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s390/nospec: Switch over to sysfs_emit()

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Per Documentation/filesystems/sysfs.rst, sysfs_emit() is preferred over
sprintf for presenting attributes to user space. Convert the left-over
uses in the s390/nospec-sysfs code.

Signed-off-by: Mete Durlu <meted@linux.ibm.com>
Reviewed-by: Gerd Bayer <gbayer@linux.ibm.com>
Reviewed-by: Heiko Carstens <hca@linux.ibm.com>
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
This commit is contained in:
Mete Durlu 2024-10-23 14:10:58 +02:00 committed by Heiko Carstens
parent d151f8f788
commit c50262498d
1 changed files with 5 additions and 5 deletions
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10
arch/s390/kernel/nospec-sysfs.c
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@ -7,17 +7,17 @@
ssize_t cpu_show_spectre_v1(struct device *dev, ssize_t cpu_show_spectre_v1(struct device *dev,
struct device_attribute *attr, char *buf) struct device_attribute *attr, char *buf)
{ {
return sprintf(buf, "Mitigation: __user pointer sanitization\n"); return sysfs_emit(buf, "Mitigation: __user pointer sanitization\n");
} }
ssize_t cpu_show_spectre_v2(struct device *dev, ssize_t cpu_show_spectre_v2(struct device *dev,
struct device_attribute *attr, char *buf) struct device_attribute *attr, char *buf)
{ {
if (test_facility(156)) if (test_facility(156))
return sprintf(buf, "Mitigation: etokens\n"); return sysfs_emit(buf, "Mitigation: etokens\n");
if (nospec_uses_trampoline()) if (nospec_uses_trampoline())
return sprintf(buf, "Mitigation: execute trampolines\n"); return sysfs_emit(buf, "Mitigation: execute trampolines\n");
if (nobp_enabled()) if (nobp_enabled())
return sprintf(buf, "Mitigation: limited branch prediction\n"); return sysfs_emit(buf, "Mitigation: limited branch prediction\n");
return sprintf(buf, "Vulnerable\n"); return sysfs_emit(buf, "Vulnerable\n");
} }