diff --git a/drivers/media/platform/sti/c8sectpfe/c8sectpfe-core.c b/drivers/media/platform/sti/c8sectpfe/c8sectpfe-core.c
index 8bd19e61846d..ef529dfe1e8c 100644
--- a/drivers/media/platform/sti/c8sectpfe/c8sectpfe-core.c
+++ b/drivers/media/platform/sti/c8sectpfe/c8sectpfe-core.c
@@ -693,7 +693,7 @@ static int c8sectpfe_probe(struct platform_device *pdev)
 	if (IS_ERR(fei->sram))
 		return PTR_ERR(fei->sram);
 
-	fei->sram_size = res->end - res->start;
+	fei->sram_size = resource_size(res);
 
 	fei->idle_irq = platform_get_irq_byname(pdev, "c8sectpfe-idle-irq");
 	if (fei->idle_irq < 0) {