Merge remote-tracking branch 'remotes/philmd-gitlab/tags/pflash-next-20190716' into staging

pflash-next patches for v4.1.0-rc1

Trivial pflash fixes for rc1.

# gpg: Signature made Tue 16 Jul 2019 16:59:53 BST
# gpg:                using RSA key E3E32C2CDEADC0DE
# gpg: Good signature from "Philippe Mathieu-Daudé (F4BUG) <f4bug@amsat.org>" [full]
# Primary key fingerprint: FAAB E75E 1291 7221 DCFD  6BB2 E3E3 2C2C DEAD C0DE

* remotes/philmd-gitlab/tags/pflash-next-20190716:
  hw/block/pflash_cfi01: Start state machine as READY to accept commands
  hw/block/pflash_cfi02: Explicit switch fallthrough for ERASE commands

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

hw/block/pflash_cfi01.c

@@ -777,7 +777,7 @@ static void pflash_cfi01_realize(DeviceState *dev, Error **errp)
     pfl->timer = timer_new_ns(QEMU_CLOCK_VIRTUAL, pflash_timer, pfl);
     pfl->wcycle = 0;
     pfl->cmd = 0;
-    pfl->status = 0;
+    pfl->status = 0x80; /* WSM ready */
     /* Hardcoded CFI table */
     /* Standard "QRY" string */
     pfl->cfi_table[0x10] = 'Q';

hw/block/pflash_cfi02.c

@@ -367,6 +367,7 @@ static uint64_t pflash_read(void *opaque, hwaddr offset, unsigned int width)
     case 0x30: /* Sector Erase */
         /* Toggle bit 2 during erase, but not program. */
         toggle_dq2(pfl);
+        /* fall through */
     case 0xA0: /* Program */
         /* Toggle bit 6 */
         toggle_dq6(pfl);