* [PATCH] issei: Fix size_t printk specifier in heci_{write,read}_buf()
@ 2026-07-21 21:32 Nathan Chancellor
2026-07-22 5:57 ` Usyskin, Alexander
0 siblings, 1 reply; 3+ messages in thread
From: Nathan Chancellor @ 2026-07-21 21:32 UTC (permalink / raw)
To: Alexander Usyskin, Arnd Bergmann, Greg Kroah-Hartman
Cc: Karol Wachowski, Vitaly Lubart, linux-kernel, Nathan Chancellor
When building for 32-bit platforms, for which 'size_t' is
'unsigned int', there are a couple of warnings around incorrect printk
specifiers:
In file included from drivers/misc/issei/hw_heci.c:7:
drivers/misc/issei/hw_heci.c: In function 'heci_write_hbuf':
drivers/misc/issei/hw_heci.c:374:37: error: format '%lu' expects argument of type 'long unsigned int', but argument 4 has type 'unsigned int' [-Werror=format=]
374 | dev_err(&idev->dev, "Data size %zu not aligned to slot size %lu\n",
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
...
drivers/misc/issei/hw_heci.c:374:79: note: format string is defined here
374 | dev_err(&idev->dev, "Data size %zu not aligned to slot size %lu\n",
| ~~^
| |
| long unsigned int
| %u
drivers/misc/issei/hw_heci.c: In function 'heci_read_hbuf':
drivers/misc/issei/hw_heci.c:404:37: error: format '%lu' expects argument of type 'long unsigned int', but argument 4 has type 'unsigned int' [-Werror=format=]
404 | dev_err(&idev->dev, "Data size %zu not aligned to slot size %lu\n",
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
...
drivers/misc/issei/hw_heci.c:404:79: note: format string is defined here
404 | dev_err(&idev->dev, "Data size %zu not aligned to slot size %lu\n",
| ~~^
| |
| long unsigned int
| %u
cc1: all warnings being treated as errors
Use '%zu' for printing these values, the proper printk specifier for
'size_t'.
Fixes: 8bf5e84998c3 ("issei: add heci hardware module")
Signed-off-by: Nathan Chancellor <nathan@kernel.org>
---
drivers/misc/issei/hw_heci.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/misc/issei/hw_heci.c b/drivers/misc/issei/hw_heci.c
index 35c55de5c67a..501774aa95ff 100644
--- a/drivers/misc/issei/hw_heci.c
+++ b/drivers/misc/issei/hw_heci.c
@@ -371,7 +371,7 @@ static int heci_write_hbuf(struct issei_device *idev, const void *data, size_t d
struct issei_heci_hw *hw = to_heci_hw(idev);
if (!IS_ALIGNED(data_len, CB_SLOT_SIZE)) {
- dev_err(&idev->dev, "Data size %zu not aligned to slot size %lu\n",
+ dev_err(&idev->dev, "Data size %zu not aligned to slot size %zu\n",
data_len, CB_SLOT_SIZE);
return -EINVAL;
}
@@ -401,7 +401,7 @@ static int heci_read_hbuf(struct issei_device *idev, void *data, size_t data_len
u32 *reg_buf = data;
if (!IS_ALIGNED(data_len, CB_SLOT_SIZE)) {
- dev_err(&idev->dev, "Data size %zu not aligned to slot size %lu\n",
+ dev_err(&idev->dev, "Data size %zu not aligned to slot size %zu\n",
data_len, CB_SLOT_SIZE);
return -EINVAL;
}
---
base-commit: 2cedf2272f1bb42471e646868ac572cc5752bd91
change-id: 20260721-issei-fix-size_t-specifier-0ec57b79ee45
Best regards,
--
Cheers,
Nathan
^ permalink raw reply related [flat|nested] 3+ messages in thread* RE: [PATCH] issei: Fix size_t printk specifier in heci_{write,read}_buf()
2026-07-21 21:32 [PATCH] issei: Fix size_t printk specifier in heci_{write,read}_buf() Nathan Chancellor
@ 2026-07-22 5:57 ` Usyskin, Alexander
2026-07-22 18:53 ` Nathan Chancellor
0 siblings, 1 reply; 3+ messages in thread
From: Usyskin, Alexander @ 2026-07-22 5:57 UTC (permalink / raw)
To: Nathan Chancellor, Arnd Bergmann, Greg Kroah-Hartman
Cc: Karol Wachowski, Vitaly Lubart, linux-kernel@vger.kernel.org
> Subject: [PATCH] issei: Fix size_t printk specifier in heci_{write,read}_buf()
>
> When building for 32-bit platforms, for which 'size_t' is
> 'unsigned int', there are a couple of warnings around incorrect printk
> specifiers:
>
> In file included from drivers/misc/issei/hw_heci.c:7:
> drivers/misc/issei/hw_heci.c: In function 'heci_write_hbuf':
> drivers/misc/issei/hw_heci.c:374:37: error: format '%lu' expects argument of
> type 'long unsigned int', but argument 4 has type 'unsigned int' [-
> Werror=format=]
> 374 | dev_err(&idev->dev, "Data size %zu not aligned to slot size
> %lu\n",
> | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> ...
> drivers/misc/issei/hw_heci.c:374:79: note: format string is defined here
> 374 | dev_err(&idev->dev, "Data size %zu not aligned to slot size
> %lu\n",
> | ~~^
> | |
> | long unsigned int
> | %u
> drivers/misc/issei/hw_heci.c: In function 'heci_read_hbuf':
> drivers/misc/issei/hw_heci.c:404:37: error: format '%lu' expects argument of
> type 'long unsigned int', but argument 4 has type 'unsigned int' [-
> Werror=format=]
> 404 | dev_err(&idev->dev, "Data size %zu not aligned to slot size
> %lu\n",
> | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> ...
> drivers/misc/issei/hw_heci.c:404:79: note: format string is defined here
> 404 | dev_err(&idev->dev, "Data size %zu not aligned to slot size
> %lu\n",
> | ~~^
> | |
> | long unsigned int
> | %u
> cc1: all warnings being treated as errors
>
> Use '%zu' for printing these values, the proper printk specifier for
> 'size_t'.
>
Thanks for a fix!
Interesting, which checker should catch such errors?
Acked-by: Alexander Usyskin <alexander.usyskin@intel.com>
> Fixes: 8bf5e84998c3 ("issei: add heci hardware module")
> Signed-off-by: Nathan Chancellor <nathan@kernel.org>
> ---
> drivers/misc/issei/hw_heci.c | 4 ++--
> 1 file changed, 2 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/misc/issei/hw_heci.c b/drivers/misc/issei/hw_heci.c
> index 35c55de5c67a..501774aa95ff 100644
> --- a/drivers/misc/issei/hw_heci.c
> +++ b/drivers/misc/issei/hw_heci.c
> @@ -371,7 +371,7 @@ static int heci_write_hbuf(struct issei_device *idev,
> const void *data, size_t d
> struct issei_heci_hw *hw = to_heci_hw(idev);
>
> if (!IS_ALIGNED(data_len, CB_SLOT_SIZE)) {
> - dev_err(&idev->dev, "Data size %zu not aligned to slot size
> %lu\n",
> + dev_err(&idev->dev, "Data size %zu not aligned to slot size
> %zu\n",
> data_len, CB_SLOT_SIZE);
> return -EINVAL;
> }
> @@ -401,7 +401,7 @@ static int heci_read_hbuf(struct issei_device *idev,
> void *data, size_t data_len
> u32 *reg_buf = data;
>
> if (!IS_ALIGNED(data_len, CB_SLOT_SIZE)) {
> - dev_err(&idev->dev, "Data size %zu not aligned to slot size
> %lu\n",
> + dev_err(&idev->dev, "Data size %zu not aligned to slot size
> %zu\n",
> data_len, CB_SLOT_SIZE);
> return -EINVAL;
> }
>
> ---
> base-commit: 2cedf2272f1bb42471e646868ac572cc5752bd91
> change-id: 20260721-issei-fix-size_t-specifier-0ec57b79ee45
>
> Best regards,
> --
> Cheers,
> Nathan
^ permalink raw reply [flat|nested] 3+ messages in thread* Re: [PATCH] issei: Fix size_t printk specifier in heci_{write,read}_buf()
2026-07-22 5:57 ` Usyskin, Alexander
@ 2026-07-22 18:53 ` Nathan Chancellor
0 siblings, 0 replies; 3+ messages in thread
From: Nathan Chancellor @ 2026-07-22 18:53 UTC (permalink / raw)
To: Usyskin, Alexander
Cc: Arnd Bergmann, Greg Kroah-Hartman, Karol Wachowski, Vitaly Lubart,
linux-kernel@vger.kernel.org
On Wed, Jul 22, 2026 at 05:57:53AM +0000, Usyskin, Alexander wrote:
> > Subject: [PATCH] issei: Fix size_t printk specifier in heci_{write,read}_buf()
> >
> > When building for 32-bit platforms, for which 'size_t' is
> > 'unsigned int', there are a couple of warnings around incorrect printk
> > specifiers:
> >
> > In file included from drivers/misc/issei/hw_heci.c:7:
> > drivers/misc/issei/hw_heci.c: In function 'heci_write_hbuf':
> > drivers/misc/issei/hw_heci.c:374:37: error: format '%lu' expects argument of
> > type 'long unsigned int', but argument 4 has type 'unsigned int' [-
> > Werror=format=]
> > 374 | dev_err(&idev->dev, "Data size %zu not aligned to slot size
> > %lu\n",
> > | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> > ...
> > drivers/misc/issei/hw_heci.c:374:79: note: format string is defined here
> > 374 | dev_err(&idev->dev, "Data size %zu not aligned to slot size
> > %lu\n",
> > | ~~^
> > | |
> > | long unsigned int
> > | %u
> > drivers/misc/issei/hw_heci.c: In function 'heci_read_hbuf':
> > drivers/misc/issei/hw_heci.c:404:37: error: format '%lu' expects argument of
> > type 'long unsigned int', but argument 4 has type 'unsigned int' [-
> > Werror=format=]
> > 404 | dev_err(&idev->dev, "Data size %zu not aligned to slot size
> > %lu\n",
> > | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> > ...
> > drivers/misc/issei/hw_heci.c:404:79: note: format string is defined here
> > 404 | dev_err(&idev->dev, "Data size %zu not aligned to slot size
> > %lu\n",
> > | ~~^
> > | |
> > | long unsigned int
> > | %u
> > cc1: all warnings being treated as errors
> >
> > Use '%zu' for printing these values, the proper printk specifier for
> > 'size_t'.
> >
>
> Thanks for a fix!
> Interesting, which checker should catch such errors?
I saw this with both Clang and GCC when building ARCH=i386 allmodconfig.
> Acked-by: Alexander Usyskin <alexander.usyskin@intel.com>
Thanks for the quick response!
--
Cheers,
Nathan
^ permalink raw reply [flat|nested] 3+ messages in thread
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2026-07-21 21:32 [PATCH] issei: Fix size_t printk specifier in heci_{write,read}_buf() Nathan Chancellor
2026-07-22 5:57 ` Usyskin, Alexander
2026-07-22 18:53 ` Nathan Chancellor
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