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| author | Dan Carpenter <dan.carpenter@linaro.org> | 2024-04-04 10:34:53 +0300 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2024-04-04 18:24:29 +0300 |
| commit | 2cfa0eea2675ce569dc80d2c0d2d644a452b77b3 (patch) | |
| tree | 5ac1772b1260c57ec2bcec5b42398ebf26667f1f /sound/soc/sof | |
| parent | 84ae7d9cfa5f6ec284efccedcb7baf7c075774d4 (diff) | |
| download | linux-2cfa0eea2675ce569dc80d2c0d2d644a452b77b3.tar.xz | |
ASoC: SOF: Clean up sof_ipc_flood_dfs_write()
This function doesn't support partial writes so using
simple_write_to_buffer() doesn't really make sense. It's better to
just use copy_from_user().
Signed-off-by: Dan Carpenter <dan.carpenter@linaro.org>
Acked-by: Peter Ujfalusi <peter.ujfalusi@linux.intel.com>
Link: https://msgid.link/r/a35dded2-392b-4ccb-9dbb-d782ac9b6547@moroto.mountain
Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'sound/soc/sof')
| -rw-r--r-- | sound/soc/sof/sof-client-ipc-flood-test.c | 17 |
1 files changed, 11 insertions, 6 deletions
diff --git a/sound/soc/sof/sof-client-ipc-flood-test.c b/sound/soc/sof/sof-client-ipc-flood-test.c index c0d6723aed59..1b2e9e25a836 100644 --- a/sound/soc/sof/sof-client-ipc-flood-test.c +++ b/sound/soc/sof/sof-client-ipc-flood-test.c @@ -160,15 +160,20 @@ static ssize_t sof_ipc_flood_dfs_write(struct file *file, const char __user *buf unsigned long ipc_count = 0; struct dentry *dentry; int err; - size_t size; char *string; int ret; + if (*ppos != 0) + return -EINVAL; + string = kzalloc(count + 1, GFP_KERNEL); if (!string) return -ENOMEM; - size = simple_write_to_buffer(string, count, ppos, buffer, count); + if (copy_from_user(string, buffer, count)) { + ret = -EFAULT; + goto out; + } /* * write op is only supported for ipc_flood_count or @@ -198,7 +203,7 @@ static ssize_t sof_ipc_flood_dfs_write(struct file *file, const char __user *buf /* limit max duration/ipc count for flood test */ if (flood_duration_test) { if (!ipc_duration_ms) { - ret = size; + ret = count; goto out; } @@ -207,7 +212,7 @@ static ssize_t sof_ipc_flood_dfs_write(struct file *file, const char __user *buf ipc_duration_ms = MAX_IPC_FLOOD_DURATION_MS; } else { if (!ipc_count) { - ret = size; + ret = count; goto out; } @@ -231,9 +236,9 @@ static ssize_t sof_ipc_flood_dfs_write(struct file *file, const char __user *buf if (err < 0) dev_err_ratelimited(dev, "debugfs write failed to idle %d\n", err); - /* return size if test is successful */ + /* return count if test is successful */ if (ret >= 0) - ret = size; + ret = count; out: kfree(string); return ret; |