| Message ID | 1617399650-28927-1-git-send-email-asmaa@nvidia.com |
|---|---|
| Headers | show |
| Series | UBUNTU: SAUCE: ipmb_host.c: Fix slow transactions | expand |
Applied to Focal/bluefield master-next. Thank you! -Kelsey On 2021-04-02 17:40:49 , Asmaa Mnebhi wrote: > BugLink: https://bugs.launchpad.net/bugs/1922393 > > SRU Justification: > > [Impact] > > * The previous ipmb_host patch broke the customer tests. They requested to make the ipmb_host response time as long as before. In the case where the I2C bus is made very busy, the ipmb_host driver just drops slow/delayed responses. This fix elongates the timeout of the response. > * Fixes a crash which occurs after powercycling certain BlueField-2 systems. > * The crash is due to the handshake which takes too long to wait for a response at boot time. > > [Fix] > > * Before executing the IPMB handshake which loads the ipmb_host driver, detect if there is a slave detected and make sure that the slave can respond. > * Free current_msg pointer right after sending the message so that sent transactions are independent of the response transactions. > > [Test Case] > > * soft reset > * powercycle > * run ipmitool commands > * remove and load module manually > > [Regression Potential] > > * The regression can be considered as low, since: > * it restores previous stable code for the customer > * and fixes a crash occurring after powercycling certain BlueField-2 systems. > > -- > kernel-team mailing list > kernel-team@lists.ubuntu.com > https://lists.ubuntu.com/mailman/listinfo/kernel-team