ieee1394: add preprocessor constant for invalid csr address
Replace occurrences of the magic value ~(u64)0 for invalid
CSR address spaces by a named constant for better readability.
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
Signed-off-by: Ben Collins <bcollins@ubuntu.com>
diff --git a/drivers/ieee1394/csr1212.c b/drivers/ieee1394/csr1212.c
index 1577354..586f71e 100644
--- a/drivers/ieee1394/csr1212.c
+++ b/drivers/ieee1394/csr1212.c
@@ -779,7 +779,7 @@
romsize = (romsize + (csr->max_rom - 1)) & ~(csr->max_rom - 1);
csr_addr = csr->ops->allocate_addr_range(romsize, csr->max_rom, csr->private);
- if (csr_addr == ~0ULL) {
+ if (csr_addr == CSR1212_INVALID_ADDR_SPACE) {
return CSR1212_ENOMEM;
}
if (csr_addr < CSR1212_REGISTER_SPACE_BASE) {