staging: ti dspbridge: deh: trivial cleanups

No functional changes.
Signed-off-by: Felipe Contreras <felipe.contreras@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

drivers/staging/tidspbridge/core/ue_deh.c

@@ -52,11 +52,6 @@
 #include <dspbridge/io_sm.h>
 
 
-static struct hw_mmu_map_attrs_t map_attrs = { HW_LITTLE_ENDIAN,
-	HW_ELEM_SIZE16BIT,
-	HW_MMU_CPUES
-};
-
 static void *dummy_va_addr;
 
 int bridge_deh_create(struct deh_mgr **ret_deh_mgr,
@@ -71,23 +66,20 @@ int bridge_deh_create(struct deh_mgr **ret_deh_mgr,
 	 *  the base image. */
 	/* Get Bridge context info. */
 	dev_get_bridge_context(hdev_obj, &hbridge_context);
-	DBC_ASSERT(hbridge_context);
-	dummy_va_addr = NULL;
 	/* Allocate IO manager object: */
 	deh_mgr = kzalloc(sizeof(struct deh_mgr), GFP_KERNEL);
 	if (!deh_mgr) {
 		status = -ENOMEM;
-		goto leave;
+		goto err;
 	}
 
 	/* Create an NTFY object to manage notifications */
 	deh_mgr->ntfy_obj = kmalloc(sizeof(struct ntfy_object), GFP_KERNEL);
-	if (deh_mgr->ntfy_obj) {
-		ntfy_init(deh_mgr->ntfy_obj);
-	} else {
+	if (!deh_mgr->ntfy_obj) {
 		status = -ENOMEM;
 		goto err;
 	}
+	ntfy_init(deh_mgr->ntfy_obj);
 
 	/* Create a MMUfault DPC */
 	tasklet_init(&deh_mgr->dpc_tasklet, mmu_fault_dpc, (u32) deh_mgr);
@@ -100,22 +92,17 @@ int bridge_deh_create(struct deh_mgr **ret_deh_mgr,
 	deh_mgr->err_info.dw_val3 = 0L;
 
 	/* Install ISR function for DSP MMU fault */
-	if ((request_irq(INT_DSP_MMU_IRQ, mmu_fault_isr, 0,
-					"DspBridge\tiommu fault",
-					(void *)deh_mgr)) == 0)
-		status = 0;
-	else
-		status = -EPERM;
+	status = request_irq(INT_DSP_MMU_IRQ, mmu_fault_isr, 0,
+			"DspBridge\tiommu fault", deh_mgr);
+	if (status < 0)
+		goto err;
 
-err:
-	if (DSP_FAILED(status)) {
-		/* If create failed, cleanup */
-		bridge_deh_destroy(deh_mgr);
-		deh_mgr = NULL;
-	}
-leave:
 	*ret_deh_mgr = deh_mgr;
+	return 0;
 
+err:
+	bridge_deh_destroy(deh_mgr);
+	*ret_deh_mgr = NULL;
 	return status;
 }
 
@@ -147,33 +134,32 @@ int bridge_deh_register_notify(struct deh_mgr *deh_mgr, u32 event_mask,
 		u32 notify_type,
 		struct dsp_notification *hnotification)
 {
-	int status = 0;
-
 	if (!deh_mgr)
 		return -EFAULT;
 
 	if (event_mask)
-		status = ntfy_register(deh_mgr->ntfy_obj, hnotification,
+		return ntfy_register(deh_mgr->ntfy_obj, hnotification,
 				event_mask, notify_type);
 	else
-		status = ntfy_unregister(deh_mgr->ntfy_obj, hnotification);
-
-	return status;
+		return ntfy_unregister(deh_mgr->ntfy_obj, hnotification);
 }
 
 void bridge_deh_notify(struct deh_mgr *deh_mgr, u32 ulEventMask, u32 dwErrInfo)
 {
 	struct bridge_dev_context *dev_context;
-	int status = 0;
 	u32 hw_mmu_max_tlb_count = 31;
 	struct cfg_hostres *resources;
-	hw_status hw_status_obj;
+	struct hw_mmu_map_attrs_t map_attrs = {
+		.endianism = HW_LITTLE_ENDIAN,
+		.element_size = HW_ELEM_SIZE16BIT,
+		.mixed_size = HW_MMU_CPUES,
+	};
 
 	if (!deh_mgr)
 		return;
 
 	dev_info(bridge, "%s: device exception\n", __func__);
-	dev_context = (struct bridge_dev_context *)deh_mgr->hbridge_context;
+	dev_context = deh_mgr->hbridge_context;
 	resources = dev_context->resources;
 
 	switch (ulEventMask) {
@@ -200,8 +186,6 @@ void bridge_deh_notify(struct deh_mgr *deh_mgr, u32 ulEventMask, u32 dwErrInfo)
 			(unsigned int) deh_mgr->err_info.dw_val2,
 			(unsigned int) fault_addr);
 		dummy_va_addr = (void*)__get_free_page(GFP_ATOMIC);
-		dev_context = (struct bridge_dev_context *)
-			deh_mgr->hbridge_context;
 
 		print_dsp_trace_buffer(dev_context);
 		dump_dl_modules(dev_context);
@@ -216,13 +200,10 @@ void bridge_deh_notify(struct deh_mgr *deh_mgr, u32 ulEventMask, u32 dwErrInfo)
 			dev_context->num_tlb_entries =
 				dev_context->fixed_tlb_entries;
 		}
-		if (DSP_SUCCEEDED(status)) {
-			hw_status_obj =
 		hw_mmu_tlb_add(resources->dw_dmmu_base,
 				virt_to_phys(dummy_va_addr), fault_addr,
 				HW_PAGE_SIZE4KB, 1,
 				&map_attrs, HW_SET, HW_SET);
-		}
 
 		dsp_clk_enable(DSP_CLK_GPT8);
 
@@ -231,7 +212,7 @@ void bridge_deh_notify(struct deh_mgr *deh_mgr, u32 ulEventMask, u32 dwErrInfo)
 		/* Clear MMU interrupt */
 		hw_mmu_event_ack(resources->dw_dmmu_base,
 				HW_MMU_TRANSLATION_FAULT);
-		dump_dsp_stack(deh_mgr->hbridge_context);
+		dump_dsp_stack(dev_context);
 		dsp_clk_disable(DSP_CLK_GPT8);
 		break;
 #ifdef CONFIG_BRIDGE_NTFY_PWRERR
@@ -281,9 +262,6 @@ void bridge_deh_notify(struct deh_mgr *deh_mgr, u32 ulEventMask, u32 dwErrInfo)
 int bridge_deh_get_info(struct deh_mgr *deh_mgr,
 		struct dsp_errorinfo *pErrInfo)
 {
-	DBC_REQUIRE(deh_mgr);
-	DBC_REQUIRE(pErrInfo);
-
 	if (!deh_mgr)
 		return -EFAULT;