Commit graph

61 commits

Author SHA1 Message Date
Vitaly Kuzmichev
ac5d32d15c USB-CDC: Fix tx/rx_req memory leaks
Remove and fix needless and destructive operations with tx/rx_req.

1) 'req' in rx_complete is always not NULL and always equals to rx_req
2) Free allocated tx_req if rx_req allocation has failed
3) Do not zero out tx/rx_req in usb_eth_init, leave this for
eth_reset_config which will be called at the next use of usb0
4) Additional check in usb_eth_recv is not required

Signed-off-by: Vitaly Kuzmichev <vkuzmichev@mvista.com>
2010-10-13 12:07:58 +02:00
Vitaly Kuzmichev
6142e0ae0f USB-CDC: Fix coding style issues
Fixes most of checkpatch warnings and errors in USB gadget stack.

The most frequently encountered problems are:
1) "(foo*)", "foo * bar", "foo* bar"
2) C99 // comments
3) No spaces before/after/around '?', ':', '=', '==', ',', '&', '('
4) Spaces before '['
5) Spaces between function names and '('
6) Block braces in wrong places
7) Spaces before tabs
8) Macros with complex values not enclosed in parenthesis
9) Multiline comments start just after /*

Signed-off-by: Vitaly Kuzmichev <vkuzmichev@mvista.com>
2010-09-20 21:57:17 +02:00
Stefano Babic
a170f2c797 USB-CDC: called handle_interrupts inside usb_eth_send
The patch removes an endless loop  in the usb_eth_send
if the tx_complete is not called before going
in the loop. The driver interrupt routine is called
allowing the driver to check if the TX is completed.

Signed-off-by: Stefano Babic <sbabic@denx.de>
2010-09-20 21:57:17 +02:00
Stefano Babic
8046077219 USB-CDC: correct wrong alignment in ether.c
The buffer for the status request must be word aligned
because it is accessed with 32 bit pointer in the
eth_status_complete function.

Signed-off-by: Stefano Babic <sbabic@denx.de>
2010-09-20 21:57:17 +02:00
Vitaly Kuzmichev
d5292c1647 USB-CDC: ethernet error path potential oops fix
Fix potential oops on rare error path.
The patch is based on commit e7b13ec9235b9fded90f826ceeb8c34548631351
(done by David Brownell <david-b@pacbell.net>) from linux-2.6.git.

Description of the issue taken from linux kernel bugzilla:
(https://bugzilla.kernel.org/show_bug.cgi?id=9594)

The potential error can be tracked down as follows:

(1) line 807: let the second conjunct on the "if" statment be false
    meaning "dev->status_ep" is null. This means the "if" evaluates
    to false.

follow thru the code until...

(2) line 808: usb_ep_disable(dev->status_ep) passes in a null argument,
    however "usb_ep_disable" cannot handle that:

(from include/linux/usb/gadget.h)
191 static inline int
192 usb_ep_disable (struct usb_ep *ep)
193 {
194         return ep->ops->disable (ep);
195 }

--

Signed-off-by: Vitaly Kuzmichev <vkuzmichev@mvista.com>
2010-09-20 21:57:17 +02:00
Vitaly Kuzmichev
df559c1d21 USB-CDC: Correct stat_req initialization
Fix possible oops on stat_req->buf initialization and fix ep0 and
status_ep confusion (last one is just intended for stat_req keeping).

Signed-off-by: Vitaly Kuzmichev <vkuzmichev@mvista.com>
Signed-off-by: Stefano Babic <sbabic@denx.de>
2010-09-20 21:57:17 +02:00
Vitaly Kuzmichev
2e12abe654 USB-CDC: Replace 'strcpy' by 'strlcpy'
Replace 'strcpy' by more safe 'strlcpy' that is implemented in ether.c

Signed-off-by: Vitaly Kuzmichev <vkuzmichev@mvista.com>
2010-09-20 21:57:17 +02:00
Vitaly Kuzmichev
0129e327f4 USB-CDC: Correct freeing usb requests
Fix in_ep and out_ep confusion (rx_req was allocated from out_ep, not
from in_ep) and add lost dev->req freeing.

Signed-off-by: Vitaly Kuzmichev <vkuzmichev@mvista.com>
2010-09-20 21:57:17 +02:00
Vitaly Kuzmichev
7de7318591 USB-CDC: Use native debug printout macros
Replace Linux-like debug printout macros by native ones.

Signed-off-by: Vitaly Kuzmichev <vkuzmichev@mvista.com>

Applied after removing dead code like '#define DEBUG/#undef DEBUG'
2010-09-20 21:57:17 +02:00
Vitaly Kuzmichev
2721dbf1dd USB-CDC: Add lost 'qmult' definition
Add lost 'qmult' definition for High Speed devices and make it
configurable through CONFIG_USB_ETH_QMULT.

Signed-off-by: Vitaly Kuzmichev <vkuzmichev@mvista.com>
2010-09-20 21:57:16 +02:00
Remy Bohmer
23cd138503 Integrate USB gadget layer and USB CDC driver layer
Derived from Linux kernel 2.6.27

Signed-off-by: Thomas Smits <ts.smits@gmail.com>
Signed-off-by: Remy Bohmer <linux@bohmer.net>
2010-09-20 21:57:16 +02:00