From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mgamail.intel.com (mgamail.intel.com [192.198.163.14]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id BA2F649CF36 for ; Tue, 6 Oct 2026 16:13:13 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=192.198.163.14 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1791303195; cv=none; b=bxzEEu7OvC5KvudewRus+5UkNBjlg3rfXMxW+ZLnwzONP/+EGEKbkO0Mp2rU9z4Cr05CJLSHRUeeC7Vo9v/He5vDTurQAL7Zo4tvyHtw9LtfOsuRbaA7XJt+y2PBmzv5eQf3559E2UB5eCh6On2DAvEVaHqN+QBLbLyOtXEyEKM= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1791303195; c=relaxed/simple; bh=jx6nLeQVSmPOPzJY1Yy2Eu9eaUPIEu2vKLVp+Aq7yHE=; h=Date:From:To:Cc:Subject:Message-ID; b=Fg3ncF6B8Pl9wf7g+e9iJVQ45tGgPs3Im60cBG0IYgZCI9rbBNqwpTCNzP9MZcEemXP9EPkXb16Lsl7+/F/ljR1HaByvQf+b6RgNJbZ4mKzcN1gSRL1RnzmUiVvKjNEJvFmJqAg9OEU6qVNKNuJ6Gcu9EtvHVxltyCZsiB2bAV0= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=intel.com; spf=pass smtp.mailfrom=intel.com; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b=O4s9lqzM; arc=none smtp.client-ip=192.198.163.14 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=intel.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=intel.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b="O4s9lqzM" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1791303193; x=1822839193; h=date:from:to:cc:subject:message-id; bh=jx6nLeQVSmPOPzJY1Yy2Eu9eaUPIEu2vKLVp+Aq7yHE=; b=O4s9lqzM8HLkgZY7QLqgkNx11xskj7apm2ZyAnpoiMXDeeVKAMS+FX1f obHRdDKRBFr3x1EHZNro5JbO56Ux48Gh6MezECJSXW2TfY6S0u+2437a1 4qKso0C9H2q33gXIbafkyjn+9y8qbpv9JmSgNHrh7wINOyqSwV9G1B5HA ZlSuU2D162UGRgJJVS289mCrWqfBc7WCR/UWAVNpFXDi7ROwFJCda1mD/ gocYN3joRYhUqURHbSAbtYEG14SoJ4tk+ZhT0VD4eAG/crkFrgKZUlIOP gMNDl0wWQTz1BYr2EwDKr1iHi7XFtgcMm092GBWd95kJEZ+LhKWIiy1nS A==; X-CSE-ConnectionGUID: qpk0Sp9YSr2mKEbwIRTX/Q== X-CSE-MsgGUID: P6qc5/OkQOOJOSG61sCmsQ== X-IronPort-AV: E=McAfee;i="6800,10657,11927"; a="39540" X-IronPort-AV: E=Sophos;i="6.27,143,1787036400"; d="scan'208";a="39540" Received: from fmviesa002.fm.intel.com ([10.60.135.142]) by fmvoesa108.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 06 Oct 2026 09:13:13 -0700 X-CSE-ConnectionGUID: WioHkA82QqWjb1FDb2YRhg== X-CSE-MsgGUID: 4uhTXp3gSkGPyqzZBxyAOw== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.27,143,1787036400"; d="scan'208";a="303466731" Received: from igk-lkp-server01.igk.intel.com (HELO d0de6c2a75a7) ([10.211.93.152]) by fmviesa002.fm.intel.com with ESMTP; 06 Oct 2026 09:13:11 -0700 Received: from kbuild by d0de6c2a75a7 with local (Exim 4.98.2) (envelope-from ) id 1xE7mv-000000001U7-1sGD; Tue, 06 Oct 2026 16:13:09 +0000 Date: Tue, 06 Oct 2026 18:12:43 +0200 From: kernel test robot To: Rosen Penev Cc: oe-kbuild-all@lists.linux.dev, linux-kernel@vger.kernel.org Subject: drivers/uio/uio_fsl_elbc_gpcm.c:323:19: sparse: sparse: unsigned value that used to be signed checked against zero? Message-ID: <202610061847.h2hn65y5-lkp@intel.com> User-Agent: s-nail v14.9.25 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Hi Rosen, FYI, the error/warning was bisected to this commit, please ignore it if it's irrelevant. tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: 69f80fef3153299d9c72c53d1d71eef6354b6926 commit: c8295feb756f5e3ccf02c14a90a2ee0aed95e409 uio: fsl_elbc_gpcm: use platform helpers for resource and IRQ date: 10 weeks ago config: powerpc64-randconfig-r2304-20261006 (https://download.01.org/0day-ci/archive/20261006/202610061847.h2hn65y5-lkp@intel.com/config) compiler: powerpc64-linux-gcc (GCC) 16.1.0 sparse: v0.6.5-rc1 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20261006/202610061847.h2hn65y5-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 | Fixes: c8295feb756f ("uio: fsl_elbc_gpcm: use platform helpers for resource and IRQ") | Reported-by: kernel test robot | Closes: https://lore.kernel.org/oe-kbuild-all/202610061847.h2hn65y5-lkp@intel.com/ sparse warnings: (new ones prefixed by >>) drivers/uio/uio_fsl_elbc_gpcm.c:85:53: sparse: sparse: incorrect type in initializer (different address spaces) @@ expected struct fsl_lbc_bank *bank @@ got struct fsl_lbc_bank [noderef] __iomem * @@ drivers/uio/uio_fsl_elbc_gpcm.c:85:53: sparse: expected struct fsl_lbc_bank *bank drivers/uio/uio_fsl_elbc_gpcm.c:85:53: sparse: got struct fsl_lbc_bank [noderef] __iomem * drivers/uio/uio_fsl_elbc_gpcm.c:89:43: sparse: sparse: incorrect type in argument 1 (different base types) @@ expected unsigned int const volatile [noderef] [usertype] __iomem *addr @@ got restricted __be32 * @@ drivers/uio/uio_fsl_elbc_gpcm.c:89:43: sparse: expected unsigned int const volatile [noderef] [usertype] __iomem *addr drivers/uio/uio_fsl_elbc_gpcm.c:89:43: sparse: got restricted __be32 * drivers/uio/uio_fsl_elbc_gpcm.c:93:43: sparse: sparse: incorrect type in argument 1 (different base types) @@ expected unsigned int const volatile [noderef] [usertype] __iomem *addr @@ got restricted __be32 * @@ drivers/uio/uio_fsl_elbc_gpcm.c:93:43: sparse: expected unsigned int const volatile [noderef] [usertype] __iomem *addr drivers/uio/uio_fsl_elbc_gpcm.c:93:43: sparse: got restricted __be32 * drivers/uio/uio_fsl_elbc_gpcm.c:104:53: sparse: sparse: incorrect type in initializer (different address spaces) @@ expected struct fsl_lbc_bank *bank @@ got struct fsl_lbc_bank [noderef] __iomem * @@ drivers/uio/uio_fsl_elbc_gpcm.c:104:53: sparse: expected struct fsl_lbc_bank *bank drivers/uio/uio_fsl_elbc_gpcm.c:104:53: sparse: got struct fsl_lbc_bank [noderef] __iomem * drivers/uio/uio_fsl_elbc_gpcm.c:116:31: sparse: sparse: incorrect type in argument 1 (different base types) @@ expected unsigned int const volatile [noderef] [usertype] __iomem *addr @@ got restricted __be32 * @@ drivers/uio/uio_fsl_elbc_gpcm.c:116:31: sparse: expected unsigned int const volatile [noderef] [usertype] __iomem *addr drivers/uio/uio_fsl_elbc_gpcm.c:116:31: sparse: got restricted __be32 * drivers/uio/uio_fsl_elbc_gpcm.c:117:31: sparse: sparse: incorrect type in argument 1 (different base types) @@ expected unsigned int const volatile [noderef] [usertype] __iomem *addr @@ got restricted __be32 * @@ drivers/uio/uio_fsl_elbc_gpcm.c:117:31: sparse: expected unsigned int const volatile [noderef] [usertype] __iomem *addr drivers/uio/uio_fsl_elbc_gpcm.c:117:31: sparse: got restricted __be32 * drivers/uio/uio_fsl_elbc_gpcm.c:131:27: sparse: sparse: incorrect type in argument 1 (different base types) @@ expected unsigned int volatile [noderef] [usertype] __iomem *addr @@ got restricted __be32 * @@ drivers/uio/uio_fsl_elbc_gpcm.c:131:27: sparse: expected unsigned int volatile [noderef] [usertype] __iomem *addr drivers/uio/uio_fsl_elbc_gpcm.c:131:27: sparse: got restricted __be32 * drivers/uio/uio_fsl_elbc_gpcm.c:139:27: sparse: sparse: incorrect type in argument 1 (different base types) @@ expected unsigned int volatile [noderef] [usertype] __iomem *addr @@ got restricted __be32 * @@ drivers/uio/uio_fsl_elbc_gpcm.c:139:27: sparse: expected unsigned int volatile [noderef] [usertype] __iomem *addr drivers/uio/uio_fsl_elbc_gpcm.c:139:27: sparse: got restricted __be32 * drivers/uio/uio_fsl_elbc_gpcm.c:345:46: sparse: sparse: incorrect type in argument 1 (different base types) @@ expected unsigned int const volatile [noderef] [usertype] __iomem *addr @@ got restricted __be32 [noderef] __iomem * @@ drivers/uio/uio_fsl_elbc_gpcm.c:345:46: sparse: expected unsigned int const volatile [noderef] [usertype] __iomem *addr drivers/uio/uio_fsl_elbc_gpcm.c:345:46: sparse: got restricted __be32 [noderef] __iomem * drivers/uio/uio_fsl_elbc_gpcm.c:346:46: sparse: sparse: incorrect type in argument 1 (different base types) @@ expected unsigned int const volatile [noderef] [usertype] __iomem *addr @@ got restricted __be32 [noderef] __iomem * @@ drivers/uio/uio_fsl_elbc_gpcm.c:346:46: sparse: expected unsigned int const volatile [noderef] [usertype] __iomem *addr drivers/uio/uio_fsl_elbc_gpcm.c:346:46: sparse: got restricted __be32 [noderef] __iomem * drivers/uio/uio_fsl_elbc_gpcm.c:375:34: sparse: sparse: incorrect type in argument 1 (different base types) @@ expected unsigned int volatile [noderef] [usertype] __iomem *addr @@ got restricted __be32 [noderef] __iomem * @@ drivers/uio/uio_fsl_elbc_gpcm.c:375:34: sparse: expected unsigned int volatile [noderef] [usertype] __iomem *addr drivers/uio/uio_fsl_elbc_gpcm.c:375:34: sparse: got restricted __be32 [noderef] __iomem * drivers/uio/uio_fsl_elbc_gpcm.c:376:34: sparse: sparse: incorrect type in argument 1 (different base types) @@ expected unsigned int volatile [noderef] [usertype] __iomem *addr @@ got restricted __be32 [noderef] __iomem * @@ drivers/uio/uio_fsl_elbc_gpcm.c:376:34: sparse: expected unsigned int volatile [noderef] [usertype] __iomem *addr drivers/uio/uio_fsl_elbc_gpcm.c:376:34: sparse: got restricted __be32 [noderef] __iomem * >> drivers/uio/uio_fsl_elbc_gpcm.c:323:19: sparse: sparse: unsigned value that used to be signed checked against zero? drivers/uio/uio_fsl_elbc_gpcm.c:322:31: sparse: signed value source vim +323 drivers/uio/uio_fsl_elbc_gpcm.c 297 298 static int uio_fsl_elbc_gpcm_probe(struct platform_device *pdev) 299 { 300 struct device_node *node = pdev->dev.of_node; 301 struct fsl_elbc_gpcm *priv; 302 struct uio_info *info; 303 char *uio_name = NULL; 304 struct resource *res; 305 void __iomem *base; 306 unsigned int irq; 307 u32 reg_br_cur; 308 u32 reg_or_cur; 309 u32 reg_br_new; 310 u32 reg_or_new; 311 int ret; 312 313 if (!fsl_lbc_ctrl_dev || !fsl_lbc_ctrl_dev->regs) 314 return -ENODEV; 315 316 /* map the memory resource */ 317 base = devm_platform_get_and_ioremap_resource(pdev, 0, &res); 318 if (IS_ERR(base)) 319 return PTR_ERR(base); 320 321 /* get optional irq value */ 322 irq = platform_get_irq(pdev, 0); > 323 if (irq < 0) 324 return irq; 325 326 /* allocate private data */ 327 priv = devm_kzalloc(&pdev->dev, sizeof(*priv), GFP_KERNEL); 328 if (!priv) 329 return -ENOMEM; 330 priv->dev = &pdev->dev; 331 priv->lbc = fsl_lbc_ctrl_dev->regs; 332 333 /* get device tree data */ 334 ret = get_of_data(priv, node, res, ®_br_new, ®_or_new, 335 &uio_name); 336 if (ret) 337 return ret; 338 339 /* allocate UIO structure */ 340 info = devm_kzalloc(&pdev->dev, sizeof(*info), GFP_KERNEL); 341 if (!info) 342 return -ENOMEM; 343 344 /* get current BR/OR values */ 345 reg_br_cur = in_be32(&priv->lbc->bank[priv->bank].br); 346 reg_or_cur = in_be32(&priv->lbc->bank[priv->bank].or); 347 348 /* if bank already configured, make sure it matches */ 349 if ((reg_br_cur & BR_V)) { 350 if ((reg_br_cur & BR_MSEL) != BR_MS_GPCM || 351 (reg_br_cur & reg_or_cur & BR_BA) 352 != fsl_lbc_addr(res->start)) { 353 dev_err(priv->dev, 354 "bank in use by another peripheral\n"); 355 return -ENODEV; 356 } 357 358 /* warn if behavior settings changing */ 359 if ((reg_br_cur & ~(BR_BA | BR_V)) != 360 (reg_br_new & ~(BR_BA | BR_V))) { 361 dev_warn(priv->dev, 362 "modifying BR settings: 0x%08x -> 0x%08x", 363 reg_br_cur, reg_br_new); 364 } 365 if ((reg_or_cur & ~OR_GPCM_AM) != (reg_or_new & ~OR_GPCM_AM)) { 366 dev_warn(priv->dev, 367 "modifying OR settings: 0x%08x -> 0x%08x", 368 reg_or_cur, reg_or_new); 369 } 370 } 371 372 /* configure the bank (force base address and GPCM) */ 373 reg_br_new &= ~(BR_BA | BR_MSEL); 374 reg_br_new |= fsl_lbc_addr(res->start) | BR_MS_GPCM | BR_V; 375 out_be32(&priv->lbc->bank[priv->bank].or, reg_or_new); 376 out_be32(&priv->lbc->bank[priv->bank].br, reg_br_new); 377 378 /* set all UIO data */ 379 info->mem[0].name = devm_kasprintf(&pdev->dev, GFP_KERNEL, "%pOFn", node); 380 if (!info->mem[0].name) 381 return -ENODEV; 382 383 info->mem[0].internal_addr = base; 384 info->mem[0].addr = res->start; 385 info->mem[0].size = resource_size(res); 386 info->mem[0].memtype = UIO_MEM_PHYS; 387 info->priv = priv; 388 info->name = uio_name; 389 info->version = "0.0.1"; 390 if (irq) { 391 if (priv->irq_handler) { 392 info->irq = irq; 393 info->irq_flags = IRQF_SHARED; 394 info->handler = priv->irq_handler; 395 } else { 396 irq = 0; 397 dev_warn(priv->dev, "ignoring irq, no handler\n"); 398 } 399 } 400 401 if (priv->init) 402 priv->init(info); 403 404 /* register UIO device */ 405 if (uio_register_device(priv->dev, info) != 0) { 406 dev_err(priv->dev, "UIO registration failed\n"); 407 ret = -ENODEV; 408 goto out_err2; 409 } 410 411 /* store private data */ 412 platform_set_drvdata(pdev, info); 413 414 dev_info(priv->dev, 415 "eLBC/GPCM device (%s) at 0x%llx, bank %d, irq=%d\n", 416 priv->name, (unsigned long long)res->start, priv->bank, 417 irq ? : -1); 418 419 return 0; 420 out_err2: 421 if (priv->shutdown) 422 priv->shutdown(info, true); 423 return ret; 424 } 425 -- 0-DAY CI Kernel Test 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