cxl: Split afu_register_irqs() function

Split the afu_register_irqs() function so that different parts can
be useful elsewhere.

Signed-off-by: Michael Neuling <mikey@neuling.org>
Acked-by: Ian Munsie <imunsie@au1.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>

drivers/misc/cxl/cxl.h

@@ -672,5 +672,6 @@ int cxl_psl_purge(struct cxl_afu *afu);
 void cxl_stop_trace(struct cxl *cxl);
 
 extern struct pci_driver cxl_pci_driver;
+int afu_allocate_irqs(struct cxl_context *ctx, u32 count);
 
 #endif

drivers/misc/cxl/irq.c

@@ -416,9 +416,8 @@ void afu_irq_name_free(struct cxl_context *ctx)
 	}
 }
 
-int afu_register_irqs(struct cxl_context *ctx, u32 count)
+int afu_allocate_irqs(struct cxl_context *ctx, u32 count)
 {
-	irq_hw_number_t hwirq;
 	int rc, r, i, j = 1;
 	struct cxl_irq_name *irq_name;
 
@@ -458,6 +457,18 @@ int afu_register_irqs(struct cxl_context *ctx, u32 count)
 			j++;
 		}
 	}
+	return 0;
+
+out:
+	afu_irq_name_free(ctx);
+	return -ENOMEM;
+}
+
+void afu_register_hwirqs(struct cxl_context *ctx)
+{
+	irq_hw_number_t hwirq;
+	struct cxl_irq_name *irq_name;
+	int r,i;
 
 	/* We've allocated all memory now, so let's do the irq allocations */
 	irq_name = list_first_entry(&ctx->irq_names, struct cxl_irq_name, list);
@@ -469,14 +480,20 @@ int afu_register_irqs(struct cxl_context *ctx, u32 count)
 			irq_name = list_next_entry(irq_name, list);
 		}
 	}
-
-	return 0;
-
-out:
-	afu_irq_name_free(ctx);
-	return -ENOMEM;
 }
 
+int afu_register_irqs(struct cxl_context *ctx, u32 count)
+{
+	int rc;
+
+	rc = afu_allocate_irqs(ctx, count);
+	if (rc)
+		return rc;
+
+	afu_register_hwirqs(ctx);
+	return 0;
+ }
+
 void afu_release_irqs(struct cxl_context *ctx, void *cookie)
 {
 	irq_hw_number_t hwirq;