crypto: qat - remove access to parity register for QAT GEN4

[ Upstream commit 92c6a707d82f0629debf1c21dd87717776d96af2 ]

The firmware already handles parity errors reported by the accelerators
by clearing them through the corresponding SSMSOFTERRORPARITY register.
To ensure consistent behavior and prevent race conditions between the
driver and firmware, remove the logic that checks the SSMSOFTERRORPARITY
registers.

Additionally, change the return type of the function
adf_handle_rf_parr_err() to void, as it consistently returns false.
Parity errors are recoverable and do not necessitate a device reset.

Fixes: 895f7d532c84 ("crypto: qat - add handling of errors from ERRSOU2 for QAT GEN4")
Signed-off-by: Bairavi Alagappan <bairavix.alagappan@intel.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-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>

1 files changed, 5 insertions, 52 deletions

diff --git a/drivers/crypto/intel/qat/qat_common/adf_gen4_ras.c b/drivers/crypto/intel/qat/qat_common/adf_gen4_ras.c
index bf0ea09faa65..0f7f00a19e7d 100644
--- a/drivers/crypto/intel/qat/qat_common/adf_gen4_ras.c
+++ b/drivers/crypto/intel/qat/qat_common/adf_gen4_ras.c
@@ -1043,63 +1043,16 @@ static bool adf_handle_ssmcpppar_err(struct adf_accel_dev *accel_dev,
 	return reset_required;
 }
 
-static bool adf_handle_rf_parr_err(struct adf_accel_dev *accel_dev,
+static void adf_handle_rf_parr_err(struct adf_accel_dev *accel_dev,
 				   void __iomem *csr, u32 iastatssm)
 {
-	struct adf_dev_err_mask *err_mask = GET_ERR_MASK(accel_dev);
-	u32 reg;
-
 	if (!(iastatssm & ADF_GEN4_IAINTSTATSSM_SSMSOFTERRORPARITY_BIT))
-		return false;
-
-	reg = ADF_CSR_RD(csr, ADF_GEN4_SSMSOFTERRORPARITY_SRC);
-	reg &= ADF_GEN4_SSMSOFTERRORPARITY_SRC_BIT;
-	if (reg) {
-		ADF_RAS_ERR_CTR_INC(accel_dev->ras_errors, ADF_RAS_UNCORR);
-		ADF_CSR_WR(csr, ADF_GEN4_SSMSOFTERRORPARITY_SRC, reg);
-	}
-
-	reg = ADF_CSR_RD(csr, ADF_GEN4_SSMSOFTERRORPARITY_ATH_CPH);
-	reg &= err_mask->parerr_ath_cph_mask;
-	if (reg) {
-		ADF_RAS_ERR_CTR_INC(accel_dev->ras_errors, ADF_RAS_UNCORR);
-		ADF_CSR_WR(csr, ADF_GEN4_SSMSOFTERRORPARITY_ATH_CPH, reg);
-	}
-
-	reg = ADF_CSR_RD(csr, ADF_GEN4_SSMSOFTERRORPARITY_CPR_XLT);
-	reg &= err_mask->parerr_cpr_xlt_mask;
-	if (reg) {
-		ADF_RAS_ERR_CTR_INC(accel_dev->ras_errors, ADF_RAS_UNCORR);
-		ADF_CSR_WR(csr, ADF_GEN4_SSMSOFTERRORPARITY_CPR_XLT, reg);
-	}
-
-	reg = ADF_CSR_RD(csr, ADF_GEN4_SSMSOFTERRORPARITY_DCPR_UCS);
-	reg &= err_mask->parerr_dcpr_ucs_mask;
-	if (reg) {
-		ADF_RAS_ERR_CTR_INC(accel_dev->ras_errors, ADF_RAS_UNCORR);
-		ADF_CSR_WR(csr, ADF_GEN4_SSMSOFTERRORPARITY_DCPR_UCS, reg);
-	}
-
-	reg = ADF_CSR_RD(csr, ADF_GEN4_SSMSOFTERRORPARITY_PKE);
-	reg &= err_mask->parerr_pke_mask;
-	if (reg) {
-		ADF_RAS_ERR_CTR_INC(accel_dev->ras_errors, ADF_RAS_UNCORR);
-		ADF_CSR_WR(csr, ADF_GEN4_SSMSOFTERRORPARITY_PKE, reg);
-	}
-
-	if (err_mask->parerr_wat_wcp_mask) {
-		reg = ADF_CSR_RD(csr, ADF_GEN4_SSMSOFTERRORPARITY_WAT_WCP);
-		reg &= err_mask->parerr_wat_wcp_mask;
-		if (reg) {
-			ADF_RAS_ERR_CTR_INC(accel_dev->ras_errors, ADF_RAS_UNCORR);
-			ADF_CSR_WR(csr, ADF_GEN4_SSMSOFTERRORPARITY_WAT_WCP,
-				   reg);
-		}
-	}
+		return;
 
+	ADF_RAS_ERR_CTR_INC(accel_dev->ras_errors, ADF_RAS_UNCORR);
 	dev_err(&GET_DEV(accel_dev), "Slice ssm soft parity error reported");
 
-	return false;
+	return;
 }
 
 static bool adf_handle_ser_err_ssmsh(struct adf_accel_dev *accel_dev,
@@ -1171,8 +1124,8 @@ static bool adf_handle_iaintstatssm(struct adf_accel_dev *accel_dev,
 	reset_required |= adf_handle_slice_hang_error(accel_dev, csr, iastatssm);
 	reset_required |= adf_handle_spppar_err(accel_dev, csr, iastatssm);
 	reset_required |= adf_handle_ssmcpppar_err(accel_dev, csr, iastatssm);
-	reset_required |= adf_handle_rf_parr_err(accel_dev, csr, iastatssm);
 	reset_required |= adf_handle_ser_err_ssmsh(accel_dev, csr, iastatssm);
+	adf_handle_rf_parr_err(accel_dev, csr, iastatssm);
 
 	ADF_CSR_WR(csr, ADF_GEN4_IAINTSTATSSM, iastatssm);