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lib: sbi: Resolve the uninitialized complaint in sbi_pmu

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A recent commit (b28f0700) turns to read from CSR_MCOUNTINHIBIT after
checking the SBI_HART_HAS_MCOUNTINHIBIT HART feature, which leaves the
mctr_inhbt uninitialized in pmu_ctr_find_hw().
As a result, compiler will complain:
error: 'mctr_inhbt' may be used uninitialized in this function.

This commit resolves the issue by assigning an initial value to mctr_inhbt.

Signed-off-by: Dong Du <Dd_nirvana@sjtu.edu.cn>
Reviewed-by: Xiang W <wxjstz@126.com>
Reviewed-by: Anup Patel <anup.patel@wdc.com>
This commit is contained in:
Dong Du
2021-11-25 18:38:17 +08:00
committed by Anup Patel
parent 7a22c780df
commit 7e77706966
1 changed files with 1 additions and 1 deletions
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2
lib/sbi/sbi_pmu.c
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@@ -489,7 +489,7 @@ static int pmu_ctr_find_hw(unsigned long cbase, unsigned long cmask, unsigned lo
unsigned long ctr_mask;
int i, ret = 0, fixed_ctr, ctr_idx = SBI_ENOTSUPP;
struct sbi_pmu_hw_event *temp;
unsigned long mctr_inhbt;
unsigned long mctr_inhbt = 0;
u32 hartid = current_hartid();
struct sbi_scratch *scratch = sbi_scratch_thishart_ptr();