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usb: dwc3: gadget: refactor dwc3_repare_one_trb 

The function __dwc3_prepare_one_trb has many parameters. Since it is
only used in dwc3_prepare_one_trb there is no point in keeping the
function. We merge both functions and get rid of the big list of
parameters.

Fixes: 40d829fb2e ("usb: dwc3: gadget: Correct ISOC DATA PIDs for short packets")
Cc: stable <stable@kernel.org>
Signed-off-by: Michael Grzeschik <m.grzeschik@pengutronix.de>
Link: https://lore.kernel.org/r/20220704141812.1532306-2-m.grzeschik@pengutronix.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Michael Grzeschik 2022-07-04 16:18:11 +02:00 committed by Greg Kroah-Hartman
parent 5ea5746dfa
commit 23385cec5f
1 changed files with 40 additions and 52 deletions
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92
drivers/usb/dwc3/gadget.c
View File

@ -1183,17 +1183,49 @@ static u32 dwc3_calc_trbs_left(struct dwc3_ep *dep)
return trbs_left;
}
static void __dwc3_prepare_one_trb(struct dwc3_ep *dep, struct dwc3_trb *trb,
dma_addr_t dma, unsigned int length, unsigned int chain,
unsigned int node, unsigned int stream_id,
unsigned int short_not_ok, unsigned int no_interrupt,
unsigned int is_last, bool must_interrupt)
/**
* dwc3_prepare_one_trb - setup one TRB from one request
* @dep: endpoint for which this request is prepared
* @req: dwc3_request pointer
* @trb_length: buffer size of the TRB
* @chain: should this TRB be chained to the next?
* @node: only for isochronous endpoints. First TRB needs different type.
* @use_bounce_buffer: set to use bounce buffer
* @must_interrupt: set to interrupt on TRB completion
*/
static void dwc3_prepare_one_trb(struct dwc3_ep *dep,
struct dwc3_request *req, unsigned int trb_length,
unsigned int chain, unsigned int node, bool use_bounce_buffer,
bool must_interrupt)
{
struct dwc3_trb *trb;
dma_addr_t dma;
unsigned int stream_id = req->request.stream_id;
unsigned int short_not_ok = req->request.short_not_ok;
unsigned int no_interrupt = req->request.no_interrupt;
unsigned int is_last = req->request.is_last;
struct dwc3 *dwc = dep->dwc;
struct usb_gadget *gadget = dwc->gadget;
enum usb_device_speed speed = gadget->speed;
trb->size = DWC3_TRB_SIZE_LENGTH(length);
if (use_bounce_buffer)
dma = dep->dwc->bounce_addr;
else if (req->request.num_sgs > 0)
dma = sg_dma_address(req->start_sg);
else
dma = req->request.dma;
trb = &dep->trb_pool[dep->trb_enqueue];
if (!req->trb) {
dwc3_gadget_move_started_request(req);
req->trb = trb;
req->trb_dma = dwc3_trb_dma_offset(dep, trb);
}
req->num_trbs++;
trb->size = DWC3_TRB_SIZE_LENGTH(trb_length);
trb->bpl = lower_32_bits(dma);
trb->bph = upper_32_bits(dma);
@ -1233,10 +1265,10 @@ static void __dwc3_prepare_one_trb(struct dwc3_ep *dep, struct dwc3_trb *trb,
unsigned int mult = 2;
unsigned int maxp = usb_endpoint_maxp(ep->desc);
if (length <= (2 * maxp))
if (trb_length <= (2 * maxp))
mult--;
if (length <= maxp)
if (trb_length <= maxp)
mult--;
trb->size |= DWC3_TRB_SIZE_PCM1(mult);
@ -1310,50 +1342,6 @@ static void __dwc3_prepare_one_trb(struct dwc3_ep *dep, struct dwc3_trb *trb,
trace_dwc3_prepare_trb(dep, trb);
}
/**
* dwc3_prepare_one_trb - setup one TRB from one request
* @dep: endpoint for which this request is prepared
* @req: dwc3_request pointer
* @trb_length: buffer size of the TRB
* @chain: should this TRB be chained to the next?
* @node: only for isochronous endpoints. First TRB needs different type.
* @use_bounce_buffer: set to use bounce buffer
* @must_interrupt: set to interrupt on TRB completion
*/
static void dwc3_prepare_one_trb(struct dwc3_ep *dep,
struct dwc3_request *req, unsigned int trb_length,
unsigned int chain, unsigned int node, bool use_bounce_buffer,
bool must_interrupt)
{
struct dwc3_trb *trb;
dma_addr_t dma;
unsigned int stream_id = req->request.stream_id;
unsigned int short_not_ok = req->request.short_not_ok;
unsigned int no_interrupt = req->request.no_interrupt;
unsigned int is_last = req->request.is_last;
if (use_bounce_buffer)
dma = dep->dwc->bounce_addr;
else if (req->request.num_sgs > 0)
dma = sg_dma_address(req->start_sg);
else
dma = req->request.dma;
trb = &dep->trb_pool[dep->trb_enqueue];
if (!req->trb) {
dwc3_gadget_move_started_request(req);
req->trb = trb;
req->trb_dma = dwc3_trb_dma_offset(dep, trb);
}
req->num_trbs++;
__dwc3_prepare_one_trb(dep, trb, dma, trb_length, chain, node,
stream_id, short_not_ok, no_interrupt, is_last,
must_interrupt);
}
static bool dwc3_needs_extra_trb(struct dwc3_ep *dep, struct dwc3_request *req)
{
unsigned int maxp = usb_endpoint_maxp(dep->endpoint.desc);