From: Mauro Carvalho Chehab
> Sent: 23 September 2020 09:22
>
> Depending on the gcc version, after changeset
> 72a9ff3bf7fb ("media: atomisp: get rid of -Wsuggest-attribute=format warnings"),
> we're now getting two warnings, which are breaking the Jenkins
> CI instance at https://builder.linuxtv.org:
>
> ../drivers/staging/media/atomisp/pci/atomisp_compat_css20.c: In function ‘__set_css_print_env’:
> ../drivers/staging/media/atomisp/pci/atomisp_compat_css20.c:860:50: error: assignment to ‘int
> (*)(const char *, char *)’ from incompatible pointer type ‘int (__attribute__((regparm(0))) *)(const
> char *, char *)’ [-Werror=incompatible-pointer-types]
> isp->css_env.isp_css_env.print_env.debug_print = vprintk;
> ^
> ../drivers/staging/media/atomisp/pci/atomisp_compat_css20.c: In function
> ‘atomisp_css_load_firmware’:
> ../drivers/staging/media/atomisp/pci/atomisp_compat_css20.c:893:49: error: assignment to ‘int
> (*)(const char *, char *)’ from incompatible pointer type ‘int (__attribute__((regparm(0))) *)(const
> char *, char *)’ [-Werror=incompatible-pointer-types]
> isp->css_env.isp_css_env.print_env.error_print = vprintk;
> ^
> cc1: some warnings being treated as errors
>
> So, we need to partially revert the patch.
That looks like completely the wrong commit message.
>From the error message it looks like vprintk() is using a non-standard
calling convention '__attribute__((regparm(0)))' so can't be assigned
to 'debug_print' - which expects the normal convention.
The fix is correct though.
David
>
> Fixes: 72a9ff3bf7fb ("media: atomisp: get rid of -Wsuggest-attribute=format warnings")
> Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@xxxxxxxxxx>
> ---
> .../staging/media/atomisp/pci/atomisp_compat_css20.c | 11 +++++++++--
> 1 file changed, 9 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/staging/media/atomisp/pci/atomisp_compat_css20.c
> b/drivers/staging/media/atomisp/pci/atomisp_compat_css20.c
> index 28796ec177e3..85b39de7bc28 100644
> --- a/drivers/staging/media/atomisp/pci/atomisp_compat_css20.c
> +++ b/drivers/staging/media/atomisp/pci/atomisp_compat_css20.c
> @@ -166,6 +166,13 @@ atomisp_css2_dbg_ftrace_print(const char *fmt, va_list args)
> return 0;
> }
>
> +static int __attribute__((format (printf, 1, 0)))
> +atomisp_vprintk(const char *fmt, va_list args)
> +{
> + vprintk(fmt, args);
> + return 0;
> +}
> +
> void atomisp_load_uint32(hrt_address addr, uint32_t *data)
> {
> *data = atomisp_css2_hw_load_32(addr);
> @@ -857,7 +864,7 @@ static inline int __set_css_print_env(struct atomisp_device *isp, int opt)
> isp->css_env.isp_css_env.print_env.debug_print =
> atomisp_css2_dbg_ftrace_print;
> else if (opt == 2)
> - isp->css_env.isp_css_env.print_env.debug_print = vprintk;
> + isp->css_env.isp_css_env.print_env.debug_print = atomisp_vprintk;
> else
> ret = -EINVAL;
>
> @@ -890,7 +897,7 @@ int atomisp_css_load_firmware(struct atomisp_device *isp)
>
> __set_css_print_env(isp, dbg_func);
>
> - isp->css_env.isp_css_env.print_env.error_print = vprintk;
> + isp->css_env.isp_css_env.print_env.error_print = atomisp_vprintk;
>
> /* load isp fw into ISP memory */
> err = ia_css_load_firmware(isp->dev, &isp->css_env.isp_css_env,
> --
> 2.26.2
-
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