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-rw-r--r--drivers/usb/musb/musb_core.c40
-rw-r--r--drivers/usb/musb/musb_host.c2
-rw-r--r--drivers/usb/musb/omap2430.c31
3 files changed, 52 insertions, 21 deletions
diff --git a/drivers/usb/musb/musb_core.c b/drivers/usb/musb/musb_core.c
index 0f8b82918a4..66aaccf0449 100644
--- a/drivers/usb/musb/musb_core.c
+++ b/drivers/usb/musb/musb_core.c
@@ -137,6 +137,9 @@ static int musb_ulpi_read(struct usb_phy *phy, u32 offset)
int i = 0;
u8 r;
u8 power;
+ int ret;
+
+ pm_runtime_get_sync(phy->io_dev);
/* Make sure the transceiver is not in low power mode */
power = musb_readb(addr, MUSB_POWER);
@@ -154,15 +157,22 @@ static int musb_ulpi_read(struct usb_phy *phy, u32 offset)
while (!(musb_readb(addr, MUSB_ULPI_REG_CONTROL)
& MUSB_ULPI_REG_CMPLT)) {
i++;
- if (i == 10000)
- return -ETIMEDOUT;
+ if (i == 10000) {
+ ret = -ETIMEDOUT;
+ goto out;
+ }
}
r = musb_readb(addr, MUSB_ULPI_REG_CONTROL);
r &= ~MUSB_ULPI_REG_CMPLT;
musb_writeb(addr, MUSB_ULPI_REG_CONTROL, r);
- return musb_readb(addr, MUSB_ULPI_REG_DATA);
+ ret = musb_readb(addr, MUSB_ULPI_REG_DATA);
+
+out:
+ pm_runtime_put(phy->io_dev);
+
+ return ret;
}
static int musb_ulpi_write(struct usb_phy *phy, u32 offset, u32 data)
@@ -171,6 +181,9 @@ static int musb_ulpi_write(struct usb_phy *phy, u32 offset, u32 data)
int i = 0;
u8 r = 0;
u8 power;
+ int ret = 0;
+
+ pm_runtime_get_sync(phy->io_dev);
/* Make sure the transceiver is not in low power mode */
power = musb_readb(addr, MUSB_POWER);
@@ -184,15 +197,20 @@ static int musb_ulpi_write(struct usb_phy *phy, u32 offset, u32 data)
while (!(musb_readb(addr, MUSB_ULPI_REG_CONTROL)
& MUSB_ULPI_REG_CMPLT)) {
i++;
- if (i == 10000)
- return -ETIMEDOUT;
+ if (i == 10000) {
+ ret = -ETIMEDOUT;
+ goto out;
+ }
}
r = musb_readb(addr, MUSB_ULPI_REG_CONTROL);
r &= ~MUSB_ULPI_REG_CMPLT;
musb_writeb(addr, MUSB_ULPI_REG_CONTROL, r);
- return 0;
+out:
+ pm_runtime_put(phy->io_dev);
+
+ return ret;
}
#else
#define musb_ulpi_read NULL
@@ -1904,14 +1922,17 @@ musb_init_controller(struct device *dev, int nIrq, void __iomem *ctrl)
if (!musb->isr) {
status = -ENODEV;
- goto fail3;
+ goto fail2;
}
if (!musb->xceiv->io_ops) {
+ musb->xceiv->io_dev = musb->controller;
musb->xceiv->io_priv = musb->mregs;
musb->xceiv->io_ops = &musb_ulpi_access;
}
+ pm_runtime_get_sync(musb->controller);
+
#ifndef CONFIG_MUSB_PIO_ONLY
if (use_dma && dev->dma_mask) {
struct dma_controller *c;
@@ -2023,6 +2044,8 @@ musb_init_controller(struct device *dev, int nIrq, void __iomem *ctrl)
goto fail5;
#endif
+ pm_runtime_put(musb->controller);
+
dev_info(dev, "USB %s mode controller at %p using %s, IRQ %d\n",
({char *s;
switch (musb->board_mode) {
@@ -2047,6 +2070,9 @@ fail4:
musb_gadget_cleanup(musb);
fail3:
+ pm_runtime_put_sync(musb->controller);
+
+fail2:
if (musb->irq_wake)
device_init_wakeup(dev, 0);
musb_platform_exit(musb);
diff --git a/drivers/usb/musb/musb_host.c b/drivers/usb/musb/musb_host.c
index 79cb0af779f..ef8d744800a 100644
--- a/drivers/usb/musb/musb_host.c
+++ b/drivers/usb/musb/musb_host.c
@@ -2098,7 +2098,7 @@ static int musb_cleanup_urb(struct urb *urb, struct musb_qh *qh)
}
/* turn off DMA requests, discard state, stop polling ... */
- if (is_in) {
+ if (ep->epnum && is_in) {
/* giveback saves bulk toggle */
csr = musb_h_flush_rxfifo(ep, 0);
diff --git a/drivers/usb/musb/omap2430.c b/drivers/usb/musb/omap2430.c
index 2ae0bb30999..c7785e81254 100644
--- a/drivers/usb/musb/omap2430.c
+++ b/drivers/usb/musb/omap2430.c
@@ -282,7 +282,8 @@ static void musb_otg_notifier_work(struct work_struct *data_notifier_work)
static int omap2430_musb_init(struct musb *musb)
{
- u32 l, status = 0;
+ u32 l;
+ int status = 0;
struct device *dev = musb->controller;
struct musb_hdrc_platform_data *plat = dev->platform_data;
struct omap_musb_board_data *data = plat->board_data;
@@ -301,7 +302,7 @@ static int omap2430_musb_init(struct musb *musb)
status = pm_runtime_get_sync(dev);
if (status < 0) {
- dev_err(dev, "pm_runtime_get_sync FAILED");
+ dev_err(dev, "pm_runtime_get_sync FAILED %d\n", status);
goto err1;
}
@@ -333,6 +334,7 @@ static int omap2430_musb_init(struct musb *musb)
setup_timer(&musb_idle_timer, musb_do_idle, (unsigned long) musb);
+ pm_runtime_put_noidle(musb->controller);
return 0;
err1:
@@ -452,14 +454,14 @@ static int __devinit omap2430_probe(struct platform_device *pdev)
goto err2;
}
+ pm_runtime_enable(&pdev->dev);
+
ret = platform_device_add(musb);
if (ret) {
dev_err(&pdev->dev, "failed to register musb device\n");
goto err2;
}
- pm_runtime_enable(&pdev->dev);
-
return 0;
err2:
@@ -478,7 +480,6 @@ static int __devexit omap2430_remove(struct platform_device *pdev)
platform_device_del(glue->musb);
platform_device_put(glue->musb);
- pm_runtime_put(&pdev->dev);
kfree(glue);
return 0;
@@ -491,11 +492,13 @@ static int omap2430_runtime_suspend(struct device *dev)
struct omap2430_glue *glue = dev_get_drvdata(dev);
struct musb *musb = glue_to_musb(glue);
- musb->context.otg_interfsel = musb_readl(musb->mregs,
- OTG_INTERFSEL);
+ if (musb) {
+ musb->context.otg_interfsel = musb_readl(musb->mregs,
+ OTG_INTERFSEL);
- omap2430_low_level_exit(musb);
- usb_phy_set_suspend(musb->xceiv, 1);
+ omap2430_low_level_exit(musb);
+ usb_phy_set_suspend(musb->xceiv, 1);
+ }
return 0;
}
@@ -505,11 +508,13 @@ static int omap2430_runtime_resume(struct device *dev)
struct omap2430_glue *glue = dev_get_drvdata(dev);
struct musb *musb = glue_to_musb(glue);
- omap2430_low_level_init(musb);
- musb_writel(musb->mregs, OTG_INTERFSEL,
- musb->context.otg_interfsel);
+ if (musb) {
+ omap2430_low_level_init(musb);
+ musb_writel(musb->mregs, OTG_INTERFSEL,
+ musb->context.otg_interfsel);
- usb_phy_set_suspend(musb->xceiv, 0);
+ usb_phy_set_suspend(musb->xceiv, 0);
+ }
return 0;
}
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-12-19 10:19:20 +0000