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/+/4284059
Reviewed-by: Abhishek Kumar <kuabhs@chromium.org>
Tested-by: Nicolas Norvez <norvez@chromium.org>
Reviewed-by: Nicolas Norvez <norvez@chromium.org>
Commit-Queue: Nicolas Norvez <norvez@chromium.org>
(cherry picked from commit 37257dc40ee1a65d7aa9d327ac407a84f0452028)
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/third_party/kernel/+/4295543
Reviewed-by: Jintao Lin <jintaolin@chromium.org>
Tested-by: Kaidong Wang <kaidong@google.com>
Commit-Queue: Kaidong Wang <kaidong@google.com>
2 files changed
