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Joe Jin wrote: >> > It's against libata development tree. So, you downloaded the tar.gz >> and >> > tested it? > > no, but at latest kernel 2.6.19-rc1 use the same tree as you said, and > it also can worked I see. It's irrelevant anyway. >> And, one more thing to try. The following patch should fix your >> problem. It's against v2.6.18. >> > > while applied the patch, error info gone :) > > A question: if the status register return 0xFF means the device not exist? > why not use ata_devchk()? Many SATA controllers emulate TF registers and pass devchk even when no device is attached. I don't know whether the two conditions can happen together - 0xFF status is usually seen on PATA. Anyways, it's more reliable to test 0xFF. Also, that's what driver/ide has been doing for a long long time and we don't want to deviate from it if possible. -- tejun - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/ | ||||||||||
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