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csky: Fixup csky_pmu.max_period assignment 

The csky_pmu.max_period has type u64, and BIT() can only return
32 bits unsigned long on C-SKY. The initialization for max_period
will be incorrect when count_width is bigger than 32.

Use BIT_ULL()

Signed-off-by: Mao Han <han_mao@c-sky.com>
Signed-off-by: Guo Ren <ren_guo@c-sky.com>
This commit is contained in:
Mao Han 2019-09-25 17:23:02 +08:00 committed by Guo Ren
parent 48ede51fd9
commit 3a09d8e289
1 changed files with 1 additions and 1 deletions
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2
arch/csky/kernel/perf_event.c
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@ -1306,7 +1306,7 @@ int csky_pmu_device_probe(struct platform_device *pdev,
&csky_pmu.count_width)) {
csky_pmu.count_width = DEFAULT_COUNT_WIDTH;
}
csky_pmu.max_period = BIT(csky_pmu.count_width) - 1;
csky_pmu.max_period = BIT_ULL(csky_pmu.count_width) - 1;
csky_pmu.plat_device = pdev;