On Tue, 16 Apr 2013 10:59:53 -0400 Josh Boyer <jwbo...@gmail.com> wrote:
> On Tue, Apr 16, 2013 at 04:55:25PM +0200, richard -rw- weinberger wrote: > >On Tue, Apr 16, 2013 at 4:20 PM, Stephan von Krawczynski > ><sk...@ithnet.com> wrote: > >> Hello, > >> > >> can some kind soul please explain how I can get my serial port back under > >> kernel 3.8.X. Earlier kernels showed: > >> > >> Jan 10 13:57:18 mybox kernel: [ 0.712829] serial8250: ttyS0 at I/O 0x3f8 > >> (irq = 4) is a 16550A > >> > >> But 3.8.4: > >> > >> Mar 26 10:39:14 admin kernel: [ 0.603647] serial 00:0a: disabled > >> > >> Only kernel is replaced, no change in distro > >> Is there some kernel boot parameter needed now? > >> I tried 3.4.X and it works, even 3.7.X works... > > > >So, 3.8.3 worked and 3.8.4 introduced a regression? > >If so please confirm. > > > >CC'ing gregkh, just in case... > > We had a report of this in Fedora that was fixed with 3.8.7. An upstream > change had been brought back to the 3.8.x series, and it was subsequently > reverted. 3.8.7 picked up the revert. > > josh 3.8.7 does not work either. I just checked it. I tried shared and not shared IRQ: Apr 16 17:47:05 mybox kernel: [ 0.604826] Serial: 8250/16550 driver, 8 ports, IRQ sharing disabled and another test: Apr 16 18:07:08 mybox kernel: [ 0.601203] Serial: 8250/16550 driver, 8 ports, IRQ sharing enabled I must say that 3.8.7 does not even tell the "serial 00:0a: disabled" any more. This is no special board, it is a pretty mainstream asus xeon board with onboard serial. Loading 3.4.24 (just an example) makes the port work immediately. Anything else I can test? -- Regards, Stephan -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
