OpenCloudOS-Kernel/drivers/iommu/arm
Linus Torvalds e9338abf0e fallthrough fixes for Clang for 5.14-rc2
Hi Linus,
 
 Please, pull the following patches that fix many fall-through
 warnings when building with Clang and -Wimplicit-fallthrough.
 
 This pull-request also contains the patch for Makefile that enables
 -Wimplicit-fallthrough for Clang, globally.
 
 It's also important to notice that since we have adopted the use of
 the pseudo-keyword macro fallthrough; we also want to avoid having
 more /* fall through */ comments being introduced. Notice that contrary
 to GCC, Clang doesn't recognize any comments as implicit fall-through
 markings when the -Wimplicit-fallthrough option is enabled. So, in
 order to avoid having more comments being introduced, we have to use
 the option -Wimplicit-fallthrough=5 for GCC, which similar to Clang,
 will cause a warning in case a code comment is intended to be used
 as a fall-through marking. The patch for Makefile also enforces this.
 
 We had almost 4,000 of these issues for Clang in the beginning,
 and there might be a couple more out there when building some
 architectures with certain configurations. However, with the
 recent fixes I think we are in good shape and it is now possible
 to enable -Wimplicit-fallthrough for Clang. :)
 
 Thanks!
 -----BEGIN PGP SIGNATURE-----
 
 iQIzBAABCAAdFiEEkmRahXBSurMIg1YvRwW0y0cG2zEFAmDvPV0ACgkQRwW0y0cG
 2zGJ1xAAsbSN8I+ESxFCKi4UwQC71988isb0rHGL6rQPBbEYD2bbI+82aGu6WH8z
 2ZVQZa5x3tUoIsqR2GMK5Npn1dFvuNWGZkYzlgjAp+FgzaULCLUc4NW9DEWU/Kbd
 UBz8ilXL7tUAlDalUYjXAVVTxMnRTZ+BDCbEmIdRZ5X/pMlD2xHeMGG4kh8/cHjJ
 +mqFwCFPZoyLJzPBnm37OEfIr8JxrLZAo1gfmz5sxfmBdYDY3hjV/BVgP8h0bkY9
 ITaq0LMEAPMXvU+4DP3DxuqzRr9COYMcddmbaWwsXPd7UAuoXwGLvqx7JE0QqY3g
 J80w4/hXqEa4o4/fUAsfjYEQoNTEnhl0iGskBJD2xy5Lj17/m4aOSL44ibr2Ag67
 yfJPWi9tooYELEGNobPVHPuqk4ts6amKTOKqHWMBEcTEOIGzaGWPEjRoyaMivfZ3
 G3ZbEPEYERcJRizm63UbciLeslGsxb6tdYQEy5VI8Wa7caz9Ci9HT+jjS7Vm2fuq
 1zg+vIgwuSxvwxrSV/PDTRcQm9EM/MoRL0D4jbr7gtYD6KNwH8Vo6M21CoaB9gH3
 FgMiCT4zy9KiONjVDJKkjtzuk+9OwpI5AAg0/fAQ4Ak9TzUN3Xfg7HpytETCIJ0Z
 Ii3Jqwe+3IRTNq94ZTIiX/0hT7i5GsPxUfPzI2vwttCJn9ctUcM=
 =XVNN
 -----END PGP SIGNATURE-----

Merge tag 'Wimplicit-fallthrough-clang-5.14-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/gustavoars/linux

Pull fallthrough fixes from Gustavo Silva:
 "This fixes many fall-through warnings when building with Clang and
  -Wimplicit-fallthrough, and also enables -Wimplicit-fallthrough for
  Clang, globally.

  It's also important to notice that since we have adopted the use of
  the pseudo-keyword macro fallthrough, we also want to avoid having
  more /* fall through */ comments being introduced. Contrary to GCC,
  Clang doesn't recognize any comments as implicit fall-through markings
  when the -Wimplicit-fallthrough option is enabled.

  So, in order to avoid having more comments being introduced, we use
  the option -Wimplicit-fallthrough=5 for GCC, which similar to Clang,
  will cause a warning in case a code comment is intended to be used as
  a fall-through marking. The patch for Makefile also enforces this.

  We had almost 4,000 of these issues for Clang in the beginning, and
  there might be a couple more out there when building some
  architectures with certain configurations. However, with the recent
  fixes I think we are in good shape and it is now possible to enable
  the warning for Clang"

* tag 'Wimplicit-fallthrough-clang-5.14-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/gustavoars/linux: (27 commits)
  Makefile: Enable -Wimplicit-fallthrough for Clang
  powerpc/smp: Fix fall-through warning for Clang
  dmaengine: mpc512x: Fix fall-through warning for Clang
  usb: gadget: fsl_qe_udc: Fix fall-through warning for Clang
  powerpc/powernv: Fix fall-through warning for Clang
  MIPS: Fix unreachable code issue
  MIPS: Fix fall-through warnings for Clang
  ASoC: Mediatek: MT8183: Fix fall-through warning for Clang
  power: supply: Fix fall-through warnings for Clang
  dmaengine: ti: k3-udma: Fix fall-through warning for Clang
  s390: Fix fall-through warnings for Clang
  dmaengine: ipu: Fix fall-through warning for Clang
  iommu/arm-smmu-v3: Fix fall-through warning for Clang
  mmc: jz4740: Fix fall-through warning for Clang
  PCI: Fix fall-through warning for Clang
  scsi: libsas: Fix fall-through warning for Clang
  video: fbdev: Fix fall-through warning for Clang
  math-emu: Fix fall-through warning
  cpufreq: Fix fall-through warning for Clang
  drm/msm: Fix fall-through warning in msm_gem_new_impl()
  ...
2021-07-15 13:57:31 -07:00
..
arm-smmu iommu/qcom: Revert "iommu/arm: Cleanup resources in case of probe error path" 2021-07-14 12:56:24 +02:00
arm-smmu-v3 iommu/arm-smmu-v3: Fix fall-through warning for Clang 2021-07-13 13:59:31 -05:00
Makefile