** Description changed: + [Impact] + Sometimes, TPM fails because SPI data error + + [Fix] + bfda044533b2 spi: dw: use "smp_mb()" to avoid sending spi data error + + [Test] + Reboot system few times and no TPM error message + + [Regression Potential] + Only on SPI function. Already tested on focal kernel + [Bug Description] Because of out-of-order execution about some CPU architecture, In this debug stage we find Completing spi interrupt enable -> prodrucing TXEI interrupt -> running "interrupt_transfer" function will prior to set "dw->rx and dws->rx_end" data, so this patch add memory barrier to enable dw->rx and dw->rx_end to be visible and solve to send SPI data error. eg: it will fix to this following low possibility error in testing environment which using SPI control to connect TPM Modules kernel: tpm tpm0: Operation Timed out kernel: tpm tpm0: tpm_relinquish_locality: : error -1 [Steps to Reproduce] 1) enable ima and tpm 2)reboot this system 3) [Actual Results] kernel: tpm tpm0: Operation Timed out kernel: tpm tpm0: tpm_relinquish_locality: : error -1 [Expected Results] ok [Reproducibility] low probabilities [Additional information] (Firmware version, kernel version, affected hardware, etc. if required): [Resolution] bfda044533b2 spi: dw: use "smp_mb()" to avoid sending spi data error
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1859744 Title: [spi-0115]spi: dw: use "smp_mb()" to avoid sending spi data error To manage notifications about this bug go to: https://bugs.launchpad.net/kunpeng920/+bug/1859744/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
