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| author | Jinjie Ruan <ruanjinjie@huawei.com> | 2023-09-01 15:52:31 +0800 |
|---|---|---|
| committer | Vinod Koul <vkoul@kernel.org> | 2023-09-21 16:14:22 +0200 |
| commit | 6ee8a9a772b5abd9a9791123ca7aee2dbf126d5f (patch) | |
| tree | 41b8006f146fdbbb505588d28de18d839279866c /drivers/phy | |
| parent | 426e05ce126e8febc21fae643139a1072d2670ad (diff) | |
| download | linux-stable-6ee8a9a772b5abd9a9791123ca7aee2dbf126d5f.tar.gz linux-stable-6ee8a9a772b5abd9a9791123ca7aee2dbf126d5f.tar.bz2 linux-stable-6ee8a9a772b5abd9a9791123ca7aee2dbf126d5f.zip | |
phy: realtek: usb: Drop unnecessary error check for debugfs_create_dir()
Both debugfs_create_dir() and debugfs_create_file() return ERR_PTR
and never return NULL.
As Greg suggested, this patch removes the error checking for
debugfs_create_dir in phy-rtk-usb2.c and phy-rtk-usb3.c. This is because
the DebugFS kernel API is developed in a way that the caller can safely
ignore the errors that occur during the creation of DebugFS nodes. The
debugfs APIs have a IS_ERR() judge in start_creating() which can handle it
gracefully. So these checks are unnecessary.
Fixes: 134e6d25f6bd ("phy: realtek: usb: Add driver for the Realtek SoC USB 2.0 PHY")
Fixes: adda6e82a7de ("phy: realtek: usb: Add driver for the Realtek SoC USB 3.0 PHY")
Signed-off-by: Jinjie Ruan <ruanjinjie@huawei.com>
Suggested-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Link: https://lore.kernel.org/r/20230901075231.1368947-1-ruanjinjie@huawei.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Diffstat (limited to 'drivers/phy')
| -rw-r--r-- | drivers/phy/realtek/phy-rtk-usb2.c | 10 | ||||
| -rw-r--r-- | drivers/phy/realtek/phy-rtk-usb3.c | 10 |
2 files changed, 4 insertions, 16 deletions
diff --git a/drivers/phy/realtek/phy-rtk-usb2.c b/drivers/phy/realtek/phy-rtk-usb2.c index 5e7ee060b404..aedc78bd37f7 100644 --- a/drivers/phy/realtek/phy-rtk-usb2.c +++ b/drivers/phy/realtek/phy-rtk-usb2.c @@ -853,17 +853,11 @@ static inline void create_debug_files(struct rtk_phy *rtk_phy) rtk_phy->debug_dir = debugfs_create_dir(dev_name(rtk_phy->dev), phy_debug_root); - if (!rtk_phy->debug_dir) - return; - if (!debugfs_create_file("parameter", 0444, rtk_phy->debug_dir, rtk_phy, - &rtk_usb2_parameter_fops)) - goto file_error; + debugfs_create_file("parameter", 0444, rtk_phy->debug_dir, rtk_phy, + &rtk_usb2_parameter_fops); return; - -file_error: - debugfs_remove_recursive(rtk_phy->debug_dir); } static inline void remove_debug_files(struct rtk_phy *rtk_phy) diff --git a/drivers/phy/realtek/phy-rtk-usb3.c b/drivers/phy/realtek/phy-rtk-usb3.c index 7881f908aade..dfb3122f3f11 100644 --- a/drivers/phy/realtek/phy-rtk-usb3.c +++ b/drivers/phy/realtek/phy-rtk-usb3.c @@ -416,17 +416,11 @@ static inline void create_debug_files(struct rtk_phy *rtk_phy) return; rtk_phy->debug_dir = debugfs_create_dir(dev_name(rtk_phy->dev), phy_debug_root); - if (!rtk_phy->debug_dir) - return; - if (!debugfs_create_file("parameter", 0444, rtk_phy->debug_dir, rtk_phy, - &rtk_usb3_parameter_fops)) - goto file_error; + debugfs_create_file("parameter", 0444, rtk_phy->debug_dir, rtk_phy, + &rtk_usb3_parameter_fops); return; - -file_error: - debugfs_remove_recursive(rtk_phy->debug_dir); } static inline void remove_debug_files(struct rtk_phy *rtk_phy) |