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usb: isp1760-hcd: Fix fall-through annotations 

In preparation to enabling -Wimplicit-fallthrough, mark switch
cases where we are expecting to fall through.

This patch fixes the following warning:

drivers/usb/isp1760/isp1760-hcd.c: In function ‘collect_qtds’:
drivers/usb/isp1760/isp1760-hcd.c:788:6: warning: this statement may fall through [-Wimplicit-fallthrough=]
      mem_reads8(hcd->regs, qtd->payload_addr,
      ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
        qtd->data_buffer,
        ~~~~~~~~~~~~~~~~~
        qtd->actual_length);
        ~~~~~~~~~~~~~~~~~~~
drivers/usb/isp1760/isp1760-hcd.c:792:5: note: here
     case OUT_PID:
     ^~~~

Warning level 3 was used: -Wimplicit-fallthrough=3

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

This patch is part of the ongoing efforts to enable
-Wimplicit-fallthrough.

Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Gustavo A. R. Silva 2019-05-01 10:39:34 -05:00 committed by Greg Kroah-Hartman
parent e823d948b7
commit ce64cea47c
1 changed files with 2 additions and 2 deletions
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4
drivers/usb/isp1760/isp1760-hcd.c
View File

@ -788,11 +788,11 @@ static void collect_qtds(struct usb_hcd *hcd, struct isp1760_qh *qh,
mem_reads8(hcd->regs, qtd->payload_addr, mem_reads8(hcd->regs, qtd->payload_addr,
qtd->data_buffer, qtd->data_buffer,
qtd->actual_length); qtd->actual_length);
/* Fall through (?) */ /* Fall through */
case OUT_PID: case OUT_PID:
qtd->urb->actual_length += qtd->urb->actual_length +=
qtd->actual_length; qtd->actual_length;
/* Fall through ... */ /* Fall through */
case SETUP_PID: case SETUP_PID:
break; break;
} }