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authorGustavo A. R. Silva <gustavo@embeddedor.com>2019-07-28 18:17:18 -0500
committerGustavo A. R. Silva <gustavo@embeddedor.com>2019-08-09 19:45:31 -0500
commite7c0c9f6028dfa09ea9f20c5f1d387e5858afede (patch)
tree7d9a5aa94e30daec265bc055ccd2018a97c823b5
parent9b76ad3a9cc5ebb1dde650c8a9937f045e2707a2 (diff)
downloadlinux-stericsson-e7c0c9f6028dfa09ea9f20c5f1d387e5858afede.tar.gz
ARM: alignment: Mark expected switch fall-throughs
Mark switch cases where we are expecting to fall through. This patch fixes the following warnings: arch/arm/mm/alignment.c: In function 'thumb2arm': arch/arm/mm/alignment.c:688:6: warning: this statement may fall through [-Wimplicit-fallthrough=] if ((tinstr & (3 << 9)) == 0x0400) { ^ arch/arm/mm/alignment.c:700:2: note: here default: ^~~~~~~ arch/arm/mm/alignment.c: In function 'do_alignment_t32_to_handler': arch/arm/mm/alignment.c:753:15: warning: this statement may fall through [-Wimplicit-fallthrough=] poffset->un = (tinst2 & 0xff) << 2; ~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~ arch/arm/mm/alignment.c:754:2: note: here case 0xe940: ^~~~ Reported-by: Stephen Rothwell <sfr@canb.auug.org.au> Reviewed-by: Kees Cook <keescook@chromium.org> Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
-rw-r--r--arch/arm/mm/alignment.c4
1 files changed, 3 insertions, 1 deletions
diff --git a/arch/arm/mm/alignment.c b/arch/arm/mm/alignment.c
index 8cdb78642e93..04b36436cbc0 100644
--- a/arch/arm/mm/alignment.c
+++ b/arch/arm/mm/alignment.c
@@ -695,7 +695,7 @@ thumb2arm(u16 tinstr)
return subset[(L<<1) | ((tinstr & (1<<8)) >> 8)] |
(tinstr & 255); /* register_list */
}
- /* Else fall through for illegal instruction case */
+ /* Else, fall through - for illegal instruction case */
default:
return BAD_INSTR;
@@ -751,6 +751,8 @@ do_alignment_t32_to_handler(unsigned long *pinstr, struct pt_regs *regs,
case 0xe8e0:
case 0xe9e0:
poffset->un = (tinst2 & 0xff) << 2;
+ /* Fall through */
+
case 0xe940:
case 0xe9c0:
return do_alignment_ldrdstrd;