This patch is to enable the USB gadget device for Intel Quark X1000
Signed-off-by: NBryan O'Donoghue <bryan.odonoghue@intel.com>
Signed-off-by: NBing Niu <bing.niu@intel.com>
Signed-off-by: NAlvin (Weike) Chen <alvin.chen@intel.com>
Signed-off-by: NFelipe Balbi <balbi@ti.com>

In case of error, the function devm_ioremap_resource() returns ERR_PTR()
and never returns NULL. The NULL test in the return value check should
be replaced with IS_ERR().
Acked-by: NLaurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Signed-off-by: NWei Yongjun <yongjun_wei@trendmicro.com.cn>
Signed-off-by: NFelipe Balbi <balbi@ti.com>

As, the interrupt for DMA is counted from 1, so need to checked
the USBA_NR_DMAS, in old way, it only check (USBA_NR_DMAS - 1),
so fix it.
Reported-by: NMax Liao <liaops@embest-tech.com>
Signed-off-by: NBo Shen <voice.shen@atmel.com>
Signed-off-by: NFelipe Balbi <balbi@ti.com>

Convert a zero return value on error to a negative one, as returned
elsewhere in the function.

A simplified version of the semantic match that finds this problem is as
follows: (http://coccinelle.lip6.fr/)

// <smpl>
@@
identifier ret; expression e1,e2;
@@
(
if (\(ret < 0\|ret != 0\))
 { ... return ret; }
|
ret = 0
)
... when != ret = e1
    when != &ret
*if(...)
{
  ... when != ret = e2
      when forall
 return ret;
}
// </smpl>
Reviewed-by: NJeff Moyer <jmoyer@redhat.com>
Signed-off-by: NJulia Lawall <Julia.Lawall@lip6.fr>
Signed-off-by: NFelipe Balbi <balbi@ti.com>

No functional changes, just fixing one easy to spot
sparse error.

While fixing that sparse error, I had to add two
includes to a header to avoid a build error.
Signed-off-by: NFelipe Balbi <balbi@ti.com>

No functional changes, just fixing one easy
to spot sparse error.
Signed-off-by: NFelipe Balbi <balbi@ti.com>

No functional changes, just fixing some easy
to spot sparse errors.
Signed-off-by: NFelipe Balbi <balbi@ti.com>

The drivers/usb/gadget directory contains many files.
Files which are related can be distributed into separate directories.
This patch moves the UDC drivers into a separate directory.
Signed-off-by: NAndrzej Pietrasiewicz <andrzej.p@samsung.com>
Signed-off-by: NFelipe Balbi <balbi@ti.com>