Re: [PATCH 1/8 v2] staging/comedi: Add macro for registering a comedi PCMCIA driver

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On 2013-01-14 21:00, Peter Huewe wrote:
This patch introduces a new macro 'module_comedi_pcmcia_driver'
for comedi PCMCIA drivers which do not do anything special in module
init/exit. This eliminates a lot of boilerplate.

Adapted from 'module_comedi_pci_driver'

Signed-off-by: Peter Huewe <peterhuewe@xxxxxx>
---
v2:
Removed unnecessary stuff. Thanks Hartley&Ian

This looks (and builds with and without PCMCIA support) fine.  Thanks!

Signed-off-by: Ian Abbott <abbotti@xxxxxxxxx>
(all 8 patches)


  drivers/staging/comedi/comedidev.h |   21 +++++++++++++++++++++
  drivers/staging/comedi/drivers.c   |   32 ++++++++++++++++++++++++++++++++
  2 files changed, 53 insertions(+), 0 deletions(-)

diff --git a/drivers/staging/comedi/comedidev.h b/drivers/staging/comedi/comedidev.h
index 34a85d3..d0248ed 100644
--- a/drivers/staging/comedi/comedidev.h
+++ b/drivers/staging/comedi/comedidev.h
@@ -316,6 +316,27 @@ void comedi_pci_driver_unregister(struct comedi_driver *, struct pci_driver *);
  	module_driver(__comedi_driver, comedi_pci_driver_register, \
  			comedi_pci_driver_unregister, &(__pci_driver))

+struct pcmcia_driver;
+
+int comedi_pcmcia_driver_register(struct comedi_driver *,
+					struct pcmcia_driver *);
+void comedi_pcmcia_driver_unregister(struct comedi_driver *,
+					struct pcmcia_driver *);
+
+/**
+ * module_comedi_pcmcia_driver() - Helper macro for registering a comedi PCMCIA driver
+ * @__comedi_driver: comedi_driver struct
+ * @__pcmcia_driver: pcmcia_driver struct
+ *
+ * Helper macro for comedi PCMCIA drivers which do not do anything special
+ * in module init/exit. This eliminates a lot of boilerplate. Each
+ * module may only use this macro once, and calling it replaces
+ * module_init() and module_exit()
+ */
+#define module_comedi_pcmcia_driver(__comedi_driver, __pcmcia_driver) \
+	module_driver(__comedi_driver, comedi_pcmcia_driver_register, \
+			comedi_pcmcia_driver_unregister, &(__pcmcia_driver))
+
  struct usb_driver;

  int comedi_usb_driver_register(struct comedi_driver *, struct usb_driver *);
diff --git a/drivers/staging/comedi/drivers.c b/drivers/staging/comedi/drivers.c
index b67a0c9..bd9c678 100644
--- a/drivers/staging/comedi/drivers.c
+++ b/drivers/staging/comedi/drivers.c
@@ -24,6 +24,8 @@
  #include <linux/device.h>
  #include <linux/module.h>
  #include <linux/pci.h>
+#include <pcmcia/cistpl.h>
+#include <pcmcia/ds.h>
  #include <linux/usb.h>
  #include <linux/errno.h>
  #include <linux/kconfig.h>
@@ -954,6 +956,36 @@ void comedi_pci_driver_unregister(struct comedi_driver *comedi_driver,
  }
  EXPORT_SYMBOL_GPL(comedi_pci_driver_unregister);

+#if IS_ENABLED(CONFIG_PCMCIA)
+int comedi_pcmcia_driver_register(struct comedi_driver *comedi_driver,
+		struct pcmcia_driver *pcmcia_driver)
+{
+	int ret;
+
+	ret = comedi_driver_register(comedi_driver);
+	if (ret < 0)
+		return ret;
+
+	ret = pcmcia_register_driver(pcmcia_driver);
+	if (ret < 0) {
+		comedi_driver_unregister(comedi_driver);
+		return ret;
+	}
+
+	return 0;
+}
+EXPORT_SYMBOL_GPL(comedi_pcmcia_driver_register);
+
+void comedi_pcmcia_driver_unregister(struct comedi_driver *comedi_driver,
+		struct pcmcia_driver *pcmcia_driver)
+{
+	pcmcia_unregister_driver(pcmcia_driver);
+	comedi_driver_unregister(comedi_driver);
+}
+EXPORT_SYMBOL_GPL(comedi_pcmcia_driver_unregister);
+
+#endif
+
  #if IS_ENABLED(CONFIG_USB)

  int comedi_usb_driver_register(struct comedi_driver *comedi_driver,



--
-=( Ian Abbott @ MEV Ltd.    E-mail: <abbotti@xxxxxxxxx>        )=-
-=( Tel: +44 (0)161 477 1898   FAX: +44 (0)161 718 3587         )=-
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