[Fishbones/phalanx] Update switchboard driver to fix kernel panic#135
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tiantianlv merged 1 commit into201811_celfrom Feb 20, 2020
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* Fix kernel panic while removing switchboard_fpga.
tiantianlv
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Feb 20, 2020
mudsut4ke
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a659219 [SONIC_SFP] adding abstract methods for reading and writing the eeprom address space within platform api (#126) 848f4a6 Add third-party licenses (#138) c2ecd9a Add license file (#137) 403747a [sonic-platform-common] Add new platform API for SONiC Physical MIB Extension feature (#134) 19b8545 [sonic_y_cable] fix the unpacking (#135) Signed-off-by: vaibhav-dahiya <[email protected]>
mudsut4ke
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…it test issue (sonic-net#6247) e6c786b [xcvrd] Fix unit test issue with Python 3 (#135)
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- What I did
Fix kernel panic removing switcboard_fpga module while XCVR is accessing. While removing the module, invalid kernel object removal causes NULL pointer dependencies left in the kernel, and a function trying to access it causes kernel exception.
PLATFORMS: Phalanx, Fishbone32, and Fishbone48.
- How I did it
The NULL pointer condition check is added to i2c-access functions. If NULL is found, a function will not perform I2c operation and exit with ESHUTDOWN status indicates that the adapter is not ready to use (suspended).
Changes applied to followings functions:
- How to verify it
sfputil show eeprommodprobe -r switchboard_fpga.JIRA: CAFP-139
- Description for the changelog