lib: utils/irqchip: Avoid redundant writes to APLIC CLRIE register

Each APLIC CLRIE register allows disabling 32 interrupt sources at a time by writing -1 so no need to write CLRIE register separately for each interrupt source. Fixes: 9979265 ("lib: utils/irqchip: Add APLIC initialization library") Signed-off-by: Anup Patel <[email protected]> Reviewed-by: Atish Patra <[email protected]>
riscv-software-src · Nov 24, 2023 · 791704c · 791704c
1 parent 574b9c8
commit 791704c
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/lib/utils/irqchip/aplic.c b/lib/utils/irqchip/aplic.c
@@ -193,7 +193,7 @@ int aplic_cold_irqchip_init(struct aplic_data *aplic)
 	writel(0, (void *)(aplic->addr + APLIC_DOMAINCFG));
 
 	/* Disable all interrupts */
-	for (i = 0; i <= aplic->num_source; i++)
+	for (i = 0; i <= aplic->num_source; i += 32)
 		writel(-1U, (void *)(aplic->addr + APLIC_CLRIE_BASE +
 				     (i / 32) * sizeof(u32)));