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From:   Carmeli Tamir <carmeli.tamir@gmail.com>
To:     gregkh@linuxfoundation.org, dan.carpenter@oracle.com,
        chrisadr@gentoo.org
Cc:     carmeli.tamir@gmail.com, devel@driverdev.osuosl.org,
        linux-kernel@vger.kernel.org
Subject: [PATCH 2/3] staging: emxx_udc: Added missing __iomem modifier to handle p_regs
Date:   Wed, 17 Oct 2018 17:02:06 -0400
Message-Id: <1539810126-11873-1-git-send-email-carmeli.tamir@gmail.com>
Sender: linux-kernel-owner@vger.kernel.org
Precedence: bulk

Since in nbu2ss_drv_probe() p_regs is assigned from mmio_base, which is 
marked as __iomem, p_regs also should be market with __iomem.

Signed-off-by: Carmeli Tamir <carmeli.tamir@gmail.com>
---
 drivers/staging/emxx_udc/emxx_udc.c | 44 ++++++++++++++++++-------------------
 drivers/staging/emxx_udc/emxx_udc.h |  2 +-
 2 files changed, 23 insertions(+), 23 deletions(-)

diff --git a/drivers/staging/emxx_udc/emxx_udc.c b/drivers/staging/emxx_udc/emxx_udc.c
index 94a4327..344fe80 100644
--- a/drivers/staging/emxx_udc/emxx_udc.c
+++ b/drivers/staging/emxx_udc/emxx_udc.c
@@ -60,21 +60,21 @@ static struct nbu2ss_udc udc_controller;
 
 /*-------------------------------------------------------------------------*/
 /* Read */
-static inline u32 _nbu2ss_readl(void *address)
+static inline u32 _nbu2ss_readl(void __iomem *address)
 {
 	return __raw_readl(address);
 }
 
 /*-------------------------------------------------------------------------*/
 /* Write */
-static inline void _nbu2ss_writel(void *address, u32 udata)
+static inline void _nbu2ss_writel(void __iomem *address, u32 udata)
 {
 	__raw_writel(udata, address);
 }
 
 /*-------------------------------------------------------------------------*/
 /* Set Bit */
-static inline void _nbu2ss_bitset(void *address, u32 udata)
+static inline void _nbu2ss_bitset(void __iomem *address, u32 udata)
 {
 	u32	reg_dt = __raw_readl(address) | (udata);
 
@@ -83,7 +83,7 @@ static inline void _nbu2ss_bitset(void *address, u32 udata)
 
 /*-------------------------------------------------------------------------*/
 /* Clear Bit */
-static inline void _nbu2ss_bitclr(void *address, u32 udata)
+static inline void _nbu2ss_bitclr(void __iomem *address, u32 udata)
 {
 	u32	reg_dt = __raw_readl(address) & ~(udata);
 
@@ -184,7 +184,7 @@ static u32 _nbu2ss_get_begin_ram_address(struct nbu2ss_udc *udc)
 	u32		num, buf_type;
 	u32		data, last_ram_adr, use_ram_size;
 
-	struct ep_regs *p_ep_regs;
+	struct ep_regs __iomem *p_ep_regs;
 
 	last_ram_adr = (D_RAM_SIZE_CTRL / sizeof(u32)) * 2;
 	use_ram_size = 0;
@@ -377,7 +377,7 @@ static void _nbu2ss_ep_dma_exit(struct nbu2ss_udc *udc, struct nbu2ss_ep *ep)
 {
 	u32		num;
 	u32		data;
-	struct fc_regs	*preg = udc->p_regs;
+	struct fc_regs __iomem *preg = udc->p_regs;
 
 	if (udc->vbus_active == 0)
 		return;		/* VBUS OFF */
@@ -408,7 +408,7 @@ static void _nbu2ss_ep_dma_exit(struct nbu2ss_udc *udc, struct nbu2ss_ep *ep)
 /* Abort DMA */
 static void _nbu2ss_ep_dma_abort(struct nbu2ss_udc *udc, struct nbu2ss_ep *ep)
 {
-	struct fc_regs	*preg = udc->p_regs;
+	struct fc_regs __iomem *preg = udc->p_regs;
 
 	_nbu2ss_bitclr(&preg->EP_DCR[ep->epnum - 1].EP_DCR1, DCR1_EPN_REQEN);
 	mdelay(DMA_DISABLE_TIME);	/* DCR1_EPN_REQEN Clear */
@@ -426,7 +426,7 @@ static void _nbu2ss_ep_in_end(
 {
 	u32		data;
 	u32		num;
-	struct fc_regs	*preg = udc->p_regs;
+	struct fc_regs __iomem *preg = udc->p_regs;
 
 	if (length >= sizeof(u32))
 		return;
@@ -817,7 +817,7 @@ static int _nbu2ss_out_dma(
 	u32		burst = 1;
 	u32		data;
 	int		result = -EINVAL;
-	struct fc_regs	*preg = udc->p_regs;
+	struct fc_regs __iomem *preg = udc->p_regs;
 
 	if (req->dma_flag)
 		return 1;		/* DMA is forwarded */
@@ -880,7 +880,7 @@ static int _nbu2ss_epn_out_pio(
 	union usb_reg_access	temp_32;
 	union usb_reg_access	*p_buf_32;
 	int		result = 0;
-	struct fc_regs	*preg = udc->p_regs;
+	struct fc_regs __iomem *preg = udc->p_regs;
 
 	if (req->dma_flag)
 		return 1;		/* DMA is forwarded */
@@ -964,7 +964,7 @@ static int _nbu2ss_epn_out_transfer(
 	u32		num;
 	u32		i_recv_length;
 	int		result = 1;
-	struct fc_regs	*preg = udc->p_regs;
+	struct fc_regs __iomem *preg = udc->p_regs;
 
 	if (ep->epnum == 0)
 		return -EINVAL;
@@ -1026,7 +1026,7 @@ static int _nbu2ss_in_dma(
 	u32		i_write_length;
 	u32		data;
 	int		result = -EINVAL;
-	struct fc_regs	*preg = udc->p_regs;
+	struct fc_regs __iomem *preg = udc->p_regs;
 
 	if (req->dma_flag)
 		return 1;		/* DMA is forwarded */
@@ -1101,7 +1101,7 @@ static int _nbu2ss_epn_in_pio(
 	union usb_reg_access	temp_32;
 	union usb_reg_access	*p_buf_32 = NULL;
 	int		result = 0;
-	struct fc_regs	*preg = udc->p_regs;
+	struct fc_regs __iomem *preg = udc->p_regs;
 
 	if (req->dma_flag)
 		return 1;		/* DMA is forwarded */
@@ -1317,7 +1317,7 @@ static void _nbu2ss_set_endpoint_stall(
 	u8		num, epnum;
 	u32		data;
 	struct nbu2ss_ep *ep;
-	struct fc_regs	*preg = udc->p_regs;
+	struct fc_regs __iomem *preg = udc->p_regs;
 
 	if ((ep_adrs == 0) || (ep_adrs == 0x80)) {
 		if (bstall) {
@@ -1440,7 +1440,7 @@ static int _nbu2ss_get_ep_stall(struct nbu2ss_udc *udc, u8 ep_adrs)
 {
 	u8		epnum;
 	u32		data = 0, bit_data;
-	struct fc_regs	*preg = udc->p_regs;
+	struct fc_regs __iomem *preg = udc->p_regs;
 
 	epnum = ep_adrs & ~USB_ENDPOINT_DIR_MASK;
 	if (epnum == 0) {
@@ -1535,7 +1535,7 @@ static void _nbu2ss_epn_set_stall(
 	u32	regdata;
 	int	limit_cnt = 0;
 
-	struct fc_regs	*preg = udc->p_regs;
+	struct fc_regs __iomem *preg = udc->p_regs;
 
 	if (ep->direct == USB_DIR_IN) {
 		for (limit_cnt = 0
@@ -1943,7 +1943,7 @@ static inline void _nbu2ss_epn_in_int(
 	int	result = 0;
 	u32	status;
 
-	struct fc_regs	*preg = udc->p_regs;
+	struct fc_regs __iomem *preg = udc->p_regs;
 
 	if (req->dma_flag)
 		return;		/* DMA is forwarded */
@@ -2038,7 +2038,7 @@ static inline void _nbu2ss_epn_out_dma_int(
 	u32		num;
 	u32		dmacnt, ep_dmacnt;
 	u32		mpkt;
-	struct fc_regs	*preg = udc->p_regs;
+	struct fc_regs __iomem *preg = udc->p_regs;
 
 	num = ep->epnum - 1;
 
@@ -2214,7 +2214,7 @@ static int _nbu2ss_pullup(struct nbu2ss_udc *udc, int is_on)
 /*-------------------------------------------------------------------------*/
 static void _nbu2ss_fifo_flush(struct nbu2ss_udc *udc, struct nbu2ss_ep *ep)
 {
-	struct fc_regs	*p = udc->p_regs;
+	struct fc_regs __iomem *p = udc->p_regs;
 
 	if (udc->vbus_active == 0)
 		return;
@@ -2432,7 +2432,7 @@ static irqreturn_t _nbu2ss_udc_irq(int irq, void *_udc)
 	u32	epnum, int_bit;
 
 	struct nbu2ss_udc	*udc = (struct nbu2ss_udc *)_udc;
-	struct fc_regs	*preg = udc->p_regs;
+	struct fc_regs __iomem *preg = udc->p_regs;
 
 	if (gpio_get_value(VBUS_VALUE) == 0) {
 		_nbu2ss_writel(&preg->USB_INT_STA, ~USB_INT_STA_RW);
@@ -2831,7 +2831,7 @@ static int nbu2ss_ep_fifo_status(struct usb_ep *_ep)
 	struct nbu2ss_ep	*ep;
 	struct nbu2ss_udc	*udc;
 	unsigned long		flags;
-	struct fc_regs		*preg;
+	struct fc_regs	__iomem *preg;
 
 	if (!_ep) {
 		pr_err("%s, bad param\n", __func__);
@@ -3216,7 +3216,7 @@ static int nbu2ss_drv_probe(struct platform_device *pdev)
 				  0, driver_name, udc);
 
 	/* IO Memory */
-	udc->p_regs = (struct fc_regs *)mmio_base;
+	udc->p_regs = (struct fc_regs __iomem *)mmio_base;
 
 	/* USB Function Controller Interrupt */
 	if (status != 0) {
diff --git a/drivers/staging/emxx_udc/emxx_udc.h b/drivers/staging/emxx_udc/emxx_udc.h
index 8337e38c..e28a74d 100644
--- a/drivers/staging/emxx_udc/emxx_udc.h
+++ b/drivers/staging/emxx_udc/emxx_udc.h
@@ -582,7 +582,7 @@ struct nbu2ss_udc {
 
 	u32		curr_config;	/* Current Configuration Number */
 
-	struct fc_regs		*p_regs;
+	struct fc_regs __iomem *p_regs;
 };
 
 /* USB register access structure */
-- 
2.7.4