2015-06-06 01:33:04

by Vaishali Thakkar

[permalink] [raw]
Subject: [PATCH] usb: gadget: Convert use of __constant_cpu_to_le16 to cpu_to_le16

In big endian cases, macro cpu_to_le16 unfolds to __swab16 which
provides special case for constants. In little endian cases,
__constant_cpu_to_le16 and cpu_to_le16 expand directly to the
same expression. So, replace __constant_cpu_to_le16 with
cpu_to_le16 with the goal of getting rid of the definition of
__constant_cpu_to_le16 completely.

The semantic patch that performs this transformation is as follows:

@@expression x;@@

- __constant_cpu_to_le16(x)
+ cpu_to_le16(x)

Signed-off-by: Vaishali Thakkar <[email protected]>
---
drivers/usb/gadget/legacy/audio.c | 6 +++---
drivers/usb/gadget/legacy/dbgp.c | 10 +++++-----
drivers/usb/gadget/legacy/gmidi.c | 6 +++---
drivers/usb/gadget/legacy/nokia.c | 6 +++---
4 files changed, 14 insertions(+), 14 deletions(-)

diff --git a/drivers/usb/gadget/legacy/audio.c b/drivers/usb/gadget/legacy/audio.c
index f289caf..b8095bf 100644
--- a/drivers/usb/gadget/legacy/audio.c
+++ b/drivers/usb/gadget/legacy/audio.c
@@ -124,7 +124,7 @@ static struct usb_device_descriptor device_desc = {
.bLength = sizeof device_desc,
.bDescriptorType = USB_DT_DEVICE,

- .bcdUSB = __constant_cpu_to_le16(0x200),
+ .bcdUSB = cpu_to_le16(0x200),

#ifdef CONFIG_GADGET_UAC1
.bDeviceClass = USB_CLASS_PER_INTERFACE,
@@ -141,8 +141,8 @@ static struct usb_device_descriptor device_desc = {
* we support. (As does bNumConfigurations.) These values can
* also be overridden by module parameters.
*/
- .idVendor = __constant_cpu_to_le16(AUDIO_VENDOR_NUM),
- .idProduct = __constant_cpu_to_le16(AUDIO_PRODUCT_NUM),
+ .idVendor = cpu_to_le16(AUDIO_VENDOR_NUM),
+ .idProduct = cpu_to_le16(AUDIO_PRODUCT_NUM),
/* .bcdDevice = f(hardware) */
/* .iManufacturer = DYNAMIC */
/* .iProduct = DYNAMIC */
diff --git a/drivers/usb/gadget/legacy/dbgp.c b/drivers/usb/gadget/legacy/dbgp.c
index 204b10b..5231a32 100644
--- a/drivers/usb/gadget/legacy/dbgp.c
+++ b/drivers/usb/gadget/legacy/dbgp.c
@@ -35,10 +35,10 @@ static struct dbgp {
static struct usb_device_descriptor device_desc = {
.bLength = sizeof device_desc,
.bDescriptorType = USB_DT_DEVICE,
- .bcdUSB = __constant_cpu_to_le16(0x0200),
+ .bcdUSB = cpu_to_le16(0x0200),
.bDeviceClass = USB_CLASS_VENDOR_SPEC,
- .idVendor = __constant_cpu_to_le16(DRIVER_VENDOR_ID),
- .idProduct = __constant_cpu_to_le16(DRIVER_PRODUCT_ID),
+ .idVendor = cpu_to_le16(DRIVER_VENDOR_ID),
+ .idProduct = cpu_to_le16(DRIVER_PRODUCT_ID),
.bNumConfigurations = 1,
};

@@ -251,7 +251,7 @@ static int dbgp_configure_endpoints(struct usb_gadget *gadget)

dbgp.i_ep->driver_data = gadget;
i_desc.wMaxPacketSize =
- __constant_cpu_to_le16(USB_DEBUG_MAX_PACKET_SIZE);
+ cpu_to_le16(USB_DEBUG_MAX_PACKET_SIZE);

dbgp.o_ep = usb_ep_autoconfig(gadget, &o_desc);
if (!dbgp.o_ep) {
@@ -262,7 +262,7 @@ static int dbgp_configure_endpoints(struct usb_gadget *gadget)

dbgp.o_ep->driver_data = gadget;
o_desc.wMaxPacketSize =
- __constant_cpu_to_le16(USB_DEBUG_MAX_PACKET_SIZE);
+ cpu_to_le16(USB_DEBUG_MAX_PACKET_SIZE);

dbg_desc.bDebugInEndpoint = i_desc.bEndpointAddress;
dbg_desc.bDebugOutEndpoint = o_desc.bEndpointAddress;
diff --git a/drivers/usb/gadget/legacy/gmidi.c b/drivers/usb/gadget/legacy/gmidi.c
index da19c48..650568d 100644
--- a/drivers/usb/gadget/legacy/gmidi.c
+++ b/drivers/usb/gadget/legacy/gmidi.c
@@ -88,10 +88,10 @@ MODULE_PARM_DESC(out_ports, "Number of MIDI output ports");
static struct usb_device_descriptor device_desc = {
.bLength = USB_DT_DEVICE_SIZE,
.bDescriptorType = USB_DT_DEVICE,
- .bcdUSB = __constant_cpu_to_le16(0x0200),
+ .bcdUSB = cpu_to_le16(0x0200),
.bDeviceClass = USB_CLASS_PER_INTERFACE,
- .idVendor = __constant_cpu_to_le16(DRIVER_VENDOR_NUM),
- .idProduct = __constant_cpu_to_le16(DRIVER_PRODUCT_NUM),
+ .idVendor = cpu_to_le16(DRIVER_VENDOR_NUM),
+ .idProduct = cpu_to_le16(DRIVER_PRODUCT_NUM),
/* .iManufacturer = DYNAMIC */
/* .iProduct = DYNAMIC */
.bNumConfigurations = 1,
diff --git a/drivers/usb/gadget/legacy/nokia.c b/drivers/usb/gadget/legacy/nokia.c
index 4bb498a..6757131 100644
--- a/drivers/usb/gadget/legacy/nokia.c
+++ b/drivers/usb/gadget/legacy/nokia.c
@@ -66,10 +66,10 @@ static struct usb_gadget_strings *dev_strings[] = {
static struct usb_device_descriptor device_desc = {
.bLength = USB_DT_DEVICE_SIZE,
.bDescriptorType = USB_DT_DEVICE,
- .bcdUSB = __constant_cpu_to_le16(0x0200),
+ .bcdUSB = cpu_to_le16(0x0200),
.bDeviceClass = USB_CLASS_COMM,
- .idVendor = __constant_cpu_to_le16(NOKIA_VENDOR_ID),
- .idProduct = __constant_cpu_to_le16(NOKIA_PRODUCT_ID),
+ .idVendor = cpu_to_le16(NOKIA_VENDOR_ID),
+ .idProduct = cpu_to_le16(NOKIA_PRODUCT_ID),
.bcdDevice = cpu_to_le16(NOKIA_VERSION_NUM),
/* .iManufacturer = DYNAMIC */
/* .iProduct = DYNAMIC */
--
1.9.1


2015-07-27 06:14:12

by Vaishali Thakkar

[permalink] [raw]
Subject: Re: [PATCH] usb: gadget: Convert use of __constant_cpu_to_le16 to cpu_to_le16

On Sat, Jun 6, 2015 at 7:02 AM, Vaishali Thakkar <[email protected]> wrote:
> In big endian cases, macro cpu_to_le16 unfolds to __swab16 which
> provides special case for constants. In little endian cases,
> __constant_cpu_to_le16 and cpu_to_le16 expand directly to the
> same expression. So, replace __constant_cpu_to_le16 with
> cpu_to_le16 with the goal of getting rid of the definition of
> __constant_cpu_to_le16 completely.
>
> The semantic patch that performs this transformation is as follows:
>
> @@expression x;@@
>
> - __constant_cpu_to_le16(x)
> + cpu_to_le16(x)

Hello

This is just a friendly reminder. As this patch was sent before almost 50 days
with the aim of removing constant_<foo> definitions completely
and not yet applied, is it missed?? Do I need to resend this patch?

Thank You.

> Signed-off-by: Vaishali Thakkar <[email protected]>
> ---
> drivers/usb/gadget/legacy/audio.c | 6 +++---
> drivers/usb/gadget/legacy/dbgp.c | 10 +++++-----
> drivers/usb/gadget/legacy/gmidi.c | 6 +++---
> drivers/usb/gadget/legacy/nokia.c | 6 +++---
> 4 files changed, 14 insertions(+), 14 deletions(-)
>
> diff --git a/drivers/usb/gadget/legacy/audio.c b/drivers/usb/gadget/legacy/audio.c
> index f289caf..b8095bf 100644
> --- a/drivers/usb/gadget/legacy/audio.c
> +++ b/drivers/usb/gadget/legacy/audio.c
> @@ -124,7 +124,7 @@ static struct usb_device_descriptor device_desc = {
> .bLength = sizeof device_desc,
> .bDescriptorType = USB_DT_DEVICE,
>
> - .bcdUSB = __constant_cpu_to_le16(0x200),
> + .bcdUSB = cpu_to_le16(0x200),
>
> #ifdef CONFIG_GADGET_UAC1
> .bDeviceClass = USB_CLASS_PER_INTERFACE,
> @@ -141,8 +141,8 @@ static struct usb_device_descriptor device_desc = {
> * we support. (As does bNumConfigurations.) These values can
> * also be overridden by module parameters.
> */
> - .idVendor = __constant_cpu_to_le16(AUDIO_VENDOR_NUM),
> - .idProduct = __constant_cpu_to_le16(AUDIO_PRODUCT_NUM),
> + .idVendor = cpu_to_le16(AUDIO_VENDOR_NUM),
> + .idProduct = cpu_to_le16(AUDIO_PRODUCT_NUM),
> /* .bcdDevice = f(hardware) */
> /* .iManufacturer = DYNAMIC */
> /* .iProduct = DYNAMIC */
> diff --git a/drivers/usb/gadget/legacy/dbgp.c b/drivers/usb/gadget/legacy/dbgp.c
> index 204b10b..5231a32 100644
> --- a/drivers/usb/gadget/legacy/dbgp.c
> +++ b/drivers/usb/gadget/legacy/dbgp.c
> @@ -35,10 +35,10 @@ static struct dbgp {
> static struct usb_device_descriptor device_desc = {
> .bLength = sizeof device_desc,
> .bDescriptorType = USB_DT_DEVICE,
> - .bcdUSB = __constant_cpu_to_le16(0x0200),
> + .bcdUSB = cpu_to_le16(0x0200),
> .bDeviceClass = USB_CLASS_VENDOR_SPEC,
> - .idVendor = __constant_cpu_to_le16(DRIVER_VENDOR_ID),
> - .idProduct = __constant_cpu_to_le16(DRIVER_PRODUCT_ID),
> + .idVendor = cpu_to_le16(DRIVER_VENDOR_ID),
> + .idProduct = cpu_to_le16(DRIVER_PRODUCT_ID),
> .bNumConfigurations = 1,
> };
>
> @@ -251,7 +251,7 @@ static int dbgp_configure_endpoints(struct usb_gadget *gadget)
>
> dbgp.i_ep->driver_data = gadget;
> i_desc.wMaxPacketSize =
> - __constant_cpu_to_le16(USB_DEBUG_MAX_PACKET_SIZE);
> + cpu_to_le16(USB_DEBUG_MAX_PACKET_SIZE);
>
> dbgp.o_ep = usb_ep_autoconfig(gadget, &o_desc);
> if (!dbgp.o_ep) {
> @@ -262,7 +262,7 @@ static int dbgp_configure_endpoints(struct usb_gadget *gadget)
>
> dbgp.o_ep->driver_data = gadget;
> o_desc.wMaxPacketSize =
> - __constant_cpu_to_le16(USB_DEBUG_MAX_PACKET_SIZE);
> + cpu_to_le16(USB_DEBUG_MAX_PACKET_SIZE);
>
> dbg_desc.bDebugInEndpoint = i_desc.bEndpointAddress;
> dbg_desc.bDebugOutEndpoint = o_desc.bEndpointAddress;
> diff --git a/drivers/usb/gadget/legacy/gmidi.c b/drivers/usb/gadget/legacy/gmidi.c
> index da19c48..650568d 100644
> --- a/drivers/usb/gadget/legacy/gmidi.c
> +++ b/drivers/usb/gadget/legacy/gmidi.c
> @@ -88,10 +88,10 @@ MODULE_PARM_DESC(out_ports, "Number of MIDI output ports");
> static struct usb_device_descriptor device_desc = {
> .bLength = USB_DT_DEVICE_SIZE,
> .bDescriptorType = USB_DT_DEVICE,
> - .bcdUSB = __constant_cpu_to_le16(0x0200),
> + .bcdUSB = cpu_to_le16(0x0200),
> .bDeviceClass = USB_CLASS_PER_INTERFACE,
> - .idVendor = __constant_cpu_to_le16(DRIVER_VENDOR_NUM),
> - .idProduct = __constant_cpu_to_le16(DRIVER_PRODUCT_NUM),
> + .idVendor = cpu_to_le16(DRIVER_VENDOR_NUM),
> + .idProduct = cpu_to_le16(DRIVER_PRODUCT_NUM),
> /* .iManufacturer = DYNAMIC */
> /* .iProduct = DYNAMIC */
> .bNumConfigurations = 1,
> diff --git a/drivers/usb/gadget/legacy/nokia.c b/drivers/usb/gadget/legacy/nokia.c
> index 4bb498a..6757131 100644
> --- a/drivers/usb/gadget/legacy/nokia.c
> +++ b/drivers/usb/gadget/legacy/nokia.c
> @@ -66,10 +66,10 @@ static struct usb_gadget_strings *dev_strings[] = {
> static struct usb_device_descriptor device_desc = {
> .bLength = USB_DT_DEVICE_SIZE,
> .bDescriptorType = USB_DT_DEVICE,
> - .bcdUSB = __constant_cpu_to_le16(0x0200),
> + .bcdUSB = cpu_to_le16(0x0200),
> .bDeviceClass = USB_CLASS_COMM,
> - .idVendor = __constant_cpu_to_le16(NOKIA_VENDOR_ID),
> - .idProduct = __constant_cpu_to_le16(NOKIA_PRODUCT_ID),
> + .idVendor = cpu_to_le16(NOKIA_VENDOR_ID),
> + .idProduct = cpu_to_le16(NOKIA_PRODUCT_ID),
> .bcdDevice = cpu_to_le16(NOKIA_VERSION_NUM),
> /* .iManufacturer = DYNAMIC */
> /* .iProduct = DYNAMIC */
> --
> 1.9.1
>



--
Vaishali

2015-07-29 15:24:10

by Felipe Balbi

[permalink] [raw]
Subject: Re: [PATCH] usb: gadget: Convert use of __constant_cpu_to_le16 to cpu_to_le16

On Mon, Jul 27, 2015 at 11:44:08AM +0530, Vaishali Thakkar wrote:
> On Sat, Jun 6, 2015 at 7:02 AM, Vaishali Thakkar <[email protected]> wrote:
> > In big endian cases, macro cpu_to_le16 unfolds to __swab16 which
> > provides special case for constants. In little endian cases,
> > __constant_cpu_to_le16 and cpu_to_le16 expand directly to the
> > same expression. So, replace __constant_cpu_to_le16 with
> > cpu_to_le16 with the goal of getting rid of the definition of
> > __constant_cpu_to_le16 completely.
> >
> > The semantic patch that performs this transformation is as follows:
> >
> > @@expression x;@@
> >
> > - __constant_cpu_to_le16(x)
> > + cpu_to_le16(x)
>
> Hello
>
> This is just a friendly reminder. As this patch was sent before almost 50 days
> with the aim of removing constant_<foo> definitions completely
> and not yet applied, is it missed?? Do I need to resend this patch?

you should have received my automated email now.

--
balbi


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