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[BISECTED] AR5414 fails to scan after "ath5k: Update reset code"

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Hello!

AR5414 fails to scan most of the time starting with the revision
94f2e0d6234991d0c10d458f6f378934efbdf6d6 "ath5k: Update reset code"

I have about 18 APs in the range.  With the latest kernel, the scan
results are usually empty.  I tried reverting parts of the patch, as it
cannot be cleanly reverted on top of wireless-testing, and I've seen
scan results with all APs occasionally, but most of the time the scan
results would be empty.

With the last working revision, bbcce7389a7288c48d96d13bbf521e901236d287
"ath5k: Update initvals", scanning gives all APs in range every time.

The chip is reported by the driver as:
ath5k phy0: Atheros AR5414 chip found (MAC: 0xa3, PHY: 0x61)

$ lspci -vnn -s 0000:0b:00.0
0b:00.0 Ethernet controller [0200]: Atheros Communications Inc. AR242x 802.11abg Wireless PCI Express Adapter [168c:001c] (rev 01)
        Subsystem: Apple Computer Inc. Device [106b:0086]
        Flags: bus master, fast devsel, latency 0, IRQ 16
        Memory at fe8f0000 (64-bit, non-prefetchable) [size=64K]
        Capabilities: [40] Power Management version 2
        Capabilities: [50] Message Signalled Interrupts: Mask- 64bit- Count=1/1 Enable-
        Capabilities: [60] Express Legacy Endpoint, MSI 00
        Capabilities: [90] MSI-X: Enable- Mask- TabSize=1
        Capabilities: [100] Advanced Error Reporting
                UESta:  DLP- SDES- TLP- FCP- CmpltTO- CmpltAbrt- UnxCmplt- RxOF- MalfTLP- ECRC- UnsupReq- ACSVoil-
                UEMsk:  DLP- SDES- TLP- FCP- CmpltTO- CmpltAbrt- UnxCmplt- RxOF- MalfTLP- ECRC- UnsupReq- ACSVoil-
                UESvrt: DLP+ SDES- TLP- FCP+ CmpltTO- CmpltAbrt- UnxCmplt- RxOF+ MalfTLP+ ECRC- UnsupReq- ACSVoil-
                CESta:  RxErr+ BadTLP- BadDLLP- Rollover- Timeout- NonFatalErr-
                CESta:  RxErr- BadTLP- BadDLLP- Rollover- Timeout- NonFatalErr-
                AERCap: First Error Pointer: 00, GenCap+ CGenEn- ChkCap+ ChkEn-
        Capabilities: [140] Virtual Channel <?>
        Kernel driver in use: ath5k
        Kernel modules: ath_pci, ath5k

It's a PCI Express minicard.  The kernel architecture is x86_64.

-- 
Regards,
Pavel Roskin
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