pcmcia: remove long deprecated pcmcia_request_exclusive_irq() function

This function was created as a deprecated fallback case back in 2010 by
commit eb14120f ("pcmcia: re-work pcmcia_request_irq()") for legacy
cases.

Actual in-kernel users haven't been around for a long while.  The last
in-kernel user was apparently removed four years ago by commit
5f5316fc ("am2150: Update nmclan_cs.c to use update PCMCIA API").

Just remove it entirely.
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

Documentation/pcmcia/driver-changes.txt

@@ -46,9 +46,6 @@ This file details changes in 2.6 which affect PCMCIA card driver authors:
    - use pcmcia_request_irq(p_dev, handler_t); the PCMCIA core will
      clean up automatically on calls to pcmcia_disable_device() or
      device ejection.
-   - drivers still not capable of IRQF_SHARED (or not telling us so) may
-     use the deprecated pcmcia_request_exclusive_irq() for the time
-     being; they might receive a shared IRQ nonetheless.
 
 * no cs_error / CS_CHECK / CONFIG_PCMCIA_DEBUG (as of 2.6.33)
    Instead of the cs_error() callback or the CS_CHECK() macro, please use

drivers/pcmcia/pcmcia_resource.c

@@ -712,42 +712,6 @@ int __must_check pcmcia_request_irq(struct pcmcia_device *p_dev,
 EXPORT_SYMBOL(pcmcia_request_irq);
 
 
-/**
- * pcmcia_request_exclusive_irq() - attempt to request an exclusive IRQ first
- * @p_dev: the associated PCMCIA device
- * @handler: IRQ handler to register
- *
- * pcmcia_request_exclusive_irq() is a wrapper around request_irq() which
- * attempts first to request an exclusive IRQ. If it fails, it also accepts
- * a shared IRQ, but prints out a warning. PCMCIA drivers should allow for
- * IRQ sharing and either use request_irq directly (then they need to call
- * free_irq() themselves, too), or the pcmcia_request_irq() function.
- */
-int __must_check
-__pcmcia_request_exclusive_irq(struct pcmcia_device *p_dev,
-			irq_handler_t handler)
-{
-	int ret;
-
-	if (!p_dev->irq)
-		return -EINVAL;
-
-	ret = request_irq(p_dev->irq, handler, 0, p_dev->devname, p_dev->priv);
-	if (ret) {
-		ret = pcmcia_request_irq(p_dev, handler);
-		dev_warn(&p_dev->dev, "pcmcia: request for exclusive IRQ could not be fulfilled\n");
-		dev_warn(&p_dev->dev, "pcmcia: the driver needs updating to supported shared IRQ lines\n");
-	}
-	if (ret)
-		dev_info(&p_dev->dev, "request_irq() failed\n");
-	else
-		p_dev->_irq = 1;
-
-	return ret;
-} /* pcmcia_request_exclusive_irq */
-EXPORT_SYMBOL(__pcmcia_request_exclusive_irq);
-
-
 #ifdef CONFIG_PCMCIA_PROBE
 
 /* mask of IRQs already reserved by other cards, we should avoid using them */

include/pcmcia/ds.h

@@ -206,16 +206,6 @@ int pcmcia_write_config_byte(struct pcmcia_device *p_dev, off_t where, u8 val);
 /* device configuration */
 int pcmcia_request_io(struct pcmcia_device *p_dev);
 
-int __must_check
-__pcmcia_request_exclusive_irq(struct pcmcia_device *p_dev,
-				irq_handler_t handler);
-static inline __must_check __deprecated int
-pcmcia_request_exclusive_irq(struct pcmcia_device *p_dev,
-				irq_handler_t handler)
-{
-	return __pcmcia_request_exclusive_irq(p_dev, handler);
-}
-
 int __must_check pcmcia_request_irq(struct pcmcia_device *p_dev,
 				irq_handler_t handler);