Bug 478544

Summary:	Yanking gspca-based USB webcam when in use results in khubd eating CPU
Product:	[Fedora] Fedora	Reporter:	James <james>
Component:	kernel	Assignee:	Kernel Maintainer List <kernel-maint>
Status:	CLOSED RAWHIDE	QA Contact:	Fedora Extras Quality Assurance <extras-qa>
Severity:	medium	Docs Contact:
Priority:	low
Version:	10	CC:	kernel-maint, quintela
Target Milestone:	---
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:	2.6.28-3.fc11	Doc Type:	Bug Fix
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2009-01-08 15:00:36 UTC	Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:

Description James 2008-12-31 18:22:56 UTC

Description of problem:
I have a pac207-based webcam using the gspca driver:

usb 5-1: new full speed USB device using ohci_hcd and address 8
usb 5-1: device descriptor read/64, error -62
usb 5-1: configuration #1 chosen from 1 choice
gspca: probing 093a:2468
pac207: Pixart Sensor ID 0x27 Chips ID 0x00
pac207: Pixart PAC207BCA Image Processor and Control Chip detected (vid/pid 0x093A:0x2468)
gspca: probe ok
usb 5-1: New USB device found, idVendor=093a, idProduct=2468
usb 5-1: New USB device strings: Mfr=1, Product=2, SerialNumber=0
usb 5-1: Product: CIF Single Chip     
usb 5-1: Manufacturer: Pixart Imaging Inc. 

If I pull the plug on it when it's in use (e.g. with Cheese), khubd starts spinning until I close the application that opened the camera.

Version-Release number of selected component (if applicable):
kernel-2.6.27.10-167.fc10.i686

How reproducible:
Always.

Steps to Reproduce:
1. Attach camera.
2. Start Cheese, wait for live view to start.
3. Pull camera plug.
4. Observe CPU usage.
5. Close Cheese.

Comment 1 James 2009-01-01 12:43:17 UTC

This is fixed in rawhide, not seen in kernel-2.6.28-3.fc11.i686.