[PATCH v3 06/11] hw/sd/sdcard: Simplify cmd_valid_while_locked()

["Philippe Mathieu-Daudé" <philmd@redhat.com>]

From: Philippe Mathieu-Daudé <f4bug@amsat.org>

cmd_valid_while_locked() only needs to read SDRequest->cmd,
pass it directly and make it const.

Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
---
 hw/sd/sd.c | 11 +++++------
 1 file changed, 5 insertions(+), 6 deletions(-)

diff --git a/hw/sd/sd.c b/hw/sd/sd.c
index 9bfd65ac34..7799a3c621 100644
--- a/hw/sd/sd.c
+++ b/hw/sd/sd.c
@@ -1647,7 +1647,7 @@ static sd_rsp_type_t sd_app_command(SDState *sd,
     return sd_illegal;
 }
 
-static int cmd_valid_while_locked(SDState *sd, SDRequest *req)
+static int cmd_valid_while_locked(SDState *sd, const uint8_t cmd)
 {
     /* Valid commands in locked state:
      * basic class (0)
@@ -1658,13 +1658,12 @@ static int cmd_valid_while_locked(SDState *sd, SDRequest *req)
      * Anything else provokes an "illegal command" response.
      */
     if (sd->expecting_acmd) {
-        return req->cmd == 41 || req->cmd == 42;
+        return cmd == 41 || cmd == 42;
     }
-    if (req->cmd == 16 || req->cmd == 55) {
+    if (cmd == 16 || cmd == 55) {
         return 1;
     }
-    return sd_cmd_class[req->cmd] == 0
-            || sd_cmd_class[req->cmd] == 7;
+    return sd_cmd_class[cmd] == 0 || sd_cmd_class[cmd] == 7;
 }
 
 int sd_do_command(SDState *sd, SDRequest *req,
@@ -1690,7 +1689,7 @@ int sd_do_command(SDState *sd, SDRequest *req,
     }
 
     if (sd->card_status & CARD_IS_LOCKED) {
-        if (!cmd_valid_while_locked(sd, req)) {
+        if (!cmd_valid_while_locked(sd, req->cmd)) {
             sd->card_status |= ILLEGAL_COMMAND;
             sd->expecting_acmd = false;
             qemu_log_mask(LOG_GUEST_ERROR, "SD: Card is locked\n");
-- 
2.21.3