Bernard Zhao <zhaojunkui2008@xxxxxxx> writes:
> When mt7601u loaded, there are two cases:
> First when mt7601u is loaded, in function mt7601u_probe, if
> function mt7601u_probe run into error lable err_hw,
> mt7601u_cleanup didn`t cleanup the debugfs node.
> Second when the module disconnect, in function mt7601u_disconnect,
> mt7601u_cleanup didn`t cleanup the debugfs node.
> This patch add debugfs exit function and try to cleanup debugfs
> node when mt7601u loaded fail or unloaded.
>
> Signed-off-by: Bernard Zhao <zhaojunkui2008@xxxxxxx>
> ---
> .../net/wireless/mediatek/mt7601u/debugfs.c | 25 +++++++++++--------
> drivers/net/wireless/mediatek/mt7601u/init.c | 5 ++++
> .../net/wireless/mediatek/mt7601u/mt7601u.h | 4 +++
> 3 files changed, 24 insertions(+), 10 deletions(-)
>
> diff --git a/drivers/net/wireless/mediatek/mt7601u/debugfs.c b/drivers/net/wireless/mediatek/mt7601u/debugfs.c
> index 20669eacb66e..1ae3d75d3c9b 100644
> --- a/drivers/net/wireless/mediatek/mt7601u/debugfs.c
> +++ b/drivers/net/wireless/mediatek/mt7601u/debugfs.c
> @@ -124,17 +124,22 @@ DEFINE_SHOW_ATTRIBUTE(mt7601u_eeprom_param);
>
> void mt7601u_init_debugfs(struct mt7601u_dev *dev)
> {
> - struct dentry *dir;
> -
> - dir = debugfs_create_dir("mt7601u", dev->hw->wiphy->debugfsdir);
> - if (!dir)
> + dev->root_dir = debugfs_create_dir("mt7601u", dev->hw->wiphy->debugfsdir);
> + if (!dev->root_dir)
> return;
>
> - debugfs_create_u8("temperature", 0400, dir, &dev->raw_temp);
> - debugfs_create_u32("temp_mode", 0400, dir, &dev->temp_mode);
> + debugfs_create_u8("temperature", 0400, dev->root_dir, &dev->raw_temp);
> + debugfs_create_u32("temp_mode", 0400, dev->root_dir, &dev->temp_mode);
> +
> + debugfs_create_u32("regidx", 0600, dev->root_dir, &dev->debugfs_reg);
> + debugfs_create_file("regval", 0600, dev->root_dir, dev, &fops_regval);
> + debugfs_create_file("ampdu_stat", 0400, dev->root_dir, dev, &mt7601u_ampdu_stat_fops);
> + debugfs_create_file("eeprom_param", 0400, dev->root_dir, dev, &mt7601u_eeprom_param_fops);
> +}
>
> - debugfs_create_u32("regidx", 0600, dir, &dev->debugfs_reg);
> - debugfs_create_file("regval", 0600, dir, dev, &fops_regval);
> - debugfs_create_file("ampdu_stat", 0400, dir, dev, &mt7601u_ampdu_stat_fops);
> - debugfs_create_file("eeprom_param", 0400, dir, dev, &mt7601u_eeprom_param_fops);
> +void mt7601u_exit_debugfs(struct mt7601u_dev *dev)
> +{
> + if (!dev->root_dir)
> + return;
> + debugfs_remove(dev->root_dir);
debugfs_remove() has IS_ERR_OR_NULL() check, so no need to check for
null here.
> }
> diff --git a/drivers/net/wireless/mediatek/mt7601u/init.c b/drivers/net/wireless/mediatek/mt7601u/init.c
> index 5d9e952b2966..1e905ef2ed19 100644
> --- a/drivers/net/wireless/mediatek/mt7601u/init.c
> +++ b/drivers/net/wireless/mediatek/mt7601u/init.c
> @@ -427,6 +427,9 @@ void mt7601u_cleanup(struct mt7601u_dev *dev)
> mt7601u_stop_hardware(dev);
> mt7601u_dma_cleanup(dev);
> mt7601u_mcu_cmd_deinit(dev);
> +#ifdef CONFIG_DEBUG_FS
> + mt7601u_exit_debugfs(dev);
> +#endif
> }
>
> struct mt7601u_dev *mt7601u_alloc_device(struct device *pdev)
> @@ -625,7 +628,9 @@ int mt7601u_register_device(struct mt7601u_dev *dev)
> if (ret)
> return ret;
>
> +#ifdef CONFIG_DEBUG_FS
> mt7601u_init_debugfs(dev);
> +#endif
Are these two ifdefs really needed? debugfs functions are empty
functions when CONFIG_DEBUG_FS is disabled.
> --- a/drivers/net/wireless/mediatek/mt7601u/mt7601u.h
> +++ b/drivers/net/wireless/mediatek/mt7601u/mt7601u.h
> @@ -242,6 +242,9 @@ struct mt7601u_dev {
> u32 rf_pa_mode[2];
>
> struct mac_stats stats;
> +#ifdef CONFIG_DEBUG_FS
> + struct dentry *root_dir;
> +#endif
I would remove this ifdef, it's just saving one pointer size. Less
ifdefs we have the better.
--
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