Re: kernel panic when called usb_control_msg()

2012-08-03 Thread Alan Stern
On Fri, 3 Aug 2012, y b wrote: > Hi, > kernel panic when called usb_control_msg(), like this: >usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0), > XR_SET_REG, USB_DIR_OUT | USB_TYPE_VENDOR, value, regnum | (block << > 8), NULL, 0, 5000) > The kernel's version is 2.6.33_rc4, but I t

Re: Kernel panic when called usb_control_msg()

2012-08-02 Thread Felipe Balbi
Hi, On Fri, Aug 03, 2012 at 11:19:36AM +0800, taylor Wang wrote: > Hello, > kernel panic when called usb_control_msg(), like this: >usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0), > XR_SET_REG, USB_DIR_OUT | USB_TYPE_VENDOR, value, regnum | (block << 8), > NULL, 0, 5000) > The ke