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usb: host: fhci-hcd: annotate PIPE_CONTROL switch case with fallthrough 

After this was made buildable for something other than PPC32, kbuild
starts warning

drivers/usb/host/fhci-hcd.c:398:8: warning: this statement may fall
through [-Wimplicit-fallthrough=]

I don't know this code, but from the construction (initializing size
with 0 and explicitly using "size +=" in the PIPE_BULK case) I assume
that fallthrough is indeed intended.

Reported-by: kbuild test robot <lkp@intel.com>
Signed-off-by: Rasmus Villemoes <linux@rasmusvillemoes.dk>
Acked-by: Li Yang <leoyang.li@nxp.com>
Link: https://lore.kernel.org/r/20200213085401.27862-1-linux@rasmusvillemoes.dk
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Rasmus Villemoes 2020-02-13 09:54:00 +01:00 committed by Greg Kroah-Hartman
parent 57a5e5f936
commit 28926994e5
1 changed files with 1 additions and 0 deletions
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drivers/usb/host/fhci-hcd.c
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@ -396,6 +396,7 @@ static int fhci_urb_enqueue(struct usb_hcd *hcd, struct urb *urb,
case PIPE_CONTROL:
/* 1 td fro setup,1 for ack */
size = 2;
fallthrough;
case PIPE_BULK:
/* one td for every 4096 bytes(can be up to 8k) */
size += urb->transfer_buffer_length / 4096;