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Power management fixes for 6.5-rc6

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- Make amd-pstate use device_attributes as expected by the CPU root
    kobject (Thomas Weißschuh).
 
  - Restore the previous behavior of resume_store() when hibernation is
    not available which is to return the full number of bytes that were
    to be written by user space (Vlastimil Babka).
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Merge tag 'pm-6.5-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm

Pull power management fixes from Rafael Wysocki:
 "These fix an amd-pstate cpufreq driver issues and recently introduced
  hibernation-related breakage.

  Specifics:

   - Make amd-pstate use device_attributes as expected by the CPU root
     kobject (Thomas Weißschuh)

   - Restore the previous behavior of resume_store() when hibernation is
     not available which is to return the full number of bytes that were
     to be written by user space (Vlastimil Babka)"

* tag 'pm-6.5-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
  cpufreq: amd-pstate: fix global sysfs attribute type
  PM: hibernate: fix resume_store() return value when hibernation not available
This commit is contained in:
Linus Torvalds 2023-08-11 12:24:22 -07:00
commit 9578b04c32
2 changed files with 6 additions and 6 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

10
drivers/cpufreq/amd-pstate.c
View File

@ -1012,8 +1012,8 @@ static int amd_pstate_update_status(const char *buf, size_t size)
return 0;
}
static ssize_t show_status(struct kobject *kobj,
struct kobj_attribute *attr, char *buf)
static ssize_t status_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
ssize_t ret;
@ -1024,7 +1024,7 @@ static ssize_t show_status(struct kobject *kobj,
return ret;
}
static ssize_t store_status(struct kobject *a, struct kobj_attribute *b,
static ssize_t status_store(struct device *a, struct device_attribute *b,
const char *buf, size_t count)
{
char *p = memchr(buf, '\n', count);
@ -1043,7 +1043,7 @@ cpufreq_freq_attr_ro(amd_pstate_lowest_nonlinear_freq);
cpufreq_freq_attr_ro(amd_pstate_highest_perf);
cpufreq_freq_attr_rw(energy_performance_preference);
cpufreq_freq_attr_ro(energy_performance_available_preferences);
define_one_global_rw(status);
static DEVICE_ATTR_RW(status);
static struct freq_attr *amd_pstate_attr[] = {
&amd_pstate_max_freq,
@ -1062,7 +1062,7 @@ static struct freq_attr *amd_pstate_epp_attr[] = {
};
static struct attribute *pstate_global_attributes[] = {
&status.attr,
&dev_attr_status.attr,
NULL
};

2
kernel/power/hibernate.c
View File

@ -1166,7 +1166,7 @@ static ssize_t resume_store(struct kobject *kobj, struct kobj_attribute *attr,
int error;
if (!hibernation_available())
return 0;
return n;
if (len && buf[len-1] == '\n')
len--;