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path: root/drivers/amba/bus.c
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-rw-r--r--drivers/amba/bus.c42
1 files changed, 1 insertions, 41 deletions
diff --git a/drivers/amba/bus.c b/drivers/amba/bus.c
index 01c2cf4efcd..cc273226dbd 100644
--- a/drivers/amba/bus.c
+++ b/drivers/amba/bus.c
@@ -247,8 +247,7 @@ static int amba_pm_restore(struct device *dev)
247/* 247/*
248 * Hooks to provide runtime PM of the pclk (bus clock). It is safe to 248 * Hooks to provide runtime PM of the pclk (bus clock). It is safe to
249 * enable/disable the bus clock at runtime PM suspend/resume as this 249 * enable/disable the bus clock at runtime PM suspend/resume as this
250 * does not result in loss of context. However, disabling vcore power 250 * does not result in loss of context.
251 * would do, so we leave that to the driver.
252 */ 251 */
253static int amba_pm_runtime_suspend(struct device *dev) 252static int amba_pm_runtime_suspend(struct device *dev)
254{ 253{
@@ -354,39 +353,6 @@ static void amba_put_disable_pclk(struct amba_device *pcdev)
354 clk_put(pclk); 353 clk_put(pclk);
355} 354}
356 355
357static int amba_get_enable_vcore(struct amba_device *pcdev)
358{
359 struct regulator *vcore = regulator_get(&pcdev->dev, "vcore");
360 int ret;
361
362 pcdev->vcore = vcore;
363
364 if (IS_ERR(vcore)) {
365 /* It is OK not to supply a vcore regulator */
366 if (PTR_ERR(vcore) == -ENODEV)
367 return 0;
368 return PTR_ERR(vcore);
369 }
370
371 ret = regulator_enable(vcore);
372 if (ret) {
373 regulator_put(vcore);
374 pcdev->vcore = ERR_PTR(-ENODEV);
375 }
376
377 return ret;
378}
379
380static void amba_put_disable_vcore(struct amba_device *pcdev)
381{
382 struct regulator *vcore = pcdev->vcore;
383
384 if (!IS_ERR(vcore)) {
385 regulator_disable(vcore);
386 regulator_put(vcore);
387 }
388}
389
390/* 356/*
391 * These are the device model conversion veneers; they convert the 357 * These are the device model conversion veneers; they convert the
392 * device model structures to our more specific structures. 358 * device model structures to our more specific structures.
@@ -399,10 +365,6 @@ static int amba_probe(struct device *dev)
399 int ret; 365 int ret;
400 366
401 do { 367 do {
402 ret = amba_get_enable_vcore(pcdev);
403 if (ret)
404 break;
405
406 ret = amba_get_enable_pclk(pcdev); 368 ret = amba_get_enable_pclk(pcdev);
407 if (ret) 369 if (ret)
408 break; 370 break;
@@ -420,7 +382,6 @@ static int amba_probe(struct device *dev)
420 pm_runtime_put_noidle(dev); 382 pm_runtime_put_noidle(dev);
421 383
422 amba_put_disable_pclk(pcdev); 384 amba_put_disable_pclk(pcdev);
423 amba_put_disable_vcore(pcdev);
424 } while (0); 385 } while (0);
425 386
426 return ret; 387 return ret;
@@ -442,7 +403,6 @@ static int amba_remove(struct device *dev)
442 pm_runtime_put_noidle(dev); 403 pm_runtime_put_noidle(dev);
443 404
444 amba_put_disable_pclk(pcdev); 405 amba_put_disable_pclk(pcdev);
445 amba_put_disable_vcore(pcdev);
446 406
447 return ret; 407 return ret;
448} 408}