/* * V4L2 clock service * * Copyright (C) 2012-2013, Guennadi Liakhovetski * * 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. * * ATTENTION: This is a temporary API and it shall be replaced by the generic * clock API, when the latter becomes widely available. */ #ifndef MEDIA_V4L2_CLK_H #define MEDIA_V4L2_CLK_H #include #include #include #include struct module; struct device; struct clk; struct v4l2_clk { struct list_head list; const struct v4l2_clk_ops *ops; const char *dev_id; int enable; struct mutex lock; /* Protect the enable count */ atomic_t use_count; struct clk *clk; void *priv; }; struct v4l2_clk_ops { struct module *owner; int (*enable)(struct v4l2_clk *clk); void (*disable)(struct v4l2_clk *clk); unsigned long (*get_rate)(struct v4l2_clk *clk); int (*set_rate)(struct v4l2_clk *clk, unsigned long); }; struct v4l2_clk *v4l2_clk_register(const struct v4l2_clk_ops *ops, const char *dev_name, void *priv); void v4l2_clk_unregister(struct v4l2_clk *clk); struct v4l2_clk *v4l2_clk_get(struct device *dev, const char *id); void v4l2_clk_put(struct v4l2_clk *clk); int v4l2_clk_enable(struct v4l2_clk *clk); void v4l2_clk_disable(struct v4l2_clk *clk); unsigned long v4l2_clk_get_rate(struct v4l2_clk *clk); int v4l2_clk_set_rate(struct v4l2_clk *clk, unsigned long rate); struct module; struct v4l2_clk *__v4l2_clk_register_fixed(const char *dev_id, unsigned long rate, struct module *owner); void v4l2_clk_unregister_fixed(struct v4l2_clk *clk); static inline struct v4l2_clk *v4l2_clk_register_fixed(const char *dev_id, unsigned long rate) { return __v4l2_clk_register_fixed(dev_id, rate, THIS_MODULE); } #define V4L2_CLK_NAME_SIZE 64 #define v4l2_clk_name_i2c(name, size, adap, client) snprintf(name, size, \ "%d-%04x", adap, client) #define v4l2_clk_name_of(name, size, of_full_name) snprintf(name, size, \ "of-%s", of_full_name) #endif 20f044d9bf6207a'>commitdiff
path: root/net/batman-adv/icmp_socket.c
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authorChristoph Hellwig <hch@lst.de>2017-02-05 18:10:35 +0100
committerJens Axboe <axboe@fb.com>2017-02-06 09:34:46 -0700
commiteeeefd41843218c55a8782a6920f044d9bf6207a (patch)
treec342eac46626e62745aa8e1a982626efca8b121d /net/batman-adv/icmp_socket.c
parentc14024dbb156c8392908aaa822097d27c6af8ec8 (diff)
block: don't try Write Same from __blkdev_issue_zeroout
Write Same can return an error asynchronously if it turns out the underlying SCSI device does not support Write Same, which makes a proper fallback to other methods in __blkdev_issue_zeroout impossible. Thus only issue a Write Same from blkdev_issue_zeroout an don't try it at all from __blkdev_issue_zeroout as a non-invasive workaround. Signed-off-by: Christoph Hellwig <hch@lst.de> Reported-by: Junichi Nomura <j-nomura@ce.jp.nec.com> Fixes: e73c23ff ("block: add async variant of blkdev_issue_zeroout") Tested-by: Junichi Nomura <j-nomura@ce.jp.nec.com> Signed-off-by: Jens Axboe <axboe@fb.com>
Diffstat (limited to 'net/batman-adv/icmp_socket.c')