Bug#681232: [3.2.20->3.2.21 regression] Atheros WiFi Adapter couldn't find networks "gain calibration timeout"

[Jesse Rhodes <drubo@drubo.net>]

sney@bivouac:~/data/debian/linux$ git bisect good
bcf3655971d24d7f08f373ed5830e8e11010088a is the first bad commit
commit bcf3655971d24d7f08f373ed5830e8e11010088a
Author: Andi Kleen <ak@linux.intel.com>
Date:   Thu Jan 26 00:09:12 2012 +0100

    cpufreq: Add support for x86 cpuinfo auto loading v4
    
    commit fa8031aefec0cf7ea6c2387c93610d99d9659aa2 upstream.
    
    This marks all the x86 cpuinfo tables to the CPU specific device drivers,
    to allow auto loading by udev. This should simplify the distribution
    startup scripts for this greatly.
    
    I didn't add MODULE_DEVICE_IDs to the centrino and p4-clockmod drivers,
    because those probably shouldn't be auto loaded and the acpi driver
    be used instead (not fully sure on that, would appreciate feedback)
    
    The old nforce drivers autoload based on the PCI ID.
    
    ACPI cpufreq is autoloaded in another patch.
    
    v3: Autoload gx based on PCI IDs only. Remove cpu check (Dave Jones)
    v4: Use newly introduce HW_PSTATE feature for powernow-k8 loading
    
    Cc: Dave Jones <davej@redhat.com>
    Cc: Kay Sievers <kay.sievers@vrfy.org>
    Signed-off-by: Andi Kleen <ak@linux.intel.com>
    Signed-off-by: Thomas Renninger <trenn@suse.de>
    Acked-by: H. Peter Anvin <hpa@zytor.com>
    Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

:040000 040000 9e8261ec125a438b1e1f36930cecbc9e72b55854 b5ede0d25adad661eb02fc4c9126cdf935eb01d5 M    drivers

sney@bivouac:~/data/debian/linux$ git bisect log
git bisect start
# good: [8499e79e9ee4c946ae38fd12e5d3afe8b68f2dfd] Linux 3.2.21
git bisect good 8499e79e9ee4c946ae38fd12e5d3afe8b68f2dfd
# bad: [8846d9ca633324ae8596a13a511b77518061333e] Input: add Synaptics USB device driver
git bisect bad 8846d9ca633324ae8596a13a511b77518061333e
# good: [d2f0f9a196fe7120062ed23401b24a63609b5c98] x86, efi: Fix endian issues and unaligned accesses
git bisect good d2f0f9a196fe7120062ed23401b24a63609b5c98
# good: [118c0878a89079ea69938680e78141169a0a21c1] be2net: Fix traffic stall INTx mode
git bisect good 118c0878a89079ea69938680e78141169a0a21c1
# good: [4e197eba189f61cccb5ec25902ae45317d12be76] ethtool: allow ETHTOOL_GSSET_INFO for users
git bisect good 4e197eba189f61cccb5ec25902ae45317d12be76
# bad: [7e2a68c51b56ef8a56ee331becb5f01f56b78865] x86/cpu: Fix overrun check in arch_print_cpu_modalias()
git bisect bad 7e2a68c51b56ef8a56ee331becb5f01f56b78865
# good: [48532cdd091297c71fffa8a12e0064dc58218ff4] CPU: Introduce ARCH_HAS_CPU_AUTOPROBE and X86 parts
git bisect good 48532cdd091297c71fffa8a12e0064dc58218ff4
# good: [e7b92c939bc8690e2c1188be1675aa106cdaf4c4] ACPI: Load acpi-cpufreq from processor driver automatically
git bisect good e7b92c939bc8690e2c1188be1675aa106cdaf4c4
# good: [3a5874ab17f55524ec61176a81b5f9448d4eccad] HWMON: Convert coretemp to x86 cpuid autoprobing
git bisect good 3a5874ab17f55524ec61176a81b5f9448d4eccad
# bad: [bcf3655971d24d7f08f373ed5830e8e11010088a] cpufreq: Add support for x86 cpuinfo auto loading v4
git bisect bad bcf3655971d24d7f08f373ed5830e8e11010088a
# good: [d339ab6933c6d8413ac002bda196ff3c0f3455aa] X86: Introduce HW-Pstate scattered cpuid feature
git bisect good d339ab6933c6d8413ac002bda196ff3c0f3455aa

Hope this helps you find the cause.

On Fri, Aug 10, 2012 at 8:32 AM, Jesse Rhodes <drubo@drubo.net> wrote:

Ok:

3.2.0-3 (3.2.23-1) also produces the timeouts. So, just "use the kernel from sid" isn't even a workaround. I will continue bisecting.

On Thu, Aug 9, 2012 at 10:41 AM, Ben Hutchings <ben@decadent.org.uk> wrote:

On Thu, Aug 09, 2012 at 09:57:17AM -0600, Jesse Rhodes wrote:
> Bisecting away.
>
> Is 3.2.0-3 (3.2.23-1) from sid exempt from the freeze? I'm going to try
> that one as well. If it works, at least it'll likely work for the release,
> though we should probably keep hunting for the cause of this bug lest it
> surface again.

The kernel and release teams are in close contact, and all linux
uploads to sid are expected to be eligible for freeze exceptions.

Ben.

--
Ben Hutchings
We get into the habit of living before acquiring the habit of thinking.
                                                              - Albert Camus