From ccc3264c2481c9bcbacfe935dc024aaab4423204 Mon Sep 17 00:00:00 2001 From: Yoshihiro Shimoda Date: Tue, 25 Jun 2019 14:38:48 +0900 Subject: [PATCH] usb: renesas_usbhs: Avoid to write platform_data's value The very old commit 482982062f1b ("usb: gadget: renesas_usbhs: bugfix: don't modify platform data") changed to use copied whole structures values to fix the "hung-up" issue. However, we also can fix the issue if the driver copies the get_vbus function pointer to the driver's value. So, this patch adds get_vbus member into struct usbhs_mod_info and use the pointer instead of struct renesas_usbhs_platform_callback. Signed-off-by: Yoshihiro Shimoda Signed-off-by: Greg Kroah-Hartman --- drivers/usb/renesas_usbhs/common.c | 4 +++- drivers/usb/renesas_usbhs/mod.c | 11 +++++++++-- drivers/usb/renesas_usbhs/mod.h | 7 +++++++ drivers/usb/renesas_usbhs/mod_gadget.c | 4 ++-- 4 files changed, 21 insertions(+), 5 deletions(-) diff --git a/drivers/usb/renesas_usbhs/common.c b/drivers/usb/renesas_usbhs/common.c index f6b136a4f91e..739fe4b4c1d5 100644 --- a/drivers/usb/renesas_usbhs/common.c +++ b/drivers/usb/renesas_usbhs/common.c @@ -448,7 +448,7 @@ static void usbhsc_hotplug(struct usbhs_priv *priv) /* * get vbus status from platform */ - enable = usbhs_platform_call(priv, get_vbus, pdev); + enable = usbhs_mod_info_call(priv, get_vbus, pdev); /* * get id from platform @@ -809,6 +809,8 @@ static int usbhs_probe(struct platform_device *pdev) if (!usbhs_get_dparam(priv, runtime_pwctrl)) { usbhsc_power_ctrl(priv, 1); usbhs_mod_autonomy_mode(priv); + } else { + usbhs_mod_non_autonomy_mode(priv); } /* diff --git a/drivers/usb/renesas_usbhs/mod.c b/drivers/usb/renesas_usbhs/mod.c index 984bb2fff8b8..ddf0153dcf16 100644 --- a/drivers/usb/renesas_usbhs/mod.c +++ b/drivers/usb/renesas_usbhs/mod.c @@ -42,12 +42,19 @@ void usbhs_mod_autonomy_mode(struct usbhs_priv *priv) { struct usbhs_mod_info *info = usbhs_priv_to_modinfo(priv); - info->irq_vbus = usbhsm_autonomy_irq_vbus; - priv->pfunc.get_vbus = usbhsm_autonomy_get_vbus; + info->irq_vbus = usbhsm_autonomy_irq_vbus; + info->get_vbus = usbhsm_autonomy_get_vbus; usbhs_irq_callback_update(priv, NULL); } +void usbhs_mod_non_autonomy_mode(struct usbhs_priv *priv) +{ + struct usbhs_mod_info *info = usbhs_priv_to_modinfo(priv); + + info->get_vbus = priv->pfunc.get_vbus; +} + /* * host / gadget functions * diff --git a/drivers/usb/renesas_usbhs/mod.h b/drivers/usb/renesas_usbhs/mod.h index 6678e8103bb1..65dc19ca528e 100644 --- a/drivers/usb/renesas_usbhs/mod.h +++ b/drivers/usb/renesas_usbhs/mod.h @@ -93,6 +93,12 @@ struct usbhs_mod_info { */ int (*irq_vbus)(struct usbhs_priv *priv, struct usbhs_irq_state *irq_state); + + /* + * This function will be used on any gadget mode. To simplify the code, + * this member is in here. + */ + int (*get_vbus)(struct platform_device *pdev); }; /* @@ -107,6 +113,7 @@ int usbhs_mod_probe(struct usbhs_priv *priv); void usbhs_mod_remove(struct usbhs_priv *priv); void usbhs_mod_autonomy_mode(struct usbhs_priv *priv); +void usbhs_mod_non_autonomy_mode(struct usbhs_priv *priv); /* * status functions diff --git a/drivers/usb/renesas_usbhs/mod_gadget.c b/drivers/usb/renesas_usbhs/mod_gadget.c index 0c1e8fa528fc..4d571a5205e2 100644 --- a/drivers/usb/renesas_usbhs/mod_gadget.c +++ b/drivers/usb/renesas_usbhs/mod_gadget.c @@ -915,8 +915,8 @@ static void usbhs_mod_phy_mode(struct usbhs_priv *priv) { struct usbhs_mod_info *info = &priv->mod_info; - info->irq_vbus = NULL; - priv->pfunc.get_vbus = usbhsm_phy_get_vbus; + info->irq_vbus = NULL; + info->get_vbus = usbhsm_phy_get_vbus; usbhs_irq_callback_update(priv, NULL); }