Clang warns:
drivers/cpufreq/acpi-cpufreq.c:970:24: error: variable 'ret' is uninitialized when used here [-Werror,-Wuninitialized]
acpi_cpufreq_online = ret;
^~~
drivers/cpufreq/acpi-cpufreq.c:960:9: note: initialize the variable 'ret' to silence this warning
int ret;
^
= 0
1 error generated.
Both ret and acpi_cpufreq_online are now unused so they can be safely
removed, clearing up the warning.
Fixes: 13fdbc8b8da6 ("cpufreq: ACPI: Defer setting boost MSRs")
Link: https://github.com/ClangBuiltLinux/linux/issues/1757
Signed-off-by: Nathan Chancellor <[email protected]>
---
drivers/cpufreq/acpi-cpufreq.c | 6 ------
1 file changed, 6 deletions(-)
diff --git a/drivers/cpufreq/acpi-cpufreq.c b/drivers/cpufreq/acpi-cpufreq.c
index c8fdfcf659e6..74ef0e05ff7b 100644
--- a/drivers/cpufreq/acpi-cpufreq.c
+++ b/drivers/cpufreq/acpi-cpufreq.c
@@ -953,12 +953,8 @@ static struct cpufreq_driver acpi_cpufreq_driver = {
.attr = acpi_cpufreq_attr,
};
-static enum cpuhp_state acpi_cpufreq_online;
-
static void __init acpi_cpufreq_boost_init(void)
{
- int ret;
-
if (!(boot_cpu_has(X86_FEATURE_CPB) || boot_cpu_has(X86_FEATURE_IDA))) {
pr_debug("Boost capabilities not present in the processor\n");
return;
@@ -966,8 +962,6 @@ static void __init acpi_cpufreq_boost_init(void)
acpi_cpufreq_driver.set_boost = set_boost;
acpi_cpufreq_driver.boost_enabled = boost_state(0);
-
- acpi_cpufreq_online = ret;
}
static int __init acpi_cpufreq_init(void)
base-commit: 21cdb6c18f85fe538ca8740bc79f11fbe08d0197
--
2.38.1
On Tue, Nov 8, 2022 at 9:01 AM Nathan Chancellor <[email protected]> wrote:
>
> Clang warns:
>
> drivers/cpufreq/acpi-cpufreq.c:970:24: error: variable 'ret' is uninitialized when used here [-Werror,-Wuninitialized]
> acpi_cpufreq_online = ret;
> ^~~
> drivers/cpufreq/acpi-cpufreq.c:960:9: note: initialize the variable 'ret' to silence this warning
> int ret;
> ^
> = 0
> 1 error generated.
>
> Both ret and acpi_cpufreq_online are now unused so they can be safely
> removed, clearing up the warning.
>
> Fixes: 13fdbc8b8da6 ("cpufreq: ACPI: Defer setting boost MSRs")
> Link: https://github.com/ClangBuiltLinux/linux/issues/1757
> Signed-off-by: Nathan Chancellor <[email protected]>
Thanks for the patch!
Reviewed-by: Nick Desaulniers <[email protected]>
> ---
> drivers/cpufreq/acpi-cpufreq.c | 6 ------
> 1 file changed, 6 deletions(-)
>
> diff --git a/drivers/cpufreq/acpi-cpufreq.c b/drivers/cpufreq/acpi-cpufreq.c
> index c8fdfcf659e6..74ef0e05ff7b 100644
> --- a/drivers/cpufreq/acpi-cpufreq.c
> +++ b/drivers/cpufreq/acpi-cpufreq.c
> @@ -953,12 +953,8 @@ static struct cpufreq_driver acpi_cpufreq_driver = {
> .attr = acpi_cpufreq_attr,
> };
>
> -static enum cpuhp_state acpi_cpufreq_online;
> -
> static void __init acpi_cpufreq_boost_init(void)
> {
> - int ret;
> -
> if (!(boot_cpu_has(X86_FEATURE_CPB) || boot_cpu_has(X86_FEATURE_IDA))) {
> pr_debug("Boost capabilities not present in the processor\n");
> return;
> @@ -966,8 +962,6 @@ static void __init acpi_cpufreq_boost_init(void)
>
> acpi_cpufreq_driver.set_boost = set_boost;
> acpi_cpufreq_driver.boost_enabled = boost_state(0);
> -
> - acpi_cpufreq_online = ret;
> }
>
> static int __init acpi_cpufreq_init(void)
>
> base-commit: 21cdb6c18f85fe538ca8740bc79f11fbe08d0197
> --
> 2.38.1
>
--
Thanks,
~Nick Desaulniers
On Wed, Nov 16, 2022 at 08:50:41PM +0100, Rafael J. Wysocki wrote:
> On Wed, Nov 16, 2022 at 8:34 PM Nathan Chancellor <[email protected]> wrote:
> >
> > Hi all,
> >
> > Small ping, was there an issue with this change? It seems pretty
> > straight forward to me and it is wreaking havoc on our build matrix due
> > to -Werror.
>
> Applied now, thanks!
Thanks a lot!
> > On Tue, Nov 08, 2022 at 10:01:03AM -0700, Nathan Chancellor wrote:
> > > Clang warns:
> > >
> > > drivers/cpufreq/acpi-cpufreq.c:970:24: error: variable 'ret' is uninitialized when used here [-Werror,-Wuninitialized]
> > > acpi_cpufreq_online = ret;
> > > ^~~
> > > drivers/cpufreq/acpi-cpufreq.c:960:9: note: initialize the variable 'ret' to silence this warning
> > > int ret;
> > > ^
> > > = 0
> > > 1 error generated.
> > >
> > > Both ret and acpi_cpufreq_online are now unused so they can be safely
> > > removed, clearing up the warning.
> > >
> > > Fixes: 13fdbc8b8da6 ("cpufreq: ACPI: Defer setting boost MSRs")
> > > Link: https://github.com/ClangBuiltLinux/linux/issues/1757
> > > Signed-off-by: Nathan Chancellor <[email protected]>
> > > ---
> > > drivers/cpufreq/acpi-cpufreq.c | 6 ------
> > > 1 file changed, 6 deletions(-)
> > >
> > > diff --git a/drivers/cpufreq/acpi-cpufreq.c b/drivers/cpufreq/acpi-cpufreq.c
> > > index c8fdfcf659e6..74ef0e05ff7b 100644
> > > --- a/drivers/cpufreq/acpi-cpufreq.c
> > > +++ b/drivers/cpufreq/acpi-cpufreq.c
> > > @@ -953,12 +953,8 @@ static struct cpufreq_driver acpi_cpufreq_driver = {
> > > .attr = acpi_cpufreq_attr,
> > > };
> > >
> > > -static enum cpuhp_state acpi_cpufreq_online;
> > > -
> > > static void __init acpi_cpufreq_boost_init(void)
> > > {
> > > - int ret;
> > > -
> > > if (!(boot_cpu_has(X86_FEATURE_CPB) || boot_cpu_has(X86_FEATURE_IDA))) {
> > > pr_debug("Boost capabilities not present in the processor\n");
> > > return;
> > > @@ -966,8 +962,6 @@ static void __init acpi_cpufreq_boost_init(void)
> > >
> > > acpi_cpufreq_driver.set_boost = set_boost;
> > > acpi_cpufreq_driver.boost_enabled = boost_state(0);
> > > -
> > > - acpi_cpufreq_online = ret;
> > > }
> > >
> > > static int __init acpi_cpufreq_init(void)
> > >
> > > base-commit: 21cdb6c18f85fe538ca8740bc79f11fbe08d0197
> > > --
> > > 2.38.1
> > >
Hi all,
Small ping, was there an issue with this change? It seems pretty
straight forward to me and it is wreaking havoc on our build matrix due
to -Werror.
Cheers,
Nathan
On Tue, Nov 08, 2022 at 10:01:03AM -0700, Nathan Chancellor wrote:
> Clang warns:
>
> drivers/cpufreq/acpi-cpufreq.c:970:24: error: variable 'ret' is uninitialized when used here [-Werror,-Wuninitialized]
> acpi_cpufreq_online = ret;
> ^~~
> drivers/cpufreq/acpi-cpufreq.c:960:9: note: initialize the variable 'ret' to silence this warning
> int ret;
> ^
> = 0
> 1 error generated.
>
> Both ret and acpi_cpufreq_online are now unused so they can be safely
> removed, clearing up the warning.
>
> Fixes: 13fdbc8b8da6 ("cpufreq: ACPI: Defer setting boost MSRs")
> Link: https://github.com/ClangBuiltLinux/linux/issues/1757
> Signed-off-by: Nathan Chancellor <[email protected]>
> ---
> drivers/cpufreq/acpi-cpufreq.c | 6 ------
> 1 file changed, 6 deletions(-)
>
> diff --git a/drivers/cpufreq/acpi-cpufreq.c b/drivers/cpufreq/acpi-cpufreq.c
> index c8fdfcf659e6..74ef0e05ff7b 100644
> --- a/drivers/cpufreq/acpi-cpufreq.c
> +++ b/drivers/cpufreq/acpi-cpufreq.c
> @@ -953,12 +953,8 @@ static struct cpufreq_driver acpi_cpufreq_driver = {
> .attr = acpi_cpufreq_attr,
> };
>
> -static enum cpuhp_state acpi_cpufreq_online;
> -
> static void __init acpi_cpufreq_boost_init(void)
> {
> - int ret;
> -
> if (!(boot_cpu_has(X86_FEATURE_CPB) || boot_cpu_has(X86_FEATURE_IDA))) {
> pr_debug("Boost capabilities not present in the processor\n");
> return;
> @@ -966,8 +962,6 @@ static void __init acpi_cpufreq_boost_init(void)
>
> acpi_cpufreq_driver.set_boost = set_boost;
> acpi_cpufreq_driver.boost_enabled = boost_state(0);
> -
> - acpi_cpufreq_online = ret;
> }
>
> static int __init acpi_cpufreq_init(void)
>
> base-commit: 21cdb6c18f85fe538ca8740bc79f11fbe08d0197
> --
> 2.38.1
>
On Wed, Nov 16, 2022 at 8:34 PM Nathan Chancellor <[email protected]> wrote:
>
> Hi all,
>
> Small ping, was there an issue with this change? It seems pretty
> straight forward to me and it is wreaking havoc on our build matrix due
> to -Werror.
Applied now, thanks!
> On Tue, Nov 08, 2022 at 10:01:03AM -0700, Nathan Chancellor wrote:
> > Clang warns:
> >
> > drivers/cpufreq/acpi-cpufreq.c:970:24: error: variable 'ret' is uninitialized when used here [-Werror,-Wuninitialized]
> > acpi_cpufreq_online = ret;
> > ^~~
> > drivers/cpufreq/acpi-cpufreq.c:960:9: note: initialize the variable 'ret' to silence this warning
> > int ret;
> > ^
> > = 0
> > 1 error generated.
> >
> > Both ret and acpi_cpufreq_online are now unused so they can be safely
> > removed, clearing up the warning.
> >
> > Fixes: 13fdbc8b8da6 ("cpufreq: ACPI: Defer setting boost MSRs")
> > Link: https://github.com/ClangBuiltLinux/linux/issues/1757
> > Signed-off-by: Nathan Chancellor <[email protected]>
> > ---
> > drivers/cpufreq/acpi-cpufreq.c | 6 ------
> > 1 file changed, 6 deletions(-)
> >
> > diff --git a/drivers/cpufreq/acpi-cpufreq.c b/drivers/cpufreq/acpi-cpufreq.c
> > index c8fdfcf659e6..74ef0e05ff7b 100644
> > --- a/drivers/cpufreq/acpi-cpufreq.c
> > +++ b/drivers/cpufreq/acpi-cpufreq.c
> > @@ -953,12 +953,8 @@ static struct cpufreq_driver acpi_cpufreq_driver = {
> > .attr = acpi_cpufreq_attr,
> > };
> >
> > -static enum cpuhp_state acpi_cpufreq_online;
> > -
> > static void __init acpi_cpufreq_boost_init(void)
> > {
> > - int ret;
> > -
> > if (!(boot_cpu_has(X86_FEATURE_CPB) || boot_cpu_has(X86_FEATURE_IDA))) {
> > pr_debug("Boost capabilities not present in the processor\n");
> > return;
> > @@ -966,8 +962,6 @@ static void __init acpi_cpufreq_boost_init(void)
> >
> > acpi_cpufreq_driver.set_boost = set_boost;
> > acpi_cpufreq_driver.boost_enabled = boost_state(0);
> > -
> > - acpi_cpufreq_online = ret;
> > }
> >
> > static int __init acpi_cpufreq_init(void)
> >
> > base-commit: 21cdb6c18f85fe538ca8740bc79f11fbe08d0197
> > --
> > 2.38.1
> >