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usb: dwc2: Fix coverity issue in hcd_queue.c

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This fixes the coverity issues related to unreachable code with
debugging off.

Signed-off-by: Vardan Mikayelyan <mvardan@synopsys.com>
Signed-off-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
This commit is contained in:
Vardan Mikayelyan 2016-11-10 17:38:21 -08:00 committed by Felipe Balbi
parent 2df72e7f6e
commit 3c22037050
1 changed files with 36 additions and 33 deletions
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69
drivers/usb/dwc2/hcd_queue.c
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@ -355,6 +355,37 @@ static void pmap_unschedule(unsigned long *map, int bits_per_period,
}
}
/**
* dwc2_get_ls_map() - Get the map used for the given qh
*
* @hsotg: The HCD state structure for the DWC OTG controller.
* @qh: QH for the periodic transfer.
*
* We'll always get the periodic map out of our TT. Note that even if we're
* running the host straight in low speed / full speed mode it appears as if
* a TT is allocated for us, so we'll use it. If that ever changes we can
* add logic here to get a map out of "hsotg" if !qh->do_split.
*
* Returns: the map or NULL if a map couldn't be found.
*/
static unsigned long *dwc2_get_ls_map(struct dwc2_hsotg *hsotg,
struct dwc2_qh *qh)
{
unsigned long *map;
/* Don't expect to be missing a TT and be doing low speed scheduling */
if (WARN_ON(!qh->dwc_tt))
return NULL;
/* Get the map and adjust if this is a multi_tt hub */
map = qh->dwc_tt->periodic_bitmaps;
if (qh->dwc_tt->usb_tt->multi)
map += DWC2_ELEMENTS_PER_LS_BITMAP * qh->ttport;
return map;
}
#ifdef DWC2_PRINT_SCHEDULE
/*
* cat_printf() - A printf() + strcat() helper
*
@ -454,35 +485,6 @@ static void pmap_print(unsigned long *map, int bits_per_period,
}
}
/**
* dwc2_get_ls_map() - Get the map used for the given qh
*
* @hsotg: The HCD state structure for the DWC OTG controller.
* @qh: QH for the periodic transfer.
*
* We'll always get the periodic map out of our TT. Note that even if we're
* running the host straight in low speed / full speed mode it appears as if
* a TT is allocated for us, so we'll use it. If that ever changes we can
* add logic here to get a map out of "hsotg" if !qh->do_split.
*
* Returns: the map or NULL if a map couldn't be found.
*/
static unsigned long *dwc2_get_ls_map(struct dwc2_hsotg *hsotg,
struct dwc2_qh *qh)
{
unsigned long *map;
/* Don't expect to be missing a TT and be doing low speed scheduling */
if (WARN_ON(!qh->dwc_tt))
return NULL;
/* Get the map and adjust if this is a multi_tt hub */
map = qh->dwc_tt->periodic_bitmaps;
if (qh->dwc_tt->usb_tt->multi)
map += DWC2_ELEMENTS_PER_LS_BITMAP * qh->ttport;
return map;
}
struct dwc2_qh_print_data {
struct dwc2_hsotg *hsotg;
@ -519,9 +521,6 @@ static void dwc2_qh_schedule_print(struct dwc2_hsotg *hsotg,
* If we don't have tracing turned on, don't run unless the special
* define is turned on.
*/
#ifndef DWC2_PRINT_SCHEDULE
return;
#endif
if (qh->schedule_low_speed) {
unsigned long *map = dwc2_get_ls_map(hsotg, qh);
@ -559,8 +558,12 @@ static void dwc2_qh_schedule_print(struct dwc2_hsotg *hsotg,
DWC2_HS_SCHEDULE_UFRAMES, "uFrame", "us",
dwc2_qh_print, &print_data);
}
return;
}
#else
static inline void dwc2_qh_schedule_print(struct dwc2_hsotg *hsotg,
struct dwc2_qh *qh) {};
#endif
/**
* dwc2_ls_pmap_schedule() - Schedule a low speed QH