From: Hao Wu <hao.wu@xxxxxxxxx>
Subject: [PATCH] USB OTG Langwell: Fix missing init_timer and add pointer check in timer init.
This patch added missed init_timer function for kernel timer of stata machine.
and add pointer check for timer kmalloc.
modified: drivers/usb/otg/langwell_otg.c
Signed-off-by: Hao Wu <hao.wu@xxxxxxxxx>
Signed-off-by: Alan Cox <alan@xxxxxxxxxxxxxxx>
---
drivers/usb/otg/langwell_otg.c | 4 ++++
1 files changed, 4 insertions(+), 0 deletions(-)
diff --git a/drivers/usb/otg/langwell_otg.c b/drivers/usb/otg/langwell_otg.c
index 83d7941..4378c64 100644
--- a/drivers/usb/otg/langwell_otg.c
+++ b/drivers/usb/otg/langwell_otg.c
@@ -122,6 +122,9 @@ static inline struct langwell_otg_timer *otg_timer_initializer
{
struct langwell_otg_timer *timer;
timer = kmalloc(sizeof(struct langwell_otg_timer), GFP_KERNEL);
+ if (timer == NULL)
+ return timer;
+
timer->function = function;
timer->expires = expires;
timer->data = data;
@@ -2018,6 +2021,7 @@ static int langwell_otg_probe(struct pci_dev *pdev,
goto err;
}
+ init_timer(&langwell->hsm_timer);
if (request_irq(pdev->irq, otg_irq, IRQF_SHARED,
driver_name, langwell) != 0) {
dev_dbg(&pdev->dev, "request interrupt %d failed\n", pdev->irq);
--
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