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| author | Gustavo A. R. Silva <gustavo@embeddedor.com> | 2018-02-07 02:36:17 +0300 |
|---|---|---|
| committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2018-02-07 13:15:02 +0300 |
| commit | b52f451105020677cad61a13b3b67af3fdedb91f (patch) | |
| tree | 472e39c7427a8e3dd1d29232b06c92140d0227da /drivers | |
| parent | 1a9a126b5098160ca934a352617e9e65dbfa679d (diff) | |
| download | linux-b52f451105020677cad61a13b3b67af3fdedb91f.tar.xz | |
ACPI / CPPC: Use 64-bit arithmetic instead of 32-bit
Add suffix ULL to constant 500 in order to give the compiler complete
information about the proper arithmetic to use. Notice that this
constant is used in a context that expects an expression of type
u64 (64 bits, unsigned).
The expression NUM_RETRIES * cppc_ss->latency at line 578, which at
preprocessing time translates to 500 * cppc_ss->latency is currently
being evaluated using 32-bit arithmetic.
Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/acpi/cppc_acpi.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/acpi/cppc_acpi.c b/drivers/acpi/cppc_acpi.c index 06ea4749ebd9..0afbb2658cbc 100644 --- a/drivers/acpi/cppc_acpi.c +++ b/drivers/acpi/cppc_acpi.c @@ -119,7 +119,7 @@ static DEFINE_PER_CPU(struct cpc_desc *, cpc_desc_ptr); * to PCC commands. Keeping it high enough to cover emulators where * the processors run painfully slow. */ -#define NUM_RETRIES 500 +#define NUM_RETRIES 500ULL struct cppc_attr { struct attribute attr; |