#ifndef IPV6_H
#define IPV6_H

#include <asm/byteorder.h>

#include "built_in.h"

/*
 * IPv6 fixed header
 *
 * BEWARE, it is incorrect. The first 4 bits of flow_lbl
 * are glued to priority now, forming "class".
 */
struct ipv6hdr {
#if defined(__LITTLE_ENDIAN_BITFIELD)
	__extension__ uint8_t priority:4,
			      version:4;
#elif defined(__BIG_ENDIAN_BITFIELD)
	__extension__ uint8_t version:4,
			      priority:4;
#else
# error "Please fix <asm/byteorder.h>"
#endif
	uint8_t flow_lbl[3];
	uint16_t payload_len;
	uint8_t nexthdr;
	uint8_t hop_limit;
	struct in6_addr saddr;
	struct in6_addr daddr;
} __packed;

#endif /* IPV6_H */
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<tr><th>author</th><td>Marek Vasut &lt;marex@denx.de&gt;</td><td class='right'>2016-09-19 21:30:25 +0200</td></tr>
<tr><th>committer</th><td>Mark Brown &lt;broonie@kernel.org&gt;</td><td class='right'>2016-09-20 18:55:08 +0100</td></tr>
<tr><th>commit</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/?id=b413886886b9a8f845f7d1a5adafa0ca573d3828'>b413886886b9a8f845f7d1a5adafa0ca573d3828</a> (<a href='/cgit.cgi/linux/net-next.git/patch/?id=b413886886b9a8f845f7d1a5adafa0ca573d3828'>patch</a>)</td></tr>
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<div class='commit-subject'>ASoC: fsl_asrc: use flat regmap cache</div><div class='commit-msg'>Same as commit ce492b3b8f99cf9d2f807ec22d8805c996a09503
Subject: drm/fsl-dcu: use flat regmap cache

Using flat regmap cache instead of RB-tree to avoid the following
lockdep warning on driver load:
WARNING: CPU: 0 PID: 1 at kernel/locking/lockdep.c:2871 lockdep_trace_alloc+0x104/0x128
DEBUG_LOCKS_WARN_ON(irqs_disabled_flags(flags))

The RB-tree regmap cache needs to allocate new space on first
writes. However, allocations in an atomic context (e.g. when a
spinlock is held) are not allowed. The function regmap_write
calls map-&gt;lock, which acquires a spinlock in the fast_io case.
Since the driver uses MMIO, the regmap bus of type regmap_mmio
is being used which has fast_io set to true.

Signed-off-by: Marek Vasut &lt;marex@denx.de&gt;
Acked-by: Nicolin Chen &lt;nicoleotsuka@gmail.com&gt;
Signed-off-by: Mark Brown &lt;broonie@kernel.org&gt;
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