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(parent: 4052af3) | patch
net: aquantia: Change inefficient wait loop on fw data reads
authorIgor Russkikh <igor.russkikh@aquantia.com>
Tue, 20 Mar 2018 11:40:33 +0000 (14:40 +0300)
committerDavid S. Miller <davem@davemloft.net>
Thu, 22 Mar 2018 16:02:49 +0000 (12:02 -0400)
commitb736b407ad14d17809592f2ab4a777cb72456816
treec68df4bb78daf637325949900e767b0b1fd15a19tree | snapshot
parent4052af30e34a391254d87e9bf7be4f320c3b6208commit | diff
net: aquantia: Change inefficient wait loop on fw data reads

B1 hardware changes behavior of mailbox interface, it has busy bit
always raised. Data ready condition should be detected by increment
of address register.

Old code has empty `for` loop, and that caused cpu overloads on B1
hardware. aq_nic_service_timer_cb consumed ~100ms because of that.

Signed-off-by: Igor Russkikh <igor.russkikh@aquantia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
drivers/net/ethernet/aquantia/atlantic/hw_atl/hw_atl_utils.c diff | blob | history
drivers/net/ethernet/aquantia/atlantic/hw_atl/hw_atl_utils.h diff | blob | history
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