6.6-stable review patch. If anyone has any objections, please let me know.
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From: Christophe JAILLET christophe.jaillet@wanadoo.fr
[ Upstream commit 662bb179d3381c7c069e44bb177396bcaee31cc8 ]
If an error occurs after the reset_control_deassert(), reset_control_assert() must be called, as already done in the remove function.
Use devm_add_action_or_reset() to add the missing call and simplify the .remove() function accordingly.
While at it, drop struct rcar_gen3_chan::rstc as it is not used aymore.
[claudiu.beznea: removed "struct reset_control *rstc = data;" from rcar_gen3_reset_assert(), dropped struct rcar_gen3_chan::rstc]
Fixes: 4eae16375357 ("phy: renesas: rcar-gen3-usb2: Add support to initialize the bus") Signed-off-by: Christophe JAILLET christophe.jaillet@wanadoo.fr Reviewed-by: Biju Das biju.das.jz@bp.renesas.com Reviewed-by: Geert Uytterhoeven geert+renesas@glider.be Tested-by: Wolfram Sang wsa+renesas@sang-engineering.com Signed-off-by: Claudiu Beznea claudiu.beznea.uj@bp.renesas.com Link: https://patch.msgid.link/20251023135810.1688415-3-claudiu.beznea.uj@bp.renes... Signed-off-by: Vinod Koul vkoul@kernel.org Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/phy/renesas/phy-rcar-gen3-usb2.c | 20 ++++++++++++++------ 1 file changed, 14 insertions(+), 6 deletions(-)
diff --git a/drivers/phy/renesas/phy-rcar-gen3-usb2.c b/drivers/phy/renesas/phy-rcar-gen3-usb2.c index 9a6391361a0be..89a9693c9f577 100644 --- a/drivers/phy/renesas/phy-rcar-gen3-usb2.c +++ b/drivers/phy/renesas/phy-rcar-gen3-usb2.c @@ -117,7 +117,6 @@ struct rcar_gen3_chan { struct extcon_dev *extcon; struct rcar_gen3_phy rphys[NUM_OF_PHYS]; struct regulator *vbus; - struct reset_control *rstc; struct work_struct work; spinlock_t lock; /* protects access to hardware and driver data structure. */ enum usb_dr_mode dr_mode; @@ -658,21 +657,31 @@ static enum usb_dr_mode rcar_gen3_get_dr_mode(struct device_node *np) return candidate; }
+static void rcar_gen3_reset_assert(void *data) +{ + reset_control_assert(data); +} + static int rcar_gen3_phy_usb2_init_bus(struct rcar_gen3_chan *channel) { struct device *dev = channel->dev; + struct reset_control *rstc; int ret; u32 val;
- channel->rstc = devm_reset_control_array_get_shared(dev); - if (IS_ERR(channel->rstc)) - return PTR_ERR(channel->rstc); + rstc = devm_reset_control_array_get_shared(dev); + if (IS_ERR(rstc)) + return PTR_ERR(rstc);
ret = pm_runtime_resume_and_get(dev); if (ret) return ret;
- ret = reset_control_deassert(channel->rstc); + ret = reset_control_deassert(rstc); + if (ret) + goto rpm_put; + + ret = devm_add_action_or_reset(dev, rcar_gen3_reset_assert, rstc); if (ret) goto rpm_put;
@@ -814,7 +823,6 @@ static void rcar_gen3_phy_usb2_remove(struct platform_device *pdev) if (channel->is_otg_channel) device_remove_file(&pdev->dev, &dev_attr_role);
- reset_control_assert(channel->rstc); pm_runtime_disable(&pdev->dev); };