Merge tag 'fallthrough-pseudo-keyword-5.9-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gustavoars/linux

Pull 'fallthrough' keyword conversion from Gustavo A. R. Silva:
 "A tree-wide patch that replaces tons (2484) of /* fall through */
  comments, and its variants, with the new pseudo-keyword macro
  fallthrough[1]. Also, remove unnecessary fall-through markings when it
  is the case.

  There are currently 1167 intances of this fallthrough pseudo-keyword
  macro in mainline (5.9-rc2), that have been introduced over the last
  couple of development cycles:

    $ git grep -nw 'fallthrough;' | wc -l
    1167

  The global adoption of the fallthrough pseudo-keyword is something
  certain to happen; so, better sooner than later. :) This will also
  save everybody's time and thousands of lines of unnecessarily
  repetitive changelog text.

  After applying this patch on top of 5.9-rc2, we'll have a total of
  3651 instances of this macro:

    $ git grep -nw 'fallthrough;' | wc -l
    3651

  This treewide patch doesn't address ALL fall-through markings in all
  subsystems at once because I have previously sent out patches for some
  of such subsystems separately, and I will follow up on them; however,
  this definitely contributes most of the work needed to replace all the
  fall-through markings with the fallthrough pseudo-keyword macro in the
  whole codebase.

  I have build-tested this patch on 10 different architectures: x86_64,
  i386, arm64, powerpc, s390, sparc64, sh, m68k, powerpc64 and alpha
  (allyesconfig for all of them). This is in linux-next already and
  kernel test robot has also helped me to successfully build-test early
  versions of this patch[2][3][4][5]"

[1] https://www.kernel.org/doc/html/v5.7/process/deprecated.html?highlight=fallthrough#implicit-switch-case-fall-through
[2] https://lore.kernel.org/lkml/5f3cc99a.HgvOW3rH0mD0RmkM%25lkp@intel.com/
[3] https://lore.kernel.org/lkml/5f3dd1d2.l1axczH+t4hMBZ63%25lkp@intel.com/
[4] https://lore.kernel.org/lkml/5f3e977a.mwYHUIObbR4SHr0B%25lkp@intel.com/
[5] https://lore.kernel.org/lkml/5f3f9e1c.qsyb%2FaySkiXNpkO4%25lkp@intel.com/

* tag 'fallthrough-pseudo-keyword-5.9-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gustavoars/linux:
  treewide: Use fallthrough pseudo-keyword

2 files changed, 58 insertions, 58 deletions

diff --git a/crypto/drbg.c b/crypto/drbg.c
index e99fe34c..3132967a 100644
--- a/crypto/drbg.c
+++ b/crypto/drbg.c
@@ -1521,7 +1521,7 @@ static int drbg_prepare_hrng(struct drbg_state *drbg)
 
 	case -EALREADY:
 		err = 0;
-		/* fall through */
+		fallthrough;
 
 	default:
 		drbg->random_ready.func = NULL;
diff --git a/crypto/tcrypt.c b/crypto/tcrypt.c
index ba0b7702..12e82a61 100644
--- a/crypto/tcrypt.c
+++ b/crypto/tcrypt.c
@@ -2348,121 +2348,121 @@ static int do_test(const char *alg, u32 type, u32 mask, int m, u32 num_mb)
 			test_hash_speed(alg, sec, generic_hash_speed_template);
 			break;
 		}
-		/* fall through */
+		fallthrough;
 	case 301:
 		test_hash_speed("md4", sec, generic_hash_speed_template);
 		if (mode > 300 && mode < 400) break;
-		/* fall through */
+		fallthrough;
 	case 302:
 		test_hash_speed("md5", sec, generic_hash_speed_template);
 		if (mode > 300 && mode < 400) break;
-		/* fall through */
+		fallthrough;
 	case 303:
 		test_hash_speed("sha1", sec, generic_hash_speed_template);
 		if (mode > 300 && mode < 400) break;
-		/* fall through */
+		fallthrough;
 	case 304:
 		test_hash_speed("sha256", sec, generic_hash_speed_template);
 		if (mode > 300 && mode < 400) break;
-		/* fall through */
+		fallthrough;
 	case 305:
 		test_hash_speed("sha384", sec, generic_hash_speed_template);
 		if (mode > 300 && mode < 400) break;
-		/* fall through */
+		fallthrough;
 	case 306:
 		test_hash_speed("sha512", sec, generic_hash_speed_template);
 		if (mode > 300 && mode < 400) break;
-		/* fall through */
+		fallthrough;
 	case 307:
 		test_hash_speed("wp256", sec, generic_hash_speed_template);
 		if (mode > 300 && mode < 400) break;
-		/* fall through */
+		fallthrough;
 	case 308:
 		test_hash_speed("wp384", sec, generic_hash_speed_template);
 		if (mode > 300 && mode < 400) break;
-		/* fall through */
+		fallthrough;
 	case 309:
 		test_hash_speed("wp512", sec, generic_hash_speed_template);
 		if (mode > 300 && mode < 400) break;
-		/* fall through */
+		fallthrough;
 	case 310:
 		test_hash_speed("tgr128", sec, generic_hash_speed_template);
 		if (mode > 300 && mode < 400) break;
-		/* fall through */
+		fallthrough;
 	case 311:
 		test_hash_speed("tgr160", sec, generic_hash_speed_template);
 		if (mode > 300 && mode < 400) break;
-		/* fall through */
+		fallthrough;
 	case 312:
 		test_hash_speed("tgr192", sec, generic_hash_speed_template);
 		if (mode > 300 && mode < 400) break;
-		/* fall through */
+		fallthrough;
 	case 313:
 		test_hash_speed("sha224", sec, generic_hash_speed_template);
 		if (mode > 300 && mode < 400) break;
-		/* fall through */
+		fallthrough;
 	case 314:
 		test_hash_speed("rmd128", sec, generic_hash_speed_template);
 		if (mode > 300 && mode < 400) break;
-		/* fall through */
+		fallthrough;
 	case 315:
 		test_hash_speed("rmd160", sec, generic_hash_speed_template);
 		if (mode > 300 && mode < 400) break;
-		/* fall through */
+		fallthrough;
 	case 316:
 		test_hash_speed("rmd256", sec, generic_hash_speed_template);
 		if (mode > 300 && mode < 400) break;
-		/* fall through */
+		fallthrough;
 	case 317:
 		test_hash_speed("rmd320", sec, generic_hash_speed_template);
 		if (mode > 300 && mode < 400) break;
-		/* fall through */
+		fallthrough;
 	case 318:
 		test_hash_speed("ghash-generic", sec, hash_speed_template_16);
 		if (mode > 300 && mode < 400) break;
-		/* fall through */
+		fallthrough;
 	case 319:
 		test_hash_speed("crc32c", sec, generic_hash_speed_template);
 		if (mode > 300 && mode < 400) break;
-		/* fall through */
+		fallthrough;
 	case 320:
 		test_hash_speed("crct10dif", sec, generic_hash_speed_template);
 		if (mode > 300 && mode < 400) break;
-		/* fall through */
+		fallthrough;
 	case 321:
 		test_hash_speed("poly1305", sec, poly1305_speed_template);
 		if (mode > 300 && mode < 400) break;
-		/* fall through */
+		fallthrough;
 	case 322:
 		test_hash_speed("sha3-224", sec, generic_hash_speed_template);
 		if (mode > 300 && mode < 400) break;
-		/* fall through */
+		fallthrough;
 	case 323:
 		test_hash_speed("sha3-256", sec, generic_hash_speed_template);
 		if (mode > 300 && mode < 400) break;
-		/* fall through */
+		fallthrough;
 	case 324:
 		test_hash_speed("sha3-384", sec, generic_hash_speed_template);
 		if (mode > 300 && mode < 400) break;
-		/* fall through */
+		fallthrough;
 	case 325:
 		test_hash_speed("sha3-512", sec, generic_hash_speed_template);
 		if (mode > 300 && mode < 400) break;
-		/* fall through */
+		fallthrough;
 	case 326:
 		test_hash_speed("sm3", sec, generic_hash_speed_template);
 		if (mode > 300 && mode < 400) break;
-		/* fall through */
+		fallthrough;
 	case 327:
 		test_hash_speed("streebog256", sec,
 				generic_hash_speed_template);
 		if (mode > 300 && mode < 400) break;
-		/* fall through */
+		fallthrough;
 	case 328:
 		test_hash_speed("streebog512", sec,
 				generic_hash_speed_template);
 		if (mode > 300 && mode < 400) break;
-		/* fall through */
+		fallthrough;
 	case 399:
 		break;
 
@@ -2471,121 +2471,121 @@ static int do_test(const char *alg, u32 type, u32 mask, int m, u32 num_mb)
 			test_ahash_speed(alg, sec, generic_hash_speed_template);
 			break;
 		}
-		/* fall through */
+		fallthrough;
 	case 401:
 		test_ahash_speed("md4", sec, generic_hash_speed_template);
 		if (mode > 400 && mode < 500) break;
-		/* fall through */
+		fallthrough;
 	case 402:
 		test_ahash_speed("md5", sec, generic_hash_speed_template);
 		if (mode > 400 && mode < 500) break;
-		/* fall through */
+		fallthrough;
 	case 403:
 		test_ahash_speed("sha1", sec, generic_hash_speed_template);
 		if (mode > 400 && mode < 500) break;
-		/* fall through */
+		fallthrough;
 	case 404:
 		test_ahash_speed("sha256", sec, generic_hash_speed_template);
 		if (mode > 400 && mode < 500) break;
-		/* fall through */
+		fallthrough;
 	case 405:
 		test_ahash_speed("sha384", sec, generic_hash_speed_template);
 		if (mode > 400 && mode < 500) break;
-		/* fall through */
+		fallthrough;
 	case 406:
 		test_ahash_speed("sha512", sec, generic_hash_speed_template);
 		if (mode > 400 && mode < 500) break;
-		/* fall through */
+		fallthrough;
 	case 407:
 		test_ahash_speed("wp256", sec, generic_hash_speed_template);
 		if (mode > 400 && mode < 500) break;
-		/* fall through */
+		fallthrough;
 	case 408:
 		test_ahash_speed("wp384", sec, generic_hash_speed_template);
 		if (mode > 400 && mode < 500) break;
-		/* fall through */
+		fallthrough;
 	case 409:
 		test_ahash_speed("wp512", sec, generic_hash_speed_template);
 		if (mode > 400 && mode < 500) break;
-		/* fall through */
+		fallthrough;
 	case 410:
 		test_ahash_speed("tgr128", sec, generic_hash_speed_template);
 		if (mode > 400 && mode < 500) break;
-		/* fall through */
+		fallthrough;
 	case 411:
 		test_ahash_speed("tgr160", sec, generic_hash_speed_template);
 		if (mode > 400 && mode < 500) break;
-		/* fall through */
+		fallthrough;
 	case 412:
 		test_ahash_speed("tgr192", sec, generic_hash_speed_template);
 		if (mode > 400 && mode < 500) break;
-		/* fall through */
+		fallthrough;
 	case 413:
 		test_ahash_speed("sha224", sec, generic_hash_speed_template);
 		if (mode > 400 && mode < 500) break;
-		/* fall through */
+		fallthrough;
 	case 414:
 		test_ahash_speed("rmd128", sec, generic_hash_speed_template);
 		if (mode > 400 && mode < 500) break;
-		/* fall through */
+		fallthrough;
 	case 415:
 		test_ahash_speed("rmd160", sec, generic_hash_speed_template);
 		if (mode > 400 && mode < 500) break;
-		/* fall through */
+		fallthrough;
 	case 416:
 		test_ahash_speed("rmd256", sec, generic_hash_speed_template);
 		if (mode > 400 && mode < 500) break;
-		/* fall through */
+		fallthrough;
 	case 417:
 		test_ahash_speed("rmd320", sec, generic_hash_speed_template);
 		if (mode > 400 && mode < 500) break;
-		/* fall through */
+		fallthrough;
 	case 418:
 		test_ahash_speed("sha3-224", sec, generic_hash_speed_template);
 		if (mode > 400 && mode < 500) break;
-		/* fall through */
+		fallthrough;
 	case 419:
 		test_ahash_speed("sha3-256", sec, generic_hash_speed_template);
 		if (mode > 400 && mode < 500) break;
-		/* fall through */
+		fallthrough;
 	case 420:
 		test_ahash_speed("sha3-384", sec, generic_hash_speed_template);
 		if (mode > 400 && mode < 500) break;
-		/* fall through */
+		fallthrough;
 	case 421:
 		test_ahash_speed("sha3-512", sec, generic_hash_speed_template);
 		if (mode > 400 && mode < 500) break;
-		/* fall through */
+		fallthrough;
 	case 422:
 		test_mb_ahash_speed("sha1", sec, generic_hash_speed_template,
 				    num_mb);
 		if (mode > 400 && mode < 500) break;
-		/* fall through */
+		fallthrough;
 	case 423:
 		test_mb_ahash_speed("sha256", sec, generic_hash_speed_template,
 				    num_mb);
 		if (mode > 400 && mode < 500) break;
-		/* fall through */
+		fallthrough;
 	case 424:
 		test_mb_ahash_speed("sha512", sec, generic_hash_speed_template,
 				    num_mb);
 		if (mode > 400 && mode < 500) break;
-		/* fall through */
+		fallthrough;
 	case 425:
 		test_mb_ahash_speed("sm3", sec, generic_hash_speed_template,
 				    num_mb);
 		if (mode > 400 && mode < 500) break;
-		/* fall through */
+		fallthrough;
 	case 426:
 		test_mb_ahash_speed("streebog256", sec,
 				    generic_hash_speed_template, num_mb);
 		if (mode > 400 && mode < 500) break;
-		/* fall through */
+		fallthrough;
 	case 427:
 		test_mb_ahash_speed("streebog512", sec,
 				    generic_hash_speed_template, num_mb);
 		if (mode > 400 && mode < 500) break;
-		/* fall through */
+		fallthrough;
 	case 499:
 		break;