Gustavo has been working to fix up all of the switch statements that "fall through" such that we can eventually turn on -Wimplicit-fallthrough. As part of that, the io_edgeport.c driver is a bit "messy" with the parsing logic of a data packet. Clean that logic up a bit by unindenting one level of the logic, and properly label /* Fall through */ to make gcc happy.
Reported-by: Gustavo A. R. Silva <[email protected]> Signed-off-by: Greg Kroah-Hartman <[email protected]> diff --git a/drivers/usb/serial/io_edgeport.c b/drivers/usb/serial/io_edgeport.c index 4ca31c0e4174..48a439298a68 100644 --- a/drivers/usb/serial/io_edgeport.c +++ b/drivers/usb/serial/io_edgeport.c @@ -1751,7 +1751,7 @@ static void process_rcvd_data(struct edgeport_serial *edge_serial, edge_serial->rxState = EXPECT_HDR2; break; } - /* otherwise, drop on through */ + /* Fall through */ case EXPECT_HDR2: edge_serial->rxHeader2 = *buffer; ++buffer; @@ -1790,29 +1790,20 @@ static void process_rcvd_data(struct edgeport_serial *edge_serial, edge_serial->rxHeader2, 0); edge_serial->rxState = EXPECT_HDR1; break; - } else { - edge_serial->rxPort = - IOSP_GET_HDR_PORT(edge_serial->rxHeader1); - edge_serial->rxBytesRemaining = - IOSP_GET_HDR_DATA_LEN( - edge_serial->rxHeader1, - edge_serial->rxHeader2); - dev_dbg(dev, "%s - Data for Port %u Len %u\n", - __func__, - edge_serial->rxPort, - edge_serial->rxBytesRemaining); - - /* ASSERT(DevExt->RxPort < DevExt->NumPorts); - * ASSERT(DevExt->RxBytesRemaining < - * IOSP_MAX_DATA_LENGTH); - */ - - if (bufferLength == 0) { - edge_serial->rxState = EXPECT_DATA; - break; - } - /* Else, drop through */ } + + edge_serial->rxPort = IOSP_GET_HDR_PORT(edge_serial->rxHeader1); + edge_serial->rxBytesRemaining = IOSP_GET_HDR_DATA_LEN(edge_serial->rxHeader1, + edge_serial->rxHeader2); + dev_dbg(dev, "%s - Data for Port %u Len %u\n", __func__, + edge_serial->rxPort, + edge_serial->rxBytesRemaining); + + if (bufferLength == 0) { + edge_serial->rxState = EXPECT_DATA; + break; + } + /* Fall through */ case EXPECT_DATA: /* Expect data */ if (bufferLength < edge_serial->rxBytesRemaining) { rxLen = bufferLength;
