diff options
| author | Chunfeng Yun <chunfeng.yun@mediatek.com> | 2019-04-17 16:28:21 +0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-04-19 14:24:26 +0200 |
| commit | 1567d661b90ff670b61bf0b8461afd2dac4a4b7c (patch) | |
| tree | 6b7738b354606ae2d683ac51186a83c1203c17b0 /drivers/usb/mtu3/mtu3_plat.c | |
| parent | fcafadf71a252009f1d0663b8fcf4bd57f4f2c66 (diff) | |
| download | linux-next-1567d661b90ff670b61bf0b8461afd2dac4a4b7c.tar.gz | |
usb: mtu3: get optional clock by devm_clk_get_optional()
Use devm_clk_get_optional() to get optional clock instead of
optional_clk_get() which uses devm_clk_get() to get clock and
checks for -EPROBE_DEFER but not -ENOENT as devm_clk_get_optional()
does, in fact, only ignoring -ENOENT will cover more errors, so
the replacement doesn't change original purpose.
Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com>
Reviewed-by: Matthias Brugger <matthias.bgg@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/usb/mtu3/mtu3_plat.c')
| -rw-r--r-- | drivers/usb/mtu3/mtu3_plat.c | 19 |
1 files changed, 3 insertions, 16 deletions
diff --git a/drivers/usb/mtu3/mtu3_plat.c b/drivers/usb/mtu3/mtu3_plat.c index dca8bd864e63..fd0f6c5dfbc1 100644 --- a/drivers/usb/mtu3/mtu3_plat.c +++ b/drivers/usb/mtu3/mtu3_plat.c @@ -211,19 +211,6 @@ static void ssusb_ip_sw_reset(struct ssusb_mtk *ssusb) mtu3_setbits(ssusb->ippc_base, U3D_SSUSB_IP_PW_CTRL2, SSUSB_IP_DEV_PDN); } -/* ignore the error if the clock does not exist */ -static struct clk *get_optional_clk(struct device *dev, const char *id) -{ - struct clk *opt_clk; - - opt_clk = devm_clk_get(dev, id); - /* ignore error number except EPROBE_DEFER */ - if (IS_ERR(opt_clk) && (PTR_ERR(opt_clk) != -EPROBE_DEFER)) - opt_clk = NULL; - - return opt_clk; -} - static int get_ssusb_rscs(struct platform_device *pdev, struct ssusb_mtk *ssusb) { struct device_node *node = pdev->dev.of_node; @@ -245,15 +232,15 @@ static int get_ssusb_rscs(struct platform_device *pdev, struct ssusb_mtk *ssusb) return PTR_ERR(ssusb->sys_clk); } - ssusb->ref_clk = get_optional_clk(dev, "ref_ck"); + ssusb->ref_clk = devm_clk_get_optional(dev, "ref_ck"); if (IS_ERR(ssusb->ref_clk)) return PTR_ERR(ssusb->ref_clk); - ssusb->mcu_clk = get_optional_clk(dev, "mcu_ck"); + ssusb->mcu_clk = devm_clk_get_optional(dev, "mcu_ck"); if (IS_ERR(ssusb->mcu_clk)) return PTR_ERR(ssusb->mcu_clk); - ssusb->dma_clk = get_optional_clk(dev, "dma_ck"); + ssusb->dma_clk = devm_clk_get_optional(dev, "dma_ck"); if (IS_ERR(ssusb->dma_clk)) return PTR_ERR(ssusb->dma_clk); |