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	lib: drop return value from igt_drop_caches
No one actually cares, everyone expects it to just work. Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
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				@ -321,26 +321,20 @@ igt_pipe_crc_get_crcs(igt_pipe_crc_t *pipe_crc, int n_crcs,
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 * Drop caches
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					 * Drop caches
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 */
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					 */
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int igt_drop_caches_set(uint64_t val)
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					void igt_drop_caches_set(uint64_t val)
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{
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					{
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	igt_debugfs_t debugfs;
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						igt_debugfs_t debugfs;
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	int fd;
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						int fd;
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	char data[19];
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						char data[19];
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	size_t nbytes;
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						size_t nbytes;
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	int ret = -1;
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	sprintf(data, "0x%" PRIx64, val);
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						sprintf(data, "0x%" PRIx64, val);
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	igt_debugfs_init(&debugfs);
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						igt_debugfs_init(&debugfs);
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	fd = igt_debugfs_open(&debugfs, "i915_gem_drop_caches", O_WRONLY);
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						fd = igt_debugfs_open(&debugfs, "i915_gem_drop_caches", O_WRONLY);
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	if (fd >= 0)
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						igt_assert(fd >= 0);
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	{
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						nbytes = write(fd, data, strlen(data) + 1);
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		nbytes = write(fd, data, strlen(data) + 1);
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						igt_assert(nbytes == strlen(data) + 1);
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		if (nbytes == strlen(data) + 1)
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						close(fd);
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			ret = 0;
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		close(fd);
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	}
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	return ret;
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}
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					}
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@ -92,6 +92,6 @@ void igt_pipe_crc_get_crcs(igt_pipe_crc_t *pipe_crc, int n_crcs,
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		  DROP_RETIRE | \
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							  DROP_RETIRE | \
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		  DROP_ACTIVE)
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							  DROP_ACTIVE)
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int igt_drop_caches_set(uint64_t val);
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					void igt_drop_caches_set(uint64_t val);
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#endif /* __IGT_DEBUGFS_H__ */
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					#endif /* __IGT_DEBUGFS_H__ */
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@ -294,7 +294,7 @@ static void do_forked_test(int fd, unsigned flags)
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		igt_fork_helper(&thrasher) {
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							igt_fork_helper(&thrasher) {
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			while (1) {
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								while (1) {
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				usleep(1000);
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									usleep(1000);
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				do_or_die(igt_drop_caches_set(val));
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									igt_drop_caches_set(val);
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			}
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								}
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		}
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							}
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	}
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						}
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@ -289,7 +289,7 @@ static void do_forked_test(int fd, unsigned flags)
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		igt_fork_helper(&thrasher) {
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							igt_fork_helper(&thrasher) {
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			while (1) {
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								while (1) {
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				usleep(1000);
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									usleep(1000);
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				do_or_die(igt_drop_caches_set(val));
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									igt_drop_caches_set(val);
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			}
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								}
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		}
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							}
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	}
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						}
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