musb: usb storage: USB device not accepting new address error
I am working on a custom OMAPL138 (DA8XX) based board. On 2010.12 release USB host mode is successfully working. But it is broken on 2011.03-rc1.
I am taking "USB device not accepting new address (errror=2)" error when i issue "usb start" cmd.
I analysed the problem but can not come up with a solution.
Regards.
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Hi,
2011/3/26 Alper YILDIRIM <[email protected]>:
Quoted 8 lines
I am working on a custom OMAPL138 (DA8XX) based board. On 2010.12 release USB host mode is successfully working. But it is broken on 2011.03-rc1.
I am taking "USB device not accepting new address (errror=2)" error when i issue "usb start" cmd.
I analysed the problem but can not come up with a solution.
Have you tried 'git bisect' to find the offending patch already?
Kind regards,
Remy
Quoted 6 lines · Remy Bohmer-5 wrote:
Hi,
Have you tried 'git bisect' to find the offending patch already?
I am not familiar with "git bisect" cmd.
I will study the usage of it and inform you afterwards. Thanks Remy
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Hi,
Quoted 5 lines · Remy Bohmer-5 wrote:
Have you tried 'git bisect' to find the offending patch already?
I found the offending patch, it is the following commit that makes usb broken on OMAPL138. When i revert the patch the problem no more occurs.
3c0659b535b075be124c3d2a0714e55e65c46737
ARM: Avoid compiler optimization for readb, writeb and friends.
I am working on a proper solution.
Any help will be appreciated
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Dear Alper YILDIRIM,
Quoted 10 lines · In message <[email protected]> you wrote:
I found the offending patch, it is the following commit that makes usb broken on OMAPL138. When i revert the patch the problem no more occurs.
3c0659b535b075be124c3d2a0714e55e65c46737
ARM: Avoid compiler optimization for readb, writeb and friends.I am working on a proper solution.
Any help will be appreciated
This problem was fixed in a later commit. See
commit 495df3bad9f250a36470cce15f14c36c616172b6 Author: Wolfgang Denk <[email protected]> Date: Fri Feb 11 12:25:48 2011 +0000 ARM: fix write*() I/O accessors
And if you read the comments in the related posting
(http://article.gmane.org/gmane.comp.boot-loaders.u-boot/94502) you will also see that this explicitly mentions fixing problems in drivers/usb/musb/musb_core.c, and why.
You could have found this by searching the archives.
Best regards,
Wolfgang Denk
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