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| author | Andrzej Pietrasiewicz <andrzej.p@samsung.com> | 2014-05-08 16:06:21 +0400 |
|---|---|---|
| committer | Felipe Balbi <balbi@ti.com> | 2014-05-14 18:37:27 +0400 |
| commit | 74d484669784836c83f23f80ee21a44e9fbf4d59 (patch) | |
| tree | 64e4c7d73805d82294c92fcfae9b0a6b0dabec91 /drivers/usb/gadget/f_fs.c | |
| parent | 10f0577aa5cb03c81cf6ddc2ff7de1b6d6152d0b (diff) | |
| download | linux-74d484669784836c83f23f80ee21a44e9fbf4d59.tar.xz | |
usb: gadget: FunctionFS: share VLA macros with all usb gadget files
Variable Length Array macros allow portable (compilable with both gcc
and clang) way of allocating a number of structures using a single
memory chunk. They can be useful for files other than f_fs.c,
so move them to a header file.
Signed-off-by: Andrzej Pietrasiewicz <andrzej.p@samsung.com>
Acked-by: Michal Nazarewicz <mina86@mina86.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
Diffstat (limited to 'drivers/usb/gadget/f_fs.c')
| -rw-r--r-- | drivers/usb/gadget/f_fs.c | 27 |
1 files changed, 1 insertions, 26 deletions
diff --git a/drivers/usb/gadget/f_fs.c b/drivers/usb/gadget/f_fs.c index a01b3bd8fa00..38641ea820a8 100644 --- a/drivers/usb/gadget/f_fs.c +++ b/drivers/usb/gadget/f_fs.c @@ -33,36 +33,11 @@ #include <linux/poll.h> #include "u_fs.h" +#include "u_f.h" #include "configfs.h" #define FUNCTIONFS_MAGIC 0xa647361 /* Chosen by a honest dice roll ;) */ -/* Variable Length Array Macros **********************************************/ -#define vla_group(groupname) size_t groupname##__next = 0 -#define vla_group_size(groupname) groupname##__next - -#define vla_item(groupname, type, name, n) \ - size_t groupname##_##name##__offset = ({ \ - size_t align_mask = __alignof__(type) - 1; \ - size_t offset = (groupname##__next + align_mask) & ~align_mask;\ - size_t size = (n) * sizeof(type); \ - groupname##__next = offset + size; \ - offset; \ - }) - -#define vla_item_with_sz(groupname, type, name, n) \ - size_t groupname##_##name##__sz = (n) * sizeof(type); \ - size_t groupname##_##name##__offset = ({ \ - size_t align_mask = __alignof__(type) - 1; \ - size_t offset = (groupname##__next + align_mask) & ~align_mask;\ - size_t size = groupname##_##name##__sz; \ - groupname##__next = offset + size; \ - offset; \ - }) - -#define vla_ptr(ptr, groupname, name) \ - ((void *) ((char *)ptr + groupname##_##name##__offset)) - /* Reference counter handling */ static void ffs_data_get(struct ffs_data *ffs); static void ffs_data_put(struct ffs_data *ffs); |