Re: [PATCH v1 07/13] fbdev: pxafb: use devm_kmemdup_array()

kernel test robot
2025-02-21T21:42:00Z

Hi Raag,

kernel test robot noticed the following build warnings:

[auto build test WARNING on b16e9f8547a328b19af59afc213ce323124d11e9]

url: https://github.com/intel-lab-lkp/linux/commits/Raag-Jadav/ASoC-Intel-avs-use-devm_kmemdup_array/20250222-010322
base: b16e9f8547a328b19af59afc213ce323124d11e9
patch link: https://lore.kernel.org/r/20250221165333.2780888-8-raag.jadav%40intel.com
patch subject: [PATCH v1 07/13] fbdev: pxafb: use devm_kmemdup_array()
config: arm-randconfig-004-20250222 (https://download.01.org/0day-ci/archive/20250222/202502220449.DvJuMgsL-lkp@intel.com/config)
compiler: arm-linux-gnueabi-gcc (GCC) 14.2.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250222/202502220449.DvJuMgsL-lkp@intel.com/reproduce)

If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202502220449.DvJuMgsL-lkp@intel.com/

All warnings (new ones prefixed by >>):

drivers/video/fbdev/pxafb.c: In function 'pxafb_probe':
>> drivers/video/fbdev/pxafb.c:2236:13: warning: unused variable 'i' [-Wunused-variable]
2236 | int i, irq, ret;
| ^

vim +/i +2236 drivers/video/fbdev/pxafb.c

420a488278e86a drivers/video/fbdev/pxafb.c Robert Jarzmik 2015-12-12 2231
48c68c4f1b5424 drivers/video/pxafb.c Greg Kroah-Hartman 2012-12-21 2232 static int pxafb_probe(struct platform_device *dev)
4f3e2664622d23 drivers/video/pxafb.c Eric Miao 2008-08-16 2233 {
4f3e2664622d23 drivers/video/pxafb.c Eric Miao 2008-08-16 2234 struct pxafb_info *fbi;
f3621a60b20d67 drivers/video/fbdev/pxafb.c Robert Jarzmik 2015-12-12 2235 struct pxafb_mach_info *inf, *pdata;
f3621a60b20d67 drivers/video/fbdev/pxafb.c Robert Jarzmik 2015-12-12 @2236 int i, irq, ret;
4f3e2664622d23 drivers/video/pxafb.c Eric Miao 2008-08-16 2237
4f3e2664622d23 drivers/video/pxafb.c Eric Miao 2008-08-16 2238 dev_dbg(&dev->dev, "pxafb_probe\n");
4f3e2664622d23 drivers/video/pxafb.c Eric Miao 2008-08-16 2239
4f3e2664622d23 drivers/video/pxafb.c Eric Miao 2008-08-16 2240 ret = -ENOMEM;
f3621a60b20d67 drivers/video/fbdev/pxafb.c Robert Jarzmik 2015-12-12 2241 pdata = dev_get_platdata(&dev->dev);
ed63c72a467651 drivers/video/fbdev/pxafb.c Raag Jadav 2025-02-21 2242 if (pdata) {
ed63c72a467651 drivers/video/fbdev/pxafb.c Raag Jadav 2025-02-21 2243 inf = devm_kmemdup(&dev->dev, pdata, sizeof(*pdata), GFP_KERNEL);
6f6abd360603af drivers/video/fbdev/pxafb.c Robert Jarzmik 2015-12-19 2244 if (!inf)
6f6abd360603af drivers/video/fbdev/pxafb.c Robert Jarzmik 2015-12-19 2245 goto failed;
420a488278e86a drivers/video/fbdev/pxafb.c Robert Jarzmik 2015-12-12 2246
ed63c72a467651 drivers/video/fbdev/pxafb.c Raag Jadav 2025-02-21 2247 inf->modes = devm_kmemdup_array(&dev->dev, pdata->modes, pdata->num_modes,
ed63c72a467651 drivers/video/fbdev/pxafb.c Raag Jadav 2025-02-21 2248 sizeof(*pdata->modes), GFP_KERNEL);
f3621a60b20d67 drivers/video/fbdev/pxafb.c Robert Jarzmik 2015-12-12 2249 if (!inf->modes)
f3621a60b20d67 drivers/video/fbdev/pxafb.c Robert Jarzmik 2015-12-12 2250 goto failed;
b23e868d35d572 drivers/video/fbdev/pxafb.c Wang Qing 2022-03-29 2251 } else {
b23e868d35d572 drivers/video/fbdev/pxafb.c Wang Qing 2022-03-29 2252 inf = of_pxafb_of_mach_info(&dev->dev);
420a488278e86a drivers/video/fbdev/pxafb.c Robert Jarzmik 2015-12-12 2253 if (IS_ERR_OR_NULL(inf))
f3621a60b20d67 drivers/video/fbdev/pxafb.c Robert Jarzmik 2015-12-12 2254 goto failed;
ed63c72a467651 drivers/video/fbdev/pxafb.c Raag Jadav 2025-02-21 2255 }
4f3e2664622d23 drivers/video/pxafb.c Eric Miao 2008-08-16 2256
f3621a60b20d67 drivers/video/fbdev/pxafb.c Robert Jarzmik 2015-12-12 2257 ret = pxafb_parse_options(&dev->dev, g_options, inf);
4f3e2664622d23 drivers/video/pxafb.c Eric Miao 2008-08-16 2258 if (ret < 0)
4f3e2664622d23 drivers/video/pxafb.c Eric Miao 2008-08-16 2259 goto failed;
4f3e2664622d23 drivers/video/pxafb.c Eric Miao 2008-08-16 2260
4f3e2664622d23 drivers/video/pxafb.c Eric Miao 2008-08-16 2261 pxafb_check_options(&dev->dev, inf);
4f3e2664622d23 drivers/video/pxafb.c Eric Miao 2008-08-16 2262
b0086efba5ad49 drivers/video/pxafb.c eric miao 2008-04-30 2263 dev_dbg(&dev->dev, "got a %dx%dx%d LCD\n",
b0086efba5ad49 drivers/video/pxafb.c eric miao 2008-04-30 2264 inf->modes->xres,
b0086efba5ad49 drivers/video/pxafb.c eric miao 2008-04-30 2265 inf->modes->yres,
b0086efba5ad49 drivers/video/pxafb.c eric miao 2008-04-30 2266 inf->modes->bpp);
b0086efba5ad49 drivers/video/pxafb.c eric miao 2008-04-30 2267 if (inf->modes->xres == 0 ||
b0086efba5ad49 drivers/video/pxafb.c eric miao 2008-04-30 2268 inf->modes->yres == 0 ||
b0086efba5ad49 drivers/video/pxafb.c eric miao 2008-04-30 2269 inf->modes->bpp == 0) {
3ae5eaec1d2d9c drivers/video/pxafb.c Russell King 2005-11-09 2270 dev_err(&dev->dev, "Invalid resolution or bit depth\n");
^1da177e4c3f41 drivers/video/pxafb.c Linus Torvalds 2005-04-16 2271 ret = -EINVAL;
^1da177e4c3f41 drivers/video/pxafb.c Linus Torvalds 2005-04-16 2272 goto failed;
^1da177e4c3f41 drivers/video/pxafb.c Linus Torvalds 2005-04-16 2273 }
a5718a14a1d91b drivers/video/pxafb.c Eric Miao 2008-11-11 2274
f3621a60b20d67 drivers/video/fbdev/pxafb.c Robert Jarzmik 2015-12-12 2275 fbi = pxafb_init_fbinfo(&dev->dev, inf);
a2f2058e3d295f drivers/video/fbdev/pxafb.c Daniel Mack 2018-07-24 2276 if (IS_ERR(fbi)) {
3ae5eaec1d2d9c drivers/video/pxafb.c Russell King 2005-11-09 2277 dev_err(&dev->dev, "Failed to initialize framebuffer device\n");
a2f2058e3d295f drivers/video/fbdev/pxafb.c Daniel Mack 2018-07-24 2278 ret = PTR_ERR(fbi);
^1da177e4c3f41 drivers/video/pxafb.c Linus Torvalds 2005-04-16 2279 goto failed;
^1da177e4c3f41 drivers/video/pxafb.c Linus Torvalds 2005-04-16 2280 }
^1da177e4c3f41 drivers/video/pxafb.c Linus Torvalds 2005-04-16 2281
52a7a1cec88acd drivers/video/pxafb.c Daniel Mack 2009-09-10 2282 if (cpu_is_pxa3xx() && inf->acceleration_enabled)
52a7a1cec88acd drivers/video/pxafb.c Daniel Mack 2009-09-10 2283 fbi->fb.fix.accel = FB_ACCEL_PXA3XX;
52a7a1cec88acd drivers/video/pxafb.c Daniel Mack 2009-09-10 2284
a5718a14a1d91b drivers/video/pxafb.c Eric Miao 2008-11-11 2285 fbi->backlight_power = inf->pxafb_backlight_power;
a5718a14a1d91b drivers/video/pxafb.c Eric Miao 2008-11-11 2286 fbi->lcd_power = inf->pxafb_lcd_power;
a5718a14a1d91b drivers/video/pxafb.c Eric Miao 2008-11-11 2287
31e1391af210fd drivers/video/fbdev/pxafb.c Daniel Mack 2018-07-24 2288 fbi->lcd_supply = devm_regulator_get_optional(&dev->dev, "lcd");
31e1391af210fd drivers/video/fbdev/pxafb.c Daniel Mack 2018-07-24 2289 if (IS_ERR(fbi->lcd_supply)) {
31e1391af210fd drivers/video/fbdev/pxafb.c Daniel Mack 2018-07-24 2290 if (PTR_ERR(fbi->lcd_supply) == -EPROBE_DEFER)
31e1391af210fd drivers/video/fbdev/pxafb.c Daniel Mack 2018-07-24 2291 return -EPROBE_DEFER;
31e1391af210fd drivers/video/fbdev/pxafb.c Daniel Mack 2018-07-24 2292
31e1391af210fd drivers/video/fbdev/pxafb.c Daniel Mack 2018-07-24 2293 fbi->lcd_supply = NULL;
31e1391af210fd drivers/video/fbdev/pxafb.c Daniel Mack 2018-07-24 2294 }
31e1391af210fd drivers/video/fbdev/pxafb.c Daniel Mack 2018-07-24 2295
7610bca71ea85d drivers/video/fbdev/pxafb.c Markus Elfring 2019-09-19 2296 fbi->mmio_base = devm_platform_ioremap_resource(dev, 0);
c8f96304ec8b49 drivers/video/fbdev/pxafb.c Daniel Mack 2018-07-24 2297 if (IS_ERR(fbi->mmio_base)) {
c8f96304ec8b49 drivers/video/fbdev/pxafb.c Daniel Mack 2018-07-24 2298 dev_err(&dev->dev, "failed to get I/O memory\n");
f35b1d6c21b414 drivers/video/fbdev/pxafb.c Tiezhu Yang 2020-05-25 2299 ret = PTR_ERR(fbi->mmio_base);
c8f96304ec8b49 drivers/video/fbdev/pxafb.c Daniel Mack 2018-07-24 2300 goto failed;
ce4fb7b892a6d6 drivers/video/pxafb.c eric miao 2008-04-30 2301 }
ce4fb7b892a6d6 drivers/video/pxafb.c eric miao 2008-04-30 2302
77e196752bdd76 drivers/video/pxafb.c Eric Miao 2008-12-16 2303 fbi->dma_buff_size = PAGE_ALIGN(sizeof(struct pxafb_dma_buff));
77e196752bdd76 drivers/video/pxafb.c Eric Miao 2008-12-16 2304 fbi->dma_buff = dma_alloc_coherent(fbi->dev, fbi->dma_buff_size,
77e196752bdd76 drivers/video/pxafb.c Eric Miao 2008-12-16 2305 &fbi->dma_buff_phys, GFP_KERNEL);
77e196752bdd76 drivers/video/pxafb.c Eric Miao 2008-12-16 2306 if (fbi->dma_buff == NULL) {
77e196752bdd76 drivers/video/pxafb.c Eric Miao 2008-12-16 2307 dev_err(&dev->dev, "failed to allocate memory for DMA\n");
77e196752bdd76 drivers/video/pxafb.c Eric Miao 2008-12-16 2308 ret = -ENOMEM;
c8f96304ec8b49 drivers/video/fbdev/pxafb.c Daniel Mack 2018-07-24 2309 goto failed;
77e196752bdd76 drivers/video/pxafb.c Eric Miao 2008-12-16 2310 }
77e196752bdd76 drivers/video/pxafb.c Eric Miao 2008-12-16 2311
77e196752bdd76 drivers/video/pxafb.c Eric Miao 2008-12-16 2312 ret = pxafb_init_video_memory(fbi);
^1da177e4c3f41 drivers/video/pxafb.c Linus Torvalds 2005-04-16 2313 if (ret) {
3ae5eaec1d2d9c drivers/video/pxafb.c Russell King 2005-11-09 2314 dev_err(&dev->dev, "Failed to allocate video RAM: %d\n", ret);
^1da177e4c3f41 drivers/video/pxafb.c Linus Torvalds 2005-04-16 2315 ret = -ENOMEM;
77e196752bdd76 drivers/video/pxafb.c Eric Miao 2008-12-16 2316 goto failed_free_dma;
^1da177e4c3f41 drivers/video/pxafb.c Linus Torvalds 2005-04-16 2317 }
^1da177e4c3f41 drivers/video/pxafb.c Linus Torvalds 2005-04-16 2318
ce4fb7b892a6d6 drivers/video/pxafb.c eric miao 2008-04-30 2319 irq = platform_get_irq(dev, 0);
ce4fb7b892a6d6 drivers/video/pxafb.c eric miao 2008-04-30 2320 if (irq < 0) {
ce4fb7b892a6d6 drivers/video/pxafb.c eric miao 2008-04-30 2321 ret = -ENODEV;
ce4fb7b892a6d6 drivers/video/pxafb.c eric miao 2008-04-30 2322 goto failed_free_mem;
ce4fb7b892a6d6 drivers/video/pxafb.c eric miao 2008-04-30 2323 }
ce4fb7b892a6d6 drivers/video/pxafb.c eric miao 2008-04-30 2324
c8f96304ec8b49 drivers/video/fbdev/pxafb.c Daniel Mack 2018-07-24 2325 ret = devm_request_irq(&dev->dev, irq, pxafb_handle_irq, 0, "LCD", fbi);
^1da177e4c3f41 drivers/video/pxafb.c Linus Torvalds 2005-04-16 2326 if (ret) {
3ae5eaec1d2d9c drivers/video/pxafb.c Russell King 2005-11-09 2327 dev_err(&dev->dev, "request_irq failed: %d\n", ret);
^1da177e4c3f41 drivers/video/pxafb.c Linus Torvalds 2005-04-16 2328 ret = -EBUSY;
ce4fb7b892a6d6 drivers/video/pxafb.c eric miao 2008-04-30 2329 goto failed_free_mem;
^1da177e4c3f41 drivers/video/pxafb.c Linus Torvalds 2005-04-16 2330 }
^1da177e4c3f41 drivers/video/pxafb.c Linus Torvalds 2005-04-16 2331
3c42a449107bf7 drivers/video/pxafb.c Eric Miao 2008-04-30 2332 ret = pxafb_smart_init(fbi);
3c42a449107bf7 drivers/video/pxafb.c Eric Miao 2008-04-30 2333 if (ret) {
3c42a449107bf7 drivers/video/pxafb.c Eric Miao 2008-04-30 2334 dev_err(&dev->dev, "failed to initialize smartpanel\n");
c8f96304ec8b49 drivers/video/fbdev/pxafb.c Daniel Mack 2018-07-24 2335 goto failed_free_mem;
3c42a449107bf7 drivers/video/pxafb.c Eric Miao 2008-04-30 2336 }
07df1c4fea1474 drivers/video/pxafb.c Eric Miao 2008-12-04 2337
^1da177e4c3f41 drivers/video/pxafb.c Linus Torvalds 2005-04-16 2338 /*
^1da177e4c3f41 drivers/video/pxafb.c Linus Torvalds 2005-04-16 2339 * This makes sure that our colour bitfield
^1da177e4c3f41 drivers/video/pxafb.c Linus Torvalds 2005-04-16 2340 * descriptors are correctly initialised.
^1da177e4c3f41 drivers/video/pxafb.c Linus Torvalds 2005-04-16 2341 */
ee98476bbc565f drivers/video/pxafb.c Jaya Kumar 2008-06-22 2342 ret = pxafb_check_var(&fbi->fb.var, &fbi->fb);
ee98476bbc565f drivers/video/pxafb.c Jaya Kumar 2008-06-22 2343 if (ret) {
ee98476bbc565f drivers/video/pxafb.c Jaya Kumar 2008-06-22 2344 dev_err(&dev->dev, "failed to get suitable mode\n");
c8f96304ec8b49 drivers/video/fbdev/pxafb.c Daniel Mack 2018-07-24 2345 goto failed_free_mem;
ee98476bbc565f drivers/video/pxafb.c Jaya Kumar 2008-06-22 2346 }
ee98476bbc565f drivers/video/pxafb.c Jaya Kumar 2008-06-22 2347
ee98476bbc565f drivers/video/pxafb.c Jaya Kumar 2008-06-22 2348 ret = pxafb_set_par(&fbi->fb);
ee98476bbc565f drivers/video/pxafb.c Jaya Kumar 2008-06-22 2349 if (ret) {
ee98476bbc565f drivers/video/pxafb.c Jaya Kumar 2008-06-22 2350 dev_err(&dev->dev, "Failed to set parameters\n");
c8f96304ec8b49 drivers/video/fbdev/pxafb.c Daniel Mack 2018-07-24 2351 goto failed_free_mem;
ee98476bbc565f drivers/video/pxafb.c Jaya Kumar 2008-06-22 2352 }
^1da177e4c3f41 drivers/video/pxafb.c Linus Torvalds 2005-04-16 2353
3ae5eaec1d2d9c drivers/video/pxafb.c Russell King 2005-11-09 2354 platform_set_drvdata(dev, fbi);
^1da177e4c3f41 drivers/video/pxafb.c Linus Torvalds 2005-04-16 2355
^1da177e4c3f41 drivers/video/pxafb.c Linus Torvalds 2005-04-16 2356 ret = register_framebuffer(&fbi->fb);
^1da177e4c3f41 drivers/video/pxafb.c Linus Torvalds 2005-04-16 2357 if (ret < 0) {
b0086efba5ad49 drivers/video/pxafb.c eric miao 2008-04-30 2358 dev_err(&dev->dev,
b0086efba5ad49 drivers/video/pxafb.c eric miao 2008-04-30 2359 "Failed to register framebuffer device: %d\n", ret);
ee98476bbc565f drivers/video/pxafb.c Jaya Kumar 2008-06-22 2360 goto failed_free_cmap;
^1da177e4c3f41 drivers/video/pxafb.c Linus Torvalds 2005-04-16 2361 }
^1da177e4c3f41 drivers/video/pxafb.c Linus Torvalds 2005-04-16 2362
198fc108ee4c2c drivers/video/pxafb.c Eric Miao 2008-12-23 2363 pxafb_overlay_init(fbi);
198fc108ee4c2c drivers/video/pxafb.c Eric Miao 2008-12-23 2364

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