/* * Copyright (c) 2008 Silicon Graphics, Inc. * All Rights Reserved. * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License as * published by the Free Software Foundation. * * This program is distributed in the hope that it would 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. * * You should have received a copy of the GNU General Public License * along with this program; if not, write the Free Software Foundation, * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA */ #ifndef __XFS_IOCTL_H__ #define __XFS_IOCTL_H__ extern int xfs_ioc_space( struct file *filp, unsigned int cmd, xfs_flock64_t *bf); int xfs_ioc_swapext( xfs_swapext_t *sxp); extern int xfs_find_handle( unsigned int cmd, xfs_fsop_handlereq_t *hreq); extern int xfs_open_by_handle( struct file *parfilp, xfs_fsop_handlereq_t *hreq); extern int xfs_readlink_by_handle( struct file *parfilp, xfs_fsop_handlereq_t *hreq); extern int xfs_attrmulti_attr_get( struct inode *inode, unsigned char *name, unsigned char __user *ubuf, __uint32_t *len, __uint32_t flags); extern int xfs_attrmulti_attr_set( struct inode *inode, unsigned char *name, const unsigned char __user *ubuf, __uint32_t len, __uint32_t flags); extern int xfs_attrmulti_attr_remove( struct inode *inode, unsigned char *name, __uint32_t flags); extern struct dentry * xfs_handle_to_dentry( struct file *parfilp, void __user *uhandle, u32 hlen); extern long xfs_file_ioctl( struct file *filp, unsigned int cmd, unsigned long p); extern long xfs_file_compat_ioctl( struct file *file, unsigned int cmd, unsigned long arg); extern int xfs_set_dmattrs( struct xfs_inode *ip, u_int evmask, u_int16_t state); #endif t.cgi/linux/net-next.git/commit/drivers/usb/serial/aircable.c?id=618c808968852609d2d9f0e5cfc351a4807ef8d0'>commitdiff
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authorChen-Yu Tsai <wens@csie.org>2016-11-11 11:12:43 +0800
committerMark Brown <broonie@kernel.org>2016-11-11 15:34:45 +0000
commit618c808968852609d2d9f0e5cfc351a4807ef8d0 (patch)
tree01a8d928c06fe7bef488f55bade6ba37b958bb5f /drivers/usb/serial/aircable.c
parent1001354ca34179f3db924eb66672442a173147dc (diff)
regulator: axp20x: Fix axp809 ldo_io registration error on cold boot
The maximum supported voltage for ldo_io# is 3.3V, but on cold boot the selector comes up at 0x1f, which maps to 3.8V. This was previously corrected by Allwinner's U-boot, which set all regulators on the PMICs to some pre-configured voltage. With recent progress in U-boot SPL support, this is no longer the case. In any case we should handle this quirk in the kernel driver as well. This invalid setting causes _regulator_get_voltage() to fail with -EINVAL which causes regulator registration to fail when constrains are used: [ 1.054181] vcc-pg: failed to get the current voltage(-22) [ 1.059670] axp20x-regulator axp20x-regulator.0: Failed to register ldo_io0 [ 1.069749] axp20x-regulator: probe of axp20x-regulator.0 failed with error -22 This commits makes the axp20x regulator driver accept the 0x1f register value, fixing this. The datasheet does not guarantee reliable operation above 3.3V, so on boards where this regulator is used the regulator-max-microvolt setting must be 3.3V or less. This is essentially the same as the commit f40d4896bf32 ("regulator: axp20x: Fix axp22x ldo_io registration error on cold boot") for AXP22x PMICs. Fixes: a51f9f4622a3 ("regulator: axp20x: support AXP809 variant") Signed-off-by: Chen-Yu Tsai <wens@csie.org> Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'drivers/usb/serial/aircable.c')