On S6100 we are seeing almost 100K interrupts per second on intels i801 SMBUS controller which affects systems performance.
We now disable the i801 driver interrupt and instead enable polling
Microsoft ADO (number only): 24910530
How I did it
Disable the interrupt by passing the interrupt disable feature argument to i2c-i801 driver
How to verify it
This fix is NOT applicable for ARM based platforms. Applicable only for intel based platforms:-
- On SN2700 its already disabled in Mellanox hw-mgmt
- Celestica DX010 and E1031
- Dell S6100 verified the interrupts are no longer incrementing.
- Arista 7260CX3
Signed-off-by: Prince George <prgeor@microsoft.com>
Why I did it
To support iTCO watchdog using watchdog APIs.
How I did it
Implemented a new watchdog class WatchdogTCO for interfacing with iTCO watchdog.
Updated reboot cause determination logic.
How to verify it
Verified that the watchdog APIs' return values are as expected.
Logs: UT_logs.txt
dell_ich module fails to load sometimes due to the failure of pci_get_drvdata().
This function is responsible for fetching INTEL PCI related memory handle in kernel. This is implemented in lpc_ich kernel module.
Due to race in addition/deletion of kernel modules, sometimes lpc_ich loads after dell_ich.
Because of this behaviour dell_ich module fails to load.
Fixed by addding dependency between modules.
Removed i2c_mux_gpio module from blacklist entry as it is not the original root case of this issue.
