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Merge "usb: dwc3: debugfs: Add support for 64bit division on 32bit chipsets"

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qctecmdr 2020-06-11 21:35:28 -07:00 • committed by Gerrit - the friendly Code Review server
commit 1b78b533e6
1 changed files with 10 additions and 1 deletions
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11
drivers/usb/dwc3/debugfs.c
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@ -57,7 +57,7 @@
#define ep_event_rate(ev, c, p, dt) \
((dt) ? ((c.ev - p.ev) * (MSEC_PER_SEC)) / (dt) : 0)
((dt) ? (calc_evt_rate(c.ev, p.ev, dt)) : 0)
static const struct debugfs_reg32 dwc3_regs[] = {
dump_register(GSBUSCFG0),
@ -1049,6 +1049,15 @@ static ssize_t dwc3_gadget_int_events_store(struct file *file,
return count;
}
static inline u64 calc_evt_rate(unsigned int c, unsigned int p, s64 dt)
{
u64 ev_val;
ev_val = (u64)((c-p)*(MSEC_PER_SEC));
do_div(ev_val, (u64)dt);
return ev_val;
}
static int dwc3_gadget_int_events_show(struct seq_file *s, void *unused)
{
unsigned long flags;