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H A D | sfp.c | 9cc8976c Sun Jan 10 04:59:38 CST 2021 Russell King <rmk+kernel@armlinux.org.uk> net: sfp: add debugfs support
Add debugfs support to SFP so that the internal state of the SFP state machines and hardware signal state can be viewed from userspace, rather than having to compile a debug kernel to view state transitions in the kernel log. The 'state' output looks like:
Module state: empty Module probe attempts: 0 0 Device state: up Main state: down Fault recovery remaining retries: 5 PHY probe remaining retries: 12 moddef0: 0 rx_los: 1 tx_fault: 1 tx_disable: 1
Reviewed-by: Andrew Lunn <andrew@lunn.ch> Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk> Link: https://lore.kernel.org/r/E1kyYRe-0004kN-3F@rmk-PC.armlinux.org.uk Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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