diff options
Diffstat (limited to 'drivers')
-rw-r--r-- | drivers/pcmcia/rsrc_nonstatic.c | 89 |
1 files changed, 38 insertions, 51 deletions
diff --git a/drivers/pcmcia/rsrc_nonstatic.c b/drivers/pcmcia/rsrc_nonstatic.c index 9a0b835d612b..6b463609a3aa 100644 --- a/drivers/pcmcia/rsrc_nonstatic.c +++ b/drivers/pcmcia/rsrc_nonstatic.c @@ -683,27 +683,23 @@ static struct resource * nonstatic_find_mem_region(u_long base, u_long num, } -static int adjust_memory(struct pcmcia_socket *s, adjust_t *adj) +static int adjust_memory(struct pcmcia_socket *s, unsigned int action, unsigned long start, unsigned long end) { - u_long base, num; struct socket_data *data = s->resource_data; - int ret; - - base = adj->resource.memory.Base; - num = adj->resource.memory.Size; - if ((num == 0) || (base+num-1 < base)) - return CS_BAD_SIZE; + unsigned long size = end - start + 1; + int ret = 0; - ret = CS_SUCCESS; + if (end <= start) + return -EINVAL; down(&rsrc_sem); - switch (adj->Action) { + switch (action) { case ADD_MANAGED_RESOURCE: - ret = add_interval(&data->mem_db, base, num); + ret = add_interval(&data->mem_db, start, size); break; case REMOVE_MANAGED_RESOURCE: - ret = sub_interval(&data->mem_db, base, num); - if (ret == CS_SUCCESS) { + ret = sub_interval(&data->mem_db, start, size); + if (!ret) { struct pcmcia_socket *socket; down_read(&pcmcia_socket_list_rwsem); list_for_each_entry(socket, &pcmcia_socket_list, socket_list) @@ -712,7 +708,7 @@ static int adjust_memory(struct pcmcia_socket *s, adjust_t *adj) } break; default: - ret = CS_UNSUPPORTED_FUNCTION; + ret = -EINVAL; } up(&rsrc_sem); @@ -720,36 +716,35 @@ static int adjust_memory(struct pcmcia_socket *s, adjust_t *adj) } -static int adjust_io(struct pcmcia_socket *s, adjust_t *adj) +static int adjust_io(struct pcmcia_socket *s, unsigned int action, unsigned long start, unsigned long end) { struct socket_data *data = s->resource_data; - kio_addr_t base, num; - int ret = CS_SUCCESS; + unsigned long size = end - start + 1; + int ret = 0; - base = adj->resource.io.BasePort; - num = adj->resource.io.NumPorts; - if ((base < 0) || (base > 0xffff)) - return CS_BAD_BASE; - if ((num <= 0) || (base+num > 0x10000) || (base+num <= base)) - return CS_BAD_SIZE; + if (end <= start) + return -EINVAL; + + if (end > IO_SPACE_LIMIT) + return -EINVAL; down(&rsrc_sem); - switch (adj->Action) { + switch (action) { case ADD_MANAGED_RESOURCE: - if (add_interval(&data->io_db, base, num) != 0) { - ret = CS_IN_USE; + if (add_interval(&data->io_db, start, size) != 0) { + ret = -EBUSY; break; } #ifdef CONFIG_PCMCIA_PROBE if (probe_io) - do_io_probe(s, base, num); + do_io_probe(s, start, size); #endif break; case REMOVE_MANAGED_RESOURCE: - sub_interval(&data->io_db, base, num); + sub_interval(&data->io_db, start, size); break; default: - ret = CS_UNSUPPORTED_FUNCTION; + ret = -EINVAL; break; } up(&rsrc_sem); @@ -760,11 +755,15 @@ static int adjust_io(struct pcmcia_socket *s, adjust_t *adj) static int nonstatic_adjust_resource_info(struct pcmcia_socket *s, adjust_t *adj) { + unsigned long end; + switch (adj->Resource) { case RES_MEMORY_RANGE: - return adjust_memory(s, adj); + end = adj->resource.memory.Base + adj->resource.memory.Size - 1; + return adjust_memory(s, adj->Action, adj->resource.memory.Base, end); case RES_IO_RANGE: - return adjust_io(s, adj); + end = adj->resource.io.BasePort + adj->resource.io.NumPorts - 1; + return adjust_io(s, adj->Action, adj->resource.io.BasePort, end); } return CS_UNSUPPORTED_FUNCTION; } @@ -845,17 +844,16 @@ static ssize_t store_io_db(struct class_device *class_dev, const char *buf, size { struct pcmcia_socket *s = class_get_devdata(class_dev); unsigned long start_addr, end_addr; - unsigned int add = 1; - adjust_t adj; + unsigned int add = ADD_MANAGED_RESOURCE; ssize_t ret = 0; ret = sscanf (buf, "+ 0x%lx - 0x%lx", &start_addr, &end_addr); if (ret != 2) { ret = sscanf (buf, "- 0x%lx - 0x%lx", &start_addr, &end_addr); - add = 0; + add = REMOVE_MANAGED_RESOURCE; if (ret != 2) { ret = sscanf (buf, "0x%lx - 0x%lx", &start_addr, &end_addr); - add = 1; + add = ADD_MANAGED_RESOURCE; if (ret != 2) return -EINVAL; } @@ -863,12 +861,7 @@ static ssize_t store_io_db(struct class_device *class_dev, const char *buf, size if (end_addr <= start_addr) return -EINVAL; - adj.Action = add ? ADD_MANAGED_RESOURCE : REMOVE_MANAGED_RESOURCE; - adj.Resource = RES_IO_RANGE; - adj.resource.io.BasePort = start_addr; - adj.resource.io.NumPorts = end_addr - start_addr + 1; - - ret = adjust_io(s, &adj); + ret = adjust_io(s, add, start_addr, end_addr); return ret ? ret : count; } @@ -901,17 +894,16 @@ static ssize_t store_mem_db(struct class_device *class_dev, const char *buf, siz { struct pcmcia_socket *s = class_get_devdata(class_dev); unsigned long start_addr, end_addr; - unsigned int add = 1; - adjust_t adj; + unsigned int add = ADD_MANAGED_RESOURCE; ssize_t ret = 0; ret = sscanf (buf, "+ 0x%lx - 0x%lx", &start_addr, &end_addr); if (ret != 2) { ret = sscanf (buf, "- 0x%lx - 0x%lx", &start_addr, &end_addr); - add = 0; + add = REMOVE_MANAGED_RESOURCE; if (ret != 2) { ret = sscanf (buf, "0x%lx - 0x%lx", &start_addr, &end_addr); - add = 1; + add = ADD_MANAGED_RESOURCE; if (ret != 2) return -EINVAL; } @@ -919,12 +911,7 @@ static ssize_t store_mem_db(struct class_device *class_dev, const char *buf, siz if (end_addr <= start_addr) return -EINVAL; - adj.Action = add ? ADD_MANAGED_RESOURCE : REMOVE_MANAGED_RESOURCE; - adj.Resource = RES_MEMORY_RANGE; - adj.resource.memory.Base = start_addr; - adj.resource.memory.Size = end_addr - start_addr + 1; - - ret = adjust_memory(s, &adj); + ret = adjust_memory(s, add, start_addr, end_addr); return ret ? ret : count; } |