Commit 72fbcd05 authored Oct 31, 2019 by Thomas Richter Committed by Vasily Gorbik Nov 12, 2019

s390/cpum_sf: Assign error value to err variable



When starting the CPU Measurement sampling facility using
qsi() function, this function may return an error value.
This error value is referenced in the else part of the
if statement to dump its value in a debug statement.
Right now this value is always zero because it has not been
assigned a value.

Signed-off-by: Thomas Richter <tmricht@linux.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>

parent c1838834

arch/s390/kernel/perf_cpum_sf.c

+2 −1

Original line number	Diff line number	Diff line
		@@ -1007,7 +1007,8 @@ static void cpumsf_pmu_disable(struct pmu *pmu)
		}

		/* Save state of TEAR and DEAR register contents */
		if (!qsi(&si)) {
		err = qsi(&si);
		if (!err) {
		/* TEAR/DEAR values are valid only if the sampling facility is
		* enabled. Note that cpumsf_pmu_disable() might be called even
		* for a disabled sampling facility because cpumsf_pmu_enable()

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