tmakin/tegra-linux-noble
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

crypto: qat - remove faulty arbiter config reset

Browse Source 
BugLink: https://bugs.launchpad.net/bugs/2101915

[ Upstream commit 70199359902f1c7187dcb28a1be679a7081de7cc ]

Resetting the service arbiter config can cause potential issues
related to response ordering and ring flow control check in the
event of AER or device hang. This is because it results in changing
the default response ring size from 32 bytes to 16 bytes. The service
arbiter config reset also disables response ring flow control check.
Thus, by removing this reset we can prevent the service arbiter from
being configured inappropriately, which leads to undesired device
behaviour in the event of errors.

Fixes: 7afa232e76 ("crypto: qat - Intel(R) QAT DH895xcc accelerator")
Signed-off-by: Ahsan Atta <ahsan.atta@intel.com>
Reviewed-by: Giovanni Cabiddu <giovanni.cabiddu@intel.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Koichiro Den <koichiro.den@canonical.com>
Signed-off-by: Stefan Bader <stefan.bader@canonical.com>
This commit is contained in:
Ahsan Atta
2025-03-11 08:51:19 +09:00
committed by Stefan Bader
parent 21bba07921
commit 567b30b426
1 changed files with 0 additions and 4 deletions
Download Patch File Download Diff File Expand all files Collapse all files
drivers/crypto/intel/qat/qat_common/adf_hw_arbiter.c
-4
View File
@@ -90,10 +90,6 @@ void adf_exit_arb(struct adf_accel_dev *accel_dev)
hw_data->get_arb_info(&info);
/* Reset arbiter configuration */
for (i = 0; i < ADF_ARB_NUM; i++)
WRITE_CSR_ARB_SARCONFIG(csr, arb_off, i, 0);
/* Unmap worker threads to service arbiters */
for (i = 0; i < hw_data->num_engines; i++)
WRITE_CSR_ARB_WT2SAM(csr, arb_off, wt_off, i, 0);