usb: dwc3: dwc3-omap: Do not read DMA status

Commit af566a0be6e49 ("usb: dwc3: omap: get rid of dma_status") rendered
reading DMA status from the H/W even more redundant.  The variable hasn't
been read/used since 2016.  Remove the set but unused variable and the call
which populates it.

Fixes the following W=1 warning:

 drivers/usb/dwc3/dwc3-omap.c: In function ‘dwc3_omap_probe’:
 drivers/usb/dwc3/dwc3-omap.c:460:8: warning: variable ‘reg’ set but not used [-Wunused-but-set-variable]
 460 | u32 reg;
 | ^~~

Cc: Felipe Balbi <balbi@kernel.org>
Cc: Andrzej Siewior <bigeasy@linutronix.de>
Cc: linux-omap@vger.kernel.org
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Link: https://lore.kernel.org/r/20200702144625.2533530-9-lee.jones@linaro.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/usb/dwc3/dwc3-omap.c b/drivers/usb/dwc3/dwc3-omap.c
index 8c3de2d..11288a3 100644 (file)
--- a/drivers/usb/dwc3/dwc3-omap.c
+++ b/drivers/usb/dwc3/dwc3-omap.c
@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: GPL-2.0
-/**
+/*
  * dwc3-omap.c - OMAP Specific Glue layer
  *
  * Copyright (C) 2010-2011 Texas Instruments Incorporated - http://www.ti.com
@@ -457,8 +457,6 @@ static int dwc3_omap_probe(struct platform_device *pdev)
        int                     ret;
        int                     irq;
 
-       u32                     reg;
-
        void __iomem            *base;
 
        if (!node) {
@@ -503,9 +501,6 @@ static int dwc3_omap_probe(struct platform_device *pdev)
        dwc3_omap_map_offset(omap);
        dwc3_omap_set_utmi_mode(omap);
 
-       /* check the DMA Status */
-       reg = dwc3_omap_readl(omap->base, USBOTGSS_SYSCONFIG);
-
        ret = dwc3_omap_extcon_register(omap);
        if (ret < 0)
                goto err1;