[PATCH 5.4 106/110] crypto: caam - do not reset pointer size from MCFGR register

From: Greg Kroah-Hartman
Date: Thu Jan 30 2020 - 13:51:05 EST


From: Iuliana Prodan <iuliana.prodan@xxxxxxx>

commit 7278fa25aa0ebcc0e62c39b12071069df13f7e77 upstream.

In commit 'a1cf573ee95 ("crypto: caam - select DMA address size at runtime")'
CAAM pointer size (caam_ptr_size) is changed from
sizeof(dma_addr_t) to runtime value computed from MCFGR register.
Therefore, do not reset MCFGR[PS].

Fixes: a1cf573ee95 ("crypto: caam - select DMA address size at runtime")
Signed-off-by: Iuliana Prodan <iuliana.prodan@xxxxxxx>
Cc: <stable@xxxxxxxxxxxxxxx>
Cc: Andrey Smirnov <andrew.smirnov@xxxxxxxxx>
Cc: Alison Wang <alison.wang@xxxxxxx>
Reviewed-by: Horia GeantÄ <horia.geanta@xxxxxxx>
Signed-off-by: Herbert Xu <herbert@xxxxxxxxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>

---
drivers/crypto/caam/ctrl.c | 6 ++----
1 file changed, 2 insertions(+), 4 deletions(-)

--- a/drivers/crypto/caam/ctrl.c
+++ b/drivers/crypto/caam/ctrl.c
@@ -685,11 +685,9 @@ static int caam_probe(struct platform_de
of_node_put(np);

if (!ctrlpriv->mc_en)
- clrsetbits_32(&ctrl->mcr, MCFGR_AWCACHE_MASK | MCFGR_LONG_PTR,
+ clrsetbits_32(&ctrl->mcr, MCFGR_AWCACHE_MASK,
MCFGR_AWCACHE_CACH | MCFGR_AWCACHE_BUFF |
- MCFGR_WDENABLE | MCFGR_LARGE_BURST |
- (sizeof(dma_addr_t) == sizeof(u64) ?
- MCFGR_LONG_PTR : 0));
+ MCFGR_WDENABLE | MCFGR_LARGE_BURST);

handle_imx6_err005766(&ctrl->mcr);