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HSI: ssi_protocol: Mark expected switch fall-throughs

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Mark switch cases where we are expecting to fall through.

This patch fixes the following warning (Building: arm):

drivers/hsi/clients/ssi_protocol.c: In function ‘ssip_set_rxstate’:
drivers/hsi/clients/ssi_protocol.c:291:6: warning: this statement may fall through [-Wimplicit-fallthrough=]
   if (atomic_read(&ssi->tx_usecnt))
      ^
drivers/hsi/clients/ssi_protocol.c:294:2: note: here
  case RECEIVING:
  ^~~~

drivers/hsi/clients/ssi_protocol.c: In function ‘ssip_keep_alive’:
drivers/hsi/clients/ssi_protocol.c:466:7: warning: this statement may fall through [-Wimplicit-fallthrough=]
    if (atomic_read(&ssi->tx_usecnt) == 0)
       ^
drivers/hsi/clients/ssi_protocol.c:472:3: note: here
   case SEND_IDLE:
   ^~~~

Notice that, in this particular case, the code comment is
modified in accordance with what GCC is expecting to find.

Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
This commit is contained in:
Gustavo A. R. Silva 2019-07-29 17:45:19 -05:00 • committed by Sebastian Reichel
parent 5f9e832c13
commit e008227eb3
1 changed files with 4 additions and 3 deletions
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7
drivers/hsi/clients/ssi_protocol.c
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@ -290,7 +290,7 @@ static void ssip_set_rxstate(struct ssi_protocol *ssi, unsigned int state)
/* CMT speech workaround */
if (atomic_read(&ssi->tx_usecnt))
break;
/* Otherwise fall through */
/* Else, fall through */
case RECEIVING:
mod_timer(&ssi->keep_alive, jiffies +
msecs_to_jiffies(SSIP_KATOUT));
@ -465,9 +465,10 @@ static void ssip_keep_alive(struct timer_list *t)
case SEND_READY:
if (atomic_read(&ssi->tx_usecnt) == 0)
break;
/* Fall through */
/*
* Fall through. Workaround for cmt-speech
* in that case we relay on audio timers.
* Workaround for cmt-speech in that case
* we relay on audio timers.
*/
case SEND_IDLE:
spin_unlock(&ssi->lock);