Searched hist:"34 b8886e" (Results 1 – 1 of 1) sorted by relevance
| /openbmc/linux/drivers/net/wireless/ath/wil6210/ |
| H A D | txrx.c | 34b8886e Mon May 16 14:23:32 CDT 2016 Maya Erez <qca_merez@qca.qualcomm.com> 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>
34b8886e Mon May 16 14:23:32 CDT 2016 Maya Erez <qca_merez@qca.qualcomm.com> 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>
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