pcmcia: rework the irq_req_t typedef

Most of the irq_req_t typedef'd struct can be re-worked quite
easily:

(1) IRQInfo2 was unused in any case, so drop it.

(2) IRQInfo1 was used write-only, so drop it.

(3) Instance (private data to be passed to the IRQ handler):
	Most PCMCIA drivers using pcmcia_request_irq() to actually
	register an IRQ handler set the "dev_id" to the same pointer
	as the "priv" pointer in struct pcmcia_device. Modify the two
	exceptions (ipwireless, ibmtr_cs) to also work this waym and
	set the IRQ handler's "dev_id" to p_dev->priv unconditionally.

(4) Handler is to be of type irq_handler_t.

(5) Handler != NULL already tells whether an IRQ handler is present.
	Therefore, we do not need the IRQ_HANDLER_PRESENT flag in
	irq_req_t.Attributes.

CC: netdev@vger.kernel.org
CC: linux-bluetooth@vger.kernel.org
CC: linux-ide@vger.kernel.org
CC: linux-wireless@vger.kernel.org
CC: linux-scsi@vger.kernel.org
CC: alsa-devel@alsa-project.org
CC: Jaroslav Kysela <perex@perex.cz>
CC: Jiri Kosina <jkosina@suse.cz>
CC: Karsten Keil <isdn@linux-pingi.de>
for the Bluetooth parts: Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>

1 files changed, 8 insertions, 6 deletions

diff --git a/include/pcmcia/cs.h b/include/pcmcia/cs.h
index 904468a191ef..afc2bfb9e917 100644
--- a/include/pcmcia/cs.h
+++ b/include/pcmcia/cs.h
@@ -15,6 +15,10 @@
 #ifndef _LINUX_CS_H
 #define _LINUX_CS_H
 
+#ifdef __KERNEL__
+#include <linux/interrupt.h>
+#endif
+
 /* For AccessConfigurationRegister */
 typedef struct conf_reg_t {
     u_char      Function;
@@ -111,11 +115,9 @@ typedef struct io_req_t {
 
 /* For RequestIRQ and ReleaseIRQ */
 typedef struct irq_req_t {
-    u_int       Attributes;
-    u_int       AssignedIRQ;
-    u_int       IRQInfo1, IRQInfo2; /* IRQInfo2 is ignored */
-    void        *Handler;
-    void        *Instance;
+        u_int           Attributes;
+        u_int           AssignedIRQ;
+        irq_handler_t   Handler;
 } irq_req_t;
 
 /* Attributes for RequestIRQ and ReleaseIRQ */
@@ -125,7 +127,7 @@ typedef struct irq_req_t {
 #define IRQ_TYPE_DYNAMIC_SHARING        0x02
 #define IRQ_FORCED_PULSE                0x04
 #define IRQ_FIRST_SHARED                0x08
-#define IRQ_HANDLE_PRESENT              0x10
+//#define IRQ_HANDLE_PRESENT            0x10
 #define IRQ_PULSE_ALLOCATED             0x100
 
 /* Bits in IRQInfo1 field */