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path: root/drivers/pcmcia/rsrc_nonstatic.c
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Diffstat (limited to 'drivers/pcmcia/rsrc_nonstatic.c')
-rw-r--r--drivers/pcmcia/rsrc_nonstatic.c140
1 files changed, 75 insertions, 65 deletions
diff --git a/drivers/pcmcia/rsrc_nonstatic.c b/drivers/pcmcia/rsrc_nonstatic.c
index 00960a379b9..5301ac60358 100644
--- a/drivers/pcmcia/rsrc_nonstatic.c
+++ b/drivers/pcmcia/rsrc_nonstatic.c
@@ -75,10 +75,9 @@ static DECLARE_MUTEX(rsrc_sem);
static struct resource *
make_resource(unsigned long b, unsigned long n, int flags, char *name)
{
- struct resource *res = kmalloc(sizeof(*res), GFP_KERNEL);
+ struct resource *res = kzalloc(sizeof(*res), GFP_KERNEL);
if (res) {
- memset(res, 0, sizeof(*res));
res->name = name;
res->start = b;
res->end = b + n - 1;
@@ -200,12 +199,11 @@ static void do_io_probe(struct pcmcia_socket *s, kio_addr_t base, kio_addr_t num
base, base+num-1);
/* First, what does a floating port look like? */
- b = kmalloc(256, GFP_KERNEL);
+ b = kzalloc(256, GFP_KERNEL);
if (!b) {
printk(KERN_ERR "do_io_probe: unable to kmalloc 256 bytes");
return;
}
- memset(b, 0, 256);
for (i = base, most = 0; i < base+num; i += 8) {
res = claim_region(NULL, i, 8, IORESOURCE_IO, "PCMCIA IO probe");
if (!res)
@@ -407,69 +405,79 @@ static int do_mem_probe(u_long base, u_long num, struct pcmcia_socket *s)
static u_long inv_probe(struct resource_map *m, struct pcmcia_socket *s)
{
- struct socket_data *s_data = s->resource_data;
- u_long ok;
- if (m == &s_data->mem_db)
- return 0;
- ok = inv_probe(m->next, s);
- if (ok) {
- if (m->base >= 0x100000)
- sub_interval(&s_data->mem_db, m->base, m->num);
- return ok;
- }
- if (m->base < 0x100000)
- return 0;
- return do_mem_probe(m->base, m->num, s);
+ struct socket_data *s_data = s->resource_data;
+ u_long ok;
+ if (m == &s_data->mem_db)
+ return 0;
+ ok = inv_probe(m->next, s);
+ if (ok) {
+ if (m->base >= 0x100000)
+ sub_interval(&s_data->mem_db, m->base, m->num);
+ return ok;
+ }
+ if (m->base < 0x100000)
+ return 0;
+ return do_mem_probe(m->base, m->num, s);
}
-static void validate_mem(struct pcmcia_socket *s, unsigned int probe_mask)
+static int validate_mem(struct pcmcia_socket *s, unsigned int probe_mask)
{
- struct resource_map *m, mm;
- static u_char order[] = { 0xd0, 0xe0, 0xc0, 0xf0 };
- u_long b, i, ok = 0;
- struct socket_data *s_data = s->resource_data;
+ struct resource_map *m, mm;
+ static unsigned char order[] = { 0xd0, 0xe0, 0xc0, 0xf0 };
+ unsigned long b, i, ok = 0;
+ struct socket_data *s_data = s->resource_data;
- /* We do up to four passes through the list */
- if (probe_mask & MEM_PROBE_HIGH) {
- if (inv_probe(s_data->mem_db.next, s) > 0)
- return;
- printk(KERN_NOTICE "cs: warning: no high memory space "
- "available!\n");
- }
- if ((probe_mask & MEM_PROBE_LOW) == 0)
- return;
- for (m = s_data->mem_db.next; m != &s_data->mem_db; m = mm.next) {
- mm = *m;
- /* Only probe < 1 MB */
- if (mm.base >= 0x100000) continue;
- if ((mm.base | mm.num) & 0xffff) {
- ok += do_mem_probe(mm.base, mm.num, s);
- continue;
+ /* We do up to four passes through the list */
+ if (probe_mask & MEM_PROBE_HIGH) {
+ if (inv_probe(s_data->mem_db.next, s) > 0)
+ return 0;
+ printk(KERN_NOTICE "cs: warning: no high memory space "
+ "available!\n");
+ return -ENODEV;
}
- /* Special probe for 64K-aligned block */
- for (i = 0; i < 4; i++) {
- b = order[i] << 12;
- if ((b >= mm.base) && (b+0x10000 <= mm.base+mm.num)) {
- if (ok >= mem_limit)
- sub_interval(&s_data->mem_db, b, 0x10000);
- else
- ok += do_mem_probe(b, 0x10000, s);
- }
+
+ for (m = s_data->mem_db.next; m != &s_data->mem_db; m = mm.next) {
+ mm = *m;
+ /* Only probe < 1 MB */
+ if (mm.base >= 0x100000)
+ continue;
+ if ((mm.base | mm.num) & 0xffff) {
+ ok += do_mem_probe(mm.base, mm.num, s);
+ continue;
+ }
+ /* Special probe for 64K-aligned block */
+ for (i = 0; i < 4; i++) {
+ b = order[i] << 12;
+ if ((b >= mm.base) && (b+0x10000 <= mm.base+mm.num)) {
+ if (ok >= mem_limit)
+ sub_interval(&s_data->mem_db, b, 0x10000);
+ else
+ ok += do_mem_probe(b, 0x10000, s);
+ }
+ }
}
- }
+
+ if (ok > 0)
+ return 0;
+
+ return -ENODEV;
}
#else /* CONFIG_PCMCIA_PROBE */
-static void validate_mem(struct pcmcia_socket *s, unsigned int probe_mask)
+static int validate_mem(struct pcmcia_socket *s, unsigned int probe_mask)
{
struct resource_map *m, mm;
struct socket_data *s_data = s->resource_data;
+ unsigned long ok = 0;
for (m = s_data->mem_db.next; m != &s_data->mem_db; m = mm.next) {
mm = *m;
- do_mem_probe(mm.base, mm.num, s);
+ ok += do_mem_probe(mm.base, mm.num, s);
}
+ if (ok > 0)
+ return 0;
+ return -ENODEV;
}
#endif /* CONFIG_PCMCIA_PROBE */
@@ -478,27 +486,30 @@ static void validate_mem(struct pcmcia_socket *s, unsigned int probe_mask)
/*
* Locking note: Must be called with skt_sem held!
*/
-static void pcmcia_nonstatic_validate_mem(struct pcmcia_socket *s)
+static int pcmcia_nonstatic_validate_mem(struct pcmcia_socket *s)
{
struct socket_data *s_data = s->resource_data;
- if (probe_mem) {
- unsigned int probe_mask;
+ unsigned int probe_mask = MEM_PROBE_LOW;
+ int ret = 0;
- down(&rsrc_sem);
+ if (!probe_mem)
+ return 0;
- probe_mask = MEM_PROBE_LOW;
- if (s->features & SS_CAP_PAGE_REGS)
- probe_mask = MEM_PROBE_HIGH;
+ down(&rsrc_sem);
- if (probe_mask & ~s_data->rsrc_mem_probe) {
+ if (s->features & SS_CAP_PAGE_REGS)
+ probe_mask = MEM_PROBE_HIGH;
+
+ if (probe_mask & ~s_data->rsrc_mem_probe) {
+ if (s->state & SOCKET_PRESENT)
+ ret = validate_mem(s, probe_mask);
+ if (!ret)
s_data->rsrc_mem_probe |= probe_mask;
+ }
- if (s->state & SOCKET_PRESENT)
- validate_mem(s, probe_mask);
- }
+ up(&rsrc_sem);
- up(&rsrc_sem);
- }
+ return ret;
}
struct pcmcia_align_data {
@@ -837,10 +848,9 @@ static int nonstatic_init(struct pcmcia_socket *s)
{
struct socket_data *data;
- data = kmalloc(sizeof(struct socket_data), GFP_KERNEL);
+ data = kzalloc(sizeof(struct socket_data), GFP_KERNEL);
if (!data)
return -ENOMEM;
- memset(data, 0, sizeof(struct socket_data));
data->mem_db.next = &data->mem_db;
data->io_db.next = &data->io_db;
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-11-23 10:57:22 +0000