When multiple devices are present in the system the driver attempts
to register the same algorithm many times.
Signed-off-by: Tadeusz Struk <tadeusz.struk@xxxxxxxxx>
---
drivers/crypto/qat/qat_common/qat_asym_algs.c | 13 ++++++++++---
1 file changed, 10 insertions(+), 3 deletions(-)
diff --git a/drivers/crypto/qat/qat_common/qat_asym_algs.c b/drivers/crypto/qat/qat_common/qat_asym_algs.c
index 557a740..3e3c5c8 100644
--- a/drivers/crypto/qat/qat_common/qat_asym_algs.c
+++ b/drivers/crypto/qat/qat_common/qat_asym_algs.c
@@ -58,6 +58,8 @@
#include "adf_common_drv.h"
#include "qat_crypto.h"
+static atomic_t active_devs;
+
struct qat_rsa_input_params {
union {
struct {
@@ -629,11 +631,16 @@ static struct akcipher_alg rsa = {
int qat_asym_algs_register(void)
{
- rsa.base.cra_flags = 0;
- return crypto_register_akcipher(&rsa);
+ if (atomic_add_return(1, &active_devs) == 1) {
+ rsa.base.cra_flags = 0;
+ return crypto_register_akcipher(&rsa);
+ }
+
+ return 0;
}
void qat_asym_algs_unregister(void)
{
- crypto_unregister_akcipher(&rsa);
+ if (atomic_sub_return(1, &active_devs) == 0)
+ crypto_unregister_akcipher(&rsa);
}
--
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