[PATCH 3/3] ntb_hw_switchtec: Fix setup MW with failure bug

From: Joey Zhang Switchtec does not support setting multiple MWs simultaneously. The driver takes a hardware lock to ensure that two peers are not doing this simultaneously and it fails if someone else takes the lock. In most cases, this is fine as clients only setup the MWs once on one side of t

[PATCH 0/3] Redundant steps removal and bug fix of ntb_hw_switchtec

Hi, Everyone, This patch series remove redundant steps and fix one bug of the ntb_hw_switchtec module. When a re-initialization is caused by a link event, the driver will re-setup the shared memory windows. But at that time, the shared memory is still valid, and it's unnecessary to free, realloc

[PATCH 1/3] ntb_hw_switchtec: Remove redundant steps of switchtec_ntb_reinit_peer() function

From: Joey Zhang When a re-initialization is caused by a link event, the driver will re-setup the shared memory window. But at that time, the shared memory is still valid, and it's unnecessary to free, reallocate and then initialize it again. We only need to reconfigure the hardware registers. Re

[PATCH 2/3] ntb_hw_switchtec: Skip unnecessary re-setup of shared memory window for crosslink case

From: Wesley Sheng In case of NTB crosslink topology, the setting of shared memory window in the virtual partition doesn't reset on peer's reboot. So skip the unnecessary re-setup of shared memory window for that case. Signed-off-by: Wesley Sheng --- drivers/ntb/hw/mscc/ntb_hw_switchtec.c | 3