Messages in this thread | | | Date | Fri, 4 Jun 2021 11:11:24 +0800 | From | kernel test robot <> | Subject | drivers/video/fbdev/s3c2410fb.c:650:17: sparse: sparse: incorrect type in argument 1 (different address spaces) |
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tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: f88cd3fb9df228e5ce4e13ec3dbad671ddb2146e commit: 421015713b306e47af95d4d61cdfbd96d462e4cb ARM: 9017/2: Enable KASan for ARM date: 7 months ago config: arm-randconfig-s031-20210604 (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: v0.6.3-341-g8af24329-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__' W=1 ARCH=arm
If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp@intel.com>
sparse warnings: (new ones prefixed by >>) drivers/video/fbdev/s3c2410fb.c:643:27: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected char [noderef] __iomem *screen_base @@ got void * @@ drivers/video/fbdev/s3c2410fb.c:643:27: sparse: expected char [noderef] __iomem *screen_base drivers/video/fbdev/s3c2410fb.c:643:27: sparse: got void * >> drivers/video/fbdev/s3c2410fb.c:650:17: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void *s @@ got char [noderef] __iomem *screen_base @@ drivers/video/fbdev/s3c2410fb.c:650:17: sparse: expected void *s drivers/video/fbdev/s3c2410fb.c:650:17: sparse: got char [noderef] __iomem *screen_base drivers/video/fbdev/s3c2410fb.c:666:25: sparse: sparse: incorrect type in argument 3 (different address spaces) @@ expected void *cpu_addr @@ got char [noderef] __iomem *screen_base @@ drivers/video/fbdev/s3c2410fb.c:666:25: sparse: expected void *cpu_addr drivers/video/fbdev/s3c2410fb.c:666:25: sparse: got char [noderef] __iomem *screen_base drivers/video/fbdev/s3c2410fb.c:666:25: sparse: sparse: incorrect type in argument 3 (different address spaces) @@ expected void *cpu_addr @@ got char [noderef] __iomem *screen_base @@ drivers/video/fbdev/s3c2410fb.c:666:25: sparse: expected void *cpu_addr drivers/video/fbdev/s3c2410fb.c:666:25: sparse: got char [noderef] __iomem *screen_base
vim +650 drivers/video/fbdev/s3c2410fb.c
20fd5767689124 drivers/video/s3c2410fb.c Arnaud Patard 2005-09-09 626 20fd5767689124 drivers/video/s3c2410fb.c Arnaud Patard 2005-09-09 627 /* 20fd5767689124 drivers/video/s3c2410fb.c Arnaud Patard 2005-09-09 628 * s3c2410fb_map_video_memory(): 20fd5767689124 drivers/video/s3c2410fb.c Arnaud Patard 2005-09-09 629 * Allocates the DRAM memory for the frame buffer. This buffer is 20fd5767689124 drivers/video/s3c2410fb.c Arnaud Patard 2005-09-09 630 * remapped into a non-cached, non-buffered, memory region to 20fd5767689124 drivers/video/s3c2410fb.c Arnaud Patard 2005-09-09 631 * allow palette and pixel writes to occur without flushing the 20fd5767689124 drivers/video/s3c2410fb.c Arnaud Patard 2005-09-09 632 * cache. Once this area is remapped, all virtual memory 20fd5767689124 drivers/video/s3c2410fb.c Arnaud Patard 2005-09-09 633 * access to the video memory should occur at the new region. 20fd5767689124 drivers/video/s3c2410fb.c Arnaud Patard 2005-09-09 634 */ 48c68c4f1b5424 drivers/video/s3c2410fb.c Greg Kroah-Hartman 2012-12-21 635 static int s3c2410fb_map_video_memory(struct fb_info *info) 20fd5767689124 drivers/video/s3c2410fb.c Arnaud Patard 2005-09-09 636 { 110c1fa75463c4 drivers/video/s3c2410fb.c Krzysztof Helt 2007-10-16 637 struct s3c2410fb_info *fbi = info->par; 9fa7bc016a6886 drivers/video/s3c2410fb.c Krzysztof Helt 2007-10-16 638 dma_addr_t map_dma; 9fa7bc016a6886 drivers/video/s3c2410fb.c Krzysztof Helt 2007-10-16 639 unsigned map_size = PAGE_ALIGN(info->fix.smem_len); 110c1fa75463c4 drivers/video/s3c2410fb.c Krzysztof Helt 2007-10-16 640 38a02f560752a8 drivers/video/s3c2410fb.c Ben Dooks 2008-02-06 641 dprintk("map_video_memory(fbi=%p) map_size %u\n", fbi, map_size); 20fd5767689124 drivers/video/s3c2410fb.c Arnaud Patard 2005-09-09 642 f6e45661f9be54 drivers/video/fbdev/s3c2410fb.c Luis R. Rodriguez 2016-01-22 643 info->screen_base = dma_alloc_wc(fbi->dev, map_size, &map_dma, f6e45661f9be54 drivers/video/fbdev/s3c2410fb.c Luis R. Rodriguez 2016-01-22 644 GFP_KERNEL); 20fd5767689124 drivers/video/s3c2410fb.c Arnaud Patard 2005-09-09 645 9fa7bc016a6886 drivers/video/s3c2410fb.c Krzysztof Helt 2007-10-16 646 if (info->screen_base) { 20fd5767689124 drivers/video/s3c2410fb.c Arnaud Patard 2005-09-09 647 /* prevent initial garbage on screen */ 20fd5767689124 drivers/video/s3c2410fb.c Arnaud Patard 2005-09-09 648 dprintk("map_video_memory: clear %p:%08x\n", 9fa7bc016a6886 drivers/video/s3c2410fb.c Krzysztof Helt 2007-10-16 649 info->screen_base, map_size); c0d40335353e1c drivers/video/s3c2410fb.c Ben Dooks 2008-02-06 @650 memset(info->screen_base, 0x00, map_size); 20fd5767689124 drivers/video/s3c2410fb.c Arnaud Patard 2005-09-09 651 9fa7bc016a6886 drivers/video/s3c2410fb.c Krzysztof Helt 2007-10-16 652 info->fix.smem_start = map_dma; 20fd5767689124 drivers/video/s3c2410fb.c Arnaud Patard 2005-09-09 653 9fa7bc016a6886 drivers/video/s3c2410fb.c Krzysztof Helt 2007-10-16 654 dprintk("map_video_memory: dma=%08lx cpu=%p size=%08x\n", 9fa7bc016a6886 drivers/video/s3c2410fb.c Krzysztof Helt 2007-10-16 655 info->fix.smem_start, info->screen_base, map_size); 20fd5767689124 drivers/video/s3c2410fb.c Arnaud Patard 2005-09-09 656 } 20fd5767689124 drivers/video/s3c2410fb.c Arnaud Patard 2005-09-09 657 9fa7bc016a6886 drivers/video/s3c2410fb.c Krzysztof Helt 2007-10-16 658 return info->screen_base ? 0 : -ENOMEM; 20fd5767689124 drivers/video/s3c2410fb.c Arnaud Patard 2005-09-09 659 } 20fd5767689124 drivers/video/s3c2410fb.c Arnaud Patard 2005-09-09 660
:::::: The code at line 650 was first introduced by commit :::::: c0d40335353e1c89c9c885e5af4d0be0f1a50483 FB/S3C2410: ensure S3C2410 framebuffer clears initial memory to black
:::::: TO: Ben Dooks <ben-linux@fluff.org> :::::: CC: Linus Torvalds <torvalds@woody.linux-foundation.org>
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