tree e8fca97b36f0ba510c237cbcd329c2f79dfaf5a9
parent 5678be6d67eb804cc4a4d2006662c9e6884236c8
author Johannes Berg <johannes.berg@intel.com> 1669810411 +0100
committer Chromeos LUCI <chromeos-scoped@luci-project-accounts.iam.gserviceaccount.com> 1677534157 +0000

CHROMIUM: iwl7000: check for all HW errors in debug dump

The hardware, depending on which part fails or times out,
returns 0xA5A5A5A, or 0x5A5A5A5, with the lowest 4 bits
encoding some further reason/status. In iwl_read_prph()
we return 0x5A5A5A5 if getting NIC access fails, but in
the debug code we don't check for both of the possible
values, so we might attempt to dump even while the NIC
isn't responding.

Add a helper to check for both values and use it in the
FW debug code.

BUG=b:269163426
TEST=basic stability and connectivity

Change-Id: I1c297a53787b87e4e2b8f296c041921338573f4d
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/third_party/kernel/+/4284062
Reviewed-by: Nicolas Norvez <norvez@chromium.org>
Commit-Queue: Nicolas Norvez <norvez@chromium.org>
Tested-by: Nicolas Norvez <norvez@chromium.org>
Reviewed-by: Abhishek Kumar <kuabhs@chromium.org>
(cherry picked from commit 6ebcdc1bb5eec324cea4546b44ab482da73b9c90)
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/third_party/kernel/+/4296356
Commit-Queue: Kaidong Wang <kaidong@google.com>
Reviewed-by: Jintao Lin <jintaolin@chromium.org>
Tested-by: Kaidong Wang <kaidong@google.com>