Tejun Heo <htejun <at> gmail.com> writes: > > Sigmund Scheinbar wrote: > > Tejun Heo wrote: > >> Please apply the attached patch over 2.6.20.1 and report how it works. > > > > I'm afraid that something went wrong while patching: > > Sorry, it was generated against the wrong tree. Regenerated patch attached. > > > BTW.: I'm just curious, what's the "purpose" of this patch, it looks to > > me like it is just going to ignore the problem? Or do you think that the > > hardware is faulty? > > ATAPI devices use error conditions regularly to report all sorts of > things including media not present. In some variants of ahci's, this > sets seemingly unrelated error bits - JMBs set interface error and > sb600s seem to set internal error. These errors when interpreted > literally require device reset to recover from thus ATAPI devices never > get through device ready check. So, the patch makes ahci driver > suppress those spurious errors. > I had the same problem with kernel 2.6.20.3 (from kernel.org) on the same machine (HP dc5750). I applied your patch, and the cd drive now works! dmesg shows no errors logged, and I can access the drive without any problem. Thanks, Rod. - To unsubscribe from this list: send the line "unsubscribe linux-ide" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
