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| author |   Michael Chan <michael.chan@broadcom.com> | 2025-11-03 16:56:55 -0800 |
|---|---|---|
| committer |   Jakub Kicinski <kuba@kernel.org> | 2025-11-04 17:25:19 -0800 |
| commit | bc7208ca805ae6062f353a4753467d913d963bc6 (patch) | |
| tree | e3b6ac580745f9f8cb3adaa03190bdc68244544d /rust/kernel/debugfs/git:/ssh:/git@git.zx2c4.com | |
| parent | virtio_net: fix alignment for virtio_net_hdr_v1_hash (diff) | |
| download | wireguard-linux-bc7208ca805ae6062f353a4753467d913d963bc6.tar.xz wireguard-linux-bc7208ca805ae6062f353a4753467d913d963bc6.zip | |
bnxt_en: Shutdown FW DMA in bnxt_shutdown()
The netif_close() call in bnxt_shutdown() only stops packet DMA. There
may be FW DMA for trace logging (recently added) that will continue. If
we kexec to a new kernel, the DMA will corrupt memory in the new kernel.
Add bnxt_hwrm_func_drv_unrgtr() to unregister the driver from the FW.
This will stop the FW DMA. In case the call fails, call pcie_flr() to
reset the function and stop the DMA.
Fixes: 24d694aec139 ("bnxt_en: Allocate backing store memory for FW trace logs")
Reported-by: Jakub Kicinski <kicinski@meta.com>
Reviewed-by: Damodharam Ammepalli <damodharam.ammepalli@broadcom.com>
Reviewed-by: Kalesh AP <kalesh-anakkur.purayil@broadcom.com>
Reviewed-by: Somnath Kotur <somnath.kotur@broadcom.com>
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Link: https://patch.msgid.link/20251104005700.542174-2-michael.chan@broadcom.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'rust/kernel/debugfs/git:/ssh:/git@git.zx2c4.com')
0 files changed, 0 insertions, 0 deletions