drivers/mtd/nand/onenand/onenand_omap2.c:385:17: sparse: sparse: incorrect type in argument 2 (different address spaces)

From: kernel test robot
Date: Wed Feb 17 2021 - 14:28:00 EST

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tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head: f40ddce88593482919761f74910f42f4b84c004b
commit: 421015713b306e47af95d4d61cdfbd96d462e4cb ARM: 9017/2: Enable KASan for ARM
date: 4 months ago
config: arm-randconfig-s032-20210218 (attached as .config)
compiler: arm-linux-gnueabi-gcc (GCC) 9.3.0
reproduce:
wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
chmod +x ~/bin/make.cross
# apt-get install sparse
# sparse version: v0.6.3-215-g0fb77bb6-dirty
# https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=421015713b306e47af95d4d61cdfbd96d462e4cb
git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
git fetch --no-tags linus master
git checkout 421015713b306e47af95d4d61cdfbd96d462e4cb
# save the attached .config to linux build tree
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' ARCH=arm

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

"sparse warnings: (new ones prefixed by >>)"
>> drivers/mtd/nand/onenand/onenand_omap2.c:385:17: sparse: sparse: incorrect type in argument 2 (different address spaces) @@ expected void const *src @@ got void [noderef] __iomem * @@
drivers/mtd/nand/onenand/onenand_omap2.c:385:17: sparse: expected void const *src
drivers/mtd/nand/onenand/onenand_omap2.c:385:17: sparse: got void [noderef] __iomem *
drivers/mtd/nand/onenand/onenand_omap2.c:404:9: sparse: sparse: incorrect type in argument 2 (different address spaces) @@ expected void const *src @@ got void [noderef] __iomem * @@
drivers/mtd/nand/onenand/onenand_omap2.c:404:9: sparse: expected void const *src
drivers/mtd/nand/onenand/onenand_omap2.c:404:9: sparse: got void [noderef] __iomem *
>> drivers/mtd/nand/onenand/onenand_omap2.c:444:9: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void *dest @@ got void [noderef] __iomem * @@
drivers/mtd/nand/onenand/onenand_omap2.c:444:9: sparse: expected void *dest
drivers/mtd/nand/onenand/onenand_omap2.c:444:9: sparse: got void [noderef] __iomem *

vim +385 drivers/mtd/nand/onenand/onenand_omap2.c

3621311695f5b1 drivers/mtd/onenand/omap2.c Peter Ujfalusi 2018-01-12 359
fb25070afdf07c drivers/mtd/onenand/omap2.c Ladislav Michl 2018-01-12 360 static int omap2_onenand_read_bufferram(struct mtd_info *mtd, int area,
36cd4fb5d277f3 drivers/mtd/onenand/omap2.c Adrian Hunter 2008-08-06 361 unsigned char *buffer, int offset,
36cd4fb5d277f3 drivers/mtd/onenand/omap2.c Adrian Hunter 2008-08-06 362 size_t count)
36cd4fb5d277f3 drivers/mtd/onenand/omap2.c Adrian Hunter 2008-08-06 363 {
36cd4fb5d277f3 drivers/mtd/onenand/omap2.c Adrian Hunter 2008-08-06 364 struct omap2_onenand *c = container_of(mtd, struct omap2_onenand, mtd);
36cd4fb5d277f3 drivers/mtd/onenand/omap2.c Adrian Hunter 2008-08-06 365 struct onenand_chip *this = mtd->priv;
6732cfd4cac514 drivers/mtd/nand/onenand/omap2.c Ladislav Michl 2018-05-02 366 struct device *dev = &c->pdev->dev;
36cd4fb5d277f3 drivers/mtd/onenand/omap2.c Adrian Hunter 2008-08-06 367 void *buf = (void *)buffer;
6732cfd4cac514 drivers/mtd/nand/onenand/omap2.c Ladislav Michl 2018-05-02 368 dma_addr_t dma_src, dma_dst;
6732cfd4cac514 drivers/mtd/nand/onenand/omap2.c Ladislav Michl 2018-05-02 369 int bram_offset, err;
36cd4fb5d277f3 drivers/mtd/onenand/omap2.c Adrian Hunter 2008-08-06 370 size_t xtra;
36cd4fb5d277f3 drivers/mtd/onenand/omap2.c Adrian Hunter 2008-08-06 371
36cd4fb5d277f3 drivers/mtd/onenand/omap2.c Adrian Hunter 2008-08-06 372 bram_offset = omap2_onenand_bufferram_offset(mtd, area) + area + offset;
6732cfd4cac514 drivers/mtd/nand/onenand/omap2.c Ladislav Michl 2018-05-02 373 /*
6732cfd4cac514 drivers/mtd/nand/onenand/omap2.c Ladislav Michl 2018-05-02 374 * If the buffer address is not DMA-able, len is not long enough to make
6732cfd4cac514 drivers/mtd/nand/onenand/omap2.c Ladislav Michl 2018-05-02 375 * DMA transfers profitable or panic_write() may be in an interrupt
6732cfd4cac514 drivers/mtd/nand/onenand/omap2.c Ladislav Michl 2018-05-02 376 * context fallback to PIO mode.
6732cfd4cac514 drivers/mtd/nand/onenand/omap2.c Ladislav Michl 2018-05-02 377 */
6732cfd4cac514 drivers/mtd/nand/onenand/omap2.c Ladislav Michl 2018-05-02 378 if (!virt_addr_valid(buf) || bram_offset & 3 || (size_t)buf & 3 ||
6732cfd4cac514 drivers/mtd/nand/onenand/omap2.c Ladislav Michl 2018-05-02 379 count < 384 || in_interrupt() || oops_in_progress)
36cd4fb5d277f3 drivers/mtd/onenand/omap2.c Adrian Hunter 2008-08-06 380 goto out_copy;
36cd4fb5d277f3 drivers/mtd/onenand/omap2.c Adrian Hunter 2008-08-06 381
36cd4fb5d277f3 drivers/mtd/onenand/omap2.c Adrian Hunter 2008-08-06 382 xtra = count & 3;
36cd4fb5d277f3 drivers/mtd/onenand/omap2.c Adrian Hunter 2008-08-06 383 if (xtra) {
36cd4fb5d277f3 drivers/mtd/onenand/omap2.c Adrian Hunter 2008-08-06 384 count -= xtra;
36cd4fb5d277f3 drivers/mtd/onenand/omap2.c Adrian Hunter 2008-08-06 @385 memcpy(buf + count, this->base + bram_offset + count, xtra);
36cd4fb5d277f3 drivers/mtd/onenand/omap2.c Adrian Hunter 2008-08-06 386 }
36cd4fb5d277f3 drivers/mtd/onenand/omap2.c Adrian Hunter 2008-08-06 387
6732cfd4cac514 drivers/mtd/nand/onenand/omap2.c Ladislav Michl 2018-05-02 388 dma_dst = dma_map_single(dev, buf, count, DMA_FROM_DEVICE);
36cd4fb5d277f3 drivers/mtd/onenand/omap2.c Adrian Hunter 2008-08-06 389 dma_src = c->phys_base + bram_offset;
36cd4fb5d277f3 drivers/mtd/onenand/omap2.c Adrian Hunter 2008-08-06 390
6732cfd4cac514 drivers/mtd/nand/onenand/omap2.c Ladislav Michl 2018-05-02 391 if (dma_mapping_error(dev, dma_dst)) {
6732cfd4cac514 drivers/mtd/nand/onenand/omap2.c Ladislav Michl 2018-05-02 392 dev_err(dev, "Couldn't DMA map a %d byte buffer\n", count);
36cd4fb5d277f3 drivers/mtd/onenand/omap2.c Adrian Hunter 2008-08-06 393 goto out_copy;
36cd4fb5d277f3 drivers/mtd/onenand/omap2.c Adrian Hunter 2008-08-06 394 }
36cd4fb5d277f3 drivers/mtd/onenand/omap2.c Adrian Hunter 2008-08-06 395
6732cfd4cac514 drivers/mtd/nand/onenand/omap2.c Ladislav Michl 2018-05-02 396 err = omap2_onenand_dma_transfer(c, dma_src, dma_dst, count);
6732cfd4cac514 drivers/mtd/nand/onenand/omap2.c Ladislav Michl 2018-05-02 397 dma_unmap_single(dev, dma_dst, count, DMA_FROM_DEVICE);
6732cfd4cac514 drivers/mtd/nand/onenand/omap2.c Ladislav Michl 2018-05-02 398 if (!err)
36cd4fb5d277f3 drivers/mtd/onenand/omap2.c Adrian Hunter 2008-08-06 399 return 0;
36cd4fb5d277f3 drivers/mtd/onenand/omap2.c Adrian Hunter 2008-08-06 400
6732cfd4cac514 drivers/mtd/nand/onenand/omap2.c Ladislav Michl 2018-05-02 401 dev_err(dev, "timeout waiting for DMA\n");
6732cfd4cac514 drivers/mtd/nand/onenand/omap2.c Ladislav Michl 2018-05-02 402
36cd4fb5d277f3 drivers/mtd/onenand/omap2.c Adrian Hunter 2008-08-06 403 out_copy:
36cd4fb5d277f3 drivers/mtd/onenand/omap2.c Adrian Hunter 2008-08-06 404 memcpy(buf, this->base + bram_offset, count);
36cd4fb5d277f3 drivers/mtd/onenand/omap2.c Adrian Hunter 2008-08-06 405 return 0;
36cd4fb5d277f3 drivers/mtd/onenand/omap2.c Adrian Hunter 2008-08-06 406 }
36cd4fb5d277f3 drivers/mtd/onenand/omap2.c Adrian Hunter 2008-08-06 407
fb25070afdf07c drivers/mtd/onenand/omap2.c Ladislav Michl 2018-01-12 408 static int omap2_onenand_write_bufferram(struct mtd_info *mtd, int area,
36cd4fb5d277f3 drivers/mtd/onenand/omap2.c Adrian Hunter 2008-08-06 409 const unsigned char *buffer,
36cd4fb5d277f3 drivers/mtd/onenand/omap2.c Adrian Hunter 2008-08-06 410 int offset, size_t count)
36cd4fb5d277f3 drivers/mtd/onenand/omap2.c Adrian Hunter 2008-08-06 411 {
36cd4fb5d277f3 drivers/mtd/onenand/omap2.c Adrian Hunter 2008-08-06 412 struct omap2_onenand *c = container_of(mtd, struct omap2_onenand, mtd);
36cd4fb5d277f3 drivers/mtd/onenand/omap2.c Adrian Hunter 2008-08-06 413 struct onenand_chip *this = mtd->priv;
6732cfd4cac514 drivers/mtd/nand/onenand/omap2.c Ladislav Michl 2018-05-02 414 struct device *dev = &c->pdev->dev;
36cd4fb5d277f3 drivers/mtd/onenand/omap2.c Adrian Hunter 2008-08-06 415 void *buf = (void *)buffer;
6732cfd4cac514 drivers/mtd/nand/onenand/omap2.c Ladislav Michl 2018-05-02 416 dma_addr_t dma_src, dma_dst;
6732cfd4cac514 drivers/mtd/nand/onenand/omap2.c Ladislav Michl 2018-05-02 417 int bram_offset, err;
36cd4fb5d277f3 drivers/mtd/onenand/omap2.c Adrian Hunter 2008-08-06 418
36cd4fb5d277f3 drivers/mtd/onenand/omap2.c Adrian Hunter 2008-08-06 419 bram_offset = omap2_onenand_bufferram_offset(mtd, area) + area + offset;
6732cfd4cac514 drivers/mtd/nand/onenand/omap2.c Ladislav Michl 2018-05-02 420 /*
6732cfd4cac514 drivers/mtd/nand/onenand/omap2.c Ladislav Michl 2018-05-02 421 * If the buffer address is not DMA-able, len is not long enough to make
6732cfd4cac514 drivers/mtd/nand/onenand/omap2.c Ladislav Michl 2018-05-02 422 * DMA transfers profitable or panic_write() may be in an interrupt
6732cfd4cac514 drivers/mtd/nand/onenand/omap2.c Ladislav Michl 2018-05-02 423 * context fallback to PIO mode.
6732cfd4cac514 drivers/mtd/nand/onenand/omap2.c Ladislav Michl 2018-05-02 424 */
6732cfd4cac514 drivers/mtd/nand/onenand/omap2.c Ladislav Michl 2018-05-02 425 if (!virt_addr_valid(buf) || bram_offset & 3 || (size_t)buf & 3 ||
6732cfd4cac514 drivers/mtd/nand/onenand/omap2.c Ladislav Michl 2018-05-02 426 count < 384 || in_interrupt() || oops_in_progress)
36cd4fb5d277f3 drivers/mtd/onenand/omap2.c Adrian Hunter 2008-08-06 427 goto out_copy;
36cd4fb5d277f3 drivers/mtd/onenand/omap2.c Adrian Hunter 2008-08-06 428
6732cfd4cac514 drivers/mtd/nand/onenand/omap2.c Ladislav Michl 2018-05-02 429 dma_src = dma_map_single(dev, buf, count, DMA_TO_DEVICE);
36cd4fb5d277f3 drivers/mtd/onenand/omap2.c Adrian Hunter 2008-08-06 430 dma_dst = c->phys_base + bram_offset;
6732cfd4cac514 drivers/mtd/nand/onenand/omap2.c Ladislav Michl 2018-05-02 431 if (dma_mapping_error(dev, dma_src)) {
6732cfd4cac514 drivers/mtd/nand/onenand/omap2.c Ladislav Michl 2018-05-02 432 dev_err(dev, "Couldn't DMA map a %d byte buffer\n", count);
36cd4fb5d277f3 drivers/mtd/onenand/omap2.c Adrian Hunter 2008-08-06 433 goto out_copy;
36cd4fb5d277f3 drivers/mtd/onenand/omap2.c Adrian Hunter 2008-08-06 434 }
36cd4fb5d277f3 drivers/mtd/onenand/omap2.c Adrian Hunter 2008-08-06 435
6732cfd4cac514 drivers/mtd/nand/onenand/omap2.c Ladislav Michl 2018-05-02 436 err = omap2_onenand_dma_transfer(c, dma_src, dma_dst, count);
6732cfd4cac514 drivers/mtd/nand/onenand/omap2.c Ladislav Michl 2018-05-02 437 dma_unmap_page(dev, dma_src, count, DMA_TO_DEVICE);
6732cfd4cac514 drivers/mtd/nand/onenand/omap2.c Ladislav Michl 2018-05-02 438 if (!err)
36cd4fb5d277f3 drivers/mtd/onenand/omap2.c Adrian Hunter 2008-08-06 439 return 0;
36cd4fb5d277f3 drivers/mtd/onenand/omap2.c Adrian Hunter 2008-08-06 440
6732cfd4cac514 drivers/mtd/nand/onenand/omap2.c Ladislav Michl 2018-05-02 441 dev_err(dev, "timeout waiting for DMA\n");
6732cfd4cac514 drivers/mtd/nand/onenand/omap2.c Ladislav Michl 2018-05-02 442
36cd4fb5d277f3 drivers/mtd/onenand/omap2.c Adrian Hunter 2008-08-06 443 out_copy:
36cd4fb5d277f3 drivers/mtd/onenand/omap2.c Adrian Hunter 2008-08-06 @444 memcpy(this->base + bram_offset, buf, count);
36cd4fb5d277f3 drivers/mtd/onenand/omap2.c Adrian Hunter 2008-08-06 445 return 0;
36cd4fb5d277f3 drivers/mtd/onenand/omap2.c Adrian Hunter 2008-08-06 446 }
36cd4fb5d277f3 drivers/mtd/onenand/omap2.c Adrian Hunter 2008-08-06 447

:::::: The code at line 385 was first introduced by commit
:::::: 36cd4fb5d277f34fe9e4db0deac2d4efd7dff735 [MTD] [OneNAND] Add OMAP2 / OMAP3 OneNAND driver

:::::: TO: Adrian Hunter <ext-adrian.hunter@xxxxxxxxx>
:::::: CC: David Woodhouse <David.Woodhouse@xxxxxxxxx>

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@xxxxxxxxxxxx

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