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| author |   Amjad Ouled-Ameur <aouledameur@baylibre.com> | 2022-01-11 10:52:53 +0100 |
|---|---|---|
| committer |   Vinod Koul <vkoul@kernel.org> | 2022-01-27 11:56:54 +0530 |
| commit | 2f87727130ce17ffefecd0895eeebf22d5a36f6f (patch) | |
| tree | 58193167ba877123950aa9b8c0453fa76704eea0 /drivers/phy/amlogic | |
| parent | phy: freescale: i.MX8 PHYs should depend on ARCH_MXC && ARM64 (diff) | |
| download | linux-dev-2f87727130ce17ffefecd0895eeebf22d5a36f6f.tar.xz linux-dev-2f87727130ce17ffefecd0895eeebf22d5a36f6f.zip | |
phy: amlogic: phy-meson-gxl-usb2: fix shared reset controller use
Use reset_control_rearm() call if an error occurs in case
phy_meson_gxl_usb2_init() fails after reset() has been called ; or in case
phy_meson_gxl_usb2_exit() is called i.e the resource is no longer used
and the reset line may be triggered again by other devices.
reset_control_rearm() keeps use of triggered_count sane in the reset
framework. Therefore, use of reset_control_reset() on shared reset line
should be balanced with reset_control_rearm().
Signed-off-by: Amjad Ouled-Ameur <aouledameur@baylibre.com>
Reported-by: Jerome Brunet <jbrunet@baylibre.com>
Reviewed-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Reviewed-by: Philipp Zabel <p.zabel@pengutronix.de>
Acked-by: Neil Armstrong <narmstrong@baylibre.com>
Link: https://lore.kernel.org/r/20220111095255.176141-2-aouledameur@baylibre.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Diffstat (limited to 'drivers/phy/amlogic')
| -rw-r--r-- | drivers/phy/amlogic/phy-meson-gxl-usb2.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/drivers/phy/amlogic/phy-meson-gxl-usb2.c b/drivers/phy/amlogic/phy-meson-gxl-usb2.c index 2b3c0d730f20..db17c3448bfe 100644 --- a/drivers/phy/amlogic/phy-meson-gxl-usb2.c +++ b/drivers/phy/amlogic/phy-meson-gxl-usb2.c @@ -114,8 +114,10 @@ static int phy_meson_gxl_usb2_init(struct phy *phy) return ret; ret = clk_prepare_enable(priv->clk); - if (ret) + if (ret) { + reset_control_rearm(priv->reset); return ret; + } return 0; } @@ -125,6 +127,7 @@ static int phy_meson_gxl_usb2_exit(struct phy *phy) struct phy_meson_gxl_usb2_priv *priv = phy_get_drvdata(phy); clk_disable_unprepare(priv->clk); + reset_control_rearm(priv->reset); return 0; } |