(const unsigned char *in, unsigned int inlen, static int __init nx842_powernv_probe(struct device_node *dn) { struct nx842_coproc *coproc; - struct property *ct_prop, *ci_prop; unsigned int ct, ci; int chip_id; @@ -534,18 +537,16 @@ static int __init nx842_powernv_probe(struct device_node *dn) pr_err("ibm,chip-id missing\n"); return -EINVAL; } - ct_prop = of_find_property(dn, "ibm,842-coprocessor-type", NULL); - if (!ct_prop) { + + if (of_property_read_u32(dn, "ibm,842-coprocessor-type", &ct)) { pr_err("ibm,842-coprocessor-type missing\n"); return -EINVAL; } - ct = be32_to_cpu(*(unsigned int *)ct_prop->value); - ci_prop = of_find_property(dn, "ibm,842-coprocessor-instance", NULL); - if (!ci_prop) { + + if (of_property_read_u32(dn, "ibm,842-coprocessor-instance", &ci)) { pr_err("ibm,842-coprocessor-instance missing\n"); return -EINVAL; } - ci = be32_to_cpu(*(unsigned int *)ci_prop->value); coproc = kmalloc(sizeof(*coproc), GFP_KERNEL); if (!coproc) |