diff options
| author | Bryan O'Donoghue <[email protected]> | 2019-12-19 13:15:38 +0000 |
|---|---|---|
| committer | Kalle Valo <[email protected]> | 2020-01-26 12:21:36 +0200 |
| commit | d239380196c4e27a26fa4bea73d2bf994c14ec2d (patch) | |
| tree | 0272640d441671c1641448a232b5d0d03781983b /scripts/bpf_helpers_doc.py | |
| parent | f89ee9927a49d805ae355c6d88a22e11a7ec083a (diff) | |
ath10k: pci: Only dump ATH10K_MEM_REGION_TYPE_IOREG when safe
ath10k_pci_dump_memory_reg() will try to access memory of type
ATH10K_MEM_REGION_TYPE_IOREG however, if a hardware restart is in progress
this can crash a system.
Individual ioread32() time has been observed to jump from 15-20 ticks to >
80k ticks followed by a secure-watchdog bite and a system reset.
Work around this corner case by only issuing the read transaction when the
driver state is ATH10K_STATE_ON.
Tested-on: QCA9988 PCI 10.4-3.9.0.2-00044
Fixes: 219cc084c6706 ("ath10k: add memory dump support QCA9984")
Signed-off-by: Bryan O'Donoghue <[email protected]>
Signed-off-by: Kalle Valo <[email protected]>
Diffstat (limited to 'scripts/bpf_helpers_doc.py')
0 files changed, 0 insertions, 0 deletions