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path: root/drivers/spi/spi_butterfly.c
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Diffstat (limited to 'drivers/spi/spi_butterfly.c')
-rw-r--r--drivers/spi/spi_butterfly.c21
1 files changed, 4 insertions, 17 deletions
diff --git a/drivers/spi/spi_butterfly.c b/drivers/spi/spi_butterfly.c
index 312987a03210..574d0fae4c59 100644
--- a/drivers/spi/spi_butterfly.c
+++ b/drivers/spi/spi_butterfly.c
@@ -20,7 +20,7 @@
20#include <linux/kernel.h> 20#include <linux/kernel.h>
21#include <linux/init.h> 21#include <linux/init.h>
22#include <linux/delay.h> 22#include <linux/delay.h>
23#include <linux/platform_device.h> 23#include <linux/device.h>
24#include <linux/parport.h> 24#include <linux/parport.h>
25 25
26#include <linux/sched.h> 26#include <linux/sched.h>
@@ -237,24 +237,16 @@ static void butterfly_attach(struct parport *p)
237 int status; 237 int status;
238 struct butterfly *pp; 238 struct butterfly *pp;
239 struct spi_master *master; 239 struct spi_master *master;
240 struct platform_device *pdev; 240 struct device *dev = p->physport->dev;
241 241
242 if (butterfly) 242 if (butterfly || !dev)
243 return; 243 return;
244 244
245 /* REVISIT: this just _assumes_ a butterfly is there ... no probe, 245 /* REVISIT: this just _assumes_ a butterfly is there ... no probe,
246 * and no way to be selective about what it binds to. 246 * and no way to be selective about what it binds to.
247 */ 247 */
248 248
249 /* FIXME where should master->cdev.dev come from? 249 master = spi_alloc_master(dev, sizeof *pp);
250 * e.g. /sys/bus/pnp0/00:0b, some PCI thing, etc
251 * setting up a platform device like this is an ugly kluge...
252 */
253 pdev = platform_device_register_simple("butterfly", -1, NULL, 0);
254 if (IS_ERR(pdev))
255 return;
256
257 master = spi_alloc_master(&pdev->dev, sizeof *pp);
258 if (!master) { 250 if (!master) {
259 status = -ENOMEM; 251 status = -ENOMEM;
260 goto done; 252 goto done;
@@ -366,14 +358,12 @@ clean1:
366clean0: 358clean0:
367 (void) spi_master_put(pp->bitbang.master); 359 (void) spi_master_put(pp->bitbang.master);
368done: 360done:
369 platform_device_unregister(pdev);
370 pr_debug("%s: butterfly probe, fail %d\n", p->name, status); 361 pr_debug("%s: butterfly probe, fail %d\n", p->name, status);
371} 362}
372 363
373static void butterfly_detach(struct parport *p) 364static void butterfly_detach(struct parport *p)
374{ 365{
375 struct butterfly *pp; 366 struct butterfly *pp;
376 struct platform_device *pdev;
377 int status; 367 int status;
378 368
379 /* FIXME this global is ugly ... but, how to quickly get from 369 /* FIXME this global is ugly ... but, how to quickly get from
@@ -386,7 +376,6 @@ static void butterfly_detach(struct parport *p)
386 butterfly = NULL; 376 butterfly = NULL;
387 377
388 /* stop() unregisters child devices too */ 378 /* stop() unregisters child devices too */
389 pdev = to_platform_device(pp->bitbang.master->cdev.dev);
390 status = spi_bitbang_stop(&pp->bitbang); 379 status = spi_bitbang_stop(&pp->bitbang);
391 380
392 /* turn off VCC */ 381 /* turn off VCC */
@@ -397,8 +386,6 @@ static void butterfly_detach(struct parport *p)
397 parport_unregister_device(pp->pd); 386 parport_unregister_device(pp->pd);
398 387
399 (void) spi_master_put(pp->bitbang.master); 388 (void) spi_master_put(pp->bitbang.master);
400
401 platform_device_unregister(pdev);
402} 389}
403 390
404static struct parport_driver butterfly_driver = { 391static struct parport_driver butterfly_driver = {