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From: Sascha Hauer <s.hauer@pengutronix.de>
To: barebox@lists.infradead.org
Subject: [PATCH 03/23] USB: gadget: composite: Break out of potential endless loop
Date: Mon, 21 Jul 2014 17:14:27 +0200	[thread overview]
Message-ID: <1405955687-27433-4-git-send-email-s.hauer@pengutronix.de> (raw)
In-Reply-To: <1405955687-27433-1-git-send-email-s.hauer@pengutronix.de>

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
---
 drivers/usb/gadget/composite.c | 7 ++++++-
 include/usb/composite.h        | 2 ++
 2 files changed, 8 insertions(+), 1 deletion(-)

diff --git a/drivers/usb/gadget/composite.c b/drivers/usb/gadget/composite.c
index 37c67d5..ba3b9da 100644
--- a/drivers/usb/gadget/composite.c
+++ b/drivers/usb/gadget/composite.c
@@ -577,16 +577,21 @@ static void reset_config(struct usb_composite_dev *cdev)
 {
 	struct usb_function		*f;
 
+	if (cdev->in_reset_config)
+		return;
+
+	cdev->in_reset_config = 1;
+
 	DBG(cdev, "reset config\n");
 
 	list_for_each_entry(f, &cdev->config->functions, list) {
 		if (f->disable)
 			f->disable(f);
-
 		bitmap_zero(f->endpoints, 32);
 	}
 	cdev->config = NULL;
 	cdev->delayed_status = 0;
+	cdev->in_reset_config = 0;
 }
 
 static int set_config(struct usb_composite_dev *cdev,
diff --git a/include/usb/composite.h b/include/usb/composite.h
index 5b92c92..d24454c 100644
--- a/include/usb/composite.h
+++ b/include/usb/composite.h
@@ -392,6 +392,8 @@ struct usb_composite_dev {
 
 	/* protects deactivations and delayed_status counts*/
 	spinlock_t			lock;
+
+	int in_reset_config;
 };
 
 extern int usb_string_id(struct usb_composite_dev *c);
-- 
2.0.1


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  parent reply	other threads:[~2014-07-21 15:15 UTC|newest]

Thread overview: 26+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2014-07-21 15:14 USB Gadget updates Sascha Hauer
2014-07-21 15:14 ` [PATCH 01/23] USB: gadget: Update to 3.15 Sascha Hauer
2014-07-21 15:14 ` [PATCH 02/23] USB: gadget: dequeue descriptor before freeing it Sascha Hauer
2014-07-21 15:14 ` Sascha Hauer [this message]
2014-07-21 15:14 ` [PATCH 04/23] USB: gadget: fsl_udc: Warn about freeing queued descriptors Sascha Hauer
2014-07-21 15:14 ` [PATCH 05/23] USB: gadget: usbserial: Always enable console Sascha Hauer
2014-07-21 15:14 ` [PATCH 06/23] param: Add dev_add_param_string Sascha Hauer
2014-07-21 15:14 ` [PATCH 07/23] USB: gadget: specify vendor/product id with device parameters Sascha Hauer
2014-07-21 15:14 ` [PATCH 08/23] USB: gadget: DFU: remove unused code Sascha Hauer
2014-07-21 15:14 ` [PATCH 09/23] USB: gadget: DFU: Use usb_assign_descriptors/usb_free_all_descriptors Sascha Hauer
2014-07-21 15:14 ` [PATCH 10/23] USB: gadget: DFU: Move locally used defines/structs to dfu driver Sascha Hauer
2014-07-21 15:14 ` [PATCH 11/23] Add function to parse a string in dfu format Sascha Hauer
2014-07-21 15:14 ` [PATCH 12/23] USB: gadget: DFU: Move stuff to dfu_bind Sascha Hauer
2014-07-21 15:14 ` [PATCH 13/23] USB: gadget: DFU: use usb_gstrings_attach Sascha Hauer
2014-07-21 15:14 ` [PATCH 14/23] USB: gadget: DFU: free resources when usb_gadget_poll fails Sascha Hauer
2014-07-21 15:14 ` [PATCH 15/23] USB: gadget: DFU: return -EINTR when interrupted Sascha Hauer
2014-07-21 15:14 ` [PATCH 16/23] USB: gadget: DFU: register as USB function Sascha Hauer
2014-07-21 15:14 ` [PATCH 17/23] USB: gadget: DFU: drop app idle state Sascha Hauer
2014-07-21 15:14 ` [PATCH 18/23] Add release string Sascha Hauer
2014-07-21 15:14 ` [PATCH 19/23] USB: gadget: Add Android fastboot support Sascha Hauer
2014-07-22  7:25   ` Holger Schurig
2014-07-22  9:23     ` Sascha Hauer
2014-07-21 15:14 ` [PATCH 20/23] USB: gadget: Add a multi function gadget Sascha Hauer
2014-07-21 15:14 ` [PATCH 21/23] USB: gadget: fsl_udc: Be more tolerant in fsl_ep_dequeue Sascha Hauer
2014-07-21 15:14 ` [PATCH 22/23] Documentation: Add documentation for USB serial console Sascha Hauer
2014-07-21 15:14 ` [PATCH 23/23] Documentation: Add documentation for Fastboot and Composite Multifunction Gadget Sascha Hauer

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