On Wed, Mar 16, 2022 at 02:31:18PM -0700, Bill Wendling wrote:
> When compiling with -Wformat, clang emits the following warnings:
>
> drivers/soc/qcom/smem.c:847:41: warning: format specifies type 'unsigned
> short' but the argument has type 'unsigned int' [-Wformat]
> dev_err(smem->dev, "bad host %hu\n", remote_host);
> ~~~ ^~~~~~~~~~~
> %u
> ./include/linux/dev_printk.h:144:65: note: expanded from macro 'dev_err'
> dev_printk_index_wrap(_dev_err, KERN_ERR, dev, dev_fmt(fmt), ##__VA_ARGS__)
> ~~~ ^~~~~~~~~~~
> ./include/linux/dev_printk.h:110:23: note: expanded from macro 'dev_printk_index_wrap'
> _p_func(dev, fmt, ##__VA_ARGS__); \
> ~~~ ^~~~~~~~~~~
> drivers/soc/qcom/smem.c:852:47: warning: format specifies type 'unsigned
> short' but the argument has type 'unsigned int' [-Wformat]
> dev_err(smem->dev, "duplicate host %hu\n", remote_host);
> ~~~ ^~~~~~~~~~~
> %u
> ./include/linux/dev_printk.h:144:65: note: expanded from macro 'dev_err'
> dev_printk_index_wrap(_dev_err, KERN_ERR, dev, dev_fmt(fmt), ##__VA_ARGS__)
> ~~~ ^~~~~~~~~~~
> ./include/linux/dev_printk.h:110:23: note: expanded from macro 'dev_printk_index_wrap'
> _p_func(dev, fmt, ##__VA_ARGS__); \
> ~~~ ^~~~~~~~~~~
>
> The types of these arguments are unconditionally defined, so this patch
> updates the format character to the correct ones for ints and unsigned
> ints.
Right. Alternatively, remote_host could be turned into a u16 to match
host0 and host1, as those are the only values that will ever be assigned
to it, which should have been done in commit 13a920ae7898 ("soc: qcom:
smem: a few last cleanups") to avoid introducing this warning in the
first place.
Probably does not matter though, unless the maintainers feel that is a
better fix.
> Link: ClangBuiltLinux/linux#378
Link: https://github.com/ClangBuiltLinux/linux/issues/378
as discussed on other patches :)
> Signed-off-by: Bill Wendling <morbo@xxxxxxxxxx>
Reviewed-by: Nathan Chancellor <nathan@xxxxxxxxxx>
> ---
> drivers/soc/qcom/smem.c | 4 ++--
> 1 file changed, 2 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/soc/qcom/smem.c b/drivers/soc/qcom/smem.c
> index e2057d8f1eff..a98b5f395d15 100644
> --- a/drivers/soc/qcom/smem.c
> +++ b/drivers/soc/qcom/smem.c
> @@ -844,12 +844,12 @@ qcom_smem_enumerate_partitions(struct qcom_smem *smem, u16 local_host)
> continue;
>
> if (remote_host >= SMEM_HOST_COUNT) {
> - dev_err(smem->dev, "bad host %hu\n", remote_host);
> + dev_err(smem->dev, "bad host %u\n", remote_host);
> return -EINVAL;
> }
>
> if (smem->partitions[remote_host]) {
> - dev_err(smem->dev, "duplicate host %hu\n", remote_host);
> + dev_err(smem->dev, "duplicate host %u\n", remote_host);
> return -EINVAL;
> }
>
> --
> 2.35.1.723.g4982287a31-goog
>
>
