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| author | Grygorii Strashko <grygorii.strashko@ti.com> | 2016-04-19 18:09:49 (GMT) |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2016-04-21 18:30:39 (GMT) |
| commit | 3fa88c51c73a67e7eeda1fcafd809f9185790b31 (patch) | |
| tree | b194e1c8644ce195912937929ef6d0d4d9d547fa /net | |
| parent | 479f85c36688f5c855ad463b71902ef5992628b7 (diff) | |
| download | linux-3fa88c51c73a67e7eeda1fcafd809f9185790b31.tar.xz | |
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 <grygorii.strashko@ti.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net')
0 files changed, 0 insertions, 0 deletions