staging: comedi: ni_daq_700: refactor the pcmcia attach/detach

Move the pcmcia_disable_device() call where needed in the
pcmcia attach/detach and delete the dio700_release() function.

Move the logic of dio700_config() directly into the attach
function and properly return an error code when the config
fails.

Only set the pcmcia_cur_dev, used by the comedi_driver, if
the pcmcia attach is successful. Also, make sure to NULL it
in the detach.

Remove all the kernel messages in the pcmcia support code. They
are just added noise.

Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Cc: Ian Abbott <abbotti@mev.co.uk>
Cc: Frank Mori Hess <fmhess@users.sourceforge.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/staging/comedi/drivers/ni_daq_700.c b/drivers/staging/comedi/drivers/ni_daq_700.c
index c57300f..83016b4 100644 (file)
--- a/drivers/staging/comedi/drivers/ni_daq_700.c
+++ b/drivers/staging/comedi/drivers/ni_daq_700.c
@@ -164,13 +164,6 @@ static struct comedi_driver driver_dio700 = {
        .offset         = sizeof(struct dio700_board),
 };
 
-static void dio700_release(struct pcmcia_device *link)
-{
-       dev_dbg(&link->dev, "%s\n", __func__);
-
-       pcmcia_disable_device(link);
-}
-
 static int dio700_pcmcia_config_loop(struct pcmcia_device *p_dev,
                                void *priv_data)
 {
@@ -180,50 +173,36 @@ static int dio700_pcmcia_config_loop(struct pcmcia_device *p_dev,
        return pcmcia_request_io(p_dev);
 }
 
-static void dio700_config(struct pcmcia_device *link)
+static int dio700_cs_attach(struct pcmcia_device *link)
 {
        int ret;
 
-       dev_dbg(&link->dev, "%s\n", __func__);
-
        link->config_flags |= CONF_ENABLE_IRQ | CONF_AUTO_AUDIO |
                CONF_AUTO_SET_IO;
 
        ret = pcmcia_loop_config(link, dio700_pcmcia_config_loop, NULL);
-       if (ret) {
-               dev_warn(&link->dev, "no configuration found\n");
+       if (ret)
                goto failed;
-       }
 
        if (!link->irq)
                goto failed;
 
        ret = pcmcia_enable_device(link);
-       if (ret != 0)
+       if (ret)
                goto failed;
 
-       return;
-
-failed:
-       dev_dbg(&link->dev, "%s failed\n", __func__);
-       dio700_release(link);
-
-}
-
-static int dio700_cs_attach(struct pcmcia_device *link)
-{
-       dev_dbg(&link->dev, "%s\n", __func__);
-
        pcmcia_cur_dev = link;
-
-       dio700_config(link);
-
        return 0;
+
+failed:
+       pcmcia_disable_device(link);
+       return ret;
 }
 
 static void dio700_cs_detach(struct pcmcia_device *link)
 {
-       dio700_release(link);
+       pcmcia_disable_device(link);
+       pcmcia_cur_dev = NULL;
 }
 
 static const struct pcmcia_device_id dio700_cs_ids[] = {