From ea0e627623e236e4cbec9f44b4a755bc4a4b852d Mon Sep 17 00:00:00 2001 From: Andrzej Pietrasiewicz Date: Mon, 11 Jun 2012 11:13:15 +0200 Subject: usb: gadget: add multiple definition guards If f_fs.c and u_serial.c are combined together using #include, which has been a common practice so far, the pr_vdebug macro is defined multiple times. Define it only once. Acked-by: Randy Dunlap Signed-off-by: Andrzej Pietrasiewicz Signed-off-by: Kyungmin Park Signed-off-by: Felipe Balbi --- drivers/usb/gadget/f_fs.c | 4 ++++ drivers/usb/gadget/u_serial.c | 4 ++++ 2 files changed, 8 insertions(+) (limited to 'drivers/usb/gadget') diff --git a/drivers/usb/gadget/f_fs.c b/drivers/usb/gadget/f_fs.c index 8adc79d1b40..829aba75a6d 100644 --- a/drivers/usb/gadget/f_fs.c +++ b/drivers/usb/gadget/f_fs.c @@ -34,11 +34,15 @@ /* Debugging ****************************************************************/ #ifdef VERBOSE_DEBUG +#ifndef pr_vdebug # define pr_vdebug pr_debug +#endif /* pr_vdebug */ # define ffs_dump_mem(prefix, ptr, len) \ print_hex_dump_bytes(pr_fmt(prefix ": "), DUMP_PREFIX_NONE, ptr, len) #else +#ifndef pr_vdebug # define pr_vdebug(...) do { } while (0) +#endif /* pr_vdebug */ # define ffs_dump_mem(prefix, ptr, len) do { } while (0) #endif /* VERBOSE_DEBUG */ diff --git a/drivers/usb/gadget/u_serial.c b/drivers/usb/gadget/u_serial.c index 5b3f5fffea9..da6d479ff9a 100644 --- a/drivers/usb/gadget/u_serial.c +++ b/drivers/usb/gadget/u_serial.c @@ -132,11 +132,15 @@ static unsigned n_ports; #ifdef VERBOSE_DEBUG +#ifndef pr_vdebug #define pr_vdebug(fmt, arg...) \ pr_debug(fmt, ##arg) +#endif /* pr_vdebug */ #else +#ifndef pr_vdebig #define pr_vdebug(fmt, arg...) \ ({ if (0) pr_debug(fmt, ##arg); }) +#endif /* pr_vdebug */ #endif /*-------------------------------------------------------------------------*/ -- cgit v1.2.3-70-g09d2 From c8e6507bdec67f1c50390a69a14568c5115cc658 Mon Sep 17 00:00:00 2001 From: Julia Lawall Date: Tue, 14 Aug 2012 08:47:34 +0200 Subject: usb: gadget: s3c-hsotg.c: fix error return code Convert a 0 error return code to a negative one, as returned elsewhere in the function. A simplified version of the semantic match that finds this problem is as follows: (http://coccinelle.lip6.fr/) // @@ identifier ret; expression e,e1,e2,e3,e4,x; @@ ( if (\(ret != 0\|ret < 0\) || ...) { ... return ...; } | ret = 0 ) ... when != ret = e1 *x = \(kmalloc\|kzalloc\|kcalloc\|devm_kzalloc\|ioremap\|ioremap_nocache\|devm_ioremap\|devm_ioremap_nocache\)(...); ... when != x = e2 when != ret = e3 *if (x == NULL || ...) { ... when != ret = e4 * return ret; } // Signed-off-by: Julia Lawall Signed-off-by: Felipe Balbi --- drivers/usb/gadget/s3c-hsotg.c | 3 +++ 1 file changed, 3 insertions(+) (limited to 'drivers/usb/gadget') diff --git a/drivers/usb/gadget/s3c-hsotg.c b/drivers/usb/gadget/s3c-hsotg.c index b13e0bb5f5b..0bb617e1dda 100644 --- a/drivers/usb/gadget/s3c-hsotg.c +++ b/drivers/usb/gadget/s3c-hsotg.c @@ -3599,6 +3599,7 @@ static int __devinit s3c_hsotg_probe(struct platform_device *pdev) if (hsotg->num_of_eps == 0) { dev_err(dev, "wrong number of EPs (zero)\n"); + ret = -EINVAL; goto err_supplies; } @@ -3606,6 +3607,7 @@ static int __devinit s3c_hsotg_probe(struct platform_device *pdev) GFP_KERNEL); if (!eps) { dev_err(dev, "cannot get memory\n"); + ret = -ENOMEM; goto err_supplies; } @@ -3622,6 +3624,7 @@ static int __devinit s3c_hsotg_probe(struct platform_device *pdev) GFP_KERNEL); if (!hsotg->ctrl_req) { dev_err(dev, "failed to allocate ctrl req\n"); + ret = -ENOMEM; goto err_ep_mem; } -- cgit v1.2.3-70-g09d2 From 1b68a4ca2d038addb7314211d122fb6d7002b38b Mon Sep 17 00:00:00 2001 From: Sebastian Andrzej Siewior Date: Sun, 19 Aug 2012 21:54:58 +0200 Subject: usb: gadget: dummy_hcd: fixup error probe path If USB2 host controller probes fine but USB3 does not then we don't remove the USB controller properly and lock up the system while the HUB code will try to enumerate the USB2 controller and access memory which is no longer available in case the dummy_hcd was compiled as a module. This is a problem since 448b6eb1 ("USB: Make sure to fetch the BOS desc for roothubs.) if used in USB3 mode because dummy does not provide this descriptor and explodes later. Cc: stable@vger.kernel.org # v3.5 Signed-off-by: Sebastian Andrzej Siewior Signed-off-by: Felipe Balbi --- drivers/usb/gadget/dummy_hcd.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) (limited to 'drivers/usb/gadget') diff --git a/drivers/usb/gadget/dummy_hcd.c b/drivers/usb/gadget/dummy_hcd.c index b799106027a..0e58a46956a 100644 --- a/drivers/usb/gadget/dummy_hcd.c +++ b/drivers/usb/gadget/dummy_hcd.c @@ -2503,10 +2503,8 @@ static int dummy_hcd_probe(struct platform_device *pdev) hs_hcd->has_tt = 1; retval = usb_add_hcd(hs_hcd, 0, 0); - if (retval != 0) { - usb_put_hcd(hs_hcd); - return retval; - } + if (retval) + goto put_usb2_hcd; if (mod_data.is_super_speed) { ss_hcd = usb_create_shared_hcd(&dummy_hcd, &pdev->dev, @@ -2525,6 +2523,8 @@ static int dummy_hcd_probe(struct platform_device *pdev) put_usb3_hcd: usb_put_hcd(ss_hcd); dealloc_usb2_hcd: + usb_remove_hcd(hs_hcd); +put_usb2_hcd: usb_put_hcd(hs_hcd); the_controller.hs_hcd = the_controller.ss_hcd = NULL; return retval; -- cgit v1.2.3-70-g09d2 From 3b9c1c5ba7a95caae8440ea47308496b14f7301a Mon Sep 17 00:00:00 2001 From: Sebastian Andrzej Siewior Date: Sun, 19 Aug 2012 21:54:59 +0200 Subject: usb: gadget: dummy_hcd: add support for USB_DT_BOS on rh Without a reply for USB_DT_BOS the USB3 mode does not work since 448b6eb1 ("USB: Make sure to fetch the BOS desc for roothubs.). Cc: stable@vger.kernel.org #v3.5 Signed-off-by: Sebastian Andrzej Siewior Signed-off-by: Felipe Balbi --- drivers/usb/gadget/dummy_hcd.c | 33 +++++++++++++++++++++++++++++++++ 1 file changed, 33 insertions(+) (limited to 'drivers/usb/gadget') diff --git a/drivers/usb/gadget/dummy_hcd.c b/drivers/usb/gadget/dummy_hcd.c index 0e58a46956a..afdbb1cbf5d 100644 --- a/drivers/usb/gadget/dummy_hcd.c +++ b/drivers/usb/gadget/dummy_hcd.c @@ -1916,6 +1916,27 @@ done: return retval; } +/* usb 3.0 root hub device descriptor */ +struct { + struct usb_bos_descriptor bos; + struct usb_ss_cap_descriptor ss_cap; +} __packed usb3_bos_desc = { + + .bos = { + .bLength = USB_DT_BOS_SIZE, + .bDescriptorType = USB_DT_BOS, + .wTotalLength = cpu_to_le16(sizeof(usb3_bos_desc)), + .bNumDeviceCaps = 1, + }, + .ss_cap = { + .bLength = USB_DT_USB_SS_CAP_SIZE, + .bDescriptorType = USB_DT_DEVICE_CAPABILITY, + .bDevCapabilityType = USB_SS_CAP_TYPE, + .wSpeedSupported = cpu_to_le16(USB_5GBPS_OPERATION), + .bFunctionalitySupport = ilog2(USB_5GBPS_OPERATION), + }, +}; + static inline void ss_hub_descriptor(struct usb_hub_descriptor *desc) { @@ -2006,6 +2027,18 @@ static int dummy_hub_control( else hub_descriptor((struct usb_hub_descriptor *) buf); break; + + case DeviceRequest | USB_REQ_GET_DESCRIPTOR: + if (hcd->speed != HCD_USB3) + goto error; + + if ((wValue >> 8) != USB_DT_BOS) + goto error; + + memcpy(buf, &usb3_bos_desc, sizeof(usb3_bos_desc)); + retval = sizeof(usb3_bos_desc); + break; + case GetHubStatus: *(__le32 *) buf = cpu_to_le32(0); break; -- cgit v1.2.3-70-g09d2 From 8b7dda554cf61e87523dee412eaf598f8646bd79 Mon Sep 17 00:00:00 2001 From: Sebastian Andrzej Siewior Date: Fri, 20 Jul 2012 20:34:24 +0200 Subject: usb: gadget: at91udc: don't overwrite driver data The driver was converted to the new start/stop interface in f3d8bf34c2 ("usb: gadget: at91_udc: convert to new style start/stop interface"). I overlooked that the driver is overwritting the private data which is used by the composite framework. The udc driver doesn't read it, it is only written here. Tested-by: Fabio Porcedda Tested-by: Mario Isidoro Cc: # v3.5 Signed-off-by: Sebastian Andrzej Siewior Signed-off-by: Felipe Balbi --- drivers/usb/gadget/at91_udc.c | 2 -- 1 file changed, 2 deletions(-) (limited to 'drivers/usb/gadget') diff --git a/drivers/usb/gadget/at91_udc.c b/drivers/usb/gadget/at91_udc.c index c9e66dfb02e..14df835991a 100644 --- a/drivers/usb/gadget/at91_udc.c +++ b/drivers/usb/gadget/at91_udc.c @@ -1635,7 +1635,6 @@ static int at91_start(struct usb_gadget *gadget, udc->driver = driver; udc->gadget.dev.driver = &driver->driver; udc->gadget.dev.of_node = udc->pdev->dev.of_node; - dev_set_drvdata(&udc->gadget.dev, &driver->driver); udc->enabled = 1; udc->selfpowered = 1; @@ -1656,7 +1655,6 @@ static int at91_stop(struct usb_gadget *gadget, spin_unlock_irqrestore(&udc->lock, flags); udc->gadget.dev.driver = NULL; - dev_set_drvdata(&udc->gadget.dev, NULL); udc->driver = NULL; DBG("unbound from %s\n", driver->driver.name); -- cgit v1.2.3-70-g09d2 From f3bb8e63a8ee0398dffe412e774d8801db7e1bf1 Mon Sep 17 00:00:00 2001 From: Sebastian Andrzej Siewior Date: Fri, 20 Jul 2012 20:34:25 +0200 Subject: usb: gadget: at91udc: Don't check for ep->ep.desc Earlier we used to check for ep->ep.desc to figure out if this ep has already been enabled and if so, abort. Ido Shayevitz removed the usb_endpoint_descriptor from private udc structure 5a6506f00 ("usb: gadget: Update at91_udc to use usb_endpoint_descriptor inside the struct usb_ep") but did not fix up the ep_enable condition because _now_ the member is always true and we can't check if this ep is enabled twice. Cc: Ido Shayevitz Tested-by: Fabio Porcedda Tested-by: Mario Isidoro Cc: # v3.5 Signed-off-by: Sebastian Andrzej Siewior Signed-off-by: Felipe Balbi --- drivers/usb/gadget/at91_udc.c | 4 +--- 1 file changed, 1 insertion(+), 3 deletions(-) (limited to 'drivers/usb/gadget') diff --git a/drivers/usb/gadget/at91_udc.c b/drivers/usb/gadget/at91_udc.c index 14df835991a..1e35963bd4e 100644 --- a/drivers/usb/gadget/at91_udc.c +++ b/drivers/usb/gadget/at91_udc.c @@ -475,8 +475,7 @@ static int at91_ep_enable(struct usb_ep *_ep, unsigned long flags; if (!_ep || !ep - || !desc || ep->ep.desc - || _ep->name == ep0name + || !desc || _ep->name == ep0name || desc->bDescriptorType != USB_DT_ENDPOINT || (maxpacket = usb_endpoint_maxp(desc)) == 0 || maxpacket > ep->maxpacket) { @@ -530,7 +529,6 @@ ok: tmp |= AT91_UDP_EPEDS; __raw_writel(tmp, ep->creg); - ep->ep.desc = desc; ep->ep.maxpacket = maxpacket; /* -- cgit v1.2.3-70-g09d2