drivers/video/fbdev/amifb.c:3375:32: sparse: sparse: incorrect type in argument 1 (different address spaces)

From: kernel test robot
Date: Tue Dec 05 2023 - 04:50:55 EST

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tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head: bee0e7762ad2c6025b9f5245c040fcc36ef2bde8
commit: aa5222e92f8000ed3c1c38dddf11c83222aadfb3 sched/deadline: Don't use dubious signed bitfields
date: 6 years ago
config: m68k-randconfig-r131-20231129 (https://download.01.org/0day-ci/archive/20231205/202312051741.BVXr9CRP-lkp@xxxxxxxxx/config)
compiler: m68k-linux-gcc (GCC) 13.2.0
reproduce: (https://download.01.org/0day-ci/archive/20231205/202312051741.BVXr9CRP-lkp@xxxxxxxxx/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@xxxxxxxxx>
| Closes: https://lore.kernel.org/oe-kbuild-all/202312051741.BVXr9CRP-lkp@xxxxxxxxx/

sparse warnings: (new ones prefixed by >>)
>> drivers/video/fbdev/amifb.c:3375:32: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void *dst @@ got char [noderef] __iomem *screen_base @@
drivers/video/fbdev/amifb.c:3375:32: sparse: expected void *dst
drivers/video/fbdev/amifb.c:3375:32: sparse: got char [noderef] __iomem *screen_base
>> drivers/video/fbdev/amifb.c:3713:35: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected char [noderef] __iomem *screen_base @@ got char * @@
drivers/video/fbdev/amifb.c:3713:35: sparse: expected char [noderef] __iomem *screen_base
drivers/video/fbdev/amifb.c:3713:35: sparse: got char *
>> drivers/video/fbdev/amifb.c:3755:26: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void [noderef] __iomem *addr @@ got void * @@
drivers/video/fbdev/amifb.c:3755:26: sparse: expected void [noderef] __iomem *addr
drivers/video/fbdev/amifb.c:3755:26: sparse: got void *
drivers/video/fbdev/amifb.c:3772:26: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void [noderef] __iomem *addr @@ got void * @@
drivers/video/fbdev/amifb.c:3772:26: sparse: expected void [noderef] __iomem *addr
drivers/video/fbdev/amifb.c:3772:26: sparse: got void *
In file included from include/linux/workqueue.h:9,
from include/linux/srcu.h:34,
from include/linux/notifier.h:16,
from include/linux/memory_hotplug.h:7,
from include/linux/mmzone.h:780,
from include/linux/gfp.h:6,
from include/linux/umh.h:4,
from include/linux/kmod.h:22,
from include/linux/module.h:13,
from drivers/video/fbdev/amifb.c:43:
include/linux/timer.h: In function 'timer_setup':
include/linux/timer.h:159:30: warning: cast between incompatible function types from 'void (*)(struct timer_list *)' to 'void (*)(long unsigned int)' [-Wcast-function-type]
159 | __setup_timer(timer, (TIMER_FUNC_TYPE)callback,
| ^
include/linux/timer.h:126:39: note: in definition of macro '__setup_timer'
126 | (_timer)->function = (_fn); 29- | ^~~
include/linux/timer.h: In function 'timer_setup_on_stack':
include/linux/timer.h:167:39: warning: cast between incompatible function types from 'void (*)(struct timer_list *)' to 'void (*)(long unsigned int)' [-Wcast-function-type]
167 | __setup_timer_on_stack(timer, (TIMER_FUNC_TYPE)callback,
| ^
include/linux/timer.h:133:39: note: in definition of macro '__setup_timer_on_stack'
133 | (_timer)->function = (_fn); 36- | ^~~
drivers/video/fbdev/amifb.c: In function 'ami_decode_var':
drivers/video/fbdev/amifb.c:1127:23: warning: variable 'vtotal' set but not used [-Wunused-but-set-variable]
1127 | u_int htotal, vtotal;
| ^~~~~~
drivers/video/fbdev/amifb.c:1127:15: warning: variable 'htotal' set but not used [-Wunused-but-set-variable]
1127 | u_int htotal, vtotal;
| ^~~~~~
drivers/video/fbdev/amifb.c: In function 'ami_get_var_cursorinfo':
drivers/video/fbdev/amifb.c:1848:19: warning: variable 'alloc' set but not used [-Wunused-but-set-variable]
1848 | int size, alloc;
| ^~~~~
drivers/video/fbdev/amifb.c: In function 'amifb_pan_display':
drivers/video/fbdev/amifb.c:2540:34: warning: comparison of unsigned expression in '< 0' is always false [-Wtype-limits]
2540 | if (var->yoffset < 0 ||
| ^
drivers/video/fbdev/amifb.c: At top level:
include/linux/module.h:131:13: warning: 'init_module' specifies less restrictive attribute than its target 'amifb_driver_init': 'cold' [-Wmissing-attributes]
131 | int init_module(void) __attribute__((alias(#initfn)));
| ^~~~~~~~~~~
include/linux/platform_device.h:251:1: note: in expansion of macro 'module_init'
251 | module_init(__platform_driver##_init); 58- | ^~~~~~~~~~~
drivers/video/fbdev/amifb.c:3786:1: note: in expansion of macro 'module_platform_driver_probe'
3786 | module_platform_driver_probe(amifb_driver, amifb_probe);
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~
In file included from drivers/video/fbdev/amifb.c:53:
drivers/video/fbdev/amifb.c:3786:30: note: 'init_module' target declared here
3786 | module_platform_driver_probe(amifb_driver, amifb_probe);
| ^~~~~~~~~~~~
include/linux/platform_device.h:246:19: note: in definition of macro 'module_platform_driver_probe'
246 | static int __init __platform_driver##_init(void) 68- | ^~~~~~~~~~~~~~~~~
include/linux/module.h:137:14: warning: 'cleanup_module' specifies less restrictive attribute than its target 'amifb_driver_exit': 'cold' [-Wmissing-attributes]
137 | void cleanup_module(void) __attribute__((alias(#exitfn)));
| ^~~~~~~~~~~~~~
include/linux/platform_device.h:256:1: note: in expansion of macro 'module_exit'
256 | module_exit(__platform_driver##_exit);
| ^~~~~~~~~~~
drivers/video/fbdev/amifb.c:3786:1: note: in expansion of macro 'module_platform_driver_probe'
3786 | module_platform_driver_probe(amifb_driver, amifb_probe);
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/video/fbdev/amifb.c:3786:30: note: 'cleanup_module' target declared here
3786 | module_platform_driver_probe(amifb_driver, amifb_probe);
| ^~~~~~~~~~~~
include/linux/platform_device.h:252:20: note: in definition of macro 'module_platform_driver_probe'
252 | static void __exit __platform_driver##_exit(void) 83- | ^~~~~~~~~~~~~~~~~
drivers/video/fbdev/amifb.c:2344:19: warning: 'amifb_setup' defined but not used [-Wunused-function]
2344 | static int __init amifb_setup(char *options)
| ^~~~~~~~~~~

vim +3375 drivers/video/fbdev/amifb.c

f1cbb17ac73993 drivers/video/amifb.c Geert Uytterhoeven 2011-11-21 3334
f1cbb17ac73993 drivers/video/amifb.c Geert Uytterhoeven 2011-11-21 3335
f1cbb17ac73993 drivers/video/amifb.c Geert Uytterhoeven 2011-11-21 3336 static void amifb_imageblit(struct fb_info *info, const struct fb_image *image)
f1cbb17ac73993 drivers/video/amifb.c Geert Uytterhoeven 2011-11-21 3337 {
423a53086ce409 drivers/video/amifb.c Geert Uytterhoeven 2011-11-21 3338 struct amifb_par *par = info->par;
f1cbb17ac73993 drivers/video/amifb.c Geert Uytterhoeven 2011-11-21 3339 int x2, y2;
f1cbb17ac73993 drivers/video/amifb.c Geert Uytterhoeven 2011-11-21 3340 unsigned long *dst;
f1cbb17ac73993 drivers/video/amifb.c Geert Uytterhoeven 2011-11-21 3341 int dst_idx;
f1cbb17ac73993 drivers/video/amifb.c Geert Uytterhoeven 2011-11-21 3342 const char *src;
f1cbb17ac73993 drivers/video/amifb.c Geert Uytterhoeven 2011-11-21 3343 u32 dx, dy, width, height, pitch;
f1cbb17ac73993 drivers/video/amifb.c Geert Uytterhoeven 2011-11-21 3344
f1cbb17ac73993 drivers/video/amifb.c Geert Uytterhoeven 2011-11-21 3345 /*
f1cbb17ac73993 drivers/video/amifb.c Geert Uytterhoeven 2011-11-21 3346 * We could use hardware clipping but on many cards you get around
f1cbb17ac73993 drivers/video/amifb.c Geert Uytterhoeven 2011-11-21 3347 * hardware clipping by writing to framebuffer directly like we are
f1cbb17ac73993 drivers/video/amifb.c Geert Uytterhoeven 2011-11-21 3348 * doing here.
f1cbb17ac73993 drivers/video/amifb.c Geert Uytterhoeven 2011-11-21 3349 */
f1cbb17ac73993 drivers/video/amifb.c Geert Uytterhoeven 2011-11-21 3350 x2 = image->dx + image->width;
f1cbb17ac73993 drivers/video/amifb.c Geert Uytterhoeven 2011-11-21 3351 y2 = image->dy + image->height;
f1cbb17ac73993 drivers/video/amifb.c Geert Uytterhoeven 2011-11-21 3352 dx = image->dx;
f1cbb17ac73993 drivers/video/amifb.c Geert Uytterhoeven 2011-11-21 3353 dy = image->dy;
f1cbb17ac73993 drivers/video/amifb.c Geert Uytterhoeven 2011-11-21 3354 x2 = x2 < info->var.xres_virtual ? x2 : info->var.xres_virtual;
f1cbb17ac73993 drivers/video/amifb.c Geert Uytterhoeven 2011-11-21 3355 y2 = y2 < info->var.yres_virtual ? y2 : info->var.yres_virtual;
f1cbb17ac73993 drivers/video/amifb.c Geert Uytterhoeven 2011-11-21 3356 width = x2 - dx;
f1cbb17ac73993 drivers/video/amifb.c Geert Uytterhoeven 2011-11-21 3357 height = y2 - dy;
f1cbb17ac73993 drivers/video/amifb.c Geert Uytterhoeven 2011-11-21 3358
f1cbb17ac73993 drivers/video/amifb.c Geert Uytterhoeven 2011-11-21 3359 if (image->depth == 1) {
f1cbb17ac73993 drivers/video/amifb.c Geert Uytterhoeven 2011-11-21 3360 dst = (unsigned long *)
f1cbb17ac73993 drivers/video/amifb.c Geert Uytterhoeven 2011-11-21 3361 ((unsigned long)info->screen_base & ~(BYTES_PER_LONG - 1));
f1cbb17ac73993 drivers/video/amifb.c Geert Uytterhoeven 2011-11-21 3362 dst_idx = ((unsigned long)info->screen_base & (BYTES_PER_LONG - 1)) * 8;
f1cbb17ac73993 drivers/video/amifb.c Geert Uytterhoeven 2011-11-21 3363 dst_idx += dy * par->next_line * 8 + dx;
f1cbb17ac73993 drivers/video/amifb.c Geert Uytterhoeven 2011-11-21 3364 src = image->data;
f1cbb17ac73993 drivers/video/amifb.c Geert Uytterhoeven 2011-11-21 3365 pitch = (image->width + 7) / 8;
f1cbb17ac73993 drivers/video/amifb.c Geert Uytterhoeven 2011-11-21 3366 while (height--) {
f1cbb17ac73993 drivers/video/amifb.c Geert Uytterhoeven 2011-11-21 3367 expand_one_line(info->var.bits_per_pixel,
f1cbb17ac73993 drivers/video/amifb.c Geert Uytterhoeven 2011-11-21 3368 par->next_plane, dst, dst_idx, width,
f1cbb17ac73993 drivers/video/amifb.c Geert Uytterhoeven 2011-11-21 3369 src, image->bg_color,
f1cbb17ac73993 drivers/video/amifb.c Geert Uytterhoeven 2011-11-21 3370 image->fg_color);
f1cbb17ac73993 drivers/video/amifb.c Geert Uytterhoeven 2011-11-21 3371 dst_idx += par->next_line * 8;
f1cbb17ac73993 drivers/video/amifb.c Geert Uytterhoeven 2011-11-21 3372 src += pitch;
f1cbb17ac73993 drivers/video/amifb.c Geert Uytterhoeven 2011-11-21 3373 }
f1cbb17ac73993 drivers/video/amifb.c Geert Uytterhoeven 2011-11-21 3374 } else {
f1cbb17ac73993 drivers/video/amifb.c Geert Uytterhoeven 2011-11-21 @3375 c2p_planar(info->screen_base, image->data, dx, dy, width,
f1cbb17ac73993 drivers/video/amifb.c Geert Uytterhoeven 2011-11-21 3376 height, par->next_line, par->next_plane,
f1cbb17ac73993 drivers/video/amifb.c Geert Uytterhoeven 2011-11-21 3377 image->width, info->var.bits_per_pixel);
^1da177e4c3f41 drivers/video/amifb.c Linus Torvalds 2005-04-16 3378 }
^1da177e4c3f41 drivers/video/amifb.c Linus Torvalds 2005-04-16 3379 }
f1cbb17ac73993 drivers/video/amifb.c Geert Uytterhoeven 2011-11-21 3380

:::::: The code at line 3375 was first introduced by commit
:::::: f1cbb17ac73993225402d7e40a0694c502570876 fbdev/amifb: Reorder functions to remove forward declarations

:::::: TO: Geert Uytterhoeven <geert@xxxxxxxxxxxxxx>
:::::: CC: Florian Tobias Schandinat <FlorianSchandinat@xxxxxx>

--
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https://github.com/intel/lkp-tests/wiki

Next message: Florian Weimer: "Re: [PATCH] ELF: supply userspace with available page shifts (AT_PAGE_SHIFT_LIST)"
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Next in thread: Dan Carpenter: "Re: drivers/video/fbdev/amifb.c:3375:32: sparse: sparse: incorrect type in argument 1 (different address spaces)"
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