Thread: [zd1211-devs] Panic with linux kernel 2.6.33.2 and zd1211rw driver
Status: Beta
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From: Mahajan, K. <kir...@pa...> - 2010-09-28 14:49:16
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Hi All, I am getting the kernel panic while using SMC wireless dongle with the zd1211rw driver. The system is an Embedded system. The scenario is as follows when I get the kernel panic, 1) connect the system with secured wireless network - I am using wpa_supplicant for this 2) Once you IP address with the help of dhcp start pinging to a system on the same network 3) when ping is going on then physically remove the dongle At this movement the system halts, few times i can see the register dump other wise it just halts. When I unplug the device physically then USB subsystem start the disconnection process and during this process it halts at any place. the related info: 1) Kernel is configured for EHCI (USB2.0) 2) SMC uses Zydas 1211 chip set 3) zd1211rw driver is used 4) zd1211 v1.4 firmware is used 5) System hangs at multiple places (not at specific place in the kernel every time) 6) Linux kernel used 2.6.33.2 7) Its an embedded system with the MIPS processor (AU1250) which has on-chip USB 2.0 Host Controller One more observation is that if I configure kernel for OHCI (USB 1.1) instead of EHCI (USB 2.0), then I could not see same behavior. I don't have much understanding of USB subsystem. Is there any change needed in zd1211rw driver? So could anybody help me out to resolve this issue. Thanks, Kirankumar Information contained and transmitted by this e-mail is confidential and proprietary to Patni Computer Systems Ltd and its affiliates (hitherto referred as Patni Computers) and is intended for use only by the recipient. If you are not the intended recipient , you are hereby notified that any dissemination, distribution, copying or use of this e-mail is strictly prohibited and you are requested to delete this e-mail immediately and notify the originator or net...@pa.... Patni Computers does not enter into any agreement with any party by e-mail. Any views expressed by an individual do not necessarily reflect the view of Patni Computers. Patni Computers is not responsible for the consequences of any actions taken on the basis of information provided, through this email. The contents of an attachment to this e-mail may contain software viruses, which could damage your own computer system. While Patni Computers has taken every reasonable precaution to minimise this risk, we cannot accept liability for any damage which you sustain as a result of software viruses. You should carry out your own virus checks before opening an attachment. To know more about Patni Computers please visit www.patni.com. |