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| author | Grygorii Strashko <[email protected]> | 2016-04-19 18:09:49 +0000 |
|---|---|---|
| committer | David S. Miller <[email protected]> | 2016-04-21 18:30:39 +0000 |
| commit | 3fa88c51c73a67e7eeda1fcafd809f9185790b31 (patch) | |
| tree | b194e1c8644ce195912937929ef6d0d4d9d547fa /net/ipv4/tcp_output.c | |
| parent | tcp: Fix SOF_TIMESTAMPING_TX_ACK when handling dup acks (diff) | |
| download | kernel-3fa88c51c73a67e7eeda1fcafd809f9185790b31.tar.gz kernel-3fa88c51c73a67e7eeda1fcafd809f9185790b31.zip | |
drivers: net: cpsw: fix wrong regs access in cpsw_ndo_open
The cpsw_ndo_open() could try to access CPSW registers before
calling pm_runtime_get_sync(). This will trigger L3 error:
WARNING: CPU: 0 PID: 21 at drivers/bus/omap_l3_noc.c:147 l3_interrupt_handler+0x220/0x34c()
44000000.ocp:L3 Custom Error: MASTER M2 (64-bit) TARGET L4_FAST (Idle): Data Access in Supervisor mode during Functional access
and CPSW will stop functioning.
Hence, fix it by moving pm_runtime_get_sync() before the first access
to CPSW registers in cpsw_ndo_open().
Signed-off-by: Grygorii Strashko <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
Diffstat (limited to 'net/ipv4/tcp_output.c')
0 files changed, 0 insertions, 0 deletions