On Thu, Jan 18, 2018 at 7:31 AM, Donglin Peng dolinux.peng@gmail.com wrote:
Now the debugfs files dais/platforms/codecs have a size limit PAGE_SIZE and the user can not see the whole contents of dai_list/platform_list/codec_list when they are larger than this limit.
This patch uses seq_file instead to make sure dais/platforms/codecs show the full contents of dai_list/platform_list/codec_list.
If it's not critical, I would suggest to wait till v4.16-rc1, where I would like to push [1], and switch to DEFINE_SHOW_ATTRIBUTE() macro.
+static int codec_list_seq_open(struct inode *inode, struct file *file) +{
return single_open(file, codec_list_seq_show, NULL);}
static const struct file_operations codec_list_fops = {
.open = codec_list_seq_open,.read = seq_read,.llseek = seq_lseek,.release = single_release,};
This will be just
DEFINE_SHOW_ATTRIBUTE(codec_list_seq);
+static int dai_list_seq_open(struct inode *inode, struct file *file) +{
return single_open(file, dai_list_seq_show, NULL);}
static const struct file_operations dai_list_fops = {
.open = dai_list_seq_open,.read = seq_read,.llseek = seq_lseek,.release = single_release,};
Ditto.
+static int platform_list_seq_open(struct inode *inode, struct file *file) +{
return single_open(file, platform_list_seq_show, NULL);}
static const struct file_operations platform_list_fops = {
.open = platform_list_seq_open,.read = seq_read,.llseek = seq_lseek,.release = single_release,};
Ditto.
[1]: https://patchwork.kernel.org/patch/10178813/