forked from Minki/linux
a11fa2be6d
The current code has 2 problems: 1. The maximum wait time is not long enough. It is about 60% of the duration specified by the firmware. It is calling usleep_range(600, 800) for every 1 msec we are supposed to wait. 2. The granularity of the delay is too coarse. Many simple firmware commands finish in 25 usec or less. We fix these 2 issues by multiplying the original 1 msec loop counter by 40 and calling usleep_range(25, 40) for each iteration. There is also a second delay loop to wait for the last DMA word to complete. This delay loop should be a very short 5 usec wait. This change results in much faster bring-up/down time: Before the patch: time ip link set p4p1 up real 0m0.120s user 0m0.001s sys 0m0.009s After the patch: time ip link set p4p1 up real 0m0.030s user 0m0.000s sys 0m0.010s Signed-off-by: Michael Chan <michael.chan@broadcom.com> Signed-off-by: David S. Miller <davem@davemloft.net> |
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| .. | ||
| bnx2x | ||
| bnxt | ||
| genet | ||
| b44.c | ||
| b44.h | ||
| bcm63xx_enet.c | ||
| bcm63xx_enet.h | ||
| bcmsysport.c | ||
| bcmsysport.h | ||
| bgmac.c | ||
| bgmac.h | ||
| bnx2_fw.h | ||
| bnx2.c | ||
| bnx2.h | ||
| cnic_defs.h | ||
| cnic_if.h | ||
| cnic.c | ||
| cnic.h | ||
| Kconfig | ||
| Makefile | ||
| sb1250-mac.c | ||
| tg3.c | ||
| tg3.h | ||