#ifndef _PGTABLE_NOPMD_H
#define _PGTABLE_NOPMD_H

#ifndef __ASSEMBLY__

#include <asm-generic/pgtable-nopud.h>

struct mm_struct;

#define __PAGETABLE_PMD_FOLDED

/*
 * Having the pmd type consist of a pud gets the size right, and allows
 * us to conceptually access the pud entry that this pmd is folded into
 * without casting.
 */
typedef struct { pud_t pud; } pmd_t;

#define PMD_SHIFT	PUD_SHIFT
#define PTRS_PER_PMD	1
#define PMD_SIZE  	(1UL << PMD_SHIFT)
#define PMD_MASK  	(~(PMD_SIZE-1))

/*
 * The "pud_xxx()" functions here are trivial for a folded two-level
 * setup: the pmd is never bad, and a pmd always exists (as it's folded
 * into the pud entry)
 */
static inline int pud_none(pud_t pud)		{ return 0; }
static inline int pud_bad(pud_t pud)		{ return 0; }
static inline int pud_present(pud_t pud)	{ return 1; }
static inline void pud_clear(pud_t *pud)	{ }
#define pmd_ERROR(pmd)				(pud_ERROR((pmd).pud))

#define pud_populate(mm, pmd, pte)		do { } while (0)

/*
 * (pmds are folded into puds so this doesn't get actually called,
 * but the define is needed for a generic inline function.)
 */
#define set_pud(pudptr, pudval)			set_pmd((pmd_t *)(pudptr), (pmd_t) { pudval })

static inline pmd_t * pmd_offset(pud_t * pud, unsigned long address)
{
	return (pmd_t *)pud;
}

#define pmd_val(x)				(pud_val((x).pud))
#define __pmd(x)				((pmd_t) { __pud(x) } )

#define pud_page(pud)				(pmd_page((pmd_t){ pud }))
#define pud_page_vaddr(pud)			(pmd_page_vaddr((pmd_t){ pud }))

/*
 * allocating and freeing a pmd is trivial: the 1-entry pmd is
 * inside the pud, so has no extra memory associated with it.
 */
#define pmd_alloc_one(mm, address)		NULL
static inline void pmd_free(struct mm_struct *mm, pmd_t *pmd)
{
}
#define __pmd_free_tlb(tlb, x, a)		do { } while (0)

#undef  pmd_addr_end
#define pmd_addr_end(addr, end)			(end)

#endif /* __ASSEMBLY__ */

#endif /* _PGTABLE_NOPMD_H */
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<div class='path'>path: <a href='/cgit.cgi/linux/net-next.git/commit/?id=407788b51db6f6aab499d02420082f436abf3238'>root</a>/<a href='/cgit.cgi/linux/net-next.git/commit/include?id=407788b51db6f6aab499d02420082f436abf3238'>include</a>/<a href='/cgit.cgi/linux/net-next.git/commit/include/trace?id=407788b51db6f6aab499d02420082f436abf3238'>trace</a>/<a href='/cgit.cgi/linux/net-next.git/commit/include/trace/events?id=407788b51db6f6aab499d02420082f436abf3238'>events</a>/<a href='/cgit.cgi/linux/net-next.git/commit/include/trace/events/lock.h?id=407788b51db6f6aab499d02420082f436abf3238'>lock.h</a></div><div class='content'><div class='cgit-panel'><b>diff options</b><form method='get'><input type='hidden' name='id' value='407788b51db6f6aab499d02420082f436abf3238'/><table><tr><td colspan='2'/></tr><tr><td class='label'>context:</td><td class='ctrl'><select name='context' onchange='this.form.submit();'><option value='1'>1</option><option value='2'>2</option><option value='3' selected='selected'>3</option><option value='4'>4</option><option value='5'>5</option><option value='6'>6</option><option value='7'>7</option><option value='8'>8</option><option value='9'>9</option><option value='10'>10</option><option value='15'>15</option><option value='20'>20</option><option value='25'>25</option><option value='30'>30</option><option value='35'>35</option><option value='40'>40</option></select></td></tr><tr><td class='label'>space:</td><td class='ctrl'><select name='ignorews' onchange='this.form.submit();'><option value='0' selected='selected'>include</option><option value='1'>ignore</option></select></td></tr><tr><td class='label'>mode:</td><td class='ctrl'><select name='dt' onchange='this.form.submit();'><option value='0' selected='selected'>unified</option><option value='1'>ssdiff</option><option value='2'>stat only</option></select></td></tr><tr><td/><td class='ctrl'><noscript><input type='submit' value='reload'/></noscript></td></tr></table></form></div><table summary='commit info' class='commit-info'>
<tr><th>author</th><td>Tony Lindgren &lt;tony@atomide.com&gt;</td><td class='right'>2017-01-24 09:18:57 -0600</td></tr>
<tr><th>committer</th><td>Greg Kroah-Hartman &lt;gregkh@linuxfoundation.org&gt;</td><td class='right'>2017-01-25 11:02:29 +0100</td></tr>
<tr><th>commit</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/include/trace/events/lock.h?id=407788b51db6f6aab499d02420082f436abf3238'>407788b51db6f6aab499d02420082f436abf3238</a> (<a href='/cgit.cgi/linux/net-next.git/patch/include/trace/events/lock.h?id=407788b51db6f6aab499d02420082f436abf3238'>patch</a>)</td></tr>
<tr><th>tree</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/tree/?id=407788b51db6f6aab499d02420082f436abf3238'>b2fb3c885baf47cd2bd8ee0429f423b352e11905</a> /<a href='/cgit.cgi/linux/net-next.git/tree/include/trace/events/lock.h?id=407788b51db6f6aab499d02420082f436abf3238'>include/trace/events/lock.h</a></td></tr>
<tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/include/trace/events/lock.h?id=7a308bb3016f57e5be11a677d15b821536419d36'>7a308bb3016f57e5be11a677d15b821536419d36</a> (<a href='/cgit.cgi/linux/net-next.git/diff/include/trace/events/lock.h?id=407788b51db6f6aab499d02420082f436abf3238&amp;id2=7a308bb3016f57e5be11a677d15b821536419d36'>diff</a>)</td></tr></table>
<div class='commit-subject'>usb: musb: Fix host mode error -71 regression</div><div class='commit-msg'>Commit 467d5c980709 ("usb: musb: Implement session bit based runtime PM for
musb-core") started implementing musb generic runtime PM support by
introducing devctl register session bit based state control.

This caused a regression where if a USB mass storage device is connected
to a USB hub, we can get:

usb 1-1: reset high-speed USB device number 2 using musb-hdrc
usb 1-1: device descriptor read/64, error -71
usb 1-1.1: new high-speed USB device number 4 using musb-hdrc

This is because before the USB storage device is connected, musb is
in OTG_STATE_A_SUSPEND. And we currently only set need_finish_resume
in musb_stage0_irq() and the related code calling finish_resume_work
in musb_resume() and musb_runtime_resume() never gets called.

To fix the issue, we can call schedule_delayed_work() directly in
musb_stage0_irq() to have finish_resume_work run.

And we should no longer never get interrupts when when suspended.
We have changed musb to no longer need pm_runtime_irqsafe().
The need_finish_resume flag was added in commit 9298b4aad37e ("usb:
musb: fix device hotplug behind hub") and no longer applies as far
as I can tell. So let's just remove the earlier code that no longer
is needed.

Fixes: 467d5c980709 ("usb: musb: Implement session bit based runtime PM for musb-core")
Reported-by: Bin Liu &lt;b-liu@ti.com&gt;
Signed-off-by: Tony Lindgren &lt;tony@atomide.com&gt;
Signed-off-by: Bin Liu &lt;b-liu@ti.com&gt;
Cc: stable &lt;stable@vger.kernel.org&gt;
Signed-off-by: Greg Kroah-Hartman &lt;gregkh@linuxfoundation.org&gt;
</div><div class='diffstat-header'><a href='/cgit.cgi/linux/net-next.git/diff/?id=407788b51db6f6aab499d02420082f436abf3238'>Diffstat</a> (limited to 'include/trace/events/lock.h')</div><table summary='diffstat' class='diffstat'>