[kbingham-rcar:kbingham/vsp/v3u-5.16 17/33] drivers/gpu/drm/rcar-du/rcar_mipi_dsi.c:641:6: warning: Unused variable: ret [unusedVariable]

[kbingham-rcar:kbingham/vsp/v3u-5.16 17/33] drivers/gpu/drm/rcar-du/rcar_mipi_dsi.c:641:6: warning: Unused variable: ret [unusedVariable]

[kernel test robot]

[-- Attachment #1: Type: text/plain, Size: 3812 bytes --]

CC: kbuild-all(a)lists.01.org
CC: linux-kernel(a)vger.kernel.org
TO: Kieran Bingham <kieran.bingham+renesas@ideasonboard.com>

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/kbingham/rcar.git kbingham/vsp/v3u-5.16
head:   3f9acc04945582172a99910f5a264347f6ddb0a9
commit: adffb421fe4941afa0e9af6eaa5564e2166a4ba5 [17/33] drm: rcar-du: mipi-dsi: Use devm_drm_of_get_bridge helper
:::::: branch date: 5 days ago
:::::: commit date: 5 days ago
compiler: arc-elf-gcc (GCC) 11.2.0

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@intel.com>


cppcheck possible warnings: (new ones prefixed by >>, may not real problems)

>> drivers/gpu/drm/rcar-du/rcar_mipi_dsi.c:641:6: warning: Unused variable: ret [unusedVariable]
    int ret;
        ^

vim +641 drivers/gpu/drm/rcar-du/rcar_mipi_dsi.c

e7d888bbc365be LUU HOAI       2020-02-25  626  
e7d888bbc365be LUU HOAI       2020-02-25  627  /* -----------------------------------------------------------------------------
e7d888bbc365be LUU HOAI       2020-02-25  628   * Clock Setting
e7d888bbc365be LUU HOAI       2020-02-25  629   */
e7d888bbc365be LUU HOAI       2020-02-25  630  
e7d888bbc365be LUU HOAI       2020-02-25  631  
e7d888bbc365be LUU HOAI       2020-02-25  632  /* -----------------------------------------------------------------------------
e7d888bbc365be LUU HOAI       2020-02-25  633   * Host setting
e7d888bbc365be LUU HOAI       2020-02-25  634   */
e7d888bbc365be LUU HOAI       2020-02-25  635  
e7d888bbc365be LUU HOAI       2020-02-25  636  static int rcar_mipi_dsi_host_attach(struct mipi_dsi_host *host,
e7d888bbc365be LUU HOAI       2020-02-25  637  					struct mipi_dsi_device *device)
e7d888bbc365be LUU HOAI       2020-02-25  638  {
e7d888bbc365be LUU HOAI       2020-02-25  639  	struct rcar_mipi_dsi *dsi = host_to_rcar_mipi_dsi(host);
adffb421fe4941 Kieran Bingham 2021-11-30  640  	struct device *dev = dsi->dev;
e1579d24bd6f85 Kieran Bingham 2021-11-25 @641  	int ret;
e7d888bbc365be LUU HOAI       2020-02-25  642  
e7d888bbc365be LUU HOAI       2020-02-25  643  	if (device->lanes > dsi->num_data_lanes)
e7d888bbc365be LUU HOAI       2020-02-25  644  		return -EINVAL;
e7d888bbc365be LUU HOAI       2020-02-25  645  
e7d888bbc365be LUU HOAI       2020-02-25  646  	dsi->lanes = device->lanes;
e7d888bbc365be LUU HOAI       2020-02-25  647  	dsi->format = device->format;
e7d888bbc365be LUU HOAI       2020-02-25  648  
adffb421fe4941 Kieran Bingham 2021-11-30  649  	dsi->next_bridge = devm_drm_of_get_bridge(dev, dev->of_node, 1, 0);
adffb421fe4941 Kieran Bingham 2021-11-30  650  	if (IS_ERR(dsi->next_bridge))
e1579d24bd6f85 Kieran Bingham 2021-11-25  651  		return PTR_ERR(dsi->next_bridge);
e1579d24bd6f85 Kieran Bingham 2021-11-25  652  
e1579d24bd6f85 Kieran Bingham 2021-11-25  653  	/* Initialize the DRM bridge. */
e1579d24bd6f85 Kieran Bingham 2021-11-25  654  	dsi->bridge.funcs = &rcar_mipi_dsi_bridge_ops;
e1579d24bd6f85 Kieran Bingham 2021-11-25  655  	dsi->bridge.of_node = dsi->dev->of_node;
e1579d24bd6f85 Kieran Bingham 2021-11-25  656  	drm_bridge_add(&dsi->bridge);
e1579d24bd6f85 Kieran Bingham 2021-11-25  657  
e7d888bbc365be LUU HOAI       2020-02-25  658  	return 0;
e7d888bbc365be LUU HOAI       2020-02-25  659  }
e7d888bbc365be LUU HOAI       2020-02-25  660  

:::::: The code at line 641 was first introduced by commit
:::::: e1579d24bd6f85abc964af4637e471dd8f373e87 drm: rcar-du: mipi-dsi: Support bridge probe ordering

:::::: TO: Kieran Bingham <kieran.bingham+renesas@ideasonboard.com>
:::::: CC: Kieran Bingham <kieran.bingham+renesas@ideasonboard.com>

---
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