From: Michal Witwicki Date: Wed, 17 Jul 2024 11:44:59 +0000 (-0400) Subject: crypto: qat - ensure correct order in VF restarting handler X-Git-Tag: v6.12-rc1~231^2~90 X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=cd8d2d74292c199b433ef77762bb1d28a4821784;p=thirdparty%2Flinux.git crypto: qat - ensure correct order in VF restarting handler In the process of sending the ADF_PF2VF_MSGTYPE_RESTARTING message to Virtual Functions (VFs), the Physical Function (PF) should set the `vf->restarting` flag to true before dispatching the message. This change is necessary to prevent a race condition where the handling of the ADF_VF2PF_MSGTYPE_RESTARTING_COMPLETE message (which sets the `vf->restarting` flag to false) runs immediately after the message is sent, but before the flag is set to true. Set the `vf->restarting` to true before sending the message ADF_PF2VF_MSGTYPE_RESTARTING, if supported by the version of the protocol and if the VF is started. Fixes: ec26f8e6c784 ("crypto: qat - update PFVF protocol for recovery") Signed-off-by: Michal Witwicki Reviewed-by: Giovanni Cabiddu Reviewed-by: Przemek Kitszel Signed-off-by: Herbert Xu --- diff --git a/drivers/crypto/intel/qat/qat_common/adf_pfvf_pf_msg.c b/drivers/crypto/intel/qat/qat_common/adf_pfvf_pf_msg.c index 0e31f4b41844e..0cee3b23dee90 100644 --- a/drivers/crypto/intel/qat/qat_common/adf_pfvf_pf_msg.c +++ b/drivers/crypto/intel/qat/qat_common/adf_pfvf_pf_msg.c @@ -18,14 +18,17 @@ void adf_pf2vf_notify_restarting(struct adf_accel_dev *accel_dev) dev_dbg(&GET_DEV(accel_dev), "pf2vf notify restarting\n"); for (i = 0, vf = accel_dev->pf.vf_info; i < num_vfs; i++, vf++) { - vf->restarting = false; + if (vf->init && vf->vf_compat_ver >= ADF_PFVF_COMPAT_FALLBACK) + vf->restarting = true; + else + vf->restarting = false; + if (!vf->init) continue; + if (adf_send_pf2vf_msg(accel_dev, i, msg)) dev_err(&GET_DEV(accel_dev), "Failed to send restarting msg to VF%d\n", i); - else if (vf->vf_compat_ver >= ADF_PFVF_COMPAT_FALLBACK) - vf->restarting = true; } }