dmaengine: pl330: Merge dma_pl330_dmac and pl330_dmac structs

Both the dma_pl330_dmac and the pl330_dmac struct have the same lifetime and the
separation of them is a relict of this having been two different drivers in the
past. Merging them into one struct makes the code a bit simpler as it for
example allows to remove the pointers going back and forth between the two
structs.

While we are at it also directly embed the pl330_info struct into the
pl330_dmac struct as this allows to remove some more redundant fields.
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>

drivers/dma/pl330.c

@@ -282,20 +282,6 @@ struct pl330_config {
 	u32		irq_ns;
 };
 
-/* Handle to the DMAC provided to the PL330 core */
-struct pl330_info {
-	/* Owning device */
-	struct device *dev;
-	/* Size of MicroCode buffers for each channel. */
-	unsigned mcbufsz;
-	/* ioremap'ed address of PL330 registers. */
-	void __iomem	*base;
-	/* PL330 core data, Client must not touch it. */
-	void	*pl330_data;
-	/* Populated by the PL330 core driver during pl330_add */
-	struct pl330_config	pcfg;
-};
-
 /**
  * Request Configuration.
  * The PL330 core does not modify this and uses the last
@@ -426,30 +412,6 @@ enum pl330_dmac_state {
 	DYING,
 };
 
-/* A DMAC */
-struct pl330_dmac {
-	spinlock_t		lock;
-	/* Holds list of reqs with due callbacks */
-	struct list_head	req_done;
-	/* Pointer to platform specific stuff */
-	struct pl330_info	*pinfo;
-	/* Maximum possible events/irqs */
-	int			events[32];
-	/* BUS address of MicroCode buffer */
-	dma_addr_t		mcode_bus;
-	/* CPU address of MicroCode buffer */
-	void			*mcode_cpu;
-	/* List of all Channel threads */
-	struct pl330_thread	*channels;
-	/* Pointer to the MANAGER thread */
-	struct pl330_thread	*manager;
-	/* To handle bad news in interrupt */
-	struct tasklet_struct	tasks;
-	struct _pl330_tbd	dmac_tbd;
-	/* State of DMAC operation */
-	enum pl330_dmac_state	state;
-};
-
 enum desc_status {
 	/* In the DMAC pool */
 	FREE,
@@ -490,7 +452,7 @@ struct dma_pl330_chan {
 	 * As the parent, this DMAC also provides descriptors
 	 * to the channel.
 	 */
-	struct dma_pl330_dmac *dmac;
+	struct pl330_dmac *dmac;
 
 	/* To protect channel manipulation */
 	spinlock_t lock;
@@ -510,9 +472,7 @@ struct dma_pl330_chan {
 	bool cyclic;
 };
 
-struct dma_pl330_dmac {
-	struct pl330_info pif;
-
+struct pl330_dmac {
 	/* DMA-Engine Device */
 	struct dma_device ddma;
 
@@ -524,6 +484,32 @@ struct dma_pl330_dmac {
 	/* To protect desc_pool manipulation */
 	spinlock_t pool_lock;
 
+	/* Size of MicroCode buffers for each channel. */
+	unsigned mcbufsz;
+	/* ioremap'ed address of PL330 registers. */
+	void __iomem	*base;
+	/* Populated by the PL330 core driver during pl330_add */
+	struct pl330_config	pcfg;
+
+	spinlock_t		lock;
+	/* Maximum possible events/irqs */
+	int			events[32];
+	/* BUS address of MicroCode buffer */
+	dma_addr_t		mcode_bus;
+	/* CPU address of MicroCode buffer */
+	void			*mcode_cpu;
+	/* List of all Channel threads */
+	struct pl330_thread	*channels;
+	/* Pointer to the MANAGER thread */
+	struct pl330_thread	*manager;
+	/* To handle bad news in interrupt */
+	struct tasklet_struct	tasks;
+	struct _pl330_tbd	dmac_tbd;
+	/* State of DMAC operation */
+	enum pl330_dmac_state	state;
+	/* Holds list of reqs with due callbacks */
+	struct list_head        req_done;
+
 	/* Peripheral channels connected to this DMAC */
 	unsigned int num_peripherals;
 	struct dma_pl330_chan *peripherals; /* keep at end */
@@ -568,9 +554,7 @@ static inline bool is_manager(struct pl330_thread *thrd)
 /* If manager of the thread is in Non-Secure mode */
 static inline bool _manager_ns(struct pl330_thread *thrd)
 {
-	struct pl330_dmac *pl330 = thrd->dmac;
-
-	return (pl330->pinfo->pcfg.mode & DMAC_MODE_NS) ? true : false;
+	return (thrd->dmac->pcfg.mode & DMAC_MODE_NS) ? true : false;
 }
 
 static inline u32 get_revision(u32 periph_id)
@@ -928,7 +912,7 @@ static inline u32 _emit_GO(unsigned dry_run, u8 buf[],
 /* Returns Time-Out */
 static bool _until_dmac_idle(struct pl330_thread *thrd)
 {
-	void __iomem *regs = thrd->dmac->pinfo->base;
+	void __iomem *regs = thrd->dmac->base;
 	unsigned long loops = msecs_to_loops(5);
 
 	do {
@@ -948,7 +932,7 @@ static bool _until_dmac_idle(struct pl330_thread *thrd)
 static inline void _execute_DBGINSN(struct pl330_thread *thrd,
 		u8 insn[], bool as_manager)
 {
-	void __iomem *regs = thrd->dmac->pinfo->base;
+	void __iomem *regs = thrd->dmac->base;
 	u32 val;
 
 	val = (insn[0] << 16) | (insn[1] << 24);
@@ -963,7 +947,7 @@ static inline void _execute_DBGINSN(struct pl330_thread *thrd,
 
 	/* If timed out due to halted state-machine */
 	if (_until_dmac_idle(thrd)) {
-		dev_err(thrd->dmac->pinfo->dev, "DMAC halted!\n");
+		dev_err(thrd->dmac->ddma.dev, "DMAC halted!\n");
 		return;
 	}
 
@@ -988,7 +972,7 @@ static void mark_free(struct pl330_thread *thrd, int idx)
 
 static inline u32 _state(struct pl330_thread *thrd)
 {
-	void __iomem *regs = thrd->dmac->pinfo->base;
+	void __iomem *regs = thrd->dmac->base;
 	u32 val;
 
 	if (is_manager(thrd))
@@ -1046,7 +1030,7 @@ static inline u32 _state(struct pl330_thread *thrd)
 
 static void _stop(struct pl330_thread *thrd)
 {
-	void __iomem *regs = thrd->dmac->pinfo->base;
+	void __iomem *regs = thrd->dmac->base;
 	u8 insn[6] = {0, 0, 0, 0, 0, 0};
 
 	if (_state(thrd) == PL330_STATE_FAULT_COMPLETING)
@@ -1069,7 +1053,7 @@ static void _stop(struct pl330_thread *thrd)
 /* Start doing req 'idx' of thread 'thrd' */
 static bool _trigger(struct pl330_thread *thrd)
 {
-	void __iomem *regs = thrd->dmac->pinfo->base;
+	void __iomem *regs = thrd->dmac->base;
 	struct _pl330_req *req;
 	struct pl330_req *r;
 	struct _arg_GO go;
@@ -1107,7 +1091,7 @@ static bool _trigger(struct pl330_thread *thrd)
 
 	/* See 'Abort Sources' point-4 at Page 2-25 */
 	if (_manager_ns(thrd) && !ns)
-		dev_info(thrd->dmac->pinfo->dev, "%s:%d Recipe for ABORT!\n",
+		dev_info(thrd->dmac->ddma.dev, "%s:%d Recipe for ABORT!\n",
 			__func__, __LINE__);
 
 	go.chan = thrd->id;
@@ -1421,8 +1405,7 @@ static inline u32 _prepare_ccr(const struct pl330_reqcfg *rqc)
  */
 static int pl330_submit_req(struct pl330_thread *thrd, struct pl330_req *r)
 {
-	struct pl330_dmac *pl330;
-	struct pl330_info *pi;
+	struct pl330_dmac *pl330 = thrd->dmac;
 	struct _xfer_spec xs;
 	unsigned long flags;
 	void __iomem *regs;
@@ -1434,20 +1417,18 @@ static int pl330_submit_req(struct pl330_thread *thrd, struct pl330_req *r)
 	if (!r || !thrd || thrd->free)
 		return -EINVAL;
 
-	pl330 = thrd->dmac;
-	pi = pl330->pinfo;
-	regs = pi->base;
+	regs = thrd->dmac->base;
 
 	if (pl330->state == DYING
 		|| pl330->dmac_tbd.reset_chan & (1 << thrd->id)) {
-		dev_info(thrd->dmac->pinfo->dev, "%s:%d\n",
+		dev_info(thrd->dmac->ddma.dev, "%s:%d\n",
 			__func__, __LINE__);
 		return -EAGAIN;
 	}
 
 	/* If request for non-existing peripheral */
-	if (r->rqtype != DMA_MEM_TO_MEM && r->peri >= pi->pcfg.num_peri) {
-		dev_info(thrd->dmac->pinfo->dev,
+	if (r->rqtype != DMA_MEM_TO_MEM && r->peri >= pl330->pcfg.num_peri) {
+		dev_info(thrd->dmac->ddma.dev,
 				"%s:%d Invalid peripheral(%u)!\n",
 				__func__, __LINE__, r->peri);
 		return -EINVAL;
@@ -1484,9 +1465,8 @@ static int pl330_submit_req(struct pl330_thread *thrd, struct pl330_req *r)
 	if (ret < 0)
 		goto xfer_exit;
 
-	if (ret > pi->mcbufsz / 2) {
-		dev_info(thrd->dmac->pinfo->dev,
-			"%s:%d Trying increasing mcbufsz\n",
+	if (ret > pl330->mcbufsz / 2) {
+		dev_info(pl330->ddma.dev, "%s:%d Trying increasing mcbufsz\n",
 				__func__, __LINE__);
 		ret = -ENOMEM;
 		goto xfer_exit;
@@ -1527,7 +1507,6 @@ static void dma_pl330_rqcb(struct pl330_req *req, enum pl330_op_err err)
 static void pl330_dotask(unsigned long data)
 {
 	struct pl330_dmac *pl330 = (struct pl330_dmac *) data;
-	struct pl330_info *pi = pl330->pinfo;
 	unsigned long flags;
 	int i;
 
@@ -1545,16 +1524,16 @@ static void pl330_dotask(unsigned long data)
 	if (pl330->dmac_tbd.reset_mngr) {
 		_stop(pl330->manager);
 		/* Reset all channels */
-		pl330->dmac_tbd.reset_chan = (1 << pi->pcfg.num_chan) - 1;
+		pl330->dmac_tbd.reset_chan = (1 << pl330->pcfg.num_chan) - 1;
 		/* Clear the reset flag */
 		pl330->dmac_tbd.reset_mngr = false;
 	}
 
-	for (i = 0; i < pi->pcfg.num_chan; i++) {
+	for (i = 0; i < pl330->pcfg.num_chan; i++) {
 
 		if (pl330->dmac_tbd.reset_chan & (1 << i)) {
 			struct pl330_thread *thrd = &pl330->channels[i];
-			void __iomem *regs = pi->base;
+			void __iomem *regs = pl330->base;
 			enum pl330_op_err err;
 
 			_stop(thrd);
@@ -1585,20 +1564,15 @@ static void pl330_dotask(unsigned long data)
 }
 
 /* Returns 1 if state was updated, 0 otherwise */
-static int pl330_update(const struct pl330_info *pi)
+static int pl330_update(struct pl330_dmac *pl330)
 {
 	struct pl330_req *rqdone, *tmp;
-	struct pl330_dmac *pl330;
 	unsigned long flags;
 	void __iomem *regs;
 	u32 val;
 	int id, ev, ret = 0;
 
-	if (!pi || !pi->pl330_data)
-		return 0;
-
-	regs = pi->base;
-	pl330 = pi->pl330_data;
+	regs = pl330->base;
 
 	spin_lock_irqsave(&pl330->lock, flags);
 
@@ -1608,13 +1582,13 @@ static int pl330_update(const struct pl330_info *pi)
 	else
 		pl330->dmac_tbd.reset_mngr = false;
 
-	val = readl(regs + FSC) & ((1 << pi->pcfg.num_chan) - 1);
+	val = readl(regs + FSC) & ((1 << pl330->pcfg.num_chan) - 1);
 	pl330->dmac_tbd.reset_chan |= val;
 	if (val) {
 		int i = 0;
-		while (i < pi->pcfg.num_chan) {
+		while (i < pl330->pcfg.num_chan) {
 			if (val & (1 << i)) {
-				dev_info(pi->dev,
+				dev_info(pl330->ddma.dev,
 					"Reset Channel-%d\t CS-%x FTC-%x\n",
 						i, readl(regs + CS(i)),
 						readl(regs + FTC(i)));
@@ -1626,15 +1600,16 @@ static int pl330_update(const struct pl330_info *pi)
 
 	/* Check which event happened i.e, thread notified */
 	val = readl(regs + ES);
-	if (pi->pcfg.num_events < 32
-			&& val & ~((1 << pi->pcfg.num_events) - 1)) {
+	if (pl330->pcfg.num_events < 32
+			&& val & ~((1 << pl330->pcfg.num_events) - 1)) {
 		pl330->dmac_tbd.reset_dmac = true;
-		dev_err(pi->dev, "%s:%d Unexpected!\n", __func__, __LINE__);
+		dev_err(pl330->ddma.dev, "%s:%d Unexpected!\n", __func__,
+			__LINE__);
 		ret = 1;
 		goto updt_exit;
 	}
 
-	for (ev = 0; ev < pi->pcfg.num_events; ev++) {
+	for (ev = 0; ev < pl330->pcfg.num_events; ev++) {
 		if (val & (1 << ev)) { /* Event occurred */
 			struct pl330_thread *thrd;
 			u32 inten = readl(regs + INTEN);
@@ -1744,10 +1719,9 @@ static int pl330_chan_ctrl(struct pl330_thread *thrd, enum pl330_chan_op op)
 static inline int _alloc_event(struct pl330_thread *thrd)
 {
 	struct pl330_dmac *pl330 = thrd->dmac;
-	struct pl330_info *pi = pl330->pinfo;
 	int ev;
 
-	for (ev = 0; ev < pi->pcfg.num_events; ev++)
+	for (ev = 0; ev < pl330->pcfg.num_events; ev++)
 		if (pl330->events[ev] == -1) {
 			pl330->events[ev] = thrd->id;
 			return ev;
@@ -1756,37 +1730,31 @@ static inline int _alloc_event(struct pl330_thread *thrd)
 	return -1;
 }
 
-static bool _chan_ns(const struct pl330_info *pi, int i)
+static bool _chan_ns(const struct pl330_dmac *pl330, int i)
 {
-	return pi->pcfg.irq_ns & (1 << i);
+	return pl330->pcfg.irq_ns & (1 << i);
 }
 
 /* Upon success, returns IdentityToken for the
  * allocated channel, NULL otherwise.
  */
-static struct pl330_thread *pl330_request_channel(const struct pl330_info *pi)
+static struct pl330_thread *pl330_request_channel(struct pl330_dmac *pl330)
 {
 	struct pl330_thread *thrd = NULL;
-	struct pl330_dmac *pl330;
 	unsigned long flags;
 	int chans, i;
 
-	if (!pi || !pi->pl330_data)
-		return NULL;
-
-	pl330 = pi->pl330_data;
-
 	if (pl330->state == DYING)
 		return NULL;
 
-	chans = pi->pcfg.num_chan;
+	chans = pl330->pcfg.num_chan;
 
 	spin_lock_irqsave(&pl330->lock, flags);
 
 	for (i = 0; i < chans; i++) {
 		thrd = &pl330->channels[i];
 		if ((thrd->free) && (!_manager_ns(thrd) ||
-					_chan_ns(pi, i))) {
+					_chan_ns(pl330, i))) {
 			thrd->ev = _alloc_event(thrd);
 			if (thrd->ev >= 0) {
 				thrd->free = false;
@@ -1810,10 +1778,9 @@ static struct pl330_thread *pl330_request_channel(const struct pl330_info *pi)
 static inline void _free_event(struct pl330_thread *thrd, int ev)
 {
 	struct pl330_dmac *pl330 = thrd->dmac;
-	struct pl330_info *pi = pl330->pinfo;
 
 	/* If the event is valid and was held by the thread */
-	if (ev >= 0 && ev < pi->pcfg.num_events
+	if (ev >= 0 && ev < pl330->pcfg.num_events
 			&& pl330->events[ev] == thrd->id)
 		pl330->events[ev] = -1;
 }
@@ -1842,72 +1809,70 @@ static void pl330_release_channel(struct pl330_thread *thrd)
 /* Initialize the structure for PL330 configuration, that can be used
  * by the client driver the make best use of the DMAC
  */
-static void read_dmac_config(struct pl330_info *pi)
+static void read_dmac_config(struct pl330_dmac *pl330)
 {
-	void __iomem *regs = pi->base;
+	void __iomem *regs = pl330->base;
 	u32 val;
 
 	val = readl(regs + CRD) >> CRD_DATA_WIDTH_SHIFT;
 	val &= CRD_DATA_WIDTH_MASK;
-	pi->pcfg.data_bus_width = 8 * (1 << val);
+	pl330->pcfg.data_bus_width = 8 * (1 << val);
 
 	val = readl(regs + CRD) >> CRD_DATA_BUFF_SHIFT;
 	val &= CRD_DATA_BUFF_MASK;
-	pi->pcfg.data_buf_dep = val + 1;
+	pl330->pcfg.data_buf_dep = val + 1;
 
 	val = readl(regs + CR0) >> CR0_NUM_CHANS_SHIFT;
 	val &= CR0_NUM_CHANS_MASK;
 	val += 1;
-	pi->pcfg.num_chan = val;
+	pl330->pcfg.num_chan = val;
 
 	val = readl(regs + CR0);
 	if (val & CR0_PERIPH_REQ_SET) {
 		val = (val >> CR0_NUM_PERIPH_SHIFT) & CR0_NUM_PERIPH_MASK;
 		val += 1;
-		pi->pcfg.num_peri = val;
-		pi->pcfg.peri_ns = readl(regs + CR4);
+		pl330->pcfg.num_peri = val;
+		pl330->pcfg.peri_ns = readl(regs + CR4);
 	} else {
-		pi->pcfg.num_peri = 0;
+		pl330->pcfg.num_peri = 0;
 	}
 
 	val = readl(regs + CR0);
 	if (val & CR0_BOOT_MAN_NS)
-		pi->pcfg.mode |= DMAC_MODE_NS;
+		pl330->pcfg.mode |= DMAC_MODE_NS;
 	else
-		pi->pcfg.mode &= ~DMAC_MODE_NS;
+		pl330->pcfg.mode &= ~DMAC_MODE_NS;
 
 	val = readl(regs + CR0) >> CR0_NUM_EVENTS_SHIFT;
 	val &= CR0_NUM_EVENTS_MASK;
 	val += 1;
-	pi->pcfg.num_events = val;
+	pl330->pcfg.num_events = val;
 
-	pi->pcfg.irq_ns = readl(regs + CR3);
+	pl330->pcfg.irq_ns = readl(regs + CR3);
 }
 
 static inline void _reset_thread(struct pl330_thread *thrd)
 {
 	struct pl330_dmac *pl330 = thrd->dmac;
-	struct pl330_info *pi = pl330->pinfo;
 
 	thrd->req[0].mc_cpu = pl330->mcode_cpu
-				+ (thrd->id * pi->mcbufsz);
+				+ (thrd->id * pl330->mcbufsz);
 	thrd->req[0].mc_bus = pl330->mcode_bus
-				+ (thrd->id * pi->mcbufsz);
+				+ (thrd->id * pl330->mcbufsz);
 	thrd->req[0].r = NULL;
 	mark_free(thrd, 0);
 
 	thrd->req[1].mc_cpu = thrd->req[0].mc_cpu
-				+ pi->mcbufsz / 2;
+				+ pl330->mcbufsz / 2;
 	thrd->req[1].mc_bus = thrd->req[0].mc_bus
-				+ pi->mcbufsz / 2;
+				+ pl330->mcbufsz / 2;
 	thrd->req[1].r = NULL;
 	mark_free(thrd, 1);
 }
 
 static int dmac_alloc_threads(struct pl330_dmac *pl330)
 {
-	struct pl330_info *pi = pl330->pinfo;
-	int chans = pi->pcfg.num_chan;
+	int chans = pl330->pcfg.num_chan;
 	struct pl330_thread *thrd;
 	int i;
 
@@ -1938,29 +1903,28 @@ static int dmac_alloc_threads(struct pl330_dmac *pl330)
 
 static int dmac_alloc_resources(struct pl330_dmac *pl330)
 {
-	struct pl330_info *pi = pl330->pinfo;
-	int chans = pi->pcfg.num_chan;
+	int chans = pl330->pcfg.num_chan;
 	int ret;
 
 	/*
 	 * Alloc MicroCode buffer for 'chans' Channel threads.
 	 * A channel's buffer offset is (Channel_Id * MCODE_BUFF_PERCHAN)
 	 */
-	pl330->mcode_cpu = dma_alloc_coherent(pi->dev,
-				chans * pi->mcbufsz,
+	pl330->mcode_cpu = dma_alloc_coherent(pl330->ddma.dev,
+				chans * pl330->mcbufsz,
 				&pl330->mcode_bus, GFP_KERNEL);
 	if (!pl330->mcode_cpu) {
-		dev_err(pi->dev, "%s:%d Can't allocate memory!\n",
+		dev_err(pl330->ddma.dev, "%s:%d Can't allocate memory!\n",
 			__func__, __LINE__);
 		return -ENOMEM;
 	}
 
 	ret = dmac_alloc_threads(pl330);
 	if (ret) {
-		dev_err(pi->dev, "%s:%d Can't to create channels for DMAC!\n",
+		dev_err(pl330->ddma.dev, "%s:%d Can't to create channels for DMAC!\n",
 			__func__, __LINE__);
-		dma_free_coherent(pi->dev,
-				chans * pi->mcbufsz,
+		dma_free_coherent(pl330->ddma.dev,
+				chans * pl330->mcbufsz,
 				pl330->mcode_cpu, pl330->mcode_bus);
 		return ret;
 	}
@@ -1968,64 +1932,45 @@ static int dmac_alloc_resources(struct pl330_dmac *pl330)
 	return 0;
 }
 
-static int pl330_add(struct pl330_info *pi)
+static int pl330_add(struct pl330_dmac *pl330)
 {
-	struct pl330_dmac *pl330;
 	void __iomem *regs;
 	int i, ret;
 
-	if (!pi || !pi->dev)
-		return -EINVAL;
-
-	/* If already added */
-	if (pi->pl330_data)
-		return -EINVAL;
-
-	regs = pi->base;
+	regs = pl330->base;
 
 	/* Check if we can handle this DMAC */
-	if ((pi->pcfg.periph_id & 0xfffff) != PERIPH_ID_VAL) {
-		dev_err(pi->dev, "PERIPH_ID 0x%x !\n", pi->pcfg.periph_id);
+	if ((pl330->pcfg.periph_id & 0xfffff) != PERIPH_ID_VAL) {
+		dev_err(pl330->ddma.dev, "PERIPH_ID 0x%x !\n",
+			pl330->pcfg.periph_id);
 		return -EINVAL;
 	}
 
 	/* Read the configuration of the DMAC */
-	read_dmac_config(pi);
+	read_dmac_config(pl330);
 
-	if (pi->pcfg.num_events == 0) {
-		dev_err(pi->dev, "%s:%d Can't work without events!\n",
+	if (pl330->pcfg.num_events == 0) {
+		dev_err(pl330->ddma.dev, "%s:%d Can't work without events!\n",
 			__func__, __LINE__);
 		return -EINVAL;
 	}
 
-	pl330 = kzalloc(sizeof(*pl330), GFP_KERNEL);
-	if (!pl330) {
-		dev_err(pi->dev, "%s:%d Can't allocate memory!\n",
-			__func__, __LINE__);
-		return -ENOMEM;
-	}
-
-	/* Assign the info structure and private data */
-	pl330->pinfo = pi;
-	pi->pl330_data = pl330;
-
 	spin_lock_init(&pl330->lock);
 
 	INIT_LIST_HEAD(&pl330->req_done);
 
 	/* Use default MC buffer size if not provided */
-	if (!pi->mcbufsz)
-		pi->mcbufsz = MCODE_BUFF_PER_REQ * 2;
+	if (!pl330->mcbufsz)
+		pl330->mcbufsz = MCODE_BUFF_PER_REQ * 2;
 
 	/* Mark all events as free */
-	for (i = 0; i < pi->pcfg.num_events; i++)
+	for (i = 0; i < pl330->pcfg.num_events; i++)
 		pl330->events[i] = -1;
 
 	/* Allocate resources needed by the DMAC */
 	ret = dmac_alloc_resources(pl330);
 	if (ret) {
-		dev_err(pi->dev, "Unable to create channels for DMAC\n");
-		kfree(pl330);
+		dev_err(pl330->ddma.dev, "Unable to create channels for DMAC\n");
 		return ret;
 	}
 
@@ -2038,13 +1983,11 @@ static int pl330_add(struct pl330_info *pi)
 
 static int dmac_free_threads(struct pl330_dmac *pl330)
 {
-	struct pl330_info *pi = pl330->pinfo;
-	int chans = pi->pcfg.num_chan;
 	struct pl330_thread *thrd;
 	int i;
 
 	/* Release Channel threads */
-	for (i = 0; i < chans; i++) {
+	for (i = 0; i < pl330->pcfg.num_chan; i++) {
 		thrd = &pl330->channels[i];
 		pl330_release_channel(thrd);
 	}
@@ -2055,35 +1998,18 @@ static int dmac_free_threads(struct pl330_dmac *pl330)
 	return 0;
 }
 
-static void dmac_free_resources(struct pl330_dmac *pl330)
+static void pl330_del(struct pl330_dmac *pl330)
 {
-	struct pl330_info *pi = pl330->pinfo;
-	int chans = pi->pcfg.num_chan;
-
-	dmac_free_threads(pl330);
-
-	dma_free_coherent(pi->dev, chans * pi->mcbufsz,
-				pl330->mcode_cpu, pl330->mcode_bus);
-}
-
-static void pl330_del(struct pl330_info *pi)
-{
-	struct pl330_dmac *pl330;
-
-	if (!pi || !pi->pl330_data)
-		return;
-
-	pl330 = pi->pl330_data;
-
 	pl330->state = UNINIT;
 
 	tasklet_kill(&pl330->tasks);
 
 	/* Free DMAC resources */
-	dmac_free_resources(pl330);
+	dmac_free_threads(pl330);
 
-	kfree(pl330);
-	pi->pl330_data = NULL;
+	dma_free_coherent(pl330->ddma.dev,
+		pl330->pcfg.num_chan * pl330->mcbufsz, pl330->mcode_cpu,
+		pl330->mcode_bus);
 }
 
 /* forward declaration */
@@ -2124,7 +2050,7 @@ static inline void fill_queue(struct dma_pl330_chan *pch)
 		} else {
 			/* Unacceptable request */
 			desc->status = DONE;
-			dev_err(pch->dmac->pif.dev, "%s:%d Bad Desc(%d)\n",
+			dev_err(pch->dmac->ddma.dev, "%s:%d Bad Desc(%d)\n",
 					__func__, __LINE__, desc->txd.cookie);
 			tasklet_schedule(&pch->task);
 		}
@@ -2198,23 +2124,26 @@ static struct dma_chan *of_dma_pl330_xlate(struct of_phandle_args *dma_spec,
 						struct of_dma *ofdma)
 {
 	int count = dma_spec->args_count;
-	struct dma_pl330_dmac *pdmac = ofdma->of_dma_data;
+	struct pl330_dmac *pl330 = ofdma->of_dma_data;
 	unsigned int chan_id;
 
+	if (!pl330)
+		return NULL;
+
 	if (count != 1)
 		return NULL;
 
 	chan_id = dma_spec->args[0];
-	if (chan_id >= pdmac->num_peripherals)
+	if (chan_id >= pl330->num_peripherals)
 		return NULL;
 
-	return dma_get_slave_channel(&pdmac->peripherals[chan_id].chan);
+	return dma_get_slave_channel(&pl330->peripherals[chan_id].chan);
 }
 
 static int pl330_alloc_chan_resources(struct dma_chan *chan)
 {
 	struct dma_pl330_chan *pch = to_pchan(chan);
-	struct dma_pl330_dmac *pdmac = pch->dmac;
+	struct pl330_dmac *pl330 = pch->dmac;
 	unsigned long flags;
 
 	spin_lock_irqsave(&pch->lock, flags);
@@ -2222,7 +2151,7 @@ static int pl330_alloc_chan_resources(struct dma_chan *chan)
 	dma_cookie_init(chan);
 	pch->cyclic = false;
 
-	pch->thread = pl330_request_channel(&pdmac->pif);
+	pch->thread = pl330_request_channel(pl330);
 	if (!pch->thread) {
 		spin_unlock_irqrestore(&pch->lock, flags);
 		return -ENOMEM;
@@ -2240,7 +2169,7 @@ static int pl330_control(struct dma_chan *chan, enum dma_ctrl_cmd cmd, unsigned
 	struct dma_pl330_chan *pch = to_pchan(chan);
 	struct dma_pl330_desc *desc;
 	unsigned long flags;
-	struct dma_pl330_dmac *pdmac = pch->dmac;
+	struct pl330_dmac *pl330 = pch->dmac;
 	struct dma_slave_config *slave_config;
 	LIST_HEAD(list);
 
@@ -2267,9 +2196,9 @@ static int pl330_control(struct dma_chan *chan, enum dma_ctrl_cmd cmd, unsigned
 			dma_cookie_complete(&desc->txd);
 		}
 
-		list_splice_tail_init(&pch->submitted_list, &pdmac->desc_pool);
-		list_splice_tail_init(&pch->work_list, &pdmac->desc_pool);
-		list_splice_tail_init(&pch->completed_list, &pdmac->desc_pool);
+		list_splice_tail_init(&pch->submitted_list, &pl330->desc_pool);
+		list_splice_tail_init(&pch->work_list, &pl330->desc_pool);
+		list_splice_tail_init(&pch->completed_list, &pl330->desc_pool);
 		spin_unlock_irqrestore(&pch->lock, flags);
 		break;
 	case DMA_SLAVE_CONFIG:
@@ -2292,7 +2221,7 @@ static int pl330_control(struct dma_chan *chan, enum dma_ctrl_cmd cmd, unsigned
 		}
 		break;
 	default:
-		dev_err(pch->dmac->pif.dev, "Not supported command.\n");
+		dev_err(pch->dmac->ddma.dev, "Not supported command.\n");
 		return -ENXIO;
 	}
 
@@ -2383,44 +2312,37 @@ static inline void _init_desc(struct dma_pl330_desc *desc)
 }
 
 /* Returns the number of descriptors added to the DMAC pool */
-static int add_desc(struct dma_pl330_dmac *pdmac, gfp_t flg, int count)
+static int add_desc(struct pl330_dmac *pl330, gfp_t flg, int count)
 {
 	struct dma_pl330_desc *desc;
 	unsigned long flags;
 	int i;
 
-	if (!pdmac)
-		return 0;
-
 	desc = kcalloc(count, sizeof(*desc), flg);
 	if (!desc)
 		return 0;
 
-	spin_lock_irqsave(&pdmac->pool_lock, flags);
+	spin_lock_irqsave(&pl330->pool_lock, flags);
 
 	for (i = 0; i < count; i++) {
 		_init_desc(&desc[i]);
-		list_add_tail(&desc[i].node, &pdmac->desc_pool);
+		list_add_tail(&desc[i].node, &pl330->desc_pool);
 	}
 
-	spin_unlock_irqrestore(&pdmac->pool_lock, flags);
+	spin_unlock_irqrestore(&pl330->pool_lock, flags);
 
 	return count;
 }
 
-static struct dma_pl330_desc *
-pluck_desc(struct dma_pl330_dmac *pdmac)
+static struct dma_pl330_desc *pluck_desc(struct pl330_dmac *pl330)
 {
 	struct dma_pl330_desc *desc = NULL;
 	unsigned long flags;
 
-	if (!pdmac)
-		return NULL;
+	spin_lock_irqsave(&pl330->pool_lock, flags);
 
-	spin_lock_irqsave(&pdmac->pool_lock, flags);
-
-	if (!list_empty(&pdmac->desc_pool)) {
-		desc = list_entry(pdmac->desc_pool.next,
+	if (!list_empty(&pl330->desc_pool)) {
+		desc = list_entry(pl330->desc_pool.next,
 				struct dma_pl330_desc, node);
 
 		list_del_init(&desc->node);
@@ -2429,29 +2351,29 @@ pluck_desc(struct dma_pl330_dmac *pdmac)
 		desc->txd.callback = NULL;
 	}
 
-	spin_unlock_irqrestore(&pdmac->pool_lock, flags);
+	spin_unlock_irqrestore(&pl330->pool_lock, flags);
 
 	return desc;
 }
 
 static struct dma_pl330_desc *pl330_get_desc(struct dma_pl330_chan *pch)
 {
-	struct dma_pl330_dmac *pdmac = pch->dmac;
+	struct pl330_dmac *pl330 = pch->dmac;
 	u8 *peri_id = pch->chan.private;
 	struct dma_pl330_desc *desc;
 
 	/* Pluck one desc from the pool of DMAC */
-	desc = pluck_desc(pdmac);
+	desc = pluck_desc(pl330);
 
 	/* If the DMAC pool is empty, alloc new */
 	if (!desc) {
-		if (!add_desc(pdmac, GFP_ATOMIC, 1))
+		if (!add_desc(pl330, GFP_ATOMIC, 1))
 			return NULL;
 
 		/* Try again */
-		desc = pluck_desc(pdmac);
+		desc = pluck_desc(pl330);
 		if (!desc) {
-			dev_err(pch->dmac->pif.dev,
+			dev_err(pch->dmac->ddma.dev,
 				"%s:%d ALERT!\n", __func__, __LINE__);
 			return NULL;
 		}
@@ -2463,7 +2385,7 @@ static struct dma_pl330_desc *pl330_get_desc(struct dma_pl330_chan *pch)
 	async_tx_ack(&desc->txd);
 
 	desc->req.peri = peri_id ? pch->chan.chan_id : 0;
-	desc->rqcfg.pcfg = &pch->dmac->pif.pcfg;
+	desc->rqcfg.pcfg = &pch->dmac->pcfg;
 
 	dma_async_tx_descriptor_init(&desc->txd, &pch->chan);
 
@@ -2485,7 +2407,7 @@ __pl330_prep_dma_memcpy(struct dma_pl330_chan *pch, dma_addr_t dst,
 	struct dma_pl330_desc *desc = pl330_get_desc(pch);
 
 	if (!desc) {
-		dev_err(pch->dmac->pif.dev, "%s:%d Unable to fetch desc\n",
+		dev_err(pch->dmac->ddma.dev, "%s:%d Unable to fetch desc\n",
 			__func__, __LINE__);
 		return NULL;
 	}
@@ -2509,11 +2431,11 @@ __pl330_prep_dma_memcpy(struct dma_pl330_chan *pch, dma_addr_t dst,
 static inline int get_burst_len(struct dma_pl330_desc *desc, size_t len)
 {
 	struct dma_pl330_chan *pch = desc->pchan;
-	struct pl330_info *pi = &pch->dmac->pif;
+	struct pl330_dmac *pl330 = pch->dmac;
 	int burst_len;
 
-	burst_len = pi->pcfg.data_bus_width / 8;
-	burst_len *= pi->pcfg.data_buf_dep;
+	burst_len = pl330->pcfg.data_bus_width / 8;
+	burst_len *= pl330->pcfg.data_buf_dep;
 	burst_len >>= desc->rqcfg.brst_size;
 
 	/* src/dst_burst_len can't be more than 16 */
@@ -2536,7 +2458,7 @@ static struct dma_async_tx_descriptor *pl330_prep_dma_cyclic(
 {
 	struct dma_pl330_desc *desc = NULL, *first = NULL;
 	struct dma_pl330_chan *pch = to_pchan(chan);
-	struct dma_pl330_dmac *pdmac = pch->dmac;
+	struct pl330_dmac *pl330 = pch->dmac;
 	unsigned int i;
 	dma_addr_t dst;
 	dma_addr_t src;
@@ -2545,7 +2467,7 @@ static struct dma_async_tx_descriptor *pl330_prep_dma_cyclic(
 		return NULL;
 
 	if (!is_slave_direction(direction)) {
-		dev_err(pch->dmac->pif.dev, "%s:%d Invalid dma direction\n",
+		dev_err(pch->dmac->ddma.dev, "%s:%d Invalid dma direction\n",
 		__func__, __LINE__);
 		return NULL;
 	}
@@ -2553,23 +2475,23 @@ static struct dma_async_tx_descriptor *pl330_prep_dma_cyclic(
 	for (i = 0; i < len / period_len; i++) {
 		desc = pl330_get_desc(pch);
 		if (!desc) {
-			dev_err(pch->dmac->pif.dev, "%s:%d Unable to fetch desc\n",
+			dev_err(pch->dmac->ddma.dev, "%s:%d Unable to fetch desc\n",
 				__func__, __LINE__);
 
 			if (!first)
 				return NULL;
 
-			spin_lock_irqsave(&pdmac->pool_lock, flags);
+			spin_lock_irqsave(&pl330->pool_lock, flags);
 
 			while (!list_empty(&first->node)) {
 				desc = list_entry(first->node.next,
 						struct dma_pl330_desc, node);
-				list_move_tail(&desc->node, &pdmac->desc_pool);
+				list_move_tail(&desc->node, &pl330->desc_pool);
 			}
 
-			list_move_tail(&first->node, &pdmac->desc_pool);
+			list_move_tail(&first->node, &pl330->desc_pool);
 
-			spin_unlock_irqrestore(&pdmac->pool_lock, flags);
+			spin_unlock_irqrestore(&pl330->pool_lock, flags);
 
 			return NULL;
 		}
@@ -2619,14 +2541,12 @@ pl330_prep_dma_memcpy(struct dma_chan *chan, dma_addr_t dst,
 {
 	struct dma_pl330_desc *desc;
 	struct dma_pl330_chan *pch = to_pchan(chan);
-	struct pl330_info *pi;
+	struct pl330_dmac *pl330 = pch->dmac;
 	int burst;
 
 	if (unlikely(!pch || !len))
 		return NULL;
 
-	pi = &pch->dmac->pif;
-
 	desc = __pl330_prep_dma_memcpy(pch, dst, src, len);
 	if (!desc)
 		return NULL;
@@ -2636,7 +2556,7 @@ pl330_prep_dma_memcpy(struct dma_chan *chan, dma_addr_t dst,
 	desc->req.rqtype = DMA_MEM_TO_MEM;
 
 	/* Select max possible burst size */
-	burst = pi->pcfg.data_bus_width / 8;
+	burst = pl330->pcfg.data_bus_width / 8;
 
 	while (burst > 1) {
 		if (!(len % burst))
@@ -2655,7 +2575,7 @@ pl330_prep_dma_memcpy(struct dma_chan *chan, dma_addr_t dst,
 	return &desc->txd;
 }
 
-static void __pl330_giveback_desc(struct dma_pl330_dmac *pdmac,
+static void __pl330_giveback_desc(struct pl330_dmac *pl330,
 				  struct dma_pl330_desc *first)
 {
 	unsigned long flags;
@@ -2664,17 +2584,17 @@ static void __pl330_giveback_desc(struct dma_pl330_dmac *pdmac,
 	if (!first)
 		return;
 
-	spin_lock_irqsave(&pdmac->pool_lock, flags);
+	spin_lock_irqsave(&pl330->pool_lock, flags);
 
 	while (!list_empty(&first->node)) {
 		desc = list_entry(first->node.next,
 				struct dma_pl330_desc, node);
-		list_move_tail(&desc->node, &pdmac->desc_pool);
+		list_move_tail(&desc->node, &pl330->desc_pool);
 	}
 
-	list_move_tail(&first->node, &pdmac->desc_pool);
+	list_move_tail(&first->node, &pl330->desc_pool);
 
-	spin_unlock_irqrestore(&pdmac->pool_lock, flags);
+	spin_unlock_irqrestore(&pl330->pool_lock, flags);
 }
 
 static struct dma_async_tx_descriptor *
@@ -2699,12 +2619,12 @@ pl330_prep_slave_sg(struct dma_chan *chan, struct scatterlist *sgl,
 
 		desc = pl330_get_desc(pch);
 		if (!desc) {
-			struct dma_pl330_dmac *pdmac = pch->dmac;
+			struct pl330_dmac *pl330 = pch->dmac;
 
-			dev_err(pch->dmac->pif.dev,
+			dev_err(pch->dmac->ddma.dev,
 				"%s:%d Unable to fetch desc\n",
 				__func__, __LINE__);
-			__pl330_giveback_desc(pdmac, first);
+			__pl330_giveback_desc(pl330, first);
 
 			return NULL;
 		}
@@ -2768,9 +2688,9 @@ static int
 pl330_probe(struct amba_device *adev, const struct amba_id *id)
 {
 	struct dma_pl330_platdata *pdat;
-	struct dma_pl330_dmac *pdmac;
+	struct pl330_config *pcfg;
+	struct pl330_dmac *pl330;
 	struct dma_pl330_chan *pch, *_p;
-	struct pl330_info *pi;
 	struct dma_device *pd;
 	struct resource *res;
 	int i, ret, irq;
@@ -2783,30 +2703,27 @@ pl330_probe(struct amba_device *adev, const struct amba_id *id)
 		return ret;
 
 	/* Allocate a new DMAC and its Channels */
-	pdmac = devm_kzalloc(&adev->dev, sizeof(*pdmac), GFP_KERNEL);
-	if (!pdmac) {
+	pl330 = devm_kzalloc(&adev->dev, sizeof(*pl330), GFP_KERNEL);
+	if (!pl330) {
 		dev_err(&adev->dev, "unable to allocate mem\n");
 		return -ENOMEM;
 	}
 
-	pi = &pdmac->pif;
-	pi->dev = &adev->dev;
-	pi->pl330_data = NULL;
-	pi->mcbufsz = pdat ? pdat->mcbuf_sz : 0;
+	pl330->mcbufsz = pdat ? pdat->mcbuf_sz : 0;
 
 	res = &adev->res;
-	pi->base = devm_ioremap_resource(&adev->dev, res);
-	if (IS_ERR(pi->base))
-		return PTR_ERR(pi->base);
+	pl330->base = devm_ioremap_resource(&adev->dev, res);
+	if (IS_ERR(pl330->base))
+		return PTR_ERR(pl330->base);
 
-	amba_set_drvdata(adev, pdmac);
+	amba_set_drvdata(adev, pl330);
 
 	for (i = 0; i < AMBA_NR_IRQS; i++) {
 		irq = adev->irq[i];
 		if (irq) {
 			ret = devm_request_irq(&adev->dev, irq,
 					       pl330_irq_handler, 0,
-					       dev_name(&adev->dev), pi);
+					       dev_name(&adev->dev), pl330);
 			if (ret)
 				return ret;
 		} else {
@@ -2814,38 +2731,40 @@ pl330_probe(struct amba_device *adev, const struct amba_id *id)
 		}
 	}
 
-	pi->pcfg.periph_id = adev->periphid;
-	ret = pl330_add(pi);
+	pcfg = &pl330->pcfg;
+
+	pcfg->periph_id = adev->periphid;
+	ret = pl330_add(pl330);
 	if (ret)
 		return ret;
 
-	INIT_LIST_HEAD(&pdmac->desc_pool);
-	spin_lock_init(&pdmac->pool_lock);
+	INIT_LIST_HEAD(&pl330->desc_pool);
+	spin_lock_init(&pl330->pool_lock);
 
 	/* Create a descriptor pool of default size */
-	if (!add_desc(pdmac, GFP_KERNEL, NR_DEFAULT_DESC))
+	if (!add_desc(pl330, GFP_KERNEL, NR_DEFAULT_DESC))
 		dev_warn(&adev->dev, "unable to allocate desc\n");
 
-	pd = &pdmac->ddma;
+	pd = &pl330->ddma;
 	INIT_LIST_HEAD(&pd->channels);
 
 	/* Initialize channel parameters */
 	if (pdat)
-		num_chan = max_t(int, pdat->nr_valid_peri, pi->pcfg.num_chan);
+		num_chan = max_t(int, pdat->nr_valid_peri, pcfg->num_chan);
 	else
-		num_chan = max_t(int, pi->pcfg.num_peri, pi->pcfg.num_chan);
+		num_chan = max_t(int, pcfg->num_peri, pcfg->num_chan);
 
-	pdmac->num_peripherals = num_chan;
+	pl330->num_peripherals = num_chan;
 
-	pdmac->peripherals = kzalloc(num_chan * sizeof(*pch), GFP_KERNEL);
-	if (!pdmac->peripherals) {
+	pl330->peripherals = kzalloc(num_chan * sizeof(*pch), GFP_KERNEL);
+	if (!pl330->peripherals) {
 		ret = -ENOMEM;
-		dev_err(&adev->dev, "unable to allocate pdmac->peripherals\n");
+		dev_err(&adev->dev, "unable to allocate pl330->peripherals\n");
 		goto probe_err2;
 	}
 
 	for (i = 0; i < num_chan; i++) {
-		pch = &pdmac->peripherals[i];
+		pch = &pl330->peripherals[i];
 		if (!adev->dev.of_node)
 			pch->chan.private = pdat ? &pdat->peri_id[i] : NULL;
 		else
@@ -2857,7 +2776,7 @@ pl330_probe(struct amba_device *adev, const struct amba_id *id)
 		spin_lock_init(&pch->lock);
 		pch->thread = NULL;
 		pch->chan.device = pd;
-		pch->dmac = pdmac;
+		pch->dmac = pl330;
 
 		/* Add the channel to the DMAC list */
 		list_add_tail(&pch->chan.device_node, &pd->channels);
@@ -2868,7 +2787,7 @@ pl330_probe(struct amba_device *adev, const struct amba_id *id)
 		pd->cap_mask = pdat->cap_mask;
 	} else {
 		dma_cap_set(DMA_MEMCPY, pd->cap_mask);
-		if (pi->pcfg.num_peri) {
+		if (pcfg->num_peri) {
 			dma_cap_set(DMA_SLAVE, pd->cap_mask);
 			dma_cap_set(DMA_CYCLIC, pd->cap_mask);
 			dma_cap_set(DMA_PRIVATE, pd->cap_mask);
@@ -2893,14 +2812,14 @@ pl330_probe(struct amba_device *adev, const struct amba_id *id)
 
 	if (adev->dev.of_node) {
 		ret = of_dma_controller_register(adev->dev.of_node,
-					 of_dma_pl330_xlate, pdmac);
+					 of_dma_pl330_xlate, pl330);
 		if (ret) {
 			dev_err(&adev->dev,
 			"unable to register DMA to the generic DT DMA helpers\n");
 		}
 	}
 
-	adev->dev.dma_parms = &pdmac->dma_parms;
+	adev->dev.dma_parms = &pl330->dma_parms;
 
 	/*
 	 * This is the limit for transfers with a buswidth of 1, larger
@@ -2915,14 +2834,13 @@ pl330_probe(struct amba_device *adev, const struct amba_id *id)
 		"Loaded driver for PL330 DMAC-%d\n", adev->periphid);
 	dev_info(&adev->dev,
 		"\tDBUFF-%ux%ubytes Num_Chans-%u Num_Peri-%u Num_Events-%u\n",
-		pi->pcfg.data_buf_dep,
-		pi->pcfg.data_bus_width / 8, pi->pcfg.num_chan,
-		pi->pcfg.num_peri, pi->pcfg.num_events);
+		pcfg->data_buf_dep, pcfg->data_bus_width / 8, pcfg->num_chan,
+		pcfg->num_peri, pcfg->num_events);
 
 	return 0;
 probe_err3:
 	/* Idle the DMAC */
-	list_for_each_entry_safe(pch, _p, &pdmac->ddma.channels,
+	list_for_each_entry_safe(pch, _p, &pl330->ddma.channels,
 			chan.device_node) {
 
 		/* Remove the channel */
@@ -2933,27 +2851,23 @@ pl330_probe(struct amba_device *adev, const struct amba_id *id)
 		pl330_free_chan_resources(&pch->chan);
 	}
 probe_err2:
-	pl330_del(pi);
+	pl330_del(pl330);
 
 	return ret;
 }
 
 static int pl330_remove(struct amba_device *adev)
 {
-	struct dma_pl330_dmac *pdmac = amba_get_drvdata(adev);
+	struct pl330_dmac *pl330 = amba_get_drvdata(adev);
 	struct dma_pl330_chan *pch, *_p;
-	struct pl330_info *pi;
-
-	if (!pdmac)
-		return 0;
 
 	if (adev->dev.of_node)
 		of_dma_controller_free(adev->dev.of_node);
 
-	dma_async_device_unregister(&pdmac->ddma);
+	dma_async_device_unregister(&pl330->ddma);
 
 	/* Idle the DMAC */
-	list_for_each_entry_safe(pch, _p, &pdmac->ddma.channels,
+	list_for_each_entry_safe(pch, _p, &pl330->ddma.channels,
 			chan.device_node) {
 
 		/* Remove the channel */
@@ -2964,9 +2878,7 @@ static int pl330_remove(struct amba_device *adev)
 		pl330_free_chan_resources(&pch->chan);
 	}
 
-	pi = &pdmac->pif;
-
-	pl330_del(pi);
+	pl330_del(pl330);
 
 	return 0;
 }