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-rw-r--r--drivers/pcmcia/rsrc_nonstatic.c89
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;
}
generated by cgit v1.2.3 (git 2.39.0) at 2024-12-29 15:44:07 +0300