/*
 * Copyright (c) 2014 MediaTek Inc.
 * Author: Hongzhou.Yang <hongzhou.yang@mediatek.com>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 */

#ifndef _DT_BINDINGS_PINCTRL_MT65XX_H
#define _DT_BINDINGS_PINCTRL_MT65XX_H

#define MTK_PIN_NO(x) ((x) << 8)
#define MTK_GET_PIN_NO(x) ((x) >> 8)
#define MTK_GET_PIN_FUNC(x) ((x) & 0xf)

#define MTK_PUPD_SET_R1R0_00 100
#define MTK_PUPD_SET_R1R0_01 101
#define MTK_PUPD_SET_R1R0_10 102
#define MTK_PUPD_SET_R1R0_11 103

#define MTK_DRIVE_2mA  2
#define MTK_DRIVE_4mA  4
#define MTK_DRIVE_6mA  6
#define MTK_DRIVE_8mA  8
#define MTK_DRIVE_10mA 10
#define MTK_DRIVE_12mA 12
#define MTK_DRIVE_14mA 14
#define MTK_DRIVE_16mA 16
#define MTK_DRIVE_20mA 20
#define MTK_DRIVE_24mA 24
#define MTK_DRIVE_28mA 28
#define MTK_DRIVE_32mA 32

#endif /* _DT_BINDINGS_PINCTRL_MT65XX_H */
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<tr><th>author</th><td>zijun_hu &lt;zijun_hu@htc.com&gt;</td><td class='right'>2016-12-12 16:45:02 -0800</td></tr>
<tr><th>committer</th><td>Linus Torvalds &lt;torvalds@linux-foundation.org&gt;</td><td class='right'>2016-12-12 18:55:09 -0800</td></tr>
<tr><th>commit</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/?id=8f6066049c54ef0f726869c27d610cef5d15e084'>8f6066049c54ef0f726869c27d610cef5d15e084</a> (<a href='/cgit.cgi/linux/net-next.git/patch/?id=8f6066049c54ef0f726869c27d610cef5d15e084'>patch</a>)</td></tr>
<tr><th>tree</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/tree/?id=8f6066049c54ef0f726869c27d610cef5d15e084'>f51e74b3a7158fdffa0c9f37f82fffe8fe3d537b</a></td></tr>
<tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/?id=c5caf21ab0cf884ef15b25af234f620e4a233139'>c5caf21ab0cf884ef15b25af234f620e4a233139</a> (<a href='/cgit.cgi/linux/net-next.git/diff/?id=8f6066049c54ef0f726869c27d610cef5d15e084&amp;id2=c5caf21ab0cf884ef15b25af234f620e4a233139'>diff</a>)</td></tr></table>
<div class='commit-subject'>mm/percpu.c: fix panic triggered by BUG_ON() falsely</div><div class='commit-msg'>As shown by pcpu_build_alloc_info(), the number of units within a percpu
group is deduced by rounding up the number of CPUs within the group to
@upa boundary/ Therefore, the number of CPUs isn't equal to the units's
if it isn't aligned to @upa normally.  However, pcpu_page_first_chunk()
uses BUG_ON() to assert that one number is equal to the other roughly,
so a panic is maybe triggered by the BUG_ON() incorrectly.

In order to fix this issue, the number of CPUs is rounded up then
compared with units's and the BUG_ON() is replaced with a warning and
return of an error code as well, to keep system alive as much as
possible.

Link: http://lkml.kernel.org/r/57FCF07C.2020103@zoho.com
Signed-off-by: zijun_hu &lt;zijun_hu@htc.com&gt;
Cc: Tejun Heo &lt;tj@kernel.org&gt;
Cc: Christoph Lameter &lt;cl@linux.com&gt;
Signed-off-by: Andrew Morton &lt;akpm@linux-foundation.org&gt;
Signed-off-by: Linus Torvalds &lt;torvalds@linux-foundation.org&gt;
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