Hi Greg,
Thanks for reviewing.
On Tue, Jan 30, 2024 at 06:04:17AM -0800, Greg KH wrote:
> On Tue, Jan 30, 2024 at 12:06:32PM +0800, Dawei Li wrote:
> > For data structures needs cpu_to_le* conversion, its prototype needs to
> > be declared with __le* explicitly.
> >
> > Fixes: cfad6425382e ("eeprom: Add IDT 89HPESx EEPROM/CSR driver")
> > Reported-by: kernel test robot <lkp@xxxxxxxxx>
> > Closes: https://lore.kernel.org/oe-kbuild-all/202401261250.b07Yt30Z-lkp@xxxxxxxxx/
> > Signed-off-by: Dawei Li <dawei.li@xxxxxxxxxxxx>
> > Cc: <stable@xxxxxxxxxxxxxxx>
> > ---
> > drivers/misc/eeprom/idt_89hpesx.c | 6 +++---
> > 1 file changed, 3 insertions(+), 3 deletions(-)
> >
> > diff --git a/drivers/misc/eeprom/idt_89hpesx.c b/drivers/misc/eeprom/idt_89hpesx.c
> > index d807d08e2614..327afb866b21 100644
> > --- a/drivers/misc/eeprom/idt_89hpesx.c
> > +++ b/drivers/misc/eeprom/idt_89hpesx.c
> > @@ -129,7 +129,7 @@ struct idt_smb_seq {
> > struct idt_eeprom_seq {
> > u8 cmd;
> > u8 eeaddr;
> > - u16 memaddr;
> > + __le16 memaddr;
> > u8 data;
> > } __packed;
> >
> > @@ -141,8 +141,8 @@ struct idt_eeprom_seq {
> > */
> > struct idt_csr_seq {
> > u8 cmd;
> > - u16 csraddr;
> > - u32 data;
> > + __le16 csraddr;
> > + __le32 data;
> > } __packed;
> >
> > /*
>
> Declaring them this way is nice, but this doesn't actually "fix"
> anything at all as no code is actually changed.
>
> So how is ths a bugfix? How does this patch do anything?
>
> confused,
Sorry for the confuson.
This commit is to address the issue reported by kernel test rebot[1].
Partially quoted from it:
sparse warnings: (new ones prefixed by >>)
>> drivers/misc/eeprom/idt_89hpesx.c:599:31: sparse: sparse: incorrect type in assignment (different base types) @@ expected unsigned short [addressable] [assigned] [usertype] memaddr @@ got restricted __le16 [usertype] @@
drivers/misc/eeprom/idt_89hpesx.c:599:31: sparse: expected unsigned short [addressable] [assigned] [usertype] memaddr
drivers/misc/eeprom/idt_89hpesx.c:599:31: sparse: got restricted __le16 [usertype]
drivers/misc/eeprom/idt_89hpesx.c:671:31: sparse: sparse: incorrect type in assignment (different base types) @@ expected unsigned short [addressable] [assigned] [usertype] memaddr @@ got restricted __le16 [usertype] @@
drivers/misc/eeprom/idt_89hpesx.c:671:31: sparse: expected unsigned short [addressable] [assigned] [usertype] memaddr
drivers/misc/eeprom/idt_89hpesx.c:671:31: sparse: got restricted __le16 [usertype]
>> drivers/misc/eeprom/idt_89hpesx.c:769:24: sparse: sparse: incorrect type in assignment (different base types) @@ expected unsigned short [addressable] [assigned] [usertype] csraddr @@ got restricted __le16 [usertype] @@
drivers/misc/eeprom/idt_89hpesx.c:769:24: sparse: expected unsigned short [addressable] [assigned] [usertype] csraddr
drivers/misc/eeprom/idt_89hpesx.c:769:24: sparse: got restricted __le16 [usertype]
>> drivers/misc/eeprom/idt_89hpesx.c:770:21: sparse: sparse: incorrect type in assignment (different base types) @@ expected unsigned int [addressable] [assigned] [usertype] data @@ got restricted __le32 [usertype] @@
drivers/misc/eeprom/idt_89hpesx.c:770:21: sparse: expected unsigned int [addressable] [assigned] [usertype] data
drivers/misc/eeprom/idt_89hpesx.c:770:21: sparse: got restricted __le32 [usertype]
drivers/misc/eeprom/idt_89hpesx.c:834:24: sparse: sparse: incorrect type in assignment (different base types) @@ expected unsigned short [addressable] [assigned] [usertype] csraddr @@ got restricted __le16 [usertype] @@
drivers/misc/eeprom/idt_89hpesx.c:834:24: sparse: expected unsigned short [addressable] [assigned] [usertype] csraddr
drivers/misc/eeprom/idt_89hpesx.c:834:24: sparse: got restricted __le16 [usertype]
>> drivers/misc/eeprom/idt_89hpesx.c:859:17: sparse: sparse: cast to restricted __le32
>> drivers/misc/eeprom/idt_89hpesx.c:859:17: sparse: sparse: cast to restricted __le32
>> drivers/misc/eeprom/idt_89hpesx.c:859:17: sparse: sparse: cast to restricted __le32
>> drivers/misc/eeprom/idt_89hpesx.c:859:17: sparse: sparse: cast to restricted __le32
>> drivers/misc/eeprom/idt_89hpesx.c:859:17: sparse: sparse: cast to restricted __le32
>> drivers/misc/eeprom/idt_89hpesx.c:859:17: sparse: sparse: cast to restricted __le32
[1] https://lore.kernel.org/oe-kbuild-all/202401261250.b07Yt30Z-lkp@xxxxxxxxx/
Thanks,
Dawei
>
> greg k-h
>
