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Date: Thu, 18 Aug 2011 11:01:11 +0800
From: Yang Rui Rui <ruirui.r.yang@...to.com>
To: Michal Nazarewicz <mnazarewicz@...gle.com>
CC: Alan Stern <stern@...land.harvard.edu>,
Sergei Shtylyov <sshtylyov@...sta.com>,
Felipe Balbi <balbi@...com>,
Sebastian Andrzej Siewior <bigeasy@...utronix.de>,
Yang Ruirui R <ruirui.r.yang@...toenator.com>,
Greg Kroah-Hartman <gregkh@...e.de>,
"linux-usb@...r.kernel.org" <linux-usb@...r.kernel.org>,
"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCHv2] usb: gadget: get rid of USB_GADGET_DUALSPEED and USB_GADGET_SUPERSPEED
On 08/17/2011 11:33 PM, Michal Nazarewicz wrote:
> From: Michal Nazarewicz<mina86@...a86.com>
>
> This commit removes the use of USB_GADGET_DUALSPEED and
> USB_GADGET_SUPERSPEED Kconfig options. Those were selected
> by UDC drivers which supported respective speeds.
>
> However, since kernel now allows multiple UDC drivers to be
> compiled, the options in question may no longer reflect the
> state of all gadgets.
>
> For instance, if one driver that supports dual speed is selected
> and another that does not, the USB_GADGE_DUALSPEED will be set
> "for both".
>
> This commit replaces all the #ifdefs by a run-time checks made
> by calling gadget_is_dualspeed().
I did not see the include/linux/usb/gadget.h changes, did you have another patch?
There's CONFIG_USB_GADGET_DUALSPEED ifdefs in gadget_is_dualspeed function of the gadget.h
If so, I will get oops as before.
> ---
> drivers/usb/gadget/Kconfig | 30 -------------------------
> drivers/usb/gadget/composite.c | 9 +-------
> drivers/usb/gadget/file_storage.c | 4 ---
> drivers/usb/gadget/inode.c | 10 --------
> drivers/usb/gadget/printer.c | 43 ++++++-------------------------------
> drivers/usb/gadget/u_ether.c | 7 ------
> 6 files changed, 8 insertions(+), 95 deletions(-)
>
> Like before, this has been only compile-tested (make allmodconfig
> bzImage modules on x86_64).
>
> Compared to v1:
> * Removed unrelated whitespace changes
> * Removed the use of min() in usb_composite_probe()
>
> diff --git a/drivers/usb/gadget/Kconfig b/drivers/usb/gadget/Kconfig
> index 5a084b9..c60c167 100644
> --- a/drivers/usb/gadget/Kconfig
> +++ b/drivers/usb/gadget/Kconfig
> @@ -133,7 +133,6 @@ config USB_AT91
>
> config USB_ATMEL_USBA
> tristate "Atmel USBA"
> - select USB_GADGET_DUALSPEED
> depends on AVR32 || ARCH_AT91CAP9 || ARCH_AT91SAM9RL || ARCH_AT91SAM9G45
> help
> USBA is the integrated high-speed USB Device controller on
> @@ -142,7 +141,6 @@ config USB_ATMEL_USBA
> config USB_FSL_USB2
> tristate "Freescale Highspeed USB DR Peripheral Controller"
> depends on FSL_SOC || ARCH_MXC
> - select USB_GADGET_DUALSPEED
> select USB_FSL_MPH_DR_OF if OF
> help
> Some of Freescale PowerPC processors have a High Speed
> @@ -158,7 +156,6 @@ config USB_FSL_USB2
> config USB_FUSB300
> tristate "Faraday FUSB300 USB Peripheral Controller"
> depends on !PHYS_ADDR_T_64BIT
> - select USB_GADGET_DUALSPEED
> help
> Faraday usb device controller FUSB300 driver
>
> @@ -206,7 +203,6 @@ config USB_PXA25X_SMALL
>
> config USB_R8A66597
> tristate "Renesas R8A66597 USB Peripheral Controller"
> - select USB_GADGET_DUALSPEED
> help
> R8A66597 is a discrete USB host and peripheral controller chip that
> supports both full and high speed USB 2.0 data transfers.
> @@ -220,7 +216,6 @@ config USB_RENESAS_USBHS_UDC
> tristate 'Renesas USBHS controller'
> depends on SUPERH || ARCH_SHMOBILE
> depends on USB_RENESAS_USBHS
> - select USB_GADGET_DUALSPEED
> help
> Renesas USBHS is a discrete USB host and peripheral controller chip
> that supports both full and high speed USB 2.0 data transfers.
> @@ -249,7 +244,6 @@ config USB_S3C_HSOTG
> tristate "S3C HS/OtG USB Device controller"
> depends on S3C_DEV_USB_HSOTG
> select USB_GADGET_S3C_HSOTG_PIO
> - select USB_GADGET_DUALSPEED
> help
> The Samsung S3C64XX USB2.0 high-speed gadget controller
> integrated into the S3C64XX series SoC.
> @@ -287,7 +281,6 @@ config USB_S3C2410_DEBUG
> config USB_S3C_HSUDC
> tristate "S3C2416, S3C2443 and S3C2450 USB Device Controller"
> depends on ARCH_S3C2410
> - select USB_GADGET_DUALSPEED
> help
> Samsung's S3C2416, S3C2443 and S3C2450 is an ARM9 based SoC
> integrated with dual speed USB 2.0 device controller. It has
> @@ -298,7 +291,6 @@ config USB_S3C_HSUDC
> config USB_PXA_U2O
> tristate "PXA9xx Processor USB2.0 controller"
> depends on ARCH_MMP
> - select USB_GADGET_DUALSPEED
> help
> PXA9xx Processor series include a high speed USB2.0 device
> controller, which support high speed and full speed USB peripheral.
> @@ -311,14 +303,12 @@ config USB_PXA_U2O
> config USB_GADGET_MUSB_HDRC
> tristate "Inventra HDRC USB Peripheral (TI, ADI, ...)"
> depends on USB_MUSB_HDRC
> - select USB_GADGET_DUALSPEED
> help
> This OTG-capable silicon IP is used in dual designs including
> the TI DaVinci, OMAP 243x, OMAP 343x, TUSB 6010, and ADI Blackfin
>
> config USB_M66592
> tristate "Renesas M66592 USB Peripheral Controller"
> - select USB_GADGET_DUALSPEED
> help
> M66592 is a discrete USB peripheral controller chip that
> supports both full and high speed USB 2.0 data transfers.
> @@ -335,7 +325,6 @@ config USB_M66592
> config USB_AMD5536UDC
> tristate "AMD5536 UDC"
> depends on PCI
> - select USB_GADGET_DUALSPEED
> help
> The AMD5536 UDC is part of the AMD Geode CS5536, an x86 southbridge.
> It is a USB Highspeed DMA capable USB device controller. Beside ep0
> @@ -363,7 +352,6 @@ config USB_FSL_QE
> config USB_CI13XXX_PCI
> tristate "MIPS USB CI13xxx PCI UDC"
> depends on PCI
> - select USB_GADGET_DUALSPEED
> help
> MIPS USB IP core family device controller
> Currently it only supports IP part number CI13412
> @@ -374,7 +362,6 @@ config USB_CI13XXX_PCI
>
> config USB_NET2272
> tristate "PLX NET2272"
> - select USB_GADGET_DUALSPEED
> help
> PLX NET2272 is a USB peripheral controller which supports
> both full and high speed USB 2.0 data transfers.
> @@ -398,7 +385,6 @@ config USB_NET2272_DMA
> config USB_NET2280
> tristate "NetChip 228x"
> depends on PCI
> - select USB_GADGET_DUALSPEED
> help
> NetChip 2280 / 2282 is a PCI based USB peripheral controller which
> supports both full and high speed USB 2.0 data transfers.
> @@ -429,7 +415,6 @@ config USB_LANGWELL
> tristate "Intel Langwell USB Device Controller"
> depends on PCI
> depends on !PHYS_ADDR_T_64BIT
> - select USB_GADGET_DUALSPEED
> help
> Intel Langwell USB Device Controller is a High-Speed USB
> On-The-Go device controller.
> @@ -444,7 +429,6 @@ config USB_LANGWELL
> config USB_EG20T
> tristate "Intel EG20T PCH/OKI SEMICONDUCTOR ML7213 IOH UDC"
> depends on PCI
> - select USB_GADGET_DUALSPEED
> help
> This is a USB device driver for EG20T PCH.
> EG20T PCH is the platform controller hub that is used in Intel's
> @@ -466,7 +450,6 @@ config USB_EG20T
> config USB_CI13XXX_MSM
> tristate "MIPS USB CI13xxx for MSM"
> depends on ARCH_MSM
> - select USB_GADGET_DUALSPEED
> select USB_MSM_OTG
> help
> MSM SoC has chipidea USB controller. This driver uses
> @@ -487,8 +470,6 @@ config USB_CI13XXX_MSM
> config USB_DUMMY_HCD
> tristate "Dummy HCD (DEVELOPMENT)"
> depends on USB=y || (USB=m&& USB_GADGET=m)
> - select USB_GADGET_DUALSPEED
> - select USB_GADGET_SUPERSPEED
> help
> This host controller driver emulates USB, looping all data transfer
> requests back to a USB "gadget driver" in the same host. The host
> @@ -513,17 +494,6 @@ config USB_DUMMY_HCD
>
> endchoice
>
> -# Selected by UDC drivers that support high-speed operation.
> -config USB_GADGET_DUALSPEED
> - bool
> - depends on USB_GADGET
> -
> -# Selected by UDC drivers that support super-speed opperation
> -config USB_GADGET_SUPERSPEED
> - bool
> - depends on USB_GADGET
> - depends on USB_GADGET_DUALSPEED
> -
> #
> # USB Gadget Drivers
> #
> diff --git a/drivers/usb/gadget/composite.c b/drivers/usb/gadget/composite.c
> index 5a3461e..c5249b3 100644
> --- a/drivers/usb/gadget/composite.c
> +++ b/drivers/usb/gadget/composite.c
> @@ -1559,12 +1559,6 @@ composite_resume(struct usb_gadget *gadget)
> /*-------------------------------------------------------------------------*/
>
> static struct usb_gadget_driver composite_driver = {
> -#ifdef CONFIG_USB_GADGET_SUPERSPEED
> - .speed = USB_SPEED_SUPER,
> -#else
> - .speed = USB_SPEED_HIGH,
> -#endif
> -
> .unbind = composite_unbind,
>
> .setup = composite_setup,
> @@ -1609,8 +1603,7 @@ int usb_composite_probe(struct usb_composite_driver *driver,
> driver->iProduct = driver->name;
> composite_driver.function = (char *) driver->name;
> composite_driver.driver.name = driver->name;
> - composite_driver.speed = min((u8)composite_driver.speed,
> - (u8)driver->max_speed);
> + composite_driver.speed = driver->max_speed;
This does not works, many drivers will check the driver->speed, ie in musg_gadget.c
static int musb_gadget_start(struct usb_gadget *g,
struct usb_gadget_driver *driver)
{
struct musb *musb = gadget_to_musb(g);
unsigned long flags;
int retval = -EINVAL;
if (driver->speed != USB_SPEED_HIGH)
goto err0;
[snip]
> composite = driver;
> composite_gadget_bind = bind;
>
> diff --git a/drivers/usb/gadget/file_storage.c b/drivers/usb/gadget/file_storage.c
> index cf875be..61ed4ec 100644
> --- a/drivers/usb/gadget/file_storage.c
> +++ b/drivers/usb/gadget/file_storage.c
> @@ -3562,11 +3562,7 @@ static void fsg_resume(struct usb_gadget *gadget)
> /*-------------------------------------------------------------------------*/
>
> static struct usb_gadget_driver fsg_driver = {
> -#ifdef CONFIG_USB_GADGET_DUALSPEED
> .speed = USB_SPEED_HIGH,
> -#else
> - .speed = USB_SPEED_FULL,
> -#endif
> .function = (char *) fsg_string_product,
> .unbind = fsg_unbind,
> .disconnect = fsg_disconnect,
> diff --git a/drivers/usb/gadget/inode.c b/drivers/usb/gadget/inode.c
> index 1b24099..dddb3e4 100644
> --- a/drivers/usb/gadget/inode.c
> +++ b/drivers/usb/gadget/inode.c
> @@ -837,7 +837,6 @@ ep_config (struct file *fd, const char __user *buf, size_t len, loff_t *ptr)
> if (value == 0)
> data->state = STATE_EP_ENABLED;
> break;
> -#ifdef CONFIG_USB_GADGET_DUALSPEED
> case USB_SPEED_HIGH:
> /* fails if caller didn't provide that descriptor... */
> ep->desc =&data->hs_desc;
> @@ -845,7 +844,6 @@ ep_config (struct file *fd, const char __user *buf, size_t len, loff_t *ptr)
> if (value == 0)
> data->state = STATE_EP_ENABLED;
> break;
> -#endif
> default:
> DBG(data->dev, "unconnected, %s init abandoned\n",
> data->name);
> @@ -1331,7 +1329,6 @@ static const struct file_operations ep0_io_operations = {
> * Unrecognized ep0 requests may be handled in user space.
> */
>
> -#ifdef CONFIG_USB_GADGET_DUALSPEED
> static void make_qualifier (struct dev_data *dev)
> {
> struct usb_qualifier_descriptor qual;
> @@ -1354,7 +1351,6 @@ static void make_qualifier (struct dev_data *dev)
>
> memcpy (dev->rbuf,&qual, sizeof qual);
> }
> -#endif
>
> static int
> config_buf (struct dev_data *dev, u8 type, unsigned index)
> @@ -1434,7 +1430,6 @@ gadgetfs_setup (struct usb_gadget *gadget, const struct usb_ctrlrequest *ctrl)
> dev->dev->bMaxPacketSize0 = dev->gadget->ep0->maxpacket;
> req->buf = dev->dev;
> break;
> -#ifdef CONFIG_USB_GADGET_DUALSPEED
> case USB_DT_DEVICE_QUALIFIER:
> if (!dev->hs_config)
> break;
> @@ -1444,7 +1439,6 @@ gadgetfs_setup (struct usb_gadget *gadget, const struct usb_ctrlrequest *ctrl)
> break;
> case USB_DT_OTHER_SPEED_CONFIG:
> // FALLTHROUGH
> -#endif
> case USB_DT_CONFIG:
> value = config_buf (dev,
> w_value>> 8,
> @@ -1773,11 +1767,7 @@ gadgetfs_suspend (struct usb_gadget *gadget)
> }
>
> static struct usb_gadget_driver gadgetfs_driver = {
> -#ifdef CONFIG_USB_GADGET_DUALSPEED
> .speed = USB_SPEED_HIGH,
> -#else
> - .speed = USB_SPEED_FULL,
> -#endif
> .function = (char *) driver_desc,
> .unbind = gadgetfs_unbind,
> .setup = gadgetfs_setup,
> diff --git a/drivers/usb/gadget/printer.c b/drivers/usb/gadget/printer.c
> index a341dde..901b7ba 100644
> --- a/drivers/usb/gadget/printer.c
> +++ b/drivers/usb/gadget/printer.c
> @@ -164,12 +164,6 @@ module_param(qlen, uint, S_IRUGO|S_IWUSR);
>
> #define QLEN qlen
>
> -#ifdef CONFIG_USB_GADGET_DUALSPEED
> -#define DEVSPEED USB_SPEED_HIGH
> -#else /* full speed (low speed doesn't do bulk) */
> -#define DEVSPEED USB_SPEED_FULL
> -#endif
> -
> /*-------------------------------------------------------------------------*/
>
> #define xprintk(d, level, fmt, args...) \
> @@ -288,8 +282,6 @@ static const struct usb_descriptor_header *fs_printer_function [11] = {
> NULL
> };
>
> -#ifdef CONFIG_USB_GADGET_DUALSPEED
> -
> /*
> * usb 2.0 devices need to expose both high speed and full speed
> * descriptors, unless they only run at full speed.
> @@ -328,13 +320,6 @@ static const struct usb_descriptor_header *hs_printer_function [11] = {
> /* maxpacket and other transfer characteristics vary by speed. */
> #define ep_desc(g, hs, fs) (((g)->speed == USB_SPEED_HIGH)?(hs):(fs))
>
> -#else
> -
> -/* if there's no high speed support, maxpacket doesn't change. */
> -#define ep_desc(g, hs, fs) (((void)(g)), (fs))
> -
> -#endif /* !CONFIG_USB_GADGET_DUALSPEED */
> -
> /*-------------------------------------------------------------------------*/
>
> /* descriptors that are built on-demand */
> @@ -979,9 +964,7 @@ printer_set_config(struct printer_dev *dev, unsigned number)
>
> switch (gadget->speed) {
> case USB_SPEED_FULL: speed = "full"; break;
> -#ifdef CONFIG_USB_GADGET_DUALSPEED
> case USB_SPEED_HIGH: speed = "high"; break;
> -#endif
> default: speed = "?"; break;
> }
>
> @@ -998,23 +981,15 @@ config_buf(enum usb_device_speed speed, u8 *buf, u8 type, unsigned index,
> {
> int len;
> const struct usb_descriptor_header **function;
> -#ifdef CONFIG_USB_GADGET_DUALSPEED
> int hs = (speed == USB_SPEED_HIGH);
>
> + if (index>= device_desc.bNumConfigurations)
> + return -EINVAL;
> +
> if (type == USB_DT_OTHER_SPEED_CONFIG)
> hs = !hs;
>
> - if (hs) {
> - function = hs_printer_function;
> - } else {
> - function = fs_printer_function;
> - }
> -#else
> - function = fs_printer_function;
> -#endif
> -
> - if (index>= device_desc.bNumConfigurations)
> - return -EINVAL;
> + function = hs ? hs_printer_function : fs_printer_function;
>
> /* for now, don't advertise srp-only devices */
> if (!is_otg)
> @@ -1156,9 +1131,8 @@ printer_setup(struct usb_gadget *gadget, const struct usb_ctrlrequest *ctrl)
> value = min(wLength, (u16) sizeof device_desc);
> memcpy(req->buf,&device_desc, value);
> break;
> -#ifdef CONFIG_USB_GADGET_DUALSPEED
> case USB_DT_DEVICE_QUALIFIER:
> - if (!gadget->is_dualspeed)
> + if (!gadget_is_dualspeed(gadget))
> break;
> /*
> * assumes ep0 uses the same value for both
> @@ -1172,10 +1146,9 @@ printer_setup(struct usb_gadget *gadget, const struct usb_ctrlrequest *ctrl)
> break;
>
> case USB_DT_OTHER_SPEED_CONFIG:
> - if (!gadget->is_dualspeed)
> + if (!gadget_is_dualspeed(gadget))
> break;
> /* FALLTHROUGH */
> -#endif /* CONFIG_USB_GADGET_DUALSPEED */
> case USB_DT_CONFIG:
> value = config_buf(gadget->speed, req->buf,
> wValue>> 8,
> @@ -1460,11 +1433,9 @@ autoconf_fail:
> goto autoconf_fail;
> out_ep->driver_data = out_ep; /* claim */
>
> -#ifdef CONFIG_USB_GADGET_DUALSPEED
> /* assumes that all endpoints are dual-speed */
> hs_ep_in_desc.bEndpointAddress = fs_ep_in_desc.bEndpointAddress;
> hs_ep_out_desc.bEndpointAddress = fs_ep_out_desc.bEndpointAddress;
> -#endif /* DUALSPEED */
>
> usb_gadget_set_selfpowered(gadget);
>
> @@ -1552,7 +1523,7 @@ fail:
> /*-------------------------------------------------------------------------*/
>
> static struct usb_gadget_driver printer_driver = {
> - .speed = DEVSPEED,
> + .speed = USB_SPEED_HIGH,
>
> .function = (char *) driver_desc,
> .unbind = printer_unbind,
> diff --git a/drivers/usb/gadget/u_ether.c b/drivers/usb/gadget/u_ether.c
> index dfed4c1..8642abb 100644
> --- a/drivers/usb/gadget/u_ether.c
> +++ b/drivers/usb/gadget/u_ether.c
> @@ -92,17 +92,10 @@ struct eth_dev {
>
> #define DEFAULT_QLEN 2 /* double buffering by default */
>
> -
> -#ifdef CONFIG_USB_GADGET_DUALSPEED
> -
> static unsigned qmult = 5;
> module_param(qmult, uint, S_IRUGO|S_IWUSR);
> MODULE_PARM_DESC(qmult, "queue length multiplier at high/super speed");
>
> -#else /* full speed (low speed doesn't do bulk) */
> -#define qmult 1
> -#endif
> -
> /* for dual-speed hardware, use deeper queues at high/super speed */
> static inline int qlen(struct usb_gadget *gadget)
> {
> --
> 1.7.3.1
>
--
Thanks
Yang Ruirui
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