crypto: caam - fix pointer size for AArch64 boot loader, AArch32 kernel

Start with a clean slate before dealing with bit 16 (pointer size)
of Master Configuration Register.
This fixes the case of AArch64 boot loader + AArch32 kernel, when
the boot loader might set MCFGR[PS] and kernel would fail to clear it.

Cc: <stable@vger.kernel.org>
Reported-by: Alison Wang <alison.wang@nxp.com>
Signed-off-by: Horia Geantă <horia.geanta@nxp.com>
Reviewed-By: Alison Wang <Alison.wang@nxp.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

1 files changed, 3 insertions, 2 deletions

diff --git a/drivers/crypto/caam/ctrl.c b/drivers/crypto/caam/ctrl.c
index 72ff19658985..e483b78c6343 100644
--- a/drivers/crypto/caam/ctrl.c
+++ b/drivers/crypto/caam/ctrl.c
@@ -558,8 +558,9 @@ static int caam_probe(struct platform_device *pdev)
          * Enable DECO watchdogs and, if this is a PHYS_ADDR_T_64BIT kernel,
          * long pointers in master configuration register
          */
-        clrsetbits_32(&ctrl->mcr, MCFGR_AWCACHE_MASK, MCFGR_AWCACHE_CACH |
-                      MCFGR_AWCACHE_BUFF | MCFGR_WDENABLE | MCFGR_LARGE_BURST |
+        clrsetbits_32(&ctrl->mcr, MCFGR_AWCACHE_MASK | MCFGR_LONG_PTR,
+                      MCFGR_AWCACHE_CACH | MCFGR_AWCACHE_BUFF |
+                      MCFGR_WDENABLE | MCFGR_LARGE_BURST |
                       (sizeof(dma_addr_t) == sizeof(u64) ? MCFGR_LONG_PTR : 0));
 
         /*