[RFC v2 2/7] hw/tpm: Refactor CRB_CTRL_START register access

[Arun Menon <armenon@redhat.com>]

Replace manual bitwise operations with ARRAY_FIELD_DP32 macros
No functional changes.

Signed-off-by: Arun Menon <armenon@redhat.com>
Reviewed-by: Stefan Berger <stefanb@linux.ibm.com>
---
 hw/tpm/tpm_crb.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/hw/tpm/tpm_crb.c b/hw/tpm/tpm_crb.c
index 0a1c7ecdc6..bc55908786 100644
--- a/hw/tpm/tpm_crb.c
+++ b/hw/tpm/tpm_crb.c
@@ -145,7 +145,7 @@ static void tpm_crb_mmio_write(void *opaque, hwaddr addr,
             tpm_crb_get_active_locty(s) == locty) {
             void *mem = memory_region_get_ram_ptr(&s->cmdmem);
 
-            s->regs[R_CRB_CTRL_START] |= CRB_START_INVOKE;
+            ARRAY_FIELD_DP32(s->regs, CRB_CTRL_START, invoke, 1);
             s->cmd = (TPMBackendCmd) {
                 .in = mem,
                 .in_len = MIN(tpm_cmd_get_size(mem), s->be_buffer_size),
@@ -194,7 +194,7 @@ static void tpm_crb_request_completed(TPMIf *ti, int ret)
 {
     CRBState *s = CRB(ti);
 
-    s->regs[R_CRB_CTRL_START] &= ~CRB_START_INVOKE;
+    ARRAY_FIELD_DP32(s->regs, CRB_CTRL_START, invoke, 0);
     if (ret != 0) {
         ARRAY_FIELD_DP32(s->regs, CRB_CTRL_STS,
                          tpmSts, 1); /* fatal error */
-- 
2.53.0