David Brownell wrote:
> On Saturday 14 July 2007, Yoshihiro Shimoda wrote:
> > > Does the following patch behave, with all the locking test
> > > options in the kernel debug menu enabled?
> >
> > I applied this patch and I tested on following kernel debug
> > menu enabled.
> > - CONFIG_DEBUG_MUTEXES
> > - CONFIG_DEBUG_SPINLOCK
> > - CONFIG_DEBUG_LOCK_ALLOC
> > - CONFIG_DEBUG_SPINLOCK_SLEEP
> > - CONFIG_PROVE_LOCKING
> > When I tested CONFIG_DEBUG_LOCKDEP enabled, A kernel did not
> > boot at all in my development environment...
>
> Whoops! That needs fixing. :(
I try fixing this problem.
> > - spin_unlock(&ep->m66592->lock);
> > + spin_unlock(&m66592->lock);
> > m66592_queue(m66592->gadget.ep0, m66592->ep0_req, GFP_KERNEL);
> > - spin_lock(&ep->m66592->lock);
> > + spin_lock(&m66592->lock);
>
> Right; simpler *and* more correct.
>
> Here's the all-rolled-up patch ... if you sign off on the whole
> thing, then I expect it should go upstream ASAP.
I made the patch which fixed a problem pointed out in LKML.
- fixed memory leak
- change ep0_buf
- fixed byteswapping
Should I submit an email to LKML and linux-usb-devel mailing list
after having made a thing including all-rolled-up patch?
Thanks,
Y.Shimoda
---
drivers/usb/gadget/m66592-udc.c | 21 +++++++++++----------
drivers/usb/gadget/m66592-udc.h | 2 +-
2 files changed, 12 insertions(+), 11 deletions(-)
--- linux-2.6.org/drivers/usb/gadget/m66592-udc.c 2007-07-16
11:44:00.000000000 +0900
+++ linux-2.6/drivers/usb/gadget/m66592-udc.c 2007-07-16 12:36:41.000000000
+0900
@@ -384,7 +384,7 @@ static void m66592_ep_setting(struct m66
ep->pipectr = get_pipectr_addr(pipenum);
ep->pipenum = pipenum;
- ep->ep.maxpacket = desc->wMaxPacketSize;
+ ep->ep.maxpacket = le16_to_cpu(desc->wMaxPacketSize);
m66592->pipenum2ep[pipenum] = ep;
m66592->epaddr2ep[desc->bEndpointAddress&USB_ENDPOINT_NUMBER_MASK] = ep;
INIT_LIST_HEAD(&ep->queue);
@@ -461,7 +461,7 @@ static int alloc_pipe_config(struct m665
ep->type = info.type;
info.epnum = desc->bEndpointAddress & USB_ENDPOINT_NUMBER_MASK;
- info.maxpacket = desc->wMaxPacketSize;
+ info.maxpacket = le16_to_cpu(desc->wMaxPacketSize);
info.interval = desc->bInterval;
if (desc->bEndpointAddress & USB_ENDPOINT_DIR_MASK)
info.dir_in = 1;
@@ -922,6 +922,7 @@ __acquires(m66592->lock)
struct m66592_ep *ep;
u16 pid;
u16 status = 0;
+ u16 w_index = le16_to_cpu(ctrl->wIndex);
switch (ctrl->bRequestType & USB_RECIP_MASK) {
case USB_RECIP_DEVICE:
@@ -931,7 +932,7 @@ __acquires(m66592->lock)
status = 0;
break;
case USB_RECIP_ENDPOINT:
- ep = m66592->epaddr2ep[ctrl->wIndex&USB_ENDPOINT_NUMBER_MASK];
+ ep = m66592->epaddr2ep[w_index & USB_ENDPOINT_NUMBER_MASK];
pid = control_reg_get_pid(m66592, ep->pipenum);
if (pid == M66592_PID_STALL)
status = 1 << USB_ENDPOINT_HALT;
@@ -943,8 +944,8 @@ __acquires(m66592->lock)
return; /* exit */
}
- *m66592->ep0_buf = status;
- m66592->ep0_req->buf = m66592->ep0_buf;
+ m66592->ep0_data = cpu_to_le16(status);
+ m66592->ep0_req->buf = &m66592->ep0_data;
m66592->ep0_req->length = 2;
spin_unlock(&m66592->lock);
m66592_queue(m66592->gadget.ep0, m66592->ep0_req, GFP_KERNEL);
@@ -963,8 +964,9 @@ static void clear_feature(struct m66592
case USB_RECIP_ENDPOINT: {
struct m66592_ep *ep;
struct m66592_request *req;
+ u16 w_index = le16_to_cpu(ctrl->wIndex);
- ep = m66592->epaddr2ep[ctrl->wIndex&USB_ENDPOINT_NUMBER_MASK];
+ ep = m66592->epaddr2ep[w_index & USB_ENDPOINT_NUMBER_MASK];
pipe_stop(m66592, ep->pipenum);
control_reg_sqclr(m66592, ep->pipenum);
@@ -999,8 +1001,9 @@ static void set_feature(struct m66592 *m
break;
case USB_RECIP_ENDPOINT: {
struct m66592_ep *ep;
+ u16 w_index = le16_to_cpu(ctrl->wIndex);
- ep = m66592->epaddr2ep[ctrl->wIndex&USB_ENDPOINT_NUMBER_MASK];
+ ep = m66592->epaddr2ep[w_index & USB_ENDPOINT_NUMBER_MASK];
pipe_stall(m66592, ep->pipenum);
control_end(m66592, 1);
@@ -1480,6 +1483,7 @@ static int __exit m66592_remove(struct p
del_timer_sync(&m66592->timer);
iounmap(m66592->reg);
free_irq(platform_get_irq(pdev, 0), m66592);
+ m66592_free_request(&m66592->ep[0].ep, m66592->ep0_req);
kfree(m66592);
return 0;
}
@@ -1587,9 +1591,6 @@ static int __init m66592_probe(struct pl
if (m66592->ep0_req == NULL)
goto clean_up;
m66592->ep0_req->complete = nop_completion;
- m66592->ep0_buf = kmalloc(2, GFP_KERNEL);
- if (m66592->ep0_buf == NULL)
- goto clean_up;
init_controller(m66592);
--- linux-2.6.org/drivers/usb/gadget/m66592-udc.h 2007-07-16
11:44:01.000000000 +0900
+++ linux-2.6/drivers/usb/gadget/m66592-udc.h 2007-07-16 11:46:33.000000000
+0900
@@ -475,7 +475,7 @@ struct m66592 {
struct m66592_ep *epaddr2ep[16];
struct usb_request *ep0_req; /* for internal request */
- u16 *ep0_buf; /* for internal request */
+ u16 ep0_data; /* for internal request */
struct timer_list timer;
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