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9e2fcfc324
[ Upstream commit efc4c35b741af973de90f6826bf35d3b3ac36bf1 ]
Fix inconsistent error handling for sscanf() return value check.
Implicit boolean conversion is used instead of explicit return
value checks. The code checks if (!sscanf(...)) which is incorrect
because:
1. sscanf returns the number of successfully parsed items
2. On success, it returns 1 (one item passed)
3. On failure, it returns 0 or EOF
4. The check 'if (!sscanf(...))' is wrong because it treats
success (1) as failure
All occurrences of sscanf() now uses explicit return value check.
With this behavior it returns '-EINVAL' when parsing fails (returns
0 or EOF), and continues when parsing succeeds (returns 1).
Signed-off-by: Sumeet Pawnikar <sumeet4linux@gmail.com>
[ rjw: Subject and changelog edits ]
Link: https://patch.msgid.link/20251207151549.202452-1-sumeet4linux@gmail.com
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
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| .. | ||
| arm_scmi_powercap.c | ||
| dtpm_cpu.c | ||
| dtpm_devfreq.c | ||
| dtpm_subsys.h | ||
| dtpm.c | ||
| idle_inject.c | ||
| intel_rapl_common.c | ||
| intel_rapl_msr.c | ||
| intel_rapl_tpmi.c | ||
| Kconfig | ||
| Makefile | ||
| powercap_sys.c | ||