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%[email protected]/
[3] https://lore.kernel.org/lkml/5f3dd1d2.l1axczH+t4hMBZ63%[email protected]/
[4] https://lore.kernel.org/lkml/5f3e977a.mwYHUIObbR4SHr0B%[email protected]/
[5] https://lore.kernel.org/lkml/5f3f9e1c.qsyb%2FaySkiXNpkO4%[email protected]/

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

1 files changed, 5 insertions, 5 deletions

diff --git a/drivers/gpu/drm/i915/display/intel_cdclk.c b/drivers/gpu/drm/i915/display/intel_cdclk.c
index bb91dace304a..91a8161e7c05 100644
--- a/drivers/gpu/drm/i915/display/intel_cdclk.c
+++ b/drivers/gpu/drm/i915/display/intel_cdclk.c
@@ -326,7 +326,7 @@ static void pnv_get_cdclk(struct drm_i915_private *dev_priv,
 	default:
 		drm_err(&dev_priv->drm,
 			"Unknown pnv display core clock 0x%04x\n", gcfgc);
-		/* fall through */
+		fallthrough;
 	case GC_DISPLAY_CLOCK_133_MHZ_PNV:
 		cdclk_config->cdclk = 133333;
 		break;
@@ -766,7 +766,7 @@ static void bdw_set_cdclk(struct drm_i915_private *dev_priv,
 	switch (cdclk) {
 	default:
 		MISSING_CASE(cdclk);
-		/* fall through */
+		fallthrough;
 	case 337500:
 		val |= LCPLL_CLK_FREQ_337_5_BDW;
 		break;
@@ -1042,7 +1042,7 @@ static void skl_set_cdclk(struct drm_i915_private *dev_priv,
 		drm_WARN_ON(&dev_priv->drm,
 			    cdclk != dev_priv->cdclk.hw.bypass);
 		drm_WARN_ON(&dev_priv->drm, vco != 0);
-		/* fall through */
+		fallthrough;
 	case 308571:
 	case 337500:
 		freq_select = CDCLK_FREQ_337_308;
@@ -1333,7 +1333,7 @@ static void icl_readout_refclk(struct drm_i915_private *dev_priv,
 	switch (dssm) {
 	default:
 		MISSING_CASE(dssm);
-		/* fall through */
+		fallthrough;
 	case ICL_DSSM_CDCLK_PLL_REFCLK_24MHz:
 		cdclk_config->ref = 24000;
 		break;
@@ -1561,7 +1561,7 @@ static void bxt_set_cdclk(struct drm_i915_private *dev_priv,
 		drm_WARN_ON(&dev_priv->drm,
 			    cdclk != dev_priv->cdclk.hw.bypass);
 		drm_WARN_ON(&dev_priv->drm, vco != 0);
-		/* fall through */
+		fallthrough;
 	case 2:
 		divider = BXT_CDCLK_CD2X_DIV_SEL_1;
 		break;