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| author |   Vignesh Raghavendra <vigneshr@ti.com> | 2021-06-22 20:08:57 +0530 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2021-06-22 10:49:56 -0700 |
| commit | ce8eb4c728ef40b554b4f3d8963f11ed44502e00 (patch) | |
| tree | fcdb988132e66e146bf1bb8604f3015d2ba664ed /tools/perf/scripts/python/export-to-postgresql.py | |
| parent | net: broadcom: bcm4908_enet: reset DMA rings sw indexes properly (diff) | |
| download | wireguard-linux-ce8eb4c728ef40b554b4f3d8963f11ed44502e00.tar.xz wireguard-linux-ce8eb4c728ef40b554b4f3d8963f11ed44502e00.zip | |
net: ti: am65-cpsw-nuss: Fix crash when changing number of TX queues
When changing number of TX queues using ethtool:
# ethtool -L eth0 tx 1
[ 135.301047] Unable to handle kernel paging request at virtual address 00000000af5d0000
[...]
[ 135.525128] Call trace:
[ 135.525142] dma_release_from_dev_coherent+0x2c/0xb0
[ 135.525148] dma_free_attrs+0x54/0xe0
[ 135.525156] k3_cppi_desc_pool_destroy+0x50/0xa0
[ 135.525164] am65_cpsw_nuss_remove_tx_chns+0x88/0xdc
[ 135.525171] am65_cpsw_set_channels+0x3c/0x70
[...]
This is because k3_cppi_desc_pool_destroy() which is called after
k3_udma_glue_release_tx_chn() in am65_cpsw_nuss_remove_tx_chns()
references struct device that is unregistered at the end of
k3_udma_glue_release_tx_chn()
Therefore the right order is to call k3_cppi_desc_pool_destroy() and
destroy desc pool before calling k3_udma_glue_release_tx_chn().
Fix this throughout the driver.
Fixes: 93a76530316a ("net: ethernet: ti: introduce am65x/j721e gigabit eth subsystem driver")
Signed-off-by: Vignesh Raghavendra <vigneshr@ti.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'tools/perf/scripts/python/export-to-postgresql.py')
0 files changed, 0 insertions, 0 deletions