[PATCH] STAGING/EMXX_UDC: emxx_udc.c: Fixed all meaningful sparse errors: 1. Added static to udc_controller 2. Added mising __iomem modifier to handle p_regs 3. Added missing le16_to_cpu

From: Carmeli Tamir
Date: Fri Oct 05 2018 - 14:27:36 EST

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Next in thread: Gustavo A. R. Silva: "Re: [PATCH] STAGING/EMXX_UDC: emxx_udc.c: Fixed all meaningful sparse errors: 1. Added static to udc_controller 2. Added mising __iomem modifier to handle p_regs 3. Added missing le16_to_cpu"
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Signed-off-by: Tamir Carmeli <carmeli.tamir@xxxxxxxxx>
---
drivers/staging/emxx_udc/Makefile | 2 +-
drivers/staging/emxx_udc/emxx_udc.c | 69 +++++++++++++++++++------------------
drivers/staging/emxx_udc/emxx_udc.h | 2 +-
3 files changed, 38 insertions(+), 35 deletions(-)

diff --git a/drivers/staging/emxx_udc/emxx_udc.c b/drivers/staging/emxx_udc/emxx_udc.c
index 3e51476..83eb430 100644
--- a/drivers/staging/emxx_udc/emxx_udc.c
+++ b/drivers/staging/emxx_udc/emxx_udc.c
@@ -56,25 +56,25 @@ static void _nbu2ss_fifo_flush(struct nbu2ss_udc *, struct nbu2ss_ep *);

/*===========================================================================*/
/* Global */
-struct nbu2ss_udc udc_controller;
+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);

@@ -135,6 +135,7 @@ static void _nbu2ss_ep0_complete(struct usb_ep *_ep, struct usb_request *_req)
{
u8 recipient;
u16 selector;
+ u16 wIndex;
u32 test_mode;
struct usb_ctrlrequest *p_ctrl;
struct nbu2ss_udc *udc;
@@ -149,10 +150,11 @@ static void _nbu2ss_ep0_complete(struct usb_ep *_ep, struct usb_request *_req)
/*-------------------------------------------------*/
/* SET_FEATURE */
recipient = (u8)(p_ctrl->bRequestType & USB_RECIP_MASK);
- selector = p_ctrl->wValue;
+ selector = le16_to_cpu(p_ctrl->wValue);
if ((recipient == USB_RECIP_DEVICE) &&
(selector == USB_DEVICE_TEST_MODE)) {
- test_mode = (u32)(p_ctrl->wIndex >> 8);
+ wIndex = le16_to_cpu(p_ctrl->wIndex);
+ test_mode = (u32)(wIndex >> 8);
_nbu2ss_set_test_mode(udc, test_mode);
}
}
@@ -184,7 +186,7 @@ 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 +379,7 @@ 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 +410,7 @@ 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 +428,7 @@ 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 +819,7 @@ 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 +882,7 @@ 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 +966,7 @@ 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 +1028,7 @@ 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 +1103,7 @@ 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 +1319,7 @@ 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) {
@@ -1380,7 +1382,7 @@ static struct usb_device_descriptor device_desc = {
.bMaxPacketSize0 = 64,
.idVendor = cpu_to_le16(0x0409),
.idProduct = cpu_to_le16(0xfff0),
- .bcdDevice = 0xffff,
+ .bcdDevice = cpu_to_le16(0xffff),
.iManufacturer = 0x00,
.iProduct = 0x00,
.iSerialNumber = 0x00,
@@ -1440,7 +1442,7 @@ 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) {
@@ -1468,8 +1470,8 @@ static inline int _nbu2ss_req_feature(struct nbu2ss_udc *udc, bool bset)
{
u8 recipient = (u8)(udc->ctrl.bRequestType & USB_RECIP_MASK);
u8 direction = (u8)(udc->ctrl.bRequestType & USB_DIR_IN);
- u16 selector = udc->ctrl.wValue;
- u16 wIndex = udc->ctrl.wIndex;
+ u16 selector = le16_to_cpu(udc->ctrl.wValue);
+ u16 wIndex = le16_to_cpu(udc->ctrl.wIndex);
u8 ep_adrs;
int result = -EOPNOTSUPP;

@@ -1535,7 +1537,7 @@ 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
@@ -1568,7 +1570,8 @@ static int std_req_get_status(struct nbu2ss_udc *udc)
if ((udc->ctrl.wValue != 0x0000) || (direction != USB_DIR_IN))
return result;

- length = min_t(u16, udc->ctrl.wLength, sizeof(status_data));
+ length =
+ min_t(u16, le16_to_cpu(udc->ctrl.wLength), sizeof(status_data));

switch (recipient) {
case USB_RECIP_DEVICE:
@@ -1584,8 +1587,8 @@ static int std_req_get_status(struct nbu2ss_udc *udc)
break;

case USB_RECIP_ENDPOINT:
- if (0x0000 == (udc->ctrl.wIndex & 0xFF70)) {
- ep_adrs = (u8)(udc->ctrl.wIndex & 0xFF);
+ if (0x0000 == (le16_to_cpu(udc->ctrl.wIndex) & 0xFF70)) {
+ ep_adrs = (u8)(le16_to_cpu(udc->ctrl.wIndex) & 0xFF);
result = _nbu2ss_get_ep_stall(udc, ep_adrs);

if (result > 0)
@@ -1625,7 +1628,7 @@ static int std_req_set_feature(struct nbu2ss_udc *udc)
static int std_req_set_address(struct nbu2ss_udc *udc)
{
int result = 0;
- u32 wValue = udc->ctrl.wValue;
+ u32 wValue = le16_to_cpu(udc->ctrl.wValue);

if ((udc->ctrl.bRequestType != 0x00) ||
(udc->ctrl.wIndex != 0x0000) ||
@@ -1647,7 +1650,7 @@ static int std_req_set_address(struct nbu2ss_udc *udc)
/*-------------------------------------------------------------------------*/
static int std_req_set_configuration(struct nbu2ss_udc *udc)
{
- u32 config_value = (u32)(udc->ctrl.wValue & 0x00ff);
+ u32 config_value = (u32)(le16_to_cpu(udc->ctrl.wValue) & 0x00ff);

if ((udc->ctrl.wIndex != 0x0000) ||
(udc->ctrl.wLength != 0x0000) ||
@@ -1943,7 +1946,7 @@ 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 +2041,7 @@ 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 +2217,7 @@ 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 +2435,7 @@ 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 +2834,7 @@ 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 +3219,7 @@ 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

Next message: Jason A. Donenfeld: "Re: [RFC PATCH 1/9] kernel: add support for patchable function pointers"
Previous message: Alan Jenkins: "Re: [PATCH 03/34] teach move_mount(2) to work with OPEN_TREE_CLONE [ver #12]"
Next in thread: Gustavo A. R. Silva: "Re: [PATCH] STAGING/EMXX_UDC: emxx_udc.c: Fixed all meaningful sparse errors: 1. Added static to udc_controller 2. Added mising __iomem modifier to handle p_regs 3. Added missing le16_to_cpu"
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