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lib: sbi: improve the definition of SBI_IPI_EVENT_MAX

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The previous definition had the assumption that the machine word length
is equal to the word length of LONG. Remove this assumption and add a
static check to prevent errors in subsequent modifications.

Signed-off-by: Xiang W <wxjstz@126.com>
Reviewed-by: Anup Patel <anup@brainfault.org>
This commit is contained in:
Xiang W
2023-08-21 22:11:45 +08:00
committed by Anup Patel
parent a9cffd6532
commit b20bd479ef
2 changed files with 6 additions and 1 deletions
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2
include/sbi/sbi_ipi.h
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@@ -14,7 +14,7 @@
/* clang-format off */ /* clang-format off */
#define SBI_IPI_EVENT_MAX __riscv_xlen #define SBI_IPI_EVENT_MAX (8 * __SIZEOF_LONG__)
/* clang-format on */ /* clang-format on */

5
lib/sbi/sbi_ipi.c
View File

@@ -27,6 +27,11 @@ struct sbi_ipi_data {
unsigned long ipi_type; unsigned long ipi_type;
}; };
_Static_assert(
8 * sizeof(((struct sbi_ipi_data*)0)->ipi_type) == SBI_IPI_EVENT_MAX,
"type of sbi_ipi_data.ipi_type has changed, please redefine SBI_IPI_EVENT_MAX"
);
static unsigned long ipi_data_off; static unsigned long ipi_data_off;
static const struct sbi_ipi_device *ipi_dev = NULL; static const struct sbi_ipi_device *ipi_dev = NULL;
static const struct sbi_ipi_event_ops *ipi_ops_array[SBI_IPI_EVENT_MAX]; static const struct sbi_ipi_event_ops *ipi_ops_array[SBI_IPI_EVENT_MAX];