crypto/nx: Rename nx842_powernv_function as icswx function

Rename nx842_powernv_function to nx842_powernv_exec.
nx842_powernv_exec points to nx842_exec_icswx and
will be point to VAS exec function which will be added later
for P9 NX support.
Signed-off-by: Haren Myneni <haren@us.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>

drivers/crypto/nx/nx-842-powernv.c

@@ -54,7 +54,11 @@ struct nx842_coproc {
 
 /* no cpu hotplug on powernv, so this list never changes after init */
 static LIST_HEAD(nx842_coprocs);
-static unsigned int nx842_ct;
+static unsigned int nx842_ct;	/* used in icswx function */
+
+static int (*nx842_powernv_exec)(const unsigned char *in,
+				unsigned int inlen, unsigned char *out,
+				unsigned int *outlenp, void *workmem, int fc);
 
 /**
  * setup_indirect_dde - Setup an indirect DDE
@@ -355,7 +359,7 @@ static int wait_for_csb(struct nx842_workmem *wmem,
 }
 
 /**
- * nx842_powernv_function - compress/decompress data using the 842 algorithm
+ * nx842_exec_icswx - compress/decompress data using the 842 algorithm
  *
  * (De)compression provided by the NX842 coprocessor on IBM PowerNV systems.
  * This compresses or decompresses the provided input buffer into the provided
@@ -385,7 +389,7 @@ static int wait_for_csb(struct nx842_workmem *wmem,
  *   -ETIMEDOUT	hardware did not complete operation in reasonable time
  *   -EINTR	operation was aborted
  */
-static int nx842_powernv_function(const unsigned char *in, unsigned int inlen,
+static int nx842_exec_icswx(const unsigned char *in, unsigned int inlen,
 				  unsigned char *out, unsigned int *outlenp,
 				  void *workmem, int fc)
 {
@@ -489,13 +493,13 @@ static int nx842_powernv_function(const unsigned char *in, unsigned int inlen,
  * @workmem: working memory buffer pointer, size determined by
  *           nx842_powernv_driver.workmem_size
  *
- * Returns: see @nx842_powernv_function()
+ * Returns: see @nx842_powernv_exec()
  */
 static int nx842_powernv_compress(const unsigned char *in, unsigned int inlen,
 				  unsigned char *out, unsigned int *outlenp,
 				  void *wmem)
 {
-	return nx842_powernv_function(in, inlen, out, outlenp,
+	return nx842_powernv_exec(in, inlen, out, outlenp,
 				      wmem, CCW_FC_842_COMP_CRC);
 }
 
@@ -517,13 +521,13 @@ static int nx842_powernv_compress(const unsigned char *in, unsigned int inlen,
  * @workmem: working memory buffer pointer, size determined by
  *           nx842_powernv_driver.workmem_size
  *
- * Returns: see @nx842_powernv_function()
+ * Returns: see @nx842_powernv_exec()
  */
 static int nx842_powernv_decompress(const unsigned char *in, unsigned int inlen,
 				    unsigned char *out, unsigned int *outlenp,
 				    void *wmem)
 {
-	return nx842_powernv_function(in, inlen, out, outlenp,
+	return nx842_powernv_exec(in, inlen, out, outlenp,
 				      wmem, CCW_FC_842_DECOMP_CRC);
 }
 
@@ -625,6 +629,8 @@ static __init int nx842_powernv_init(void)
 	if (!nx842_ct)
 		return -ENODEV;
 
+	nx842_powernv_exec = nx842_exec_icswx;
+
 	ret = crypto_register_alg(&nx842_powernv_alg);
 	if (ret) {
 		struct nx842_coproc *coproc, *n;