Hi all,
I still have issues using the USB DMA mode driver with a mass storage and a WIFI USB dongle in the mean while. Indeed I have untimely disconnected MS device when I try to download a file with WIFI key and store it on the mass storage device. Sometimes it's due to TX_CSR_ERROR and sometimes due to RXCSR_STALL... Does anyone experience this problem ? Can anybody help me with this problem ? I'm working on it for several weeks and I do not understand the root cause of this consequence. This problem is very easy to reproduce but it's untimely.......It seems to be a race condition but I don't understand where it happens ... Best regards. Stéphane Cerveau. From: Stephane Cerveau Sent: jeudi 1 avril 2010 14:30 To: 'Pratik Joshi'; davinci-linux-open-source@linux.davincidsp.com Subject: RE: Query -USB hub with multiple block devices connected Hi all, I experienced the same bug and I succeed to workaround the bug by adding a delay into musb_ep_program but this is working only with the RT73 USB Wireless device. I experienced bug with other Wireless device. Joshi, you can I think the verbose level in the musb driver. May be it can help you to diagnose the bug with more accuracy... Any comment or help will be welcome. Stephane From: Pratik Joshi [mailto:pratik.jo...@einfochips.com] Sent: jeudi 1 avril 2010 12:43 To: davinci-linux-open-source@linux.davincidsp.com Subject: RE: Query -USB hub with multiple block devices connected Hi All, I am getting following error while I run Wireless USB device and a mass storage device together. This error is displayed on console continuously and I have to reboot the DVEVM. ++++++++++++++++++++++++++++++++++ SCSI error : <0 0 0 0> return code = 0x70000 end_request: I/O error, dev sda, sector 4404236 ------------------------------------------------------------- Regards, Pratik Joshi Embedded Engineer eInfochips Ltd, Ahmedabad, India +91-079-26563705 - ext - 303 www.einfochips.com From: Pratik Joshi [mailto:pratik.jo...@einfochips.com] Sent: Tuesday, March 30, 2010 6:26 PM To: 'davinci-linux-open-source@linux.davincidsp.com' Subject: Query -USB hub with multiple block devices connected Hi All, We are seeing following problem: Setup: We have connected a USB hub to DVEVM. We have connected two bulk devices mass storage and USB wireless device. We are continuously receiving data on USB wireless device (using iperf utility) and at the same time continuously writing to mass storage device. We do fsync () after writing data using write command to ensure data is actually written to mass storage device. Problem statement: In above setup we see SCSI errors and I/O errors. Also we have observed "usb 1-1.1: usb_sg_cancel, unlink --> 0" message sometimes. What is the significance of this message? Has anyone tested USB driver in such a driver? Regards, Pratik Joshi Embedded Engineer eInfochips Ltd, Ahmedabad, India +91-079-26563705 - ext - 303 www.einfochips.com -- _____ Disclaimer: This e-mail message and all attachments transmitted with it are intended solely for the use of the addressee and may contain legally privileged and confidential information. If the reader of this message is not the intended recipient, or an employee or agent responsible for delivering this message to the intended recipient, you are hereby notified that any dissemination, distribution, copying, or other use of this message or its attachments is strictly prohibited. If you have received this message in error, please notify the sender immediately by replying to this message and please delete it from your computer. Any views expressed in this message are those of the individual sender unless otherwise stated.Company has taken enough precautions to prevent the spread of viruses. However the company accepts no liability for any damage caused by any virus transmitted by this email. _____ __________ Information from ESET NOD32 Antivirus, version of virus signature database 4991 (20100401) __________ The message was checked by ESET NOD32 Antivirus. http://www.eset.com __________ Information from ESET NOD32 Antivirus, version of virus signature database 4991 (20100401) __________ The message was checked by ESET NOD32 Antivirus. http://www.eset.com __________ Information from ESET NOD32 Antivirus, version of virus signature database 5003 (20100406) __________ The message was checked by ESET NOD32 Antivirus. http://www.eset.com __________ Information from ESET NOD32 Antivirus, version of virus signature database 5009 (20100408) __________ The message was checked by ESET NOD32 Antivirus. http://www.eset.com
_______________________________________________ Davinci-linux-open-source mailing list Davinci-linux-open-source@linux.davincidsp.com http://linux.davincidsp.com/mailman/listinfo/davinci-linux-open-source
