Signed-off-by: Richard Zhao <richard.zhao@xxxxxxxxxxxxx>
---
drivers/usb/chipidea/core.c | 20 ++++++++++++++++++--
1 files changed, 18 insertions(+), 2 deletions(-)
diff --git a/drivers/usb/chipidea/core.c b/drivers/usb/chipidea/core.c
index d645396..767ccf7 100644
--- a/drivers/usb/chipidea/core.c
+++ b/drivers/usb/chipidea/core.c
@@ -332,6 +332,23 @@ static irqreturn_t ci_irq(int irq, void *data)
return ci->role == CI_ROLE_END ? ret : ci_role(ci)->irq(ci);
}
+static DEFINE_SPINLOCK(dev_id_lock);
+static int dev_id;
+
+static int ci_get_id(void)
+{
+ unsigned long flags;
+ int id;
+
+ spin_lock_irqsave(&dev_id_lock, flags);
+ id = dev_id++;
+ if (dev_id < 0)
+ dev_id = 0;
+ spin_unlock_irqrestore(&dev_id_lock, flags);
+
+ return id;
+}
+
struct platform_device *ci13xxx_add_device(struct device *dev,
struct resource *res, int nres,
struct ci13xxx_platform_data *platdata)
@@ -339,8 +356,7 @@ struct platform_device *ci13xxx_add_device(struct device *dev,
struct platform_device *pdev;
int ret;
- /* FIXME: find a way to choose id */
- pdev = platform_device_alloc("ci_hdrc", -1);
+ pdev = platform_device_alloc("ci_hdrc", ci_get_id());
if (!pdev)
return ERR_PTR(-ENOMEM);
--
1.7.5.4
--
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