diff options
author | Dan Streetman <ddstreet@ieee.org> | 2015-07-22 14:26:32 -0400 |
---|---|---|
committer | Herbert Xu <herbert@gondor.apana.org.au> | 2015-07-23 18:14:30 +0800 |
commit | 90fd73f912f0897bc22351b55925a4962c045086 (patch) | |
tree | 0428b6881e38f2b3dabc725d566672aaa1f93849 /drivers/crypto/nx | |
parent | 039af9675fd9ce2bc1d0b02b9cb10ca9fd7a5445 (diff) | |
download | op-kernel-dev-90fd73f912f0897bc22351b55925a4962c045086.zip op-kernel-dev-90fd73f912f0897bc22351b55925a4962c045086.tar.gz |
crypto: nx - remove pSeries NX 'status' field
Remove the 'status' field from the pSeries NX driver data.
The 'status' field isn't used by the driver at all; it simply checks the
devicetree status node at initialization, and returns success if 'okay'
and failure otherwise.
Signed-off-by: Dan Streetman <ddstreet@ieee.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'drivers/crypto/nx')
-rw-r--r-- | drivers/crypto/nx/nx-842-pseries.c | 39 |
1 files changed, 10 insertions, 29 deletions
diff --git a/drivers/crypto/nx/nx-842-pseries.c b/drivers/crypto/nx/nx-842-pseries.c index fc59520..b375877 100644 --- a/drivers/crypto/nx/nx-842-pseries.c +++ b/drivers/crypto/nx/nx-842-pseries.c @@ -99,11 +99,6 @@ struct nx842_workmem { #define NX842_HW_PAGE_SIZE (4096) #define NX842_HW_PAGE_MASK (~(NX842_HW_PAGE_SIZE-1)) -enum nx842_status { - UNAVAILABLE, - AVAILABLE -}; - struct ibm_nx842_counters { atomic64_t comp_complete; atomic64_t comp_failed; @@ -121,7 +116,6 @@ static struct nx842_devdata { unsigned int max_sg_len; unsigned int max_sync_size; unsigned int max_sync_sg; - enum nx842_status status; } __rcu *devdata; static DEFINE_SPINLOCK(devdata_mutex); @@ -537,48 +531,36 @@ static int nx842_OF_set_defaults(struct nx842_devdata *devdata) devdata->max_sync_size = 0; devdata->max_sync_sg = 0; devdata->max_sg_len = 0; - devdata->status = UNAVAILABLE; return 0; } else return -ENOENT; } /** - * nx842_OF_upd_status -- Update the device info from OF status prop + * nx842_OF_upd_status -- Check the device info from OF status prop * * The status property indicates if the accelerator is enabled. If the * device is in the OF tree it indicates that the hardware is present. * The status field indicates if the device is enabled when the status * is 'okay'. Otherwise the device driver will be disabled. * - * @devdata - struct nx842_devdata to update * @prop - struct property point containing the maxsyncop for the update * * Returns: * 0 - Device is available * -ENODEV - Device is not available */ -static int nx842_OF_upd_status(struct nx842_devdata *devdata, - struct property *prop) { - int ret = 0; +static int nx842_OF_upd_status(struct property *prop) +{ const char *status = (const char *)prop->value; - if (!strncmp(status, "okay", (size_t)prop->length)) { - devdata->status = AVAILABLE; - } else { - /* - * Caller will log that the device is disabled, so only - * output if there is an unexpected status. - */ - if (strncmp(status, "disabled", (size_t)prop->length)) { - dev_info(devdata->dev, "%s: status '%s' is not 'okay'\n", - __func__, status); - } - devdata->status = UNAVAILABLE; - ret = -ENODEV; - } + if (!strncmp(status, "okay", (size_t)prop->length)) + return 0; + if (!strncmp(status, "disabled", (size_t)prop->length)) + return -ENODEV; + dev_info(devdata->dev, "%s: unknown status '%s'\n", __func__, status); - return ret; + return -EINVAL; } /** @@ -784,7 +766,7 @@ static int nx842_OF_upd(struct property *new_prop) goto out; /* Perform property updates */ - ret = nx842_OF_upd_status(new_devdata, status); + ret = nx842_OF_upd_status(status); if (ret) goto error_out; @@ -1100,7 +1082,6 @@ static int __init nx842_pseries_init(void) pr_err("Could not allocate memory for device data\n"); return -ENOMEM; } - new_devdata->status = UNAVAILABLE; RCU_INIT_POINTER(devdata, new_devdata); ret = vio_register_driver(&nx842_vio_driver); |