On Thu, Jul 11, 2013 at 8:18 PM, Sergei Shtylyov
<sergei.shtylyov@xxxxxxxxxxxxxxxxxx> wrote:
> Hello.
>
>
> On 11-07-2013 13:05, Ming Lei wrote:
>
>> Complete() will be run with interrupt enabled, so change to
>> spin_lock_irqsave().
>
>
>> Cc: Juergen Stuber <starblue@xxxxxxxxxxxxxxxxxxxxx>
>> Signed-off-by: Ming Lei <ming.lei@xxxxxxxxxxxxx>
>> ---
>> drivers/usb/misc/legousbtower.c | 5 +++--
>> 1 file changed, 3 insertions(+), 2 deletions(-)
>
>
>> diff --git a/drivers/usb/misc/legousbtower.c
>> b/drivers/usb/misc/legousbtower.c
>> index 8089479..4044989 100644
>> --- a/drivers/usb/misc/legousbtower.c
>> +++ b/drivers/usb/misc/legousbtower.c
>> @@ -771,6 +771,7 @@ static void tower_interrupt_in_callback (struct urb
>> *urb)
>> struct lego_usb_tower *dev = urb->context;
>> int status = urb->status;
>> int retval;
>> + unsigned long flags;
>>
>> dbg(4, "%s: enter, status %d", __func__, status);
>>
>> @@ -788,7 +789,7 @@ static void tower_interrupt_in_callback (struct urb
>> *urb)
>> }
>>
>> if (urb->actual_length > 0) {
>> - spin_lock (&dev->read_buffer_lock);
>> + spin_lock_irqsave (&dev->read_buffer_lock, flags);
>> if (dev->read_buffer_length + urb->actual_length <
>> read_buffer_size) {
>> memcpy (dev->read_buffer +
>> dev->read_buffer_length,
>> dev->interrupt_in_buffer,
>> @@ -799,7 +800,7 @@ static void tower_interrupt_in_callback (struct urb
>> *urb)
>> } else {
>> printk(KERN_WARNING "%s: read_buffer overflow, %d
>> bytes dropped", __func__, urb->actual_length);
>> }
>> - spin_unlock (&dev->read_buffer_lock);
>> + spin_unlock_irqrestore (&dev->read_buffer_lock, flags);
>> }
>
>
> I don't think this patch passes checkpatch.pl.
No errors reported from checkpatch.pl, only warnings which isn't introduced
by this patch.
Thanks,
--
Ming Lei
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