pcmcia: carve out ioctl adjust function to pcmcia_ioctl

Let pcmcia_ioctl interact with rsrc_nonstatic using functions which
rsrc_nonstatic.c has to use anyway.

Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>

1 files changed, 88 insertions, 2 deletions

diff --git a/drivers/pcmcia/pcmcia_ioctl.c b/drivers/pcmcia/pcmcia_ioctl.c
index 5f186abca10..758ece8dc36 100644
--- a/drivers/pcmcia/pcmcia_ioctl.c
+++ b/drivers/pcmcia/pcmcia_ioctl.c
@@ -138,6 +138,94 @@ static int proc_read_drivers(char *buf, char **start, off_t pos,
 }
 #endif
 
+
+#ifdef CONFIG_PCMCIA_PROBE
+
+static int adjust_irq(struct pcmcia_socket *s, adjust_t *adj)
+{
+	int irq;
+	u32 mask;
+
+	irq = adj->resource.irq.IRQ;
+	if ((irq < 0) || (irq > 15))
+		return CS_BAD_IRQ;
+
+	if (adj->Action != REMOVE_MANAGED_RESOURCE)
+		return 0;
+
+	mask = 1 << irq;
+
+	if (!(s->irq_mask & mask))
+		return 0;
+
+	s->irq_mask &= ~mask;
+
+	return 0;
+}
+
+#else
+
+static inline int adjust_irq(struct pcmcia_socket *s, adjust_t *adj) {
+	return CS_SUCCESS;
+}
+
+#endif
+
+static int pcmcia_adjust_resource_info(adjust_t *adj)
+{
+	struct pcmcia_socket *s;
+	int ret = CS_UNSUPPORTED_FUNCTION;
+	unsigned long flags;
+
+	down_read(&pcmcia_socket_list_rwsem);
+	list_for_each_entry(s, &pcmcia_socket_list, socket_list) {
+
+		if (adj->Resource == RES_IRQ)
+			ret = adjust_irq(s, adj);
+
+		else if (s->resource_ops->add_io) {
+			unsigned long begin, end;
+
+			/* you can't use the old interface if the new
+			 * one was used before */
+			spin_lock_irqsave(&s->lock, flags);
+			if ((s->resource_setup_new) &&
+			    !(s->resource_setup_old)) {
+				spin_unlock_irqrestore(&s->lock, flags);
+				continue;
+			} else if (!(s->resource_setup_old))
+				s->resource_setup_old = 1;
+			spin_unlock_irqrestore(&s->lock, flags);
+
+			switch (adj->Resource) {
+			case RES_MEMORY_RANGE:
+				begin = adj->resource.memory.Base;
+				end = adj->resource.memory.Base + adj->resource.memory.Size - 1;
+				if (s->resource_ops->add_mem)
+					ret =s->resource_ops->add_mem(s, adj->Action, begin, end);
+			case RES_IO_RANGE:
+				begin = adj->resource.io.BasePort;
+				end = adj->resource.io.BasePort + adj->resource.io.NumPorts - 1;
+				if (s->resource_ops->add_io)
+					ret = s->resource_ops->add_io(s, adj->Action, begin, end);
+			}
+			if (!ret) {
+				/* as there's no way we know this is the
+				 * last call to adjust_resource_info, we
+				 * always need to assume this is the latest
+				 * one... */
+				spin_lock_irqsave(&s->lock, flags);
+				s->resource_setup_done = 1;
+				spin_unlock_irqrestore(&s->lock, flags);
+			}
+		}
+	}
+	up_read(&pcmcia_socket_list_rwsem);
+
+	return (ret);
+}
+
+
 /*======================================================================
 
     These manage a ring buffer of events pending for one user process
@@ -546,8 +634,6 @@ static u_int ds_poll(struct file *file, poll_table *wait)
 
 /*====================================================================*/
 
-extern int pcmcia_adjust_resource_info(adjust_t *adj);
-
 static int ds_ioctl(struct inode * inode, struct file * file,
 		    u_int cmd, u_long arg)
 {