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authorDan Streetman <ddstreet@ieee.org>2015-07-22 14:26:32 -0400
committerHerbert Xu <herbert@gondor.apana.org.au>2015-07-23 18:14:30 +0800
commit90fd73f912f0897bc22351b55925a4962c045086 (patch)
tree0428b6881e38f2b3dabc725d566672aaa1f93849 /drivers/crypto/nx
parent039af9675fd9ce2bc1d0b02b9cb10ca9fd7a5445 (diff)
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.c39
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 fc5952000357..b3758779dc3e 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);