CD-ROM: Re-enable CRC checking and disable the usage of the ARM CRC32 instruction.

src/cdrom/cdrom.c

@@ -345,7 +345,6 @@ cdrom_is_sector_good(cdrom_t *dev, const uint8_t *b, const uint8_t mode2, const
     int            ret = 1;
 
     if (!mode2 || (form != 1)) {
-#ifdef TEMPORARILY_DISABLE_CRC_CHECKING
         if (mode2 && (form == 1)) {
             const uint32_t crc = cdrom_crc32(0xffffffff, &(b[16]), 2056) ^ 0xffffffff;
 
@@ -355,7 +354,6 @@ cdrom_is_sector_good(cdrom_t *dev, const uint8_t *b, const uint8_t mode2, const
 
             ret = ret && (crc == (*(uint32_t *) &(b[2064])));
         }
-#endif
 
         cdrom_generate_ecc_data(dev, &(b[12]), mode2 && (form == 1));
 

src/utils/crc32.c

@@ -103,17 +103,23 @@
 #  endif
 #endif
 
+/*
+   #ifdef this out because that code path does not currently produce the
+   correct results.
+ */
+#ifdef USE_ARMCRC32
 /* If available, use the ARM processor CRC32 instruction. */
 #if defined(__aarch64__) && defined(__ARM_FEATURE_CRC32) && W == 8
 #  define ARMCRC32
 #endif
+#endif
 
 #if defined(W) && (!defined(ARMCRC32) || defined(DYNAMIC_CRC_TABLE))
 /*
-  Swap the bytes in a word_t to convert between little and big endian. Any
-  self-respecting compiler will optimize this to a single machine byte-swap
-  instruction, if one is available. This assumes that word_t is either 32 bits
-  or 64 bits.
+   Swap the bytes in a word_t to convert between little and big endian. Any
+   self-respecting compiler will optimize this to a single machine byte-swap
+   instruction, if one is available. This assumes that word_t is either 32 bits
+   or 64 bits.
  */
 static word_t byte_swap(word_t word) {
 #  if W == 8