kernel test robot reports a compile warning about REG_OFFSET redefined
in the reset-intel-gw.c after merging commit e44ab4e14d6f4 ("regmap:
Simplify implementation of the regmap_read_poll_timeout() macro"). the
warning is like that:
drivers/reset/reset-intel-gw.c:18:0: warning: "REG_OFFSET" redefined
#define REG_OFFSET GENMASK(31, 16)
In file included from ./arch/arm/mach-ixp4xx/include/mach/hardware.h:30:0,
from ./arch/arm/mach-ixp4xx/include/mach/io.h:15,
from ./arch/arm/include/asm/io.h:198,
from ./include/linux/io.h:13,
from ./include/linux/iopoll.h:14,
from ./include/linux/regmap.h:20,
from drivers/reset/reset-intel-gw.c:12:
./arch/arm/mach-ixp4xx/include/mach/platform.h:25:0: note: this is the location of the previous definition
#define REG_OFFSET 3
Reported-by: kernel test robot <[email protected]>
Fixes: e44ab4e14d6f4 ("regmap: Simplify implementation of the regmap_read_poll_timeout() macro")
Signed-off-by: Dejin Zheng <[email protected]>
---
drivers/reset/reset-intel-gw.c | 8 ++++----
1 file changed, 4 insertions(+), 4 deletions(-)
diff --git a/drivers/reset/reset-intel-gw.c b/drivers/reset/reset-intel-gw.c
index 854238444616..5cfb4892b399 100644
--- a/drivers/reset/reset-intel-gw.c
+++ b/drivers/reset/reset-intel-gw.c
@@ -15,7 +15,7 @@
#define RCU_RST_STAT 0x0024
#define RCU_RST_REQ 0x0048
-#define REG_OFFSET GENMASK(31, 16)
+#define REG_OFFSET_MASK GENMASK(31, 16)
#define BIT_OFFSET GENMASK(15, 8)
#define STAT_BIT_OFFSET GENMASK(7, 0)
@@ -51,7 +51,7 @@ static u32 id_to_reg_and_bit_offsets(struct intel_reset_data *data,
unsigned long id, u32 *rst_req,
u32 *req_bit, u32 *stat_bit)
{
- *rst_req = FIELD_GET(REG_OFFSET, id);
+ *rst_req = FIELD_GET(REG_OFFSET_MASK, id);
*req_bit = FIELD_GET(BIT_OFFSET, id);
if (data->soc_data->legacy)
@@ -141,7 +141,7 @@ static int intel_reset_xlate(struct reset_controller_dev *rcdev,
if (spec->args[1] > 31)
return -EINVAL;
- id = FIELD_PREP(REG_OFFSET, spec->args[0]);
+ id = FIELD_PREP(REG_OFFSET_MASK, spec->args[0]);
id |= FIELD_PREP(BIT_OFFSET, spec->args[1]);
if (data->soc_data->legacy) {
@@ -210,7 +210,7 @@ static int intel_reset_probe(struct platform_device *pdev)
if (ret)
return ret;
- data->reboot_id = FIELD_PREP(REG_OFFSET, rb_id[0]);
+ data->reboot_id = FIELD_PREP(REG_OFFSET_MASK, rb_id[0]);
data->reboot_id |= FIELD_PREP(BIT_OFFSET, rb_id[1]);
if (data->soc_data->legacy)
--
2.25.0
Hi Dejin,
On Thu, 2020-06-04 at 23:30 +0800, Dejin Zheng wrote:
> kernel test robot reports a compile warning about REG_OFFSET redefined
> in the reset-intel-gw.c after merging commit e44ab4e14d6f4 ("regmap:
> Simplify implementation of the regmap_read_poll_timeout() macro"). the
> warning is like that:
>
> drivers/reset/reset-intel-gw.c:18:0: warning: "REG_OFFSET" redefined
> #define REG_OFFSET GENMASK(31, 16)
>
> In file included from ./arch/arm/mach-ixp4xx/include/mach/hardware.h:30:0,
> from ./arch/arm/mach-ixp4xx/include/mach/io.h:15,
> from ./arch/arm/include/asm/io.h:198,
> from ./include/linux/io.h:13,
> from ./include/linux/iopoll.h:14,
> from ./include/linux/regmap.h:20,
> from drivers/reset/reset-intel-gw.c:12:
> ./arch/arm/mach-ixp4xx/include/mach/platform.h:25:0: note: this is the location of the previous definition
> #define REG_OFFSET 3
>
> Reported-by: kernel test robot <[email protected]>
> Fixes: e44ab4e14d6f4 ("regmap: Simplify implementation of the regmap_read_poll_timeout() macro")
Hm, shouldn't this rather be:
Fixes: c9aef213e38c ("reset: intel: Add system reset controller driver")
even though e44ab4e14d6f4 triggered the issue by including iopoll.h?
> Signed-off-by: Dejin Zheng <[email protected]>
> ---
> drivers/reset/reset-intel-gw.c | 8 ++++----
> 1 file changed, 4 insertions(+), 4 deletions(-)
>
> diff --git a/drivers/reset/reset-intel-gw.c b/drivers/reset/reset-intel-gw.c
> index 854238444616..5cfb4892b399 100644
> --- a/drivers/reset/reset-intel-gw.c
> +++ b/drivers/reset/reset-intel-gw.c
> @@ -15,7 +15,7 @@
> #define RCU_RST_STAT 0x0024
> #define RCU_RST_REQ 0x0048
>
> -#define REG_OFFSET GENMASK(31, 16)
> +#define REG_OFFSET_MASK GENMASK(31, 16)
> #define BIT_OFFSET GENMASK(15, 8)
> #define STAT_BIT_OFFSET GENMASK(7, 0)
Could you add the _MASK suffix to BIT_OFFSET and STAT_BIT_OFFSET as
well, for consistency?
regards
Philipp
On Fri, Jun 26, 2020 at 12:38:13PM +0200, Philipp Zabel wrote:
Hi Philipp:
Thanks very much for your review!
> Hi Dejin,
>
> On Thu, 2020-06-04 at 23:30 +0800, Dejin Zheng wrote:
> > kernel test robot reports a compile warning about REG_OFFSET redefined
> > in the reset-intel-gw.c after merging commit e44ab4e14d6f4 ("regmap:
> > Simplify implementation of the regmap_read_poll_timeout() macro"). the
> > warning is like that:
> >
> > drivers/reset/reset-intel-gw.c:18:0: warning: "REG_OFFSET" redefined
> > #define REG_OFFSET GENMASK(31, 16)
> >
> > In file included from ./arch/arm/mach-ixp4xx/include/mach/hardware.h:30:0,
> > from ./arch/arm/mach-ixp4xx/include/mach/io.h:15,
> > from ./arch/arm/include/asm/io.h:198,
> > from ./include/linux/io.h:13,
> > from ./include/linux/iopoll.h:14,
> > from ./include/linux/regmap.h:20,
> > from drivers/reset/reset-intel-gw.c:12:
> > ./arch/arm/mach-ixp4xx/include/mach/platform.h:25:0: note: this is the location of the previous definition
> > #define REG_OFFSET 3
> >
> > Reported-by: kernel test robot <[email protected]>
> > Fixes: e44ab4e14d6f4 ("regmap: Simplify implementation of the regmap_read_poll_timeout() macro")
>
> Hm, shouldn't this rather be:
>
> Fixes: c9aef213e38c ("reset: intel: Add system reset controller driver")
>
> even though e44ab4e14d6f4 triggered the issue by including iopoll.h?
>
Ok.
> > Signed-off-by: Dejin Zheng <[email protected]>
> > ---
> > drivers/reset/reset-intel-gw.c | 8 ++++----
> > 1 file changed, 4 insertions(+), 4 deletions(-)
> >
> > diff --git a/drivers/reset/reset-intel-gw.c b/drivers/reset/reset-intel-gw.c
> > index 854238444616..5cfb4892b399 100644
> > --- a/drivers/reset/reset-intel-gw.c
> > +++ b/drivers/reset/reset-intel-gw.c
> > @@ -15,7 +15,7 @@
> > #define RCU_RST_STAT 0x0024
> > #define RCU_RST_REQ 0x0048
> >
> > -#define REG_OFFSET GENMASK(31, 16)
> > +#define REG_OFFSET_MASK GENMASK(31, 16)
> > #define BIT_OFFSET GENMASK(15, 8)
> > #define STAT_BIT_OFFSET GENMASK(7, 0)
>
> Could you add the _MASK suffix to BIT_OFFSET and STAT_BIT_OFFSET as
> well, for consistency?
>
I will add it in next patch version. Thanks!
BR,
Dejin
> regards
> Philipp