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| author | Russell King <rmk+kernel@armlinux.org.uk> | 2019-11-10 14:06:28 +0000 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2019-11-11 16:17:00 -0800 |
| commit | d2e816c0293fc263b3f168c14992a5f1a50d7593 (patch) | |
| tree | 9a45992e90b536fcd201ebfbbc7e8cf0d9ffd093 | |
| parent | 0936ebc42f5909da7cf4c58468d4107f7029fe29 (diff) | |
| download | linux-d2e816c0293fc263b3f168c14992a5f1a50d7593.tar.gz | |
net: sfp: handle module remove outside state machine
Removing a module resets the module state machine back to its initial state. Rather than explicitly handling this in every state, handle it early on outside of the state machine. Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk> Reviewed-by: Andrew Lunn <andrew@lunn.ch> Signed-off-by: David S. Miller <davem@davemloft.net>
| -rw-r--r-- | drivers/net/phy/sfp.c | 16 |
1 files changed, 9 insertions, 7 deletions
diff --git a/drivers/net/phy/sfp.c b/drivers/net/phy/sfp.c index 7bcb9a8c0bcd..2f3073164333 100644 --- a/drivers/net/phy/sfp.c +++ b/drivers/net/phy/sfp.c @@ -1565,6 +1565,14 @@ static void sfp_sm_device(struct sfp *sfp, unsigned int event) */ static void sfp_sm_module(struct sfp *sfp, unsigned int event) { + /* Handle remove event globally, it resets this state machine */ + if (event == SFP_E_REMOVE) { + if (sfp->sm_mod_state > SFP_MOD_PROBE) + sfp_sm_mod_remove(sfp); + sfp_sm_mod_next(sfp, SFP_MOD_EMPTY, 0); + return; + } + switch (sfp->sm_mod_state) { default: if (event == SFP_E_INSERT && sfp->attached) { @@ -1574,9 +1582,7 @@ static void sfp_sm_module(struct sfp *sfp, unsigned int event) break; case SFP_MOD_PROBE: - if (event == SFP_E_REMOVE) { - sfp_sm_mod_next(sfp, SFP_MOD_EMPTY, 0); - } else if (event == SFP_E_TIMEOUT) { + if (event == SFP_E_TIMEOUT) { int val = sfp_sm_mod_probe(sfp); if (val == 0) @@ -1598,10 +1604,6 @@ static void sfp_sm_module(struct sfp *sfp, unsigned int event) /* fallthrough */ case SFP_MOD_PRESENT: case SFP_MOD_ERROR: - if (event == SFP_E_REMOVE) { - sfp_sm_mod_remove(sfp); - sfp_sm_mod_next(sfp, SFP_MOD_EMPTY, 0); - } break; } } |