drivers: net: xgene: Fix module unload crash - hw resource cleanup

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When the driver is configured as kernel module and when it gets
unloaded and reloaded, kernel crash was observed.  This patch
address the hardware resource cleanups by doing the following,

- Added mac_ops->clear() to do prefetch buffer clean up
- Fixed delete freepool buffers logic
- Reordered mac_enable and mac_disable
- Added Tx completion ring free
- Moved down delete_desc_rings after ring cleanup

Signed-off-by: Iyappan Subramanian <isubramanian@apm.com>
Tested-by: Fushen Chen <fchen@apm.com>
Tested-by: Toan Le <toanle@apm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

...

This commit is contained in:

Iyappan Subramanian 2016-07-25 17:12:37 -07:00 • committed by David S. Miller

parent 9a8c5ddedd

commit cb11c062f9

6 changed files with 149 additions and 29 deletions

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41

drivers/net/ethernet/apm/xgene/xgene_enet_hw.c

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2

drivers/net/ethernet/apm/xgene/xgene_enet_hw.h

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39

drivers/net/ethernet/apm/xgene/xgene_enet_main.c

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2

drivers/net/ethernet/apm/xgene/xgene_enet_main.h

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52

drivers/net/ethernet/apm/xgene/xgene_enet_sgmac.c

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42

drivers/net/ethernet/apm/xgene/xgene_enet_xgmac.c

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