The size caculation is wrong. It should be end - start + 1.
Use resource_size() to calculate it correctly.
Signed-off-by: Dan Carpenter <error27@xxxxxxxxx>
diff --git a/drivers/misc/hdpuftrs/hdpu_nexus.c b/drivers/misc/hdpuftrs/hdpu_nexus.c
index ce39fa5..bce5029 100644
--- a/drivers/misc/hdpuftrs/hdpu_nexus.c
+++ b/drivers/misc/hdpuftrs/hdpu_nexus.c
@@ -92,8 +92,7 @@ static int hdpu_nexus_probe(struct platform_device *pdev)
"Invalid memory resource.\n");
return -EINVAL;
}
- nexus_id_addr = ioremap(res->start,
- (unsigned long)(res->end - res->start));
+ nexus_id_addr = ioremap(res->start, resource_size(res));
if (nexus_id_addr) {
slot_id = (*nexus_id_addr >> 8) & 0x1f;
chassis_id = *nexus_id_addr & 0xff;
--
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