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| author |   Maya Erez <qca_merez@qca.qualcomm.com> | 2016-05-16 22:23:32 +0300 |
|---|---|---|
| committer |   Kalle Valo <kvalo@qca.qualcomm.com> | 2016-05-28 11:19:17 +0300 |
| commit | 34b8886e502a62d1355ccc0420044aa2749a24cd (patch) | |
| tree | e87a31e3f8a4571cc4b50ee8673f36b7c2051805 /scripts | |
| parent | wil6210: guarantee safe access to rx descriptors shared memory (diff) | |
wil6210: protect wil_vring_fini_tx in parallel to tx completions
napi_synchronize is called before releasing the vring, with the
assumption that setting txdata->enabled to 0 will prevent handling
of this vring in the next scheduled napi.
To guarantee this assumption, a memory barrier is added after disabling
the txdata.
In addition, as the ctx is zeroed in wil_tx_complete after this
descriptor is handled (protected by wmb), ctx needs to be checked
before releasing this descriptor in wil_vring_free.
Signed-off-by: Maya Erez <qca_merez@qca.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
Diffstat (limited to 'scripts')
0 files changed, 0 insertions, 0 deletions