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 --- drivers/ieee1394/csr1212.c | 2 +- drivers/ieee1394/csr1212.h | 1 + drivers/ieee1394/highlevel.c | 9 +++++---- drivers/ieee1394/eth1394.c | 16 +++++++--------- drivers/ieee1394/eth1394.h | 2 -- drivers/ieee1394/sbp2.c | 8 ++++---- 6 files changed, 18 insertions(+), 20 deletions(-) Index: linux/drivers/ieee1394/csr1212.h =================================================================== --- linux.orig/drivers/ieee1394/csr1212.h 2006-04-24 22:20:24.000000000 +0200 +++ linux/drivers/ieee1394/csr1212.h 2006-06-03 12:52:32.000000000 +0200 @@ -192,6 +192,7 @@ #define CSR1212_EXTENDED_ROM_SIZE (0x10000 * sizeof(u_int32_t)) +#define CSR1212_INVALID_ADDR_SPACE -1 /* Config ROM image structures */ struct csr1212_bus_info_block_img { Index: linux/drivers/ieee1394/csr1212.c =================================================================== --- linux.orig/drivers/ieee1394/csr1212.c 2006-04-24 22:20:24.000000000 +0200 +++ linux/drivers/ieee1394/csr1212.c 2006-06-03 12:12:20.000000000 +0200 @@ -779,7 +779,7 @@ static int csr1212_append_new_cache(stru 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) { Index: linux/drivers/ieee1394/highlevel.c =================================================================== --- linux.orig/drivers/ieee1394/highlevel.c 2006-06-03 02:13:18.000000000 +0200 +++ linux/drivers/ieee1394/highlevel.c 2006-06-03 12:18:23.000000000 +0200 @@ -301,7 +301,7 @@ u64 hpsb_allocate_and_register_addrspace { struct hpsb_address_serve *as, *a1, *a2; struct list_head *entry; - u64 retval = ~0ULL; + u64 retval = CSR1212_INVALID_ADDR_SPACE; unsigned long flags; u64 align_mask = ~(alignment - 1); @@ -315,9 +315,10 @@ u64 hpsb_allocate_and_register_addrspace /* default range, * avoids controller's posted write area (see OHCI 1.1 clause 1.5) */ - if (start == ~0ULL && end == ~0ULL) { + if (start == CSR1212_INVALID_ADDR_SPACE && + end == CSR1212_INVALID_ADDR_SPACE) { start = host->middle_addr_space; - end = CSR1212_ALL_SPACE_END; + end = CSR1212_ALL_SPACE_END; } if (((start|end) & ~align_mask) || (start >= end) || (end > 0x1000000000000ULL)) { @@ -361,7 +362,7 @@ u64 hpsb_allocate_and_register_addrspace write_unlock_irqrestore(&addr_space_lock, flags); - if (retval == ~0ULL) { + if (retval == CSR1212_INVALID_ADDR_SPACE) { kfree(as); } Index: linux/drivers/ieee1394/eth1394.h =================================================================== --- linux.orig/drivers/ieee1394/eth1394.h 2006-04-24 22:20:24.000000000 +0200 +++ linux/drivers/ieee1394/eth1394.h 2006-06-03 12:14:40.000000000 +0200 @@ -32,8 +32,6 @@ * S3200 (per Table 16-3 of IEEE 1394b-2002). */ #define ETHER1394_REGION_ADDR_LEN 4096 -#define ETHER1394_INVALID_ADDR ~0ULL - /* GASP identifier numbers for IPv4 over IEEE 1394 */ #define ETHER1394_GASP_SPECIFIER_ID 0x00005E #define ETHER1394_GASP_SPECIFIER_ID_HI ((ETHER1394_GASP_SPECIFIER_ID >> 8) & 0xffff) Index: linux/drivers/ieee1394/eth1394.c =================================================================== --- linux.orig/drivers/ieee1394/eth1394.c 2006-06-03 02:13:18.000000000 +0200 +++ linux/drivers/ieee1394/eth1394.c 2006-06-03 12:22:44.000000000 +0200 @@ -367,7 +367,7 @@ static int eth1394_probe(struct device * spin_lock_init(&node_info->pdg.lock); INIT_LIST_HEAD(&node_info->pdg.list); node_info->pdg.sz = 0; - node_info->fifo = ETHER1394_INVALID_ADDR; + node_info->fifo = CSR1212_INVALID_ADDR_SPACE; ud->device.driver_data = node_info; new_node->ud = ud; @@ -566,13 +566,11 @@ static void ether1394_add_host (struct h if (!(host->config_roms & HPSB_CONFIG_ROM_ENTRY_IP1394)) return; - fifo_addr = hpsb_allocate_and_register_addrspace(ð1394_highlevel, - host, - &addr_ops, - ETHER1394_REGION_ADDR_LEN, - ETHER1394_REGION_ADDR_LEN, - -1, -1); - if (fifo_addr == ~0ULL) + fifo_addr = hpsb_allocate_and_register_addrspace( + ð1394_highlevel, host, &addr_ops, + ETHER1394_REGION_ADDR_LEN, ETHER1394_REGION_ADDR_LEN, + CSR1212_INVALID_ADDR_SPACE, CSR1212_INVALID_ADDR_SPACE); + if (fifo_addr == CSR1212_INVALID_ADDR_SPACE) goto out; /* We should really have our own alloc_hpsbdev() function in @@ -1686,7 +1684,7 @@ static int ether1394_tx (struct sk_buff goto fail; } node_info = (struct eth1394_node_info*)node->ud->device.driver_data; - if (node_info->fifo == ETHER1394_INVALID_ADDR) { + if (node_info->fifo == CSR1212_INVALID_ADDR_SPACE) { ret = -EAGAIN; goto fail; } Index: linux/drivers/ieee1394/sbp2.c =================================================================== --- linux.orig/drivers/ieee1394/sbp2.c 2006-06-03 11:49:18.000000000 +0200 +++ linux/drivers/ieee1394/sbp2.c 2006-06-03 12:27:16.000000000 +0200 @@ -794,7 +794,7 @@ static struct scsi_id_instance_data *sbp scsi_id->ud = ud; scsi_id->speed_code = IEEE1394_SPEED_100; scsi_id->max_payload_size = sbp2_speedto_max_payload[IEEE1394_SPEED_100]; - scsi_id->status_fifo_addr = ~0ULL; + scsi_id->status_fifo_addr = CSR1212_INVALID_ADDR_SPACE; atomic_set(&scsi_id->sbp2_login_complete, 0); INIT_LIST_HEAD(&scsi_id->sbp2_command_orb_inuse); INIT_LIST_HEAD(&scsi_id->sbp2_command_orb_completed); @@ -848,7 +848,7 @@ static struct scsi_id_instance_data *sbp &sbp2_highlevel, ud->ne->host, &sbp2_ops, sizeof(struct sbp2_status_block), sizeof(quadlet_t), ud->ne->host->low_addr_space, CSR1212_ALL_SPACE_END); - if (scsi_id->status_fifo_addr == ~0ULL) { + if (scsi_id->status_fifo_addr == CSR1212_INVALID_ADDR_SPACE) { SBP2_ERR("failed to allocate status FIFO address range"); goto failed_alloc; } @@ -1090,9 +1090,9 @@ static void sbp2_remove_device(struct sc SBP2_DMA_FREE("single query logins data"); } - if (scsi_id->status_fifo_addr != ~0ULL) + if (scsi_id->status_fifo_addr != CSR1212_INVALID_ADDR_SPACE) hpsb_unregister_addrspace(&sbp2_highlevel, hi->host, - scsi_id->status_fifo_addr); + scsi_id->status_fifo_addr); scsi_id->ud->device.driver_data = NULL;