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Commit 9dfb5f8e authored by Elson Roy Serrao's avatar Elson Roy Serrao
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usb: dwc3: debugfs: Add support for 64bit division on 32bit chipsets 



This change adds support for 64bit division on 32bit LE targets
using do_div() api.

Change-Id: I30247f514e13bcba80f707acccd65878de38dff5
Signed-off-by: default avatarElson Roy Serrao <eserrao@codeaurora.org>
parent 98c66447

drivers/usb/dwc3/debugfs.c

+10 −1
Original line number Diff line number Diff line
@@ -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),
@@ -1044,6 +1044,15 @@ 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;