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authorRajat Jain <rajatja@google.com>2018-04-26 17:43:50 -0700
committerLuca Coelho <luciano.coelho@intel.com>2018-09-28 08:57:26 +0300
commit9a098a89df79e4cc5e743d7d4acf42bdbcc32ee7 (patch)
tree9fbae686783cc09c1e440c47030560d0cb696dc8 /tools/perf/scripts/python/export-to-postgresql.py
parentbb03927e0eafef4d2509ff3df7550acf98efea97 (diff)
iwlwifi: pcie: Fail fast if HW is inaccessible at probe
If the HW is not responding at probe time, fail immediately complaining about it. Without this, we see that the kernel spends > 100ms trying to load firmware (even gives an incorrect impression that it actually loaded a firmware) and do unnecesary processing before concluding that the device is not accessible: INFO kernel: [ 34.092678] iwlwifi 0000:01:00.0: enabling device (0000 -> 0002) WARNING kernel: [ 34.093560] iwlwifi 0000:01:00.0: Direct firmware load for iwl-dbg-cfg.ini failed with error -2 INFO kernel: [ 34.111523] iwlwifi 0000:01:00.0: loaded firmware version 17.318154.0 op_mode iwlmvm INFO kernel: [ 34.173250] iwlwifi 0000:01:00.0: Detected Intel(R) Dual Band Wireless AC 7265, REV=0xFFFFFFFF ERR kernel: [ 34.198023] iwlwifi 0000:01:00.0: iwlwifi transaction failed, dumping registers ERR kernel: [ 34.198044] iwlwifi 0000:01:00.0: iwlwifi device config registers: Signed-off-by: Rajat Jain <rajatja@google.com> Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
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