[PATCH v4 0/6] Staging: emxx_udc: Fix checkpatch.pl warnings

[PATCH v4 0/6] Staging: emxx_udc: Fix checkpatch.pl warnings

[Haneen Mohammed]

This patchset fixes the following coding style issues found by checkpatch.pl:
Do not add new typedefs.
Use of volatile is usually wrong.
printk not prefered.

Changes in v4:
 - Patchset broken into smaller patches
Changes in v3:
 - create patchset from two patches
Changes in v2:
 - First patch reversion

Haneen Mohammed (6):
  Staging: emxx_udc: Fix do not add new typedefs
  Staging: emxx_udc: Remove volatile from union usb_regs_access
  Staging: emxx_udc: Replace custom printk micro ERR with pr_err
  Staging: emxx_udc: Replace custom printk micro ERR with dev_err
  Staging: emxx_udc: Remove custom printk micro ERR
  Staging: emxx_udc: Clean dev_err() logging

 drivers/staging/emxx_udc/emxx_udc.c | 140 ++++++++++++++++++------------------
 drivers/staging/emxx_udc/emxx_udc.h |  27 ++++---
 2 files changed, 83 insertions(+), 84 deletions(-)

-- 
1.9.1

[PATCH v4 2/6] Staging: emxx_udc: Remove volatile from union usb_regs_access

[Haneen Mohammed]

This patch removes volatile from union usb_regs_access, to fix checkpatch.pl
warning:
WARNING: Use of volatile is usually wrong

Signed-off-by: Haneen Mohammed <hamohammed.sa@gmail.com>
---
 drivers/staging/emxx_udc/emxx_udc.c | 24 ++++++++++++------------
 drivers/staging/emxx_udc/emxx_udc.h |  2 +-
 2 files changed, 13 insertions(+), 13 deletions(-)

diff --git a/drivers/staging/emxx_udc/emxx_udc.c b/drivers/staging/emxx_udc/emxx_udc.c
index e33ccc4..c9f5e5d 100644
--- a/drivers/staging/emxx_udc/emxx_udc.c
+++ b/drivers/staging/emxx_udc/emxx_udc.c
@@ -567,7 +567,7 @@ static int EP0_out_PIO(struct nbu2ss_udc *udc, u8 *pBuf, u32 length)
 	u32		i;
 	int		nret   = 0;
 	u32		iWordLength = 0;
-	volatile union usb_reg_access *pBuf32 = (volatile union usb_reg_access *)pBuf;
+	union usb_reg_access *pBuf32 = (union usb_reg_access *)pBuf;
 
 	/*------------------------------------------------------------*/
 	/* Read Length */
@@ -592,8 +592,8 @@ static int EP0_out_OverBytes(struct nbu2ss_udc *udc, u8 *pBuf, u32 length)
 {
 	u32		i;
 	u32		iReadSize = 0;
-	volatile union usb_reg_access  Temp32;
-	volatile union usb_reg_access  *pBuf32 = (volatile union usb_reg_access *)pBuf;
+	union usb_reg_access  Temp32;
+	union usb_reg_access  *pBuf32 = (union usb_reg_access *)pBuf;
 
 	if ((0 < length) && (length < sizeof(u32))) {
 		Temp32.dw = _nbu2ss_readl(&udc->p_regs->EP0_READ);
@@ -613,7 +613,7 @@ static int EP0_in_PIO(struct nbu2ss_udc *udc, u8 *pBuf, u32 length)
 	u32		iMaxLength   = EP0_PACKETSIZE;
 	u32		iWordLength  = 0;
 	u32		iWriteLength = 0;
-	volatile union usb_reg_access  *pBuf32 = (volatile union usb_reg_access *)pBuf;
+	union usb_reg_access  *pBuf32 = (union usb_reg_access *)pBuf;
 
 	/*------------------------------------------------------------*/
 	/* Transfer Length */
@@ -638,8 +638,8 @@ static int EP0_in_PIO(struct nbu2ss_udc *udc, u8 *pBuf, u32 length)
 static int EP0_in_OverBytes(struct nbu2ss_udc *udc, u8 *pBuf, u32 iRemainSize)
 {
 	u32		i;
-	volatile union usb_reg_access  Temp32;
-	volatile union usb_reg_access  *pBuf32 = (volatile union usb_reg_access *)pBuf;
+	union usb_reg_access  Temp32;
+	union usb_reg_access  *pBuf32 = (union usb_reg_access *)pBuf;
 
 	if ((0 < iRemainSize) && (iRemainSize < sizeof(u32))) {
 		for (i = 0 ; i < iRemainSize ; i++)
@@ -900,8 +900,8 @@ static int _nbu2ss_epn_out_pio(
 	u32		i;
 	u32		data;
 	u32		iWordLength;
-	volatile union usb_reg_access	Temp32;
-	volatile union usb_reg_access	*pBuf32;
+	union usb_reg_access	Temp32;
+	union usb_reg_access	*pBuf32;
 	int		result = 0;
 	struct fc_regs	*preg = udc->p_regs;
 
@@ -912,7 +912,7 @@ static int _nbu2ss_epn_out_pio(
 		return 0;
 
 	pBuffer = (u8 *)req->req.buf;
-	pBuf32 = (volatile union usb_reg_access *)(pBuffer + req->req.actual);
+	pBuf32 = (union usb_reg_access *)(pBuffer + req->req.actual);
 
 	iWordLength = length / sizeof(u32);
 	if (iWordLength > 0) {
@@ -1123,8 +1123,8 @@ static int _nbu2ss_epn_in_pio(
 	u32		i;
 	u32		data;
 	u32		iWordLength;
-	volatile union usb_reg_access	Temp32;
-	volatile union usb_reg_access	*pBuf32 = NULL;
+	union usb_reg_access	Temp32;
+	union usb_reg_access	*pBuf32 = NULL;
 	int		result = 0;
 	struct fc_regs	*preg = udc->p_regs;
 
@@ -1133,7 +1133,7 @@ static int _nbu2ss_epn_in_pio(
 
 	if (length > 0) {
 		pBuffer = (u8 *)req->req.buf;
-		pBuf32 = (volatile union usb_reg_access *)(pBuffer + req->req.actual);
+		pBuf32 = (union usb_reg_access *)(pBuffer + req->req.actual);
 
 		iWordLength = length / sizeof(u32);
 		if (iWordLength > 0) {
diff --git a/drivers/staging/emxx_udc/emxx_udc.h b/drivers/staging/emxx_udc/emxx_udc.h
index c1f98b3..7b2fcb6 100644
--- a/drivers/staging/emxx_udc/emxx_udc.h
+++ b/drivers/staging/emxx_udc/emxx_udc.h
@@ -636,7 +636,7 @@ struct nbu2ss_udc {
 };
 
 /* USB register access structure */
-volatile union usb_reg_access {
+union usb_reg_access {
 	struct {
 		unsigned char	DATA[4];
 	} byte;
-- 
1.9.1

[PATCH v4 3/6] Staging: emxx_udc: Replace custom printk micro ERR with pr_err

[Haneen Mohammed]

This patch removes half custom printk micros ERR and replace it with
pr_err. pr_err used because no appropriate dev variable were found.  Issue addressed by checkpathc.pl.

Signed-off-by: Haneen Mohammed <hamohammed.sa@gmail.com>
---
 drivers/staging/emxx_udc/emxx_udc.c | 56 ++++++++++++++++++-------------------
 1 file changed, 28 insertions(+), 28 deletions(-)

diff --git a/drivers/staging/emxx_udc/emxx_udc.c b/drivers/staging/emxx_udc/emxx_udc.c
index c9f5e5d..f33980c 100644
--- a/drivers/staging/emxx_udc/emxx_udc.c
+++ b/drivers/staging/emxx_udc/emxx_udc.c
@@ -115,7 +115,7 @@ static void _nbu2ss_dump_register(struct nbu2ss_udc *udc)
 	pr_info("=== %s()\n", __func__);
 
 	if (udc == NULL) {
-		ERR("%s udc == NULL\n", __func__);
+		pr_err("udc: %s udc == NULL\n", __func__);
 		return;
 	}
 
@@ -2258,7 +2258,7 @@ static int _nbu2ss_pullup(struct nbu2ss_udc *udc, int is_on)
 	u32	reg_dt;
 
 	if (!udc) {
-		ERR("%s, bad param\n", __func__);
+		pr_err("udc: %s, bad param\n", __func__);
 		return -EINVAL;
 	}
 
@@ -2612,13 +2612,13 @@ static int nbu2ss_ep_enable(
 	struct nbu2ss_udc	*udc;
 
 	if ((_ep == NULL) || (desc == NULL)) {
-		ERR(" *** %s, bad param\n", __func__);
+		pr_err("udc: *** %s, bad param\n", __func__);
 		return -EINVAL;
 	}
 
 	ep = container_of(_ep, struct nbu2ss_ep, ep);
 	if ((ep == NULL) || (ep->udc == NULL)) {
-		ERR(" *** %s, ep == NULL !!\n", __func__);
+		pr_err("udc:  *** %s, ep == NULL !!\n", __func__);
 		return -EINVAL;
 	}
 
@@ -2626,7 +2626,7 @@ static int nbu2ss_ep_enable(
 	if ((ep_type == USB_ENDPOINT_XFER_CONTROL)
 		|| (ep_type == USB_ENDPOINT_XFER_ISOC)) {
 
-		ERR(" *** %s, bat bmAttributes\n", __func__);
+		pr_err("udc:  *** %s, bat bmAttributes\n", __func__);
 		return -EINVAL;
 	}
 
@@ -2672,13 +2672,13 @@ static int nbu2ss_ep_disable(struct usb_ep *_ep)
 	unsigned long		flags;
 
 	if (_ep == NULL) {
-		ERR(" *** %s, bad param\n", __func__);
+		pr_err("udc:  *** %s, bad param\n", __func__);
 		return -EINVAL;
 	}
 
 	ep = container_of(_ep, struct nbu2ss_ep, ep);
 	if ((ep == NULL) || (ep->udc == NULL)) {
-		ERR(" *** %s, ep == NULL !!\n", __func__);
+		pr_err("udc:  *** %s, ep == NULL !!\n", __func__);
 		return -EINVAL;
 	}
 
@@ -2742,10 +2742,10 @@ static int nbu2ss_ep_queue(
 	/* catch various bogus parameters */
 	if ((_ep == NULL) || (_req == NULL)) {
 		if (_ep == NULL)
-			ERR("*** %s --- _ep == NULL\n", __func__);
+			pr_err("udc: *** %s --- _ep == NULL\n", __func__);
 
 		if (_req == NULL)
-			ERR("*** %s --- _req == NULL\n", __func__);
+			pr_err("udc: *** %s --- _req == NULL\n", __func__);
 
 		return -EINVAL;
 	}
@@ -2756,13 +2756,13 @@ static int nbu2ss_ep_queue(
 	     || !list_empty(&req->queue))) {
 
 		if (!_req->complete)
-			ERR("*** %s --- !_req->complete\n", __func__);
+			pr_err("udc: *** %s --- !_req->complete\n", __func__);
 
 		if (!_req->buf)
-			ERR("*** %s --- !_req->buf\n", __func__);
+			pr_err("udc: *** %s --- !_req->buf\n", __func__);
 
 		if (!list_empty(&req->queue))
-			ERR("*** %s --- !list_empty(&req->queue)\n", __func__);
+			pr_err("udc: *** %s --- !list_empty(&req->queue)\n", __func__);
 
 		return -EINVAL;
 	}
@@ -2849,13 +2849,13 @@ static int nbu2ss_ep_dequeue(
 
 	/* catch various bogus parameters */
 	if ((_ep == NULL) || (_req == NULL)) {
-		/* ERR("%s, bad param(1)\n", __func__); */
+		/* pr_err("udc: %s, bad param(1)\n", __func__); */
 		return -EINVAL;
 	}
 
 	ep = container_of(_ep, struct nbu2ss_ep, ep);
 	if (!ep) {
-		ERR("%s, ep == NULL !!\n", __func__);
+		pr_err("udc: %s, ep == NULL !!\n", __func__);
 		return -EINVAL;
 	}
 
@@ -2895,19 +2895,19 @@ static int nbu2ss_ep_set_halt(struct usb_ep *_ep, int value)
 /*	INFO("=== %s()\n", __func__); */
 
 	if (!_ep) {
-		ERR("%s, bad param\n", __func__);
+		pr_err("udc: %s, bad param\n", __func__);
 		return -EINVAL;
 	}
 
 	ep = container_of(_ep, struct nbu2ss_ep, ep);
 	if (!ep) {
-		ERR("%s, bad ep\n", __func__);
+		pr_err("udc: %s, bad ep\n", __func__);
 		return -EINVAL;
 	}
 
 	udc = ep->udc;
 	if (!udc) {
-		ERR(" *** %s, bad udc\n", __func__);
+		pr_err("udc: *** %s, bad udc\n", __func__);
 		return -EINVAL;
 	}
 
@@ -2949,19 +2949,19 @@ static int nbu2ss_ep_fifo_status(struct usb_ep *_ep)
 /*	INFO("=== %s()\n", __func__); */
 
 	if (!_ep) {
-		ERR("%s, bad param\n", __func__);
+		pr_err("udc: %s, bad param\n", __func__);
 		return -EINVAL;
 	}
 
 	ep = container_of(_ep, struct nbu2ss_ep, ep);
 	if (!ep) {
-		ERR("%s, bad ep\n", __func__);
+		pr_err("udc: %s, bad ep\n", __func__);
 		return -EINVAL;
 	}
 
 	udc = ep->udc;
 	if (!udc) {
-		ERR("%s, bad udc\n", __func__);
+		pr_err("udc: %s, bad udc\n", __func__);
 		return -EINVAL;
 	}
 
@@ -2997,19 +2997,19 @@ static void  nbu2ss_ep_fifo_flush(struct usb_ep *_ep)
 /*	INFO("=== %s()\n", __func__); */
 
 	if (!_ep) {
-		ERR("%s, bad param\n", __func__);
+		pr_err("udc: %s, bad param\n", __func__);
 		return;
 	}
 
 	ep = container_of(_ep, struct nbu2ss_ep, ep);
 	if (!_ep) {
-		ERR("%s, bad ep\n", __func__);
+		pr_err("udc: %s, bad ep\n", __func__);
 		return;
 	}
 
 	udc = ep->udc;
 	if (!udc) {
-		ERR("%s, bad udc\n", __func__);
+		pr_err("udc: %s, bad udc\n", __func__);
 		return;
 	}
 
@@ -3053,7 +3053,7 @@ static int nbu2ss_gad_get_frame(struct usb_gadget *pgadget)
 /*	INFO("=== %s()\n", __func__); */
 
 	if (pgadget == NULL) {
-		ERR("%s, bad param\n", __func__);
+		pr_err("udc: %s, bad param\n", __func__);
 		return -EINVAL;
 	}
 
@@ -3083,7 +3083,7 @@ static int nbu2ss_gad_wakeup(struct usb_gadget *pgadget)
 /*	INFO("=== %s()\n", __func__); */
 
 	if (pgadget == NULL) {
-		ERR("%s, bad param\n", __func__);
+		pr_err("%s, bad param\n", __func__);
 		return -EINVAL;
 	}
 
@@ -3123,7 +3123,7 @@ static int nbu2ss_gad_set_selfpowered(struct usb_gadget *pgadget,
 /*	INFO("=== %s()\n", __func__); */
 
 	if (pgadget == NULL) {
-		ERR("%s, bad param\n", __func__);
+		pr_err("udc: %s, bad param\n", __func__);
 		return -EINVAL;
 	}
 
@@ -3152,7 +3152,7 @@ static int nbu2ss_gad_vbus_draw(struct usb_gadget *pgadget, unsigned mA)
 /*	INFO("=== %s()\n", __func__); */
 
 	if (pgadget == NULL) {
-		ERR("%s, bad param\n", __func__);
+		pr_err("udc: %s, bad param\n", __func__);
 		return -EINVAL;
 	}
 
@@ -3174,7 +3174,7 @@ static int nbu2ss_gad_pullup(struct usb_gadget *pgadget, int is_on)
 /*	INFO("=== %s()\n", __func__); */
 
 	if (pgadget == NULL) {
-		ERR("%s, bad param\n", __func__);
+		pr_err("udc: %s, bad param\n", __func__);
 		return -EINVAL;
 	}
 
-- 
1.9.1

[PATCH v4 4/6] Staging: emxx_udc: Replace custom printk micro ERR with dev_err

[Haneen Mohammed]

This patch removes the other half of ERR micros that uses "printk(KERN_ERR" and replace them with dev_err, to fix issue addressed by checkpatch.pl.

Signed-off-by: Haneen Mohammed <hamohammed.sa@gmail.com>
---
 drivers/staging/emxx_udc/emxx_udc.c | 24 ++++++++++++------------
 1 file changed, 12 insertions(+), 12 deletions(-)

diff --git a/drivers/staging/emxx_udc/emxx_udc.c b/drivers/staging/emxx_udc/emxx_udc.c
index f33980c..bf4801d 100644
--- a/drivers/staging/emxx_udc/emxx_udc.c
+++ b/drivers/staging/emxx_udc/emxx_udc.c
@@ -808,7 +808,7 @@ static int _nbu2ss_ep0_out_transfer(
 		return 0;		/* Short Packet Transfer End */
 
 	if (req->req.actual > req->req.length) {
-		ERR(" *** Overrun Error\n");
+		dev_err(udc->dev, " *** Overrun Error\n");
 		return -EOVERFLOW;
 	}
 
@@ -1026,8 +1026,8 @@ static int _nbu2ss_epn_out_transfer(
 	}
 
 	if (req->req.actual > req->req.length) {
-		ERR(" *** Overrun Error\n");
-		ERR(" *** actual = %d, length = %d\n",
+		dev_err(udc->dev, " *** Overrun Error\n");
+		dev_err(udc->dev, " *** actual = %d, length = %d\n",
 			req->req.actual, req->req.length);
 		result = -EOVERFLOW;
 	}
@@ -1638,7 +1638,7 @@ static int std_req_get_status(struct nbu2ss_udc *udc)
 		_nbu2ss_ep0_in_transfer(udc, &udc->ep[0], &udc->ep0_req);
 
 	} else {
-		ERR("*** Error GET_STATUS\n");
+		dev_err(udc->dev, "*** Error GET_STATUS\n");
 	}
 
 	return result;
@@ -2350,7 +2350,7 @@ static int _nbu2ss_enable_controller(struct nbu2ss_udc *udc)
 		waitcnt++;
 		udelay(1);	/* 1us wait */
 		if (waitcnt == EPC_PLL_LOCK_COUNT) {
-			ERR("*** Reset Cancel failed\n");
+			dev_err(udc->dev, "*** Reset Cancel failed\n");
 			return -EINVAL;
 		}
 	};
@@ -2637,7 +2637,7 @@ static int nbu2ss_ep_enable(
 	if ((udc->driver == NULL)
 		|| (udc->gadget.speed == USB_SPEED_UNKNOWN)) {
 
-		ERR(" *** %s, udc !!\n", __func__);
+		dev_err(udc->dev, " *** %s, udc !!\n", __func__);
 		return -ESHUTDOWN;
 	}
 
@@ -2778,7 +2778,7 @@ static int nbu2ss_ep_queue(
 	}
 
 	if (unlikely(!udc->driver)) {
-		ERR("%s, bogus device state %p\n", __func__, udc->driver);
+		dev_err(udc->dev, "%s, bogus device state %p\n", __func__, udc->driver);
 		return -ESHUTDOWN;
 	}
 
@@ -2817,7 +2817,7 @@ static int nbu2ss_ep_queue(
 
 		result = _nbu2ss_start_transfer(udc, ep, req, FALSE);
 		if (result < 0) {
-			ERR(" *** %s, result = %d\n", __func__, result);
+			dev_err(udc->dev, " *** %s, result = %d\n", __func__, result);
 			list_del(&req->queue);
 		} else if ((ep->epnum > 0) && (ep->direct == USB_DIR_OUT)) {
 #ifdef USE_DMA
@@ -3059,7 +3059,7 @@ static int nbu2ss_gad_get_frame(struct usb_gadget *pgadget)
 
 	udc = container_of(pgadget, struct nbu2ss_udc, gadget);
 	if (udc == NULL) {
-		ERR("%s, udc == NULL\n", __func__);
+		dev_err(&pgadget->dev, "%s, udc == NULL\n", __func__);
 		return -EINVAL;
 	}
 
@@ -3089,7 +3089,7 @@ static int nbu2ss_gad_wakeup(struct usb_gadget *pgadget)
 
 	udc = container_of(pgadget, struct nbu2ss_udc, gadget);
 	if (udc == NULL) {
-		ERR("%s, udc == NULL\n", __func__);
+		dev_err(&pgadget->dev, "%s, udc == NULL\n", __func__);
 		return -EINVAL;
 	}
 
@@ -3345,7 +3345,7 @@ static int nbu2ss_drv_probe(struct platform_device *pdev)
 
 	/* USB Function Controller Interrupt */
 	if (status != 0) {
-		ERR("request_irq(USB_UDC_IRQ_1) failed\n");
+		dev_err(udc->dev, "request_irq(USB_UDC_IRQ_1) failed\n");
 		goto cleanup1;
 	}
 
@@ -3365,7 +3365,7 @@ static int nbu2ss_drv_probe(struct platform_device *pdev)
 				udc);
 
 	if (status != 0) {
-		ERR("request_irq(INT_VBUS) failed\n");
+		dev_err(udc->dev, "request_irq(INT_VBUS) failed\n");
 		goto cleanup1;
 	}
 
-- 
1.9.1

[PATCH v4 5/6] Staging: emxx_udc: Remove custom printk micro ERR

[Haneen Mohammed]

This patch removes custom printk micro ERR. All the calls to this micro were replaced by de_err and pr_err.

Signed-off-by: Haneen Mohammed <hamohammed.sa@gmail.com>
---
 drivers/staging/emxx_udc/emxx_udc.h | 1 -
 1 file changed, 1 deletion(-)

diff --git a/drivers/staging/emxx_udc/emxx_udc.h b/drivers/staging/emxx_udc/emxx_udc.h
index 7b2fcb6..c6cdde4 100644
--- a/drivers/staging/emxx_udc/emxx_udc.h
+++ b/drivers/staging/emxx_udc/emxx_udc.h
@@ -644,6 +644,5 @@ union usb_reg_access {
 };
 
 /*-------------------------------------------------------------------------*/
-#define ERR(stuff...)		printk(KERN_ERR "udc: " stuff)
 
 #endif  /* _LINUX_EMXX_H */
-- 
1.9.1

[PATCH v4 6/6] Staging: emxx_udc: Clean dev_err() logging

[Haneen Mohammed]

This patch removes  __func__ from dev_err.
dev_err includes the function name in the log printout, so there is no
need to include it manually.

Signed-off-by: Haneen Mohammed <hamohammed.sa@gmail.com>
---
 drivers/staging/emxx_udc/emxx_udc.c | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/drivers/staging/emxx_udc/emxx_udc.c b/drivers/staging/emxx_udc/emxx_udc.c
index bf4801d..2c26751 100644
--- a/drivers/staging/emxx_udc/emxx_udc.c
+++ b/drivers/staging/emxx_udc/emxx_udc.c
@@ -2637,7 +2637,7 @@ static int nbu2ss_ep_enable(
 	if ((udc->driver == NULL)
 		|| (udc->gadget.speed == USB_SPEED_UNKNOWN)) {
 
-		dev_err(udc->dev, " *** %s, udc !!\n", __func__);
+		dev_err(udc->dev, "udc !!\n");
 		return -ESHUTDOWN;
 	}
 
@@ -2778,7 +2778,7 @@ static int nbu2ss_ep_queue(
 	}
 
 	if (unlikely(!udc->driver)) {
-		dev_err(udc->dev, "%s, bogus device state %p\n", __func__, udc->driver);
+		dev_err(udc->dev, "bogus device state %p\n", udc->driver);
 		return -ESHUTDOWN;
 	}
 
@@ -2817,7 +2817,7 @@ static int nbu2ss_ep_queue(
 
 		result = _nbu2ss_start_transfer(udc, ep, req, FALSE);
 		if (result < 0) {
-			dev_err(udc->dev, " *** %s, result = %d\n", __func__, result);
+			dev_err(udc->dev, "result = %d\n", result);
 			list_del(&req->queue);
 		} else if ((ep->epnum > 0) && (ep->direct == USB_DIR_OUT)) {
 #ifdef USE_DMA
@@ -3059,7 +3059,7 @@ static int nbu2ss_gad_get_frame(struct usb_gadget *pgadget)
 
 	udc = container_of(pgadget, struct nbu2ss_udc, gadget);
 	if (udc == NULL) {
-		dev_err(&pgadget->dev, "%s, udc == NULL\n", __func__);
+		dev_err(&pgadget->dev, "udc == NULL\n");
 		return -EINVAL;
 	}
 
@@ -3089,7 +3089,7 @@ static int nbu2ss_gad_wakeup(struct usb_gadget *pgadget)
 
 	udc = container_of(pgadget, struct nbu2ss_udc, gadget);
 	if (udc == NULL) {
-		dev_err(&pgadget->dev, "%s, udc == NULL\n", __func__);
+		dev_err(&pgadget->dev, "udc == NULL\n");
 		return -EINVAL;
 	}
 
-- 
1.9.1

[PATCH v4 1/6] Staging: emxx_udc: Fix do not add new typedefs

[Haneen Mohammed]

This patch fixes the following checkpatch.pl warning:"do not add new
typedefs".
Remove typedefs keyword and rename identifiers appropriately.
Update related  files.

Signed-off-by: Haneen Mohammed <hamohammed.sa@gmail.com>
---
v4: Replace struct with volatile union for usb_reg_access.
v3: Remove all typedefs and create patchset from emxx_udc.
v2: Remove typedefs appropriately and change related file.

 drivers/staging/emxx_udc/emxx_udc.c | 60 ++++++++++++++++++-------------------
 drivers/staging/emxx_udc/emxx_udc.h | 26 ++++++++--------
 2 files changed, 43 insertions(+), 43 deletions(-)

diff --git a/drivers/staging/emxx_udc/emxx_udc.c b/drivers/staging/emxx_udc/emxx_udc.c
index 82c492f..e33ccc4 100644
--- a/drivers/staging/emxx_udc/emxx_udc.c
+++ b/drivers/staging/emxx_udc/emxx_udc.c
@@ -201,7 +201,7 @@ static u32 _nbu2ss_get_begin_ram_address(struct nbu2ss_udc *udc)
 	u32		num, buf_type;
 	u32		data, last_ram_adr, use_ram_size;
 
-	PT_EP_REGS	p_ep_regs;
+	struct ep_regs *p_ep_regs;
 
 	last_ram_adr = (D_RAM_SIZE_CTRL / sizeof(u32)) * 2;
 	use_ram_size = 0;
@@ -394,7 +394,7 @@ static void _nbu2ss_ep_dma_exit(struct nbu2ss_udc *udc, struct nbu2ss_ep *ep)
 {
 	u32		num;
 	u32		data;
-	PT_FC_REGS	preg = udc->p_regs;
+	struct fc_regs	*preg = udc->p_regs;
 
 	if (udc->vbus_active == 0)
 		return;		/* VBUS OFF */
@@ -425,7 +425,7 @@ 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)
 {
-	PT_FC_REGS	preg = udc->p_regs;
+	struct fc_regs	*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 */
@@ -443,7 +443,7 @@ static void _nbu2ss_ep_in_end(
 {
 	u32		data;
 	u32		num;
-	PT_FC_REGS	preg = udc->p_regs;
+	struct fc_regs	*preg = udc->p_regs;
 
 	if (length >= sizeof(u32))
 		return;
@@ -567,7 +567,7 @@ static int EP0_out_PIO(struct nbu2ss_udc *udc, u8 *pBuf, u32 length)
 	u32		i;
 	int		nret   = 0;
 	u32		iWordLength = 0;
-	USB_REG_ACCESS *pBuf32 = (USB_REG_ACCESS *)pBuf;
+	volatile union usb_reg_access *pBuf32 = (volatile union usb_reg_access *)pBuf;
 
 	/*------------------------------------------------------------*/
 	/* Read Length */
@@ -592,8 +592,8 @@ static int EP0_out_OverBytes(struct nbu2ss_udc *udc, u8 *pBuf, u32 length)
 {
 	u32		i;
 	u32		iReadSize = 0;
-	USB_REG_ACCESS  Temp32;
-	USB_REG_ACCESS *pBuf32 = (USB_REG_ACCESS *)pBuf;
+	volatile union usb_reg_access  Temp32;
+	volatile union usb_reg_access  *pBuf32 = (volatile union usb_reg_access *)pBuf;
 
 	if ((0 < length) && (length < sizeof(u32))) {
 		Temp32.dw = _nbu2ss_readl(&udc->p_regs->EP0_READ);
@@ -613,7 +613,7 @@ static int EP0_in_PIO(struct nbu2ss_udc *udc, u8 *pBuf, u32 length)
 	u32		iMaxLength   = EP0_PACKETSIZE;
 	u32		iWordLength  = 0;
 	u32		iWriteLength = 0;
-	USB_REG_ACCESS *pBuf32 = (USB_REG_ACCESS *)pBuf;
+	volatile union usb_reg_access  *pBuf32 = (volatile union usb_reg_access *)pBuf;
 
 	/*------------------------------------------------------------*/
 	/* Transfer Length */
@@ -638,8 +638,8 @@ static int EP0_in_PIO(struct nbu2ss_udc *udc, u8 *pBuf, u32 length)
 static int EP0_in_OverBytes(struct nbu2ss_udc *udc, u8 *pBuf, u32 iRemainSize)
 {
 	u32		i;
-	USB_REG_ACCESS Temp32;
-	USB_REG_ACCESS *pBuf32 = (USB_REG_ACCESS *)pBuf;
+	volatile union usb_reg_access  Temp32;
+	volatile union usb_reg_access  *pBuf32 = (volatile union usb_reg_access *)pBuf;
 
 	if ((0 < iRemainSize) && (iRemainSize < sizeof(u32))) {
 		for (i = 0 ; i < iRemainSize ; i++)
@@ -840,7 +840,7 @@ static int _nbu2ss_out_dma(
 	u32		burst = 1;
 	u32		data;
 	int		result = -EINVAL;
-	PT_FC_REGS	preg = udc->p_regs;
+	struct fc_regs	*preg = udc->p_regs;
 
 	if (req->dma_flag)
 		return 1;		/* DMA is forwarded */
@@ -900,10 +900,10 @@ static int _nbu2ss_epn_out_pio(
 	u32		i;
 	u32		data;
 	u32		iWordLength;
-	USB_REG_ACCESS	Temp32;
-	USB_REG_ACCESS	*pBuf32;
+	volatile union usb_reg_access	Temp32;
+	volatile union usb_reg_access	*pBuf32;
 	int		result = 0;
-	PT_FC_REGS	preg = udc->p_regs;
+	struct fc_regs	*preg = udc->p_regs;
 
 	if (req->dma_flag)
 		return 1;		/* DMA is forwarded */
@@ -912,7 +912,7 @@ static int _nbu2ss_epn_out_pio(
 		return 0;
 
 	pBuffer = (u8 *)req->req.buf;
-	pBuf32 = (USB_REG_ACCESS *)(pBuffer + req->req.actual);
+	pBuf32 = (volatile union usb_reg_access *)(pBuffer + req->req.actual);
 
 	iWordLength = length / sizeof(u32);
 	if (iWordLength > 0) {
@@ -988,7 +988,7 @@ static int _nbu2ss_epn_out_transfer(
 	u32		num;
 	u32		iRecvLength;
 	int		result = 1;
-	PT_FC_REGS	preg = udc->p_regs;
+	struct fc_regs	*preg = udc->p_regs;
 
 	if (ep->epnum == 0)
 		return -EINVAL;
@@ -1051,7 +1051,7 @@ static int _nbu2ss_in_dma(
 	u32		iWriteLength;
 	u32		data;
 	int		result = -EINVAL;
-	PT_FC_REGS	preg = udc->p_regs;
+	struct fc_regs	*preg = udc->p_regs;
 
 	if (req->dma_flag)
 		return 1;		/* DMA is forwarded */
@@ -1123,17 +1123,17 @@ static int _nbu2ss_epn_in_pio(
 	u32		i;
 	u32		data;
 	u32		iWordLength;
-	USB_REG_ACCESS	Temp32;
-	USB_REG_ACCESS	*pBuf32 = NULL;
+	volatile union usb_reg_access	Temp32;
+	volatile union usb_reg_access	*pBuf32 = NULL;
 	int		result = 0;
-	PT_FC_REGS	preg = udc->p_regs;
+	struct fc_regs	*preg = udc->p_regs;
 
 	if (req->dma_flag)
 		return 1;		/* DMA is forwarded */
 
 	if (length > 0) {
 		pBuffer = (u8 *)req->req.buf;
-		pBuf32 = (USB_REG_ACCESS *)(pBuffer + req->req.actual);
+		pBuf32 = (volatile union usb_reg_access *)(pBuffer + req->req.actual);
 
 		iWordLength = length / sizeof(u32);
 		if (iWordLength > 0) {
@@ -1347,7 +1347,7 @@ static void _nbu2ss_set_endpoint_stall(
 	u8		num, epnum;
 	u32		data;
 	struct nbu2ss_ep *ep;
-	PT_FC_REGS	preg = udc->p_regs;
+	struct fc_regs	*preg = udc->p_regs;
 
 	if ((ep_adrs == 0) || (ep_adrs == 0x80)) {
 		if (bstall) {
@@ -1471,7 +1471,7 @@ static int _nbu2ss_get_ep_stall(struct nbu2ss_udc *udc, u8 ep_adrs)
 {
 	u8		epnum;
 	u32		data = 0, bit_data;
-	PT_FC_REGS	preg = udc->p_regs;
+	struct fc_regs	*preg = udc->p_regs;
 
 	epnum = ep_adrs & ~USB_ENDPOINT_DIR_MASK;
 	if (epnum == 0) {
@@ -1566,7 +1566,7 @@ static void _nbu2ss_epn_set_stall(
 	u32	regdata;
 	int	limit_cnt = 0;
 
-	PT_FC_REGS	preg = udc->p_regs;
+	struct fc_regs	*preg = udc->p_regs;
 
 	if (ep->direct == USB_DIR_IN) {
 		for (limit_cnt = 0
@@ -1994,7 +1994,7 @@ static inline void _nbu2ss_epn_in_int(
 	int	result = 0;
 	u32	status;
 
-	PT_FC_REGS	preg = udc->p_regs;
+	struct fc_regs	*preg = udc->p_regs;
 
 	if (req->dma_flag)
 		return;		/* DMA is forwarded */
@@ -2090,7 +2090,7 @@ static inline void _nbu2ss_epn_out_dma_int(
 	u32		num;
 	u32		dmacnt, ep_dmacnt;
 	u32		mpkt;
-	PT_FC_REGS	preg = udc->p_regs;
+	struct fc_regs	*preg = udc->p_regs;
 
 	num = ep->epnum - 1;
 
@@ -2293,7 +2293,7 @@ static int _nbu2ss_pullup(struct nbu2ss_udc *udc, int is_on)
 /*-------------------------------------------------------------------------*/
 static void _nbu2ss_fifo_flush(struct nbu2ss_udc *udc, struct nbu2ss_ep *ep)
 {
-	PT_FC_REGS	p = udc->p_regs;
+	struct fc_regs	*p = udc->p_regs;
 
 	if (udc->vbus_active == 0)
 		return;
@@ -2536,7 +2536,7 @@ static irqreturn_t _nbu2ss_udc_irq(int irq, void *_udc)
 	u32	epnum, int_bit;
 
 	struct nbu2ss_udc	*udc = (struct nbu2ss_udc *)_udc;
-	PT_FC_REGS		preg = udc->p_regs;
+	struct fc_regs	*preg = udc->p_regs;
 
 	if (gpio_get_value(VBUS_VALUE) == 0) {
 		_nbu2ss_writel(&preg->USB_INT_STA, ~USB_INT_STA_RW);
@@ -2944,7 +2944,7 @@ static int nbu2ss_ep_fifo_status(struct usb_ep *_ep)
 	struct nbu2ss_ep	*ep;
 	struct nbu2ss_udc	*udc;
 	unsigned long		flags;
-	PT_FC_REGS		preg;
+	struct fc_regs		*preg;
 
 /*	INFO("=== %s()\n", __func__); */
 
@@ -3341,7 +3341,7 @@ static int nbu2ss_drv_probe(struct platform_device *pdev)
 				  0, driver_name, udc);
 
 	/* IO Memory */
-	udc->p_regs = (PT_FC_REGS)mmio_base;
+	udc->p_regs = (struct fc_regs *)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 ee1b80d..c1f98b3 100644
--- a/drivers/staging/emxx_udc/emxx_udc.h
+++ b/drivers/staging/emxx_udc/emxx_udc.h
@@ -474,8 +474,8 @@
 
 /*===========================================================================*/
 /* Struct */
-/*------- T_EP_REGS */
-typedef struct _T_EP_REGS {
+/*------- ep_regs */
+struct ep_regs {
 	u32 EP_CONTROL;			/* EP Control */
 	u32 EP_STATUS;			/* EP Status */
 	u32 EP_INT_ENA;			/* EP Interrupt Enable */
@@ -484,18 +484,18 @@ typedef struct _T_EP_REGS {
 	u32 EP_LEN_DCNT;		/* EP Length & DMA count */
 	u32 EP_READ;			/* EP Read */
 	u32 EP_WRITE;			/* EP Write */
-} T_EP_REGS, *PT_EP_REGS;
+};
 
-/*------- T_EP_DCR */
-typedef struct _T_EP_DCR {
+/*------- ep_dcr */
+struct ep_dcr {
 	u32 EP_DCR1;			/* EP_DCR1 */
 	u32 EP_DCR2;			/* EP_DCR2 */
 	u32 EP_TADR;			/* EP_TADR */
 	u32 Reserved;			/* Reserved */
-} T_EP_DCR, *PT_EP_DCR;
+};
 
 /*------- Function Registers */
-typedef struct _T_FC_REGS {
+struct fc_regs {
 	u32 USB_CONTROL;		/* (0x0000) USB Control */
 	u32 USB_STATUS;			/* (0x0004) USB Status */
 	u32 USB_ADDRESS;		/* (0x0008) USB Address */
@@ -513,7 +513,7 @@ typedef struct _T_FC_REGS {
 	u32 EP0_READ;			/* (0x0038) EP0 Read */
 	u32 EP0_WRITE;			/* (0x003C) EP0 Write */
 
-	T_EP_REGS EP_REGS[REG_EP_NUM];	/* Endpoint Register */
+	struct ep_regs EP_REGS[REG_EP_NUM];	/* Endpoint Register */
 
 	u8 Reserved220[0x1000-0x220];	/* (0x0220:0x0FFF) Reserved */
 
@@ -531,11 +531,11 @@ typedef struct _T_FC_REGS {
 
 	u8 Reserved1028[0x110-0x28];	/* (0x1028:0x110F) Reserved */
 
-	T_EP_DCR EP_DCR[REG_EP_NUM];	/* */
+	struct ep_dcr EP_DCR[REG_EP_NUM];	/* */
 
 	u8 Reserved1200[0x1000-0x200];	/* Reserved */
 
-} __attribute__ ((aligned(32))) T_FC_REGS, *PT_FC_REGS;
+} __attribute__ ((aligned(32)));
 
 
 
@@ -632,16 +632,16 @@ struct nbu2ss_udc {
 
 	u32		curr_config;	/* Current Configuration Number */
 
-	PT_FC_REGS		p_regs;
+	struct fc_regs		*p_regs;
 };
 
 /* USB register access structure */
-typedef volatile union {
+volatile union usb_reg_access {
 	struct {
 		unsigned char	DATA[4];
 	} byte;
 	unsigned int		dw;
-} USB_REG_ACCESS;
+};
 
 /*-------------------------------------------------------------------------*/
 #define ERR(stuff...)		printk(KERN_ERR "udc: " stuff)
-- 
1.9.1

Re: [Outreachy kernel] [PATCH v4 1/6] Staging: emxx_udc: Fix do not add new typedefs

[Julia Lawall]

> -	USB_REG_ACCESS *pBuf32 = (USB_REG_ACCESS *)pBuf;
> +	volatile union usb_reg_access *pBuf32 = (volatile union usb_reg_access *)pBuf;

This, and other lines like it, exceed 80 characters.  Since pBuf is already
a pointer type, is the cast actually needed?  I would guess that even with
the volatile, it is not, but I am not sure.

julia

Re: [Outreachy kernel] [PATCH v4 5/6] Staging: emxx_udc: Remove custom printk micro ERR

[Julia Lawall]

On Mon, 23 Feb 2015, Haneen Mohammed wrote:

> This patch removes custom printk micro ERR. All the calls to this micro were replaced by de_err and pr_err.

micro -> macro

> 
> Signed-off-by: Haneen Mohammed <hamohammed.sa@gmail.com>
> ---
>  drivers/staging/emxx_udc/emxx_udc.h | 1 -
>  1 file changed, 1 deletion(-)
> 
> diff --git a/drivers/staging/emxx_udc/emxx_udc.h b/drivers/staging/emxx_udc/emxx_udc.h
> index 7b2fcb6..c6cdde4 100644
> --- a/drivers/staging/emxx_udc/emxx_udc.h
> +++ b/drivers/staging/emxx_udc/emxx_udc.h
> @@ -644,6 +644,5 @@ union usb_reg_access {
>  };
>  
>  /*-------------------------------------------------------------------------*/
> -#define ERR(stuff...)		printk(KERN_ERR "udc: " stuff)
>  
>  #endif  /* _LINUX_EMXX_H */
> -- 
> 1.9.1
> 
> -- 
> You received this message because you are subscribed to the Google Groups "outreachy-kernel" group.
> To unsubscribe from this group and stop receiving emails from it, send an email to outreachy-kernel+unsubscribe@googlegroups.com.
> To post to this group, send email to outreachy-kernel@googlegroups.com.
> To view this discussion on the web visit https://groups.google.com/d/msgid/outreachy-kernel/d0975ddfd74bef068fbf73f3d4089253ba1d1614.1424645872.git.hamohammed.sa%40gmail.com.
> For more options, visit https://groups.google.com/d/optout.
> 

Re: [Outreachy kernel] [PATCH v4 4/6] Staging: emxx_udc: Replace custom printk micro ERR with dev_err

[Julia Lawall]

On Mon, 23 Feb 2015, Haneen Mohammed wrote:

> This patch removes the other half of ERR micros that uses 
> "printk(KERN_ERR" and replace them with dev_err, to fix issue addressed 
> by checkpatch.pl.

micro -> macro here too

julia

> 
> Signed-off-by: Haneen Mohammed <hamohammed.sa@gmail.com>
> ---
>  drivers/staging/emxx_udc/emxx_udc.c | 24 ++++++++++++------------
>  1 file changed, 12 insertions(+), 12 deletions(-)
> 
> diff --git a/drivers/staging/emxx_udc/emxx_udc.c b/drivers/staging/emxx_udc/emxx_udc.c
> index f33980c..bf4801d 100644
> --- a/drivers/staging/emxx_udc/emxx_udc.c
> +++ b/drivers/staging/emxx_udc/emxx_udc.c
> @@ -808,7 +808,7 @@ static int _nbu2ss_ep0_out_transfer(
>  		return 0;		/* Short Packet Transfer End */
>  
>  	if (req->req.actual > req->req.length) {
> -		ERR(" *** Overrun Error\n");
> +		dev_err(udc->dev, " *** Overrun Error\n");
>  		return -EOVERFLOW;
>  	}
>  
> @@ -1026,8 +1026,8 @@ static int _nbu2ss_epn_out_transfer(
>  	}
>  
>  	if (req->req.actual > req->req.length) {
> -		ERR(" *** Overrun Error\n");
> -		ERR(" *** actual = %d, length = %d\n",
> +		dev_err(udc->dev, " *** Overrun Error\n");
> +		dev_err(udc->dev, " *** actual = %d, length = %d\n",
>  			req->req.actual, req->req.length);
>  		result = -EOVERFLOW;
>  	}
> @@ -1638,7 +1638,7 @@ static int std_req_get_status(struct nbu2ss_udc *udc)
>  		_nbu2ss_ep0_in_transfer(udc, &udc->ep[0], &udc->ep0_req);
>  
>  	} else {
> -		ERR("*** Error GET_STATUS\n");
> +		dev_err(udc->dev, "*** Error GET_STATUS\n");
>  	}
>  
>  	return result;
> @@ -2350,7 +2350,7 @@ static int _nbu2ss_enable_controller(struct nbu2ss_udc *udc)
>  		waitcnt++;
>  		udelay(1);	/* 1us wait */
>  		if (waitcnt == EPC_PLL_LOCK_COUNT) {
> -			ERR("*** Reset Cancel failed\n");
> +			dev_err(udc->dev, "*** Reset Cancel failed\n");
>  			return -EINVAL;
>  		}
>  	};
> @@ -2637,7 +2637,7 @@ static int nbu2ss_ep_enable(
>  	if ((udc->driver == NULL)
>  		|| (udc->gadget.speed == USB_SPEED_UNKNOWN)) {
>  
> -		ERR(" *** %s, udc !!\n", __func__);
> +		dev_err(udc->dev, " *** %s, udc !!\n", __func__);
>  		return -ESHUTDOWN;
>  	}
>  
> @@ -2778,7 +2778,7 @@ static int nbu2ss_ep_queue(
>  	}
>  
>  	if (unlikely(!udc->driver)) {
> -		ERR("%s, bogus device state %p\n", __func__, udc->driver);
> +		dev_err(udc->dev, "%s, bogus device state %p\n", __func__, udc->driver);
>  		return -ESHUTDOWN;
>  	}
>  
> @@ -2817,7 +2817,7 @@ static int nbu2ss_ep_queue(
>  
>  		result = _nbu2ss_start_transfer(udc, ep, req, FALSE);
>  		if (result < 0) {
> -			ERR(" *** %s, result = %d\n", __func__, result);
> +			dev_err(udc->dev, " *** %s, result = %d\n", __func__, result);
>  			list_del(&req->queue);
>  		} else if ((ep->epnum > 0) && (ep->direct == USB_DIR_OUT)) {
>  #ifdef USE_DMA
> @@ -3059,7 +3059,7 @@ static int nbu2ss_gad_get_frame(struct usb_gadget *pgadget)
>  
>  	udc = container_of(pgadget, struct nbu2ss_udc, gadget);
>  	if (udc == NULL) {
> -		ERR("%s, udc == NULL\n", __func__);
> +		dev_err(&pgadget->dev, "%s, udc == NULL\n", __func__);
>  		return -EINVAL;
>  	}
>  
> @@ -3089,7 +3089,7 @@ static int nbu2ss_gad_wakeup(struct usb_gadget *pgadget)
>  
>  	udc = container_of(pgadget, struct nbu2ss_udc, gadget);
>  	if (udc == NULL) {
> -		ERR("%s, udc == NULL\n", __func__);
> +		dev_err(&pgadget->dev, "%s, udc == NULL\n", __func__);
>  		return -EINVAL;
>  	}
>  
> @@ -3345,7 +3345,7 @@ static int nbu2ss_drv_probe(struct platform_device *pdev)
>  
>  	/* USB Function Controller Interrupt */
>  	if (status != 0) {
> -		ERR("request_irq(USB_UDC_IRQ_1) failed\n");
> +		dev_err(udc->dev, "request_irq(USB_UDC_IRQ_1) failed\n");
>  		goto cleanup1;
>  	}
>  
> @@ -3365,7 +3365,7 @@ static int nbu2ss_drv_probe(struct platform_device *pdev)
>  				udc);
>  
>  	if (status != 0) {
> -		ERR("request_irq(INT_VBUS) failed\n");
> +		dev_err(udc->dev, "request_irq(INT_VBUS) failed\n");
>  		goto cleanup1;
>  	}
>  
> -- 
> 1.9.1
> 
> -- 
> You received this message because you are subscribed to the Google Groups "outreachy-kernel" group.
> To unsubscribe from this group and stop receiving emails from it, send an email to outreachy-kernel+unsubscribe@googlegroups.com.
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> To view this discussion on the web visit https://groups.google.com/d/msgid/outreachy-kernel/65ad55db16d7829286383d9e37ad6f5456388918.1424645872.git.hamohammed.sa%40gmail.com.
> For more options, visit https://groups.google.com/d/optout.
> 

Re: [Outreachy kernel] [PATCH v4 3/6] Staging: emxx_udc: Replace custom printk micro ERR with pr_err

[Julia Lawall]

On Mon, 23 Feb 2015, Haneen Mohammed wrote:

> This patch removes half custom printk micros ERR and replace it with
> pr_err. pr_err used because no appropriate dev variable were found.  Issue addressed by checkpathc.pl.

micro -> macro

> Signed-off-by: Haneen Mohammed <hamohammed.sa@gmail.com>
> ---
>  drivers/staging/emxx_udc/emxx_udc.c | 56 ++++++++++++++++++-------------------
>  1 file changed, 28 insertions(+), 28 deletions(-)
> 
> diff --git a/drivers/staging/emxx_udc/emxx_udc.c b/drivers/staging/emxx_udc/emxx_udc.c
> index c9f5e5d..f33980c 100644
> --- a/drivers/staging/emxx_udc/emxx_udc.c
> +++ b/drivers/staging/emxx_udc/emxx_udc.c
> @@ -115,7 +115,7 @@ static void _nbu2ss_dump_register(struct nbu2ss_udc *udc)

The following code appears to be in the function _nbu2ss_dump_register, 
which has a parameter of type nbu2ss_udc.  This parameter has a field 
struct device *dev; that you can use for dev_err.  This seems to apply in 
some other cases here.

>  	pr_info("=== %s()\n", __func__);
>  
>  	if (udc == NULL) {
> -		ERR("%s udc == NULL\n", __func__);
> +		pr_err("udc: %s udc == NULL\n", __func__);
>  		return;
>  	}
>  
> @@ -2258,7 +2258,7 @@ static int _nbu2ss_pullup(struct nbu2ss_udc *udc, int is_on)
>  	u32	reg_dt;
>  
>  	if (!udc) {
> -		ERR("%s, bad param\n", __func__);
> +		pr_err("udc: %s, bad param\n", __func__);

You can't use dev_err here because udc is null.  Something else to watch 
out for.

julia

>  		return -EINVAL;
>  	}
>  
> @@ -2612,13 +2612,13 @@ static int nbu2ss_ep_enable(
>  	struct nbu2ss_udc	*udc;
>  
>  	if ((_ep == NULL) || (desc == NULL)) {
> -		ERR(" *** %s, bad param\n", __func__);
> +		pr_err("udc: *** %s, bad param\n", __func__);
>  		return -EINVAL;
>  	}
>  
>  	ep = container_of(_ep, struct nbu2ss_ep, ep);
>  	if ((ep == NULL) || (ep->udc == NULL)) {
> -		ERR(" *** %s, ep == NULL !!\n", __func__);
> +		pr_err("udc:  *** %s, ep == NULL !!\n", __func__);
>  		return -EINVAL;
>  	}
>  
> @@ -2626,7 +2626,7 @@ static int nbu2ss_ep_enable(
>  	if ((ep_type == USB_ENDPOINT_XFER_CONTROL)
>  		|| (ep_type == USB_ENDPOINT_XFER_ISOC)) {
>  
> -		ERR(" *** %s, bat bmAttributes\n", __func__);
> +		pr_err("udc:  *** %s, bat bmAttributes\n", __func__);
>  		return -EINVAL;
>  	}
>  
> @@ -2672,13 +2672,13 @@ static int nbu2ss_ep_disable(struct usb_ep *_ep)
>  	unsigned long		flags;
>  
>  	if (_ep == NULL) {
> -		ERR(" *** %s, bad param\n", __func__);
> +		pr_err("udc:  *** %s, bad param\n", __func__);
>  		return -EINVAL;
>  	}
>  
>  	ep = container_of(_ep, struct nbu2ss_ep, ep);
>  	if ((ep == NULL) || (ep->udc == NULL)) {
> -		ERR(" *** %s, ep == NULL !!\n", __func__);
> +		pr_err("udc:  *** %s, ep == NULL !!\n", __func__);
>  		return -EINVAL;
>  	}
>  
> @@ -2742,10 +2742,10 @@ static int nbu2ss_ep_queue(
>  	/* catch various bogus parameters */
>  	if ((_ep == NULL) || (_req == NULL)) {
>  		if (_ep == NULL)
> -			ERR("*** %s --- _ep == NULL\n", __func__);
> +			pr_err("udc: *** %s --- _ep == NULL\n", __func__);
>  
>  		if (_req == NULL)
> -			ERR("*** %s --- _req == NULL\n", __func__);
> +			pr_err("udc: *** %s --- _req == NULL\n", __func__);
>  
>  		return -EINVAL;
>  	}
> @@ -2756,13 +2756,13 @@ static int nbu2ss_ep_queue(
>  	     || !list_empty(&req->queue))) {
>  
>  		if (!_req->complete)
> -			ERR("*** %s --- !_req->complete\n", __func__);
> +			pr_err("udc: *** %s --- !_req->complete\n", __func__);
>  
>  		if (!_req->buf)
> -			ERR("*** %s --- !_req->buf\n", __func__);
> +			pr_err("udc: *** %s --- !_req->buf\n", __func__);
>  
>  		if (!list_empty(&req->queue))
> -			ERR("*** %s --- !list_empty(&req->queue)\n", __func__);
> +			pr_err("udc: *** %s --- !list_empty(&req->queue)\n", __func__);
>  
>  		return -EINVAL;
>  	}
> @@ -2849,13 +2849,13 @@ static int nbu2ss_ep_dequeue(
>  
>  	/* catch various bogus parameters */
>  	if ((_ep == NULL) || (_req == NULL)) {
> -		/* ERR("%s, bad param(1)\n", __func__); */
> +		/* pr_err("udc: %s, bad param(1)\n", __func__); */
>  		return -EINVAL;
>  	}
>  
>  	ep = container_of(_ep, struct nbu2ss_ep, ep);
>  	if (!ep) {
> -		ERR("%s, ep == NULL !!\n", __func__);
> +		pr_err("udc: %s, ep == NULL !!\n", __func__);
>  		return -EINVAL;
>  	}
>  
> @@ -2895,19 +2895,19 @@ static int nbu2ss_ep_set_halt(struct usb_ep *_ep, int value)
>  /*	INFO("=== %s()\n", __func__); */
>  
>  	if (!_ep) {
> -		ERR("%s, bad param\n", __func__);
> +		pr_err("udc: %s, bad param\n", __func__);
>  		return -EINVAL;
>  	}
>  
>  	ep = container_of(_ep, struct nbu2ss_ep, ep);
>  	if (!ep) {
> -		ERR("%s, bad ep\n", __func__);
> +		pr_err("udc: %s, bad ep\n", __func__);
>  		return -EINVAL;
>  	}
>  
>  	udc = ep->udc;
>  	if (!udc) {
> -		ERR(" *** %s, bad udc\n", __func__);
> +		pr_err("udc: *** %s, bad udc\n", __func__);
>  		return -EINVAL;
>  	}
>  
> @@ -2949,19 +2949,19 @@ static int nbu2ss_ep_fifo_status(struct usb_ep *_ep)
>  /*	INFO("=== %s()\n", __func__); */
>  
>  	if (!_ep) {
> -		ERR("%s, bad param\n", __func__);
> +		pr_err("udc: %s, bad param\n", __func__);
>  		return -EINVAL;
>  	}
>  
>  	ep = container_of(_ep, struct nbu2ss_ep, ep);
>  	if (!ep) {
> -		ERR("%s, bad ep\n", __func__);
> +		pr_err("udc: %s, bad ep\n", __func__);
>  		return -EINVAL;
>  	}
>  
>  	udc = ep->udc;
>  	if (!udc) {
> -		ERR("%s, bad udc\n", __func__);
> +		pr_err("udc: %s, bad udc\n", __func__);
>  		return -EINVAL;
>  	}
>  
> @@ -2997,19 +2997,19 @@ static void  nbu2ss_ep_fifo_flush(struct usb_ep *_ep)
>  /*	INFO("=== %s()\n", __func__); */
>  
>  	if (!_ep) {
> -		ERR("%s, bad param\n", __func__);
> +		pr_err("udc: %s, bad param\n", __func__);
>  		return;
>  	}
>  
>  	ep = container_of(_ep, struct nbu2ss_ep, ep);
>  	if (!_ep) {
> -		ERR("%s, bad ep\n", __func__);
> +		pr_err("udc: %s, bad ep\n", __func__);
>  		return;
>  	}
>  
>  	udc = ep->udc;
>  	if (!udc) {
> -		ERR("%s, bad udc\n", __func__);
> +		pr_err("udc: %s, bad udc\n", __func__);
>  		return;
>  	}
>  
> @@ -3053,7 +3053,7 @@ static int nbu2ss_gad_get_frame(struct usb_gadget *pgadget)
>  /*	INFO("=== %s()\n", __func__); */
>  
>  	if (pgadget == NULL) {
> -		ERR("%s, bad param\n", __func__);
> +		pr_err("udc: %s, bad param\n", __func__);
>  		return -EINVAL;
>  	}
>  
> @@ -3083,7 +3083,7 @@ static int nbu2ss_gad_wakeup(struct usb_gadget *pgadget)
>  /*	INFO("=== %s()\n", __func__); */
>  
>  	if (pgadget == NULL) {
> -		ERR("%s, bad param\n", __func__);
> +		pr_err("%s, bad param\n", __func__);
>  		return -EINVAL;
>  	}
>  
> @@ -3123,7 +3123,7 @@ static int nbu2ss_gad_set_selfpowered(struct usb_gadget *pgadget,
>  /*	INFO("=== %s()\n", __func__); */
>  
>  	if (pgadget == NULL) {
> -		ERR("%s, bad param\n", __func__);
> +		pr_err("udc: %s, bad param\n", __func__);
>  		return -EINVAL;
>  	}
>  
> @@ -3152,7 +3152,7 @@ static int nbu2ss_gad_vbus_draw(struct usb_gadget *pgadget, unsigned mA)
>  /*	INFO("=== %s()\n", __func__); */
>  
>  	if (pgadget == NULL) {
> -		ERR("%s, bad param\n", __func__);
> +		pr_err("udc: %s, bad param\n", __func__);
>  		return -EINVAL;
>  	}
>  
> @@ -3174,7 +3174,7 @@ static int nbu2ss_gad_pullup(struct usb_gadget *pgadget, int is_on)
>  /*	INFO("=== %s()\n", __func__); */
>  
>  	if (pgadget == NULL) {
> -		ERR("%s, bad param\n", __func__);
> +		pr_err("udc: %s, bad param\n", __func__);
>  		return -EINVAL;
>  	}
>  
> -- 
> 1.9.1
> 
> -- 
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> 

Re: [Outreachy kernel] [PATCH v4 2/6] Staging: emxx_udc: Remove volatile from union usb_regs_access

[Julia Lawall]

On Mon, 23 Feb 2015, Haneen Mohammed wrote:

> This patch removes volatile from union usb_regs_access, to fix checkpatch.pl
> warning:
> WARNING: Use of volatile is usually wrong

You need a justification for why it is wrong in this case.

julia

> Signed-off-by: Haneen Mohammed <hamohammed.sa@gmail.com>
> ---
>  drivers/staging/emxx_udc/emxx_udc.c | 24 ++++++++++++------------
>  drivers/staging/emxx_udc/emxx_udc.h |  2 +-
>  2 files changed, 13 insertions(+), 13 deletions(-)
> 
> diff --git a/drivers/staging/emxx_udc/emxx_udc.c b/drivers/staging/emxx_udc/emxx_udc.c
> index e33ccc4..c9f5e5d 100644
> --- a/drivers/staging/emxx_udc/emxx_udc.c
> +++ b/drivers/staging/emxx_udc/emxx_udc.c
> @@ -567,7 +567,7 @@ static int EP0_out_PIO(struct nbu2ss_udc *udc, u8 *pBuf, u32 length)
>  	u32		i;
>  	int		nret   = 0;
>  	u32		iWordLength = 0;
> -	volatile union usb_reg_access *pBuf32 = (volatile union usb_reg_access *)pBuf;
> +	union usb_reg_access *pBuf32 = (union usb_reg_access *)pBuf;
>  
>  	/*------------------------------------------------------------*/
>  	/* Read Length */
> @@ -592,8 +592,8 @@ static int EP0_out_OverBytes(struct nbu2ss_udc *udc, u8 *pBuf, u32 length)
>  {
>  	u32		i;
>  	u32		iReadSize = 0;
> -	volatile union usb_reg_access  Temp32;
> -	volatile union usb_reg_access  *pBuf32 = (volatile union usb_reg_access *)pBuf;
> +	union usb_reg_access  Temp32;
> +	union usb_reg_access  *pBuf32 = (union usb_reg_access *)pBuf;
>  
>  	if ((0 < length) && (length < sizeof(u32))) {
>  		Temp32.dw = _nbu2ss_readl(&udc->p_regs->EP0_READ);
> @@ -613,7 +613,7 @@ static int EP0_in_PIO(struct nbu2ss_udc *udc, u8 *pBuf, u32 length)
>  	u32		iMaxLength   = EP0_PACKETSIZE;
>  	u32		iWordLength  = 0;
>  	u32		iWriteLength = 0;
> -	volatile union usb_reg_access  *pBuf32 = (volatile union usb_reg_access *)pBuf;
> +	union usb_reg_access  *pBuf32 = (union usb_reg_access *)pBuf;
>  
>  	/*------------------------------------------------------------*/
>  	/* Transfer Length */
> @@ -638,8 +638,8 @@ static int EP0_in_PIO(struct nbu2ss_udc *udc, u8 *pBuf, u32 length)
>  static int EP0_in_OverBytes(struct nbu2ss_udc *udc, u8 *pBuf, u32 iRemainSize)
>  {
>  	u32		i;
> -	volatile union usb_reg_access  Temp32;
> -	volatile union usb_reg_access  *pBuf32 = (volatile union usb_reg_access *)pBuf;
> +	union usb_reg_access  Temp32;
> +	union usb_reg_access  *pBuf32 = (union usb_reg_access *)pBuf;
>  
>  	if ((0 < iRemainSize) && (iRemainSize < sizeof(u32))) {
>  		for (i = 0 ; i < iRemainSize ; i++)
> @@ -900,8 +900,8 @@ static int _nbu2ss_epn_out_pio(
>  	u32		i;
>  	u32		data;
>  	u32		iWordLength;
> -	volatile union usb_reg_access	Temp32;
> -	volatile union usb_reg_access	*pBuf32;
> +	union usb_reg_access	Temp32;
> +	union usb_reg_access	*pBuf32;
>  	int		result = 0;
>  	struct fc_regs	*preg = udc->p_regs;
>  
> @@ -912,7 +912,7 @@ static int _nbu2ss_epn_out_pio(
>  		return 0;
>  
>  	pBuffer = (u8 *)req->req.buf;
> -	pBuf32 = (volatile union usb_reg_access *)(pBuffer + req->req.actual);
> +	pBuf32 = (union usb_reg_access *)(pBuffer + req->req.actual);
>  
>  	iWordLength = length / sizeof(u32);
>  	if (iWordLength > 0) {
> @@ -1123,8 +1123,8 @@ static int _nbu2ss_epn_in_pio(
>  	u32		i;
>  	u32		data;
>  	u32		iWordLength;
> -	volatile union usb_reg_access	Temp32;
> -	volatile union usb_reg_access	*pBuf32 = NULL;
> +	union usb_reg_access	Temp32;
> +	union usb_reg_access	*pBuf32 = NULL;
>  	int		result = 0;
>  	struct fc_regs	*preg = udc->p_regs;
>  
> @@ -1133,7 +1133,7 @@ static int _nbu2ss_epn_in_pio(
>  
>  	if (length > 0) {
>  		pBuffer = (u8 *)req->req.buf;
> -		pBuf32 = (volatile union usb_reg_access *)(pBuffer + req->req.actual);
> +		pBuf32 = (union usb_reg_access *)(pBuffer + req->req.actual);
>  
>  		iWordLength = length / sizeof(u32);
>  		if (iWordLength > 0) {
> diff --git a/drivers/staging/emxx_udc/emxx_udc.h b/drivers/staging/emxx_udc/emxx_udc.h
> index c1f98b3..7b2fcb6 100644
> --- a/drivers/staging/emxx_udc/emxx_udc.h
> +++ b/drivers/staging/emxx_udc/emxx_udc.h
> @@ -636,7 +636,7 @@ struct nbu2ss_udc {
>  };
>  
>  /* USB register access structure */
> -volatile union usb_reg_access {
> +union usb_reg_access {
>  	struct {
>  		unsigned char	DATA[4];
>  	} byte;
> -- 
> 1.9.1
> 
> -- 
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>