From: Keshava Munegowda <Keshava_mgowda@xxxxxx>
the disabling of clocks and freeing GPIO are changed
to fix the occurence of the crash of rmmod of ehci and ohci
drivers
Signed-off-by: Keshava Munegowda <keshava_mgowda@xxxxxx>
---
drivers/mfd/omap-usb-host.c | 24 ++++++++++++++++--------
1 files changed, 16 insertions(+), 8 deletions(-)
diff --git a/drivers/mfd/omap-usb-host.c b/drivers/mfd/omap-usb-host.c
index 3ab9ffa..cda0797 100644
--- a/drivers/mfd/omap-usb-host.c
+++ b/drivers/mfd/omap-usb-host.c
@@ -939,6 +939,7 @@ static void usbhs_disable(struct device *dev)
struct usbhs_hcd_omap *omap = dev_get_drvdata(dev);
struct usbhs_omap_platform_data *pdata = &omap->platdata;
unsigned long flags = 0;
+ unsigned int halt = 0;
unsigned long timeout;
dev_dbg(dev, "stopping TI HSUSB Controller\n");
@@ -994,24 +995,31 @@ static void usbhs_disable(struct device *dev)
dev_dbg(dev, "operation timed out\n");
}
- if (pdata->ehci_data->phy_reset) {
- if (gpio_is_valid(pdata->ehci_data->reset_gpio_port[0]))
- gpio_free(pdata->ehci_data->reset_gpio_port[0]);
-
- if (gpio_is_valid(pdata->ehci_data->reset_gpio_port[1]))
- gpio_free(pdata->ehci_data->reset_gpio_port[1]);
+ if (is_omap_usbhs_rev2(omap)) {
+ if (is_ehci_tll_mode(pdata->port_mode[0]))
+ clk_enable(omap->usbtll_p1_fck);
+ if (is_ehci_tll_mode(pdata->port_mode[1]))
+ clk_enable(omap->usbtll_p2_fck);
+ clk_disable(omap->utmi_p2_fck);
+ clk_disable(omap->utmi_p1_fck);
}
- clk_disable(omap->utmi_p2_fck);
- clk_disable(omap->utmi_p1_fck);
clk_disable(omap->usbtll_ick);
clk_disable(omap->usbtll_fck);
clk_disable(omap->usbhost_fs_fck);
clk_disable(omap->usbhost_hs_fck);
clk_disable(omap->usbhost_ick);
+ halt = 1;
end_disble:
spin_unlock_irqrestore(&omap->lock, flags);
+ if (halt && pdata->ehci_data->phy_reset) {
+ if (gpio_is_valid(pdata->ehci_data->reset_gpio_port[0]))
+ gpio_free(pdata->ehci_data->reset_gpio_port[0]);
+
+ if (gpio_is_valid(pdata->ehci_data->reset_gpio_port[1]))
+ gpio_free(pdata->ehci_data->reset_gpio_port[1]);
+ }
}
int omap_usbhs_enable(struct device *dev)
--
1.6.0.4
--
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