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@xxxxxxxxxxxxxx>
---
Notice that this code has been out there since 2011, and who
introduced the question mark was the original developer.
It'd be good if someone can confirm that the fall-through
has been intentional all this time.
Thanks
--
Gustavo
drivers/usb/isp1760/isp1760-hcd.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/usb/isp1760/isp1760-hcd.c b/drivers/usb/isp1760/isp1760-hcd.c
index 8142c6b4c4cf..320fc4739835 100644
--- a/drivers/usb/isp1760/isp1760-hcd.c
+++ b/drivers/usb/isp1760/isp1760-hcd.c
@@ -788,11 +788,11 @@ static void collect_qtds(struct usb_hcd *hcd, struct isp1760_qh *qh,
mem_reads8(hcd->regs, qtd->payload_addr,
qtd->data_buffer,
qtd->actual_length);
- /* Fall through (?) */
+ /* Fall through */
case OUT_PID:
qtd->urb->actual_length +=
qtd->actual_length;
- /* Fall through ... */
+ /* Fall through */
case SETUP_PID:
break;
}
--
2.21.0
