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path: root/drivers/uwb/reset.c
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Diffstat (limited to 'drivers/uwb/reset.c')
-rw-r--r--drivers/uwb/reset.c47
1 files changed, 37 insertions, 10 deletions
diff --git a/drivers/uwb/reset.c b/drivers/uwb/reset.c
index 8de856fa795..70f8050221f 100644
--- a/drivers/uwb/reset.c
+++ b/drivers/uwb/reset.c
@@ -32,8 +32,6 @@
32#include <linux/err.h> 32#include <linux/err.h>
33 33
34#include "uwb-internal.h" 34#include "uwb-internal.h"
35#define D_LOCAL 0
36#include <linux/uwb/debug.h>
37 35
38/** 36/**
39 * Command result codes (WUSB1.0[T8-69]) 37 * Command result codes (WUSB1.0[T8-69])
@@ -323,17 +321,16 @@ int uwbd_msg_handle_reset(struct uwb_event *evt)
323 struct uwb_rc *rc = evt->rc; 321 struct uwb_rc *rc = evt->rc;
324 int ret; 322 int ret;
325 323
326 /* Need to prevent the RC hardware module going away while in
327 the rc->reset() call. */
328 if (!try_module_get(rc->owner))
329 return 0;
330
331 dev_info(&rc->uwb_dev.dev, "resetting radio controller\n"); 324 dev_info(&rc->uwb_dev.dev, "resetting radio controller\n");
332 ret = rc->reset(rc); 325 ret = rc->reset(rc);
333 if (ret) 326 if (ret) {
334 dev_err(&rc->uwb_dev.dev, "failed to reset hardware: %d\n", ret); 327 dev_err(&rc->uwb_dev.dev, "failed to reset hardware: %d\n", ret);
335 328 goto error;
336 module_put(rc->owner); 329 }
330 return 0;
331error:
332 /* Nothing can be done except try the reset again. */
333 uwb_rc_reset_all(rc);
337 return ret; 334 return ret;
338} 335}
339 336
@@ -360,3 +357,33 @@ void uwb_rc_reset_all(struct uwb_rc *rc)
360 uwbd_event_queue(evt); 357 uwbd_event_queue(evt);
361} 358}
362EXPORT_SYMBOL_GPL(uwb_rc_reset_all); 359EXPORT_SYMBOL_GPL(uwb_rc_reset_all);
360
361void uwb_rc_pre_reset(struct uwb_rc *rc)
362{
363 rc->stop(rc);
364 uwbd_flush(rc);
365
366 uwb_radio_reset_state(rc);
367 uwb_rsv_remove_all(rc);
368}
369EXPORT_SYMBOL_GPL(uwb_rc_pre_reset);
370
371void uwb_rc_post_reset(struct uwb_rc *rc)
372{
373 int ret;
374
375 ret = rc->start(rc);
376 if (ret)
377 goto error;
378 ret = uwb_rc_mac_addr_set(rc, &rc->uwb_dev.mac_addr);
379 if (ret)
380 goto error;
381 ret = uwb_rc_dev_addr_set(rc, &rc->uwb_dev.dev_addr);
382 if (ret)
383 goto error;
384 return;
385error:
386 /* Nothing can be done except try the reset again. */
387 uwb_rc_reset_all(rc);
388}
389EXPORT_SYMBOL_GPL(uwb_rc_post_reset);