[PATCH] crypto: qat - fix error path in adf_isr_resource_alloc()

[PATCH] crypto: qat - fix error path in adf_isr_resource_alloc()

[Giovanni Cabiddu]

The function adf_isr_resource_alloc() is not unwinding correctly in case
of error.
This patch fixes the error paths and propagate the errors to the caller.

Fixes: 7afa232e76ce ("crypto: qat - Intel(R) QAT DH895xcc accelerator")
Signed-off-by: Giovanni Cabiddu <giovanni.cabiddu@intel.com>
Reviewed-by: Marco Chiappero <marco.chiappero@intel.com>
---
 drivers/crypto/qat/qat_common/adf_isr.c | 29 ++++++++++++++++++-------
 1 file changed, 21 insertions(+), 8 deletions(-)

diff --git a/drivers/crypto/qat/qat_common/adf_isr.c b/drivers/crypto/qat/qat_common/adf_isr.c
index c45853463530..e3ad5587be49 100644
--- a/drivers/crypto/qat/qat_common/adf_isr.c
+++ b/drivers/crypto/qat/qat_common/adf_isr.c
@@ -291,19 +291,32 @@ int adf_isr_resource_alloc(struct adf_accel_dev *accel_dev)
 
 	ret = adf_isr_alloc_msix_entry_table(accel_dev);
 	if (ret)
-		return ret;
-	if (adf_enable_msix(accel_dev))
 		goto err_out;
 
-	if (adf_setup_bh(accel_dev))
-		goto err_out;
+	ret = adf_enable_msix(accel_dev);
+	if (ret)
+		goto err_free_msix_table;
 
-	if (adf_request_irqs(accel_dev))
-		goto err_out;
+	ret = adf_setup_bh(accel_dev);
+	if (ret)
+		goto err_disable_msix;
+
+	ret = adf_request_irqs(accel_dev);
+	if (ret)
+		goto err_cleanup_bh;
 
 	return 0;
+
+err_cleanup_bh:
+	adf_cleanup_bh(accel_dev);
+
+err_disable_msix:
+	adf_disable_msix(&accel_dev->accel_pci_dev);
+
+err_free_msix_table:
+	adf_isr_free_msix_entry_table(accel_dev);
+
 err_out:
-	adf_isr_resource_free(accel_dev);
-	return -EFAULT;
+	return ret;
 }
 EXPORT_SYMBOL_GPL(adf_isr_resource_alloc);
-- 
2.30.2

Re: [PATCH] crypto: qat - fix error path in adf_isr_resource_alloc()

[Herbert Xu]

On Thu, Mar 25, 2021 at 08:34:18AM +0000, Giovanni Cabiddu wrote:
> The function adf_isr_resource_alloc() is not unwinding correctly in case
> of error.
> This patch fixes the error paths and propagate the errors to the caller.
> 
> Fixes: 7afa232e76ce ("crypto: qat - Intel(R) QAT DH895xcc accelerator")
> Signed-off-by: Giovanni Cabiddu <giovanni.cabiddu@intel.com>
> Reviewed-by: Marco Chiappero <marco.chiappero@intel.com>
> ---
>  drivers/crypto/qat/qat_common/adf_isr.c | 29 ++++++++++++++++++-------
>  1 file changed, 21 insertions(+), 8 deletions(-)

Patch applied.  Thanks.
-- 
Email: Herbert Xu <herbert@gondor.apana.org.au>
Home Page: http://gondor.apana.org.au/~herbert/
PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt