** Tags added: verification-done-jammy -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux-bluefield in Ubuntu. https://bugs.launchpad.net/bugs/1989172
Title: mlxbf-pmc: error when reading unprogrammed events Status in linux-bluefield package in Ubuntu: Invalid Status in linux-bluefield source package in Focal: Fix Committed Status in linux-bluefield source package in Jammy: Fix Committed Bug description: SRU Justification: [Impact] When the counters are not programmed to monitor any events, reading the "event<n>" file results in the following error: cat: /sys/class/hwmon/hwmon0/smmu0/event0: Invalid argument This is misleading and instead needs to indicate that the counter is currently not enabled. [Fix] * First, skip the check for whether the counter is enabled when reading the event info. If the counter is not enabled, it should return 0, which is the default value when coming out of reset. * 0 is not a valid event in most blocks as per the respective event lists, so add a "Disable" event to all the event lists. [Test Case] Without the fix, reading any "event" file right after reset when the counters are not programmed should result in the following error: cat: /sys/class/hwmon/hwmon0/smmu0/event0: Invalid argumen With the fix, it should instead print: 0x0: DISABLE [Regression Potential] Can be considered minimal To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux-bluefield/+bug/1989172/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
