From: Ard Biesheuvel ardb@kernel.org
commit 11548f5a5747813ff84bed6f2ea01100053b0d8d upstream.
AMD Seattle incorporates a non-PCI version of the v3 CCP crypto accelerator, and this version was left behind when the maximum RSA modulus size was parameterized in order to support v5 hardware which supports larger moduli than v3 hardware does. Due to this oversight, RSA acceleration no longer works at all on these systems.
Fix this by setting the .rsamax property to the appropriate value for v3 platform hardware.
Fixes: e28c190db66830c0 ("csrypto: ccp - Expand RSA support for a v5 ccp") Cc: Gary R Hook gary.hook@amd.com Signed-off-by: Ard Biesheuvel ardb@kernel.org Acked-by: Gary R Hook gary.hook@amd.com Signed-off-by: Herbert Xu herbert@gondor.apana.org.au Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org
--- drivers/crypto/ccp/ccp-dev-v3.c | 1 + 1 file changed, 1 insertion(+)
--- a/drivers/crypto/ccp/ccp-dev-v3.c +++ b/drivers/crypto/ccp/ccp-dev-v3.c @@ -586,6 +586,7 @@ const struct ccp_vdata ccpv3_platform = .setup = NULL, .perform = &ccp3_actions, .offset = 0, + .rsamax = CCP_RSA_MAX_WIDTH, };
const struct ccp_vdata ccpv3 = {