LinuxLists.cc - drivers/video/fbdev/pxafb.c:916:24: sparse: sparse: incorrect type in assignment (different address spaces)

2020-08-07 11:16:46

Subject: drivers/video/fbdev/pxafb.c:916:24: sparse: sparse: incorrect type in assignment (different address spaces)

tree: # apt-get install sparse
# sparse version: v0.6.2-118-ge1578773-dirty
If you fix the issue, kindly add following tag Reported-by: kernel test robot https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
sparse: use identifiers to define address spaces
as .config)
m/intel/lkp-tests/master/sbin/make.cross">https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
/> /> tree
make.cross C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' ARCH=arm
as appropriate
l-protection#84a2e8f0bfe8eff4c4edeaf0e1e8aae7ebe9a2e3f0bf"><[email protected]>
sparse: incorrect type in assignment (different address spaces) @@ expected void [noderef] __iomem *video_mem @@ got void * @@
expected void [noderef] __iomem *video_mem
got void *
sparse: incorrect type in argument 1 (different address spaces) @@ expected void const volatile *x @@ got void [noderef] __iomem *video_mem @@
expected void const volatile *x
got void [noderef] __iomem *video_mem
sparse: incorrect type in argument 1 (different address spaces) @@ expected void *virt @@ got void [noderef] __iomem *video_mem @@
expected void *virt
got void [noderef] __iomem *video_mem
sparse: incorrect type in assignment (different address spaces) @@ expected void [noderef] __iomem *video_mem @@ got void * @@
expected void [noderef] __iomem *video_mem
got void *
sparse: incorrect type in argument 1 (different address spaces) @@ expected void const volatile *x @@ got void [noderef] __iomem *video_mem @@
expected void const volatile *x
got void [noderef] __iomem *video_mem
sparse: incorrect type in argument 1 (different address spaces) @@ expected void *virt @@ got void [noderef] __iomem *video_mem @@
expected void *virt
got void [noderef] __iomem *video_mem
sparse: incorrect type in argument 1 (different address spaces) @@ expected void *virt @@ got void [noderef] __iomem *video_mem @@
expected void *virt
got void [noderef] __iomem *video_mem
sparse: sparse: incorrect type in initializer (different address spaces) @@ expected unsigned long [noderef] __user *register __p @@ got unsigned long *[addressable] data_size @@
expected unsigned long [noderef] __user *register __p
got unsigned long *[addressable] data_size
sparse: sparse: incorrect type in argument 2 (different address spaces) @@ expected void const [noderef] __user *from @@ got struct guid_t [usertype] *[addressable] vendor_guid @@
expected void const [noderef] __user *from
got struct guid_t [usertype] *[addressable] vendor_guid
sparse: sparse: incorrect type in argument 2 (different address spaces) @@ expected unsigned short [noderef] [usertype] __user *src @@ got unsigned short [usertype] *[addressable] variable_name @@
expected unsigned short [noderef] [usertype] __user *src
got unsigned short [usertype] *[addressable] variable_name
sparse: sparse: incorrect type in initializer (different address spaces) @@ expected unsigned long const [noderef] __user *__pu_ptr @@ got unsigned long [usertype] *[addressable] status @@
expected unsigned long const [noderef] __user *__pu_ptr
got unsigned long [usertype] *[addressable] status
sparse: sparse: incorrect type in initializer (different address spaces) @@ expected unsigned long const [noderef] __user *__pu_ptr @@ got unsigned long *[addressable] data_size @@
expected unsigned long const [noderef] __user *__pu_ptr
got unsigned long *[addressable] data_size
sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void [noderef] __user *to @@ got void *[addressable] data @@
expected void [noderef] __user *to
got void *[addressable] data
sparse: sparse: incorrect type in initializer (different address spaces) @@ expected unsigned int const [noderef] __user *__pu_ptr @@ got unsigned int [usertype] *[addressable] attributes @@
expected unsigned int const [noderef] __user *__pu_ptr
got unsigned int [usertype] *[addressable] attributes
sparse: sparse: incorrect type in initializer (different address spaces) @@ expected unsigned long const [noderef] __user *__pu_ptr @@ got unsigned long *[addressable] data_size @@
expected unsigned long const [noderef] __user *__pu_ptr
got unsigned long *[addressable] data_size
sparse: sparse: incorrect type in argument 2 (different address spaces) @@ expected void const [noderef] __user *from @@ got struct guid_t [usertype] *[addressable] vendor_guid @@
expected void const [noderef] __user *from
got struct guid_t [usertype] *[addressable] vendor_guid
sparse: sparse: incorrect type in argument 2 (different address spaces) @@ expected unsigned short [noderef] [usertype] __user *src @@ got unsigned short [usertype] *[addressable] variable_name @@
expected unsigned short [noderef] [usertype] __user *src
got unsigned short [usertype] *[addressable] variable_name
sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void const [noderef] __user * @@ got void *[addressable] data @@
expected void const [noderef] __user *
got void *[addressable] data
sparse: sparse: incorrect type in initializer (different address spaces) @@ expected unsigned long const [noderef] __user *__pu_ptr @@ got unsigned long [usertype] *[addressable] status @@
expected unsigned long const [noderef] __user *__pu_ptr
got unsigned long [usertype] *[addressable] status
sparse: sparse: incorrect type in initializer (different address spaces) @@ expected unsigned long const [noderef] __user *__pu_ptr @@ got unsigned long [usertype] *[addressable] status @@
expected unsigned long const [noderef] __user *__pu_ptr
got unsigned long [usertype] *[addressable] status
sparse: sparse: incorrect type in assignment (different address spaces) @@ expected struct efi_time_cap_t [noderef] [usertype] __user *cap_local @@ got struct efi_time_cap_t [usertype] * @@
expected struct efi_time_cap_t [noderef] [usertype] __user *cap_local
got struct efi_time_cap_t [usertype] *
sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void [noderef] __user *to @@ got struct efi_time_t [usertype] *[addressable] time @@
expected void [noderef] __user *to
got struct efi_time_t [usertype] *[addressable] time
sparse: sparse: incorrect type in argument 2 (different address spaces) @@ expected void const [noderef] __user *from @@ got struct efi_time_t [usertype] *[addressable] time @@
expected void const [noderef] __user *from
got struct efi_time_t [usertype] *[addressable] time
sparse: sparse: incorrect type in initializer (different address spaces) @@ expected unsigned long const [noderef] __user *__pu_ptr @@ got unsigned long [usertype] *[addressable] status @@
expected unsigned long const [noderef] __user *__pu_ptr
got unsigned long [usertype] *[addressable] status
sparse: sparse: incorrect type in initializer (different address spaces) @@ expected unsigned long const [noderef] __user *__pu_ptr @@ got unsigned long [usertype] *[addressable] status @@
expected unsigned long const [noderef] __user *__pu_ptr
got unsigned long [usertype] *[addressable] status
sparse: sparse: incorrect type in initializer (different address spaces) @@ expected unsigned char const [noderef] __user *__pu_ptr @@ got unsigned char [usertype] *[addressable] enabled @@
expected unsigned char const [noderef] __user *__pu_ptr
got unsigned char [usertype] *[addressable] enabled
sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void [noderef] __user *to @@ got struct efi_time_t [usertype] *[addressable] time @@
expected void [noderef] __user *to
got struct efi_time_t [usertype] *[addressable] time
sparse: sparse: incorrect type in argument 2 (different address spaces) @@ expected void const [noderef] __user *from @@ got struct efi_time_t [usertype] *[addressable] time @@
expected void const [noderef] __user *from
got struct efi_time_t [usertype] *[addressable] time
sparse: sparse: incorrect type in initializer (different address spaces) @@ expected unsigned long const [noderef] __user *__pu_ptr @@ got unsigned long [usertype] *[addressable] status @@
expected unsigned long const [noderef] __user *__pu_ptr
got unsigned long [usertype] *[addressable] status
sparse: sparse: incorrect type in initializer (different address spaces) @@ expected unsigned long [noderef] __user *register __p @@ got unsigned long *[addressable] variable_name_size @@
expected unsigned long [noderef] __user *register __p
got unsigned long *[addressable] variable_name_size
sparse: sparse: incorrect type in argument 2 (different address spaces) @@ expected void const [noderef] __user *from @@ got struct guid_t [usertype] *[addressable] vendor_guid @@
expected void const [noderef] __user *from
got struct guid_t [usertype] *[addressable] vendor_guid
sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected unsigned short [noderef] [usertype] __user *src @@ got unsigned short [usertype] *[addressable] variable_name @@
expected unsigned short [noderef] [usertype] __user *src
got unsigned short [usertype] *[addressable] variable_name
sparse: sparse: incorrect type in argument 2 (different address spaces) @@ expected unsigned short [noderef] [usertype] __user *src @@ got unsigned short [usertype] *[addressable] variable_name @@
expected unsigned short [noderef] [usertype] __user *src
got unsigned short [usertype] *[addressable] variable_name
sparse: sparse: incorrect type in initializer (different address spaces) @@ expected unsigned long const [noderef] __user *__pu_ptr @@ got unsigned long [usertype] *[addressable] status @@
expected unsigned long const [noderef] __user *__pu_ptr
got unsigned long [usertype] *[addressable] status
sparse: sparse: incorrect type in initializer (different address spaces) @@ expected unsigned long const [noderef] __user *__pu_ptr @@ got unsigned long *[addressable] variable_name_size @@
expected unsigned long const [noderef] __user *__pu_ptr
got unsigned long *[addressable] variable_name_size
sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected unsigned short [noderef] [usertype] __user *dst @@ got unsigned short [usertype] *[addressable] variable_name @@
expected unsigned short [noderef] [usertype] __user *dst
got unsigned short [usertype] *[addressable] variable_name
sparse: sparse: incorrect type in initializer (different address spaces) @@ expected unsigned long const [noderef] __user *__pu_ptr @@ got unsigned long *[addressable] variable_name_size @@
expected unsigned long const [noderef] __user *__pu_ptr
got unsigned long *[addressable] variable_name_size
sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void [noderef] __user *to @@ got struct guid_t [usertype] *[addressable] vendor_guid @@
expected void [noderef] __user *to
got struct guid_t [usertype] *[addressable] vendor_guid
sparse: sparse: incorrect type in initializer (different address spaces) @@ expected unsigned long const [noderef] __user *__pu_ptr @@ got unsigned long [usertype] *[addressable] status @@
expected unsigned long const [noderef] __user *__pu_ptr
got unsigned long [usertype] *[addressable] status
sparse: sparse: incorrect type in initializer (different address spaces) @@ expected unsigned int const [noderef] __user *__pu_ptr @@ got unsigned int [usertype] *[addressable] high_count @@
expected unsigned int const [noderef] __user *__pu_ptr
got unsigned int [usertype] *[addressable] high_count
sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void const [noderef] __user * @@ got void * @@
expected void const [noderef] __user *
got void *
sparse: sparse: incorrect type in initializer (different address spaces) @@ expected unsigned long const [noderef] __user *__pu_ptr @@ got unsigned long [usertype] *[addressable] status @@
expected unsigned long const [noderef] __user *__pu_ptr
got unsigned long [usertype] *[addressable] status
sparse: sparse: incorrect type in initializer (different address spaces) @@ expected unsigned long long const [noderef] __user *__pu_ptr @@ got unsigned long long [usertype] *[addressable] maximum_variable_storage_size @@
expected unsigned long long const [noderef] __user *__pu_ptr
got unsigned long long [usertype] *[addressable] maximum_variable_storage_size
sparse: sparse: incorrect type in initializer (different address spaces) @@ expected unsigned long long const [noderef] __user *__pu_ptr @@ got unsigned long long [usertype] *[addressable] remaining_variable_storage_size @@
expected unsigned long long const [noderef] __user *__pu_ptr
got unsigned long long [usertype] *[addressable] remaining_variable_storage_size
sparse: sparse: incorrect type in initializer (different address spaces) @@ expected unsigned long long const [noderef] __user *__pu_ptr @@ got unsigned long long [usertype] *[addressable] maximum_variable_size @@
expected unsigned long long const [noderef] __user *__pu_ptr
got unsigned long long [usertype] *[addressable] maximum_variable_size
sparse: sparse: incorrect type in initializer (different address spaces) @@ expected struct efi_capsule_header_t [usertype] *[noderef] __user *register __p @@ got struct efi_capsule_header_t [usertype] ** @@
expected struct efi_capsule_header_t [usertype] *[noderef] __user *register __p
got struct efi_capsule_header_t [usertype] **
sparse: sparse: incorrect type in argument 2 (different address spaces) @@ expected void const [noderef] __user *from @@ got struct efi_capsule_header_t [usertype] *[assigned] c @@
expected void const [noderef] __user *from
got struct efi_capsule_header_t [usertype] *[assigned] c
sparse: sparse: incorrect type in initializer (different address spaces) @@ expected unsigned long const [noderef] __user *__pu_ptr @@ got unsigned long [usertype] *[addressable] [assigned] status @@
expected unsigned long const [noderef] __user *__pu_ptr
got unsigned long [usertype] *[addressable] [assigned] status
sparse: sparse: incorrect type in initializer (different address spaces) @@ expected unsigned long long const [noderef] __user *__pu_ptr @@ got unsigned long long [usertype] *[addressable] [assigned] maximum_capsule_size @@
expected unsigned long long const [noderef] __user *__pu_ptr
got unsigned long long [usertype] *[addressable] [assigned] maximum_capsule_size
sparse: sparse: incorrect type in initializer (different address spaces) @@ expected int const [noderef] __user *__pu_ptr @@ got int *[addressable] [assigned] reset_type @@
expected int const [noderef] __user *__pu_ptr
got int *[addressable] [assigned] reset_type
sparse: sparse: incorrect type in initializer (different address spaces) @@ expected unsigned short [usertype] *s @@ got unsigned short [noderef] [usertype] __user *str @@
expected unsigned short [usertype] *s
got unsigned short [noderef] [usertype] __user *str
sparse: sparse: incorrect type in initializer (different address spaces) @@ expected unsigned short [noderef] __user *register __p @@ got unsigned short [usertype] * @@
expected unsigned short [noderef] __user *register __p
got unsigned short [usertype] *
sparse: sparse: incorrect type in initializer (different address spaces) @@ expected unsigned short [noderef] __user *register __p @@ got unsigned short [usertype] * @@
expected unsigned short [noderef] __user *register __p
got unsigned short [usertype] *
sparse: sparse: incorrect type in initializer (different address spaces) @@ expected unsigned short [usertype] *[assigned] s @@ got unsigned short [noderef] [usertype] __user *str @@
expected unsigned short [usertype] *[assigned] s
got unsigned short [noderef] [usertype] __user *str
sparse: sparse: incorrect type in initializer (different address spaces) @@ expected unsigned short [noderef] __user *register __p @@ got unsigned short [usertype] * @@
expected unsigned short [noderef] __user *register __p
got unsigned short [usertype] *
sparse: sparse: incorrect type in initializer (different address spaces) @@ expected unsigned short [noderef] __user *register __p @@ got unsigned short [usertype] * @@
expected unsigned short [noderef] __user *register __p
got unsigned short [usertype] *
sparse: sparse: incorrect type in initializer (different address spaces) @@ expected unsigned short [usertype] *[assigned] s @@ got unsigned short [noderef] [usertype] __user *str @@
expected unsigned short [usertype] *[assigned] s
got unsigned short [noderef] [usertype] __user *str
sparse: sparse: incorrect type in initializer (different address spaces) @@ expected unsigned short [noderef] __user *register __p @@ got unsigned short [usertype] * @@
expected unsigned short [noderef] __user *register __p
got unsigned short [usertype] *
sparse: sparse: incorrect type in initializer (different address spaces) @@ expected unsigned short [noderef] __user *register __p @@ got unsigned short [usertype] * @@
expected unsigned short [noderef] __user *register __p
got unsigned short [usertype] *
2009-03-19 909
910 static int pxafb_overlay_map_video_memory(struct pxafb_info *pxafb,
2011-03-11 911 struct pxafb_layer *ofb)
2011-03-11 912 {
2011-03-11 913 /* We assume that user will use at most video_mem_size for overlay fb,
2011-03-11 914 * anyway, it's useless to use 16bpp main plane and 24bpp overlay
2011-03-11 915 */
2011-03-11 @916 ofb->video_mem = alloc_pages_exact(PAGE_ALIGN(pxafb->video_mem_size),
2011-03-11 917 GFP_KERNEL | __GFP_ZERO);
2011-03-11 918 if (ofb->video_mem == NULL)
2011-03-11 919 return -ENOMEM;
2011-03-11 920
2011-03-11 @921 ofb->video_mem_phys = virt_to_phys(ofb->video_mem);
2011-03-11 922 ofb->video_mem_size = PAGE_ALIGN(pxafb->video_mem_size);
2011-03-11 923
2011-03-11 924 mutex_lock(&ofb->fb.mm_lock);
2011-03-11 925 ofb->fb.fix.smem_start = ofb->video_mem_phys;
2011-03-11 926 ofb->fb.fix.smem_len = pxafb->video_mem_size;
2011-03-11 927 mutex_unlock(&ofb->fb.mm_lock);
2011-03-11 928
2011-03-11 929 ofb->fb.screen_base = ofb->video_mem;
2011-03-11 930
2011-03-11 931 return 0;
2011-03-11 932 }
2011-03-11 933
934 static void pxafb_overlay_init(struct pxafb_info *fbi)
2008-12-23 935 {
2008-12-23 936 int i, ret;
2008-12-23 937
2009-03-19 938 if (!pxafb_overlay_supported())
2011-03-11 939 return;
2009-03-19 940
2008-12-23 941 for (i = 0; i < 2; i++) {
2011-03-11 942 struct pxafb_layer *ofb = &fbi->overlay[i];
2011-03-11 943 init_pxafb_overlay(fbi, ofb, i);
2011-03-11 944 ret = register_framebuffer(&ofb->fb);
2008-12-23 945 if (ret) {
2008-12-23 946 dev_err(fbi->dev, "failed to register overlay %d\n", i);
2011-03-11 947 continue;
2008-12-23 948 }
2011-03-11 949 ret = pxafb_overlay_map_video_memory(fbi, ofb);
2011-03-11 950 if (ret) {
2011-03-11 951 dev_err(fbi->dev,
2011-03-11 952 "failed to map video memory for overlay %d\n",
2011-03-11 953 i);
2011-03-11 954 unregister_framebuffer(&ofb->fb);
2011-03-11 955 continue;
2011-03-11 956 }
2011-03-11 957 ofb->registered = 1;
2008-12-23 958 }
2008-12-23 959
2008-12-23 960 /* mask all IU/BS/EOF/SOF interrupts */
2008-12-23 961 lcd_writel(fbi, LCCR5, ~0);
2008-12-23 962
2008-12-23 963 pr_info("PXA Overlay driver loaded successfully!\n");
2008-12-23 964 }
2008-12-23 965
966 static void pxafb_overlay_exit(struct pxafb_info *fbi)
2008-12-23 967 {
2008-12-23 968 int i;
2008-12-23 969
2009-03-19 970 if (!pxafb_overlay_supported())
2009-03-19 971 return;
2009-03-19 972
2011-03-11 973 for (i = 0; i < 2; i++) {
2011-03-11 974 struct pxafb_layer *ofb = &fbi->overlay[i];
2011-03-11 975 if (ofb->registered) {
2011-03-11 976 if (ofb->video_mem)
2011-03-11 @977 free_pages_exact(ofb->video_mem,
2011-03-11 978 ofb->video_mem_size);
2011-03-11 979 unregister_framebuffer(&ofb->fb);
2011-03-11 980 }
2011-03-11 981 }
2008-12-23 982 }
2008-12-23 983 #else
2008-12-23 984 static inline void pxafb_overlay_init(struct pxafb_info *fbi) {}
2008-12-23 985 static inline void pxafb_overlay_exit(struct pxafb_info *fbi) {}
2008-12-23 986 #endif /* CONFIG_FB_PXA_OVERLAY */
2008-12-23 987
by commit
ARM: pxafb: rework pxafb overlay memory management
protection#381e544c035956594a4b574d54785f55595154165b57551e5f4c03"><[email protected]>
on#193f756d227c6b707a37603774707876597e74787075377a76743f7e6d22"><[email protected]>
ll@lists.01.org">https://lists.01.org/hyperkitty/list/[email protected]

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2020-08-07 11:54:03

by Luc Van Oostenryck

[permalink] [raw]

Subject: Re: drivers/video/fbdev/pxafb.c:916:24: sparse: sparse: incorrect type in assignment (different address spaces)

On Fri, Aug 07, 2020 at 06:37:36PM +0800, kernel test robot wrote:
> tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
> head: 86cfccb66937dd6cbf26ed619958b9e587e6a115
> commit: 670d0a4b10704667765f7d18f7592993d02783aa sparse: use identifiers to define address spaces
> date: 7 weeks ago
> config: arm-randconfig-s031-20200807 (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: v0.6.2-118-ge1578773-dirty
> git checkout 670d0a4b10704667765f7d18f7592993d02783aa
> # 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 <[email protected]>
>
>
> sparse warnings: (new ones prefixed by >>)
>
> >> drivers/video/fbdev/pxafb.c:916:24: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected void [noderef] __iomem *video_mem @@ got void * @@
> >> drivers/video/fbdev/pxafb.c:916:24: sparse: expected void [noderef] __iomem *video_mem

Hi,

since late June I receive several mails per day about this commit but
they are all false-positive.
Commit 670d0a4b10704667765f7d18f7592993d02783aa can't introduce *new*
warnings, it only change how address-spaces are displayed in sparse's
warnings (for example, the address space for __user pointers were
displayd as '<asn:1>', now it's nicely displayed as '__user', same
for '__iomem', '__percpu' and '__rcu').

Isn't it possible to ignore some commits like this one?
Or, even better, should it be possible to only report when a new
warning is effectively added, not when its content is simply modified?
If not it would be nice to be able to see the difference in a diff-like
format.

Best regards,
-- Luc

2020-08-10 02:52:27

by Chen, Rong A

[permalink] [raw]

Subject: Re: [kbuild-all] Re: drivers/video/fbdev/pxafb.c:916:24: sparse: sparse: incorrect type in assignment (different address spaces)

On 8/7/20 7:53 PM, Luc Van Oostenryck wrote:
> On Fri, Aug 07, 2020 at 06:37:36PM +0800, kernel test robot wrote:
>> tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
>> head: 86cfccb66937dd6cbf26ed619958b9e587e6a115
>> commit: 670d0a4b10704667765f7d18f7592993d02783aa sparse: use identifiers to define address spaces
>> date: 7 weeks ago
>> config: arm-randconfig-s031-20200807 (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: v0.6.2-118-ge1578773-dirty
>> git checkout 670d0a4b10704667765f7d18f7592993d02783aa
>> # 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 <[email protected]>
>>
>>
>> sparse warnings: (new ones prefixed by >>)
>>
>>>> drivers/video/fbdev/pxafb.c:916:24: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected void [noderef] __iomem *video_mem @@ got void * @@
>>>> drivers/video/fbdev/pxafb.c:916:24: sparse: expected void [noderef] __iomem *video_mem
> Hi,
>
> since late June I receive several mails per day about this commit but
> they are all false-positive.
> Commit 670d0a4b10704667765f7d18f7592993d02783aa can't introduce *new*
> warnings, it only change how address-spaces are displayed in sparse's
> warnings (for example, the address space for __user pointers were
> displayd as '<asn:1>', now it's nicely displayed as '__user', same
> for '__iomem', '__percpu' and '__rcu').
>
> Isn't it possible to ignore some commits like this one?

Hi Luc,

Sorry for the inconvenience, we'll ignore this commit firstly.

> Or, even better, should it be possible to only report when a new
> warning is effectively added, not when its content is simply modified?
> If not it would be nice to be able to see the difference in a diff-like
> format.
Thanks for your advice, we'll seriously consider it.

Best Regards,
Rong Chen