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Revert "usb: gadget: Properly configure the device for remote wakeup"

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This reverts commit ed9fdc82ca which is
commit b93c2a68f3 upstream.

It breaks the Android kernel abi and can be brought back in the future
in an abi-safe way if it is really needed.

Bug: 161946584
Change-Id: Ib55f9062147895c79170426d3455dcef12d0f25f
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
This commit is contained in:
Greg Kroah-Hartman
2024-05-14 12:49:24 +00:00
parent 2e193db1b4
commit 045f29a0bd
6 changed files with 0 additions and 63 deletions
Download Patch File Download Diff File Expand all files Collapse all files

18
drivers/usb/gadget/composite.c
View File

@@ -511,19 +511,6 @@ static u8 encode_bMaxPower(enum usb_device_speed speed,
return min(val, 900U) / 8;
}
void check_remote_wakeup_config(struct usb_gadget *g,
struct usb_configuration *c)
{
if (USB_CONFIG_ATT_WAKEUP & c->bmAttributes) {
/* Reset the rw bit if gadget is not capable of it */
if (!g->wakeup_capable && g->ops->set_remote_wakeup) {
WARN(c->cdev, "Clearing wakeup bit for config c.%d\n",
c->bConfigurationValue);
c->bmAttributes &= ~USB_CONFIG_ATT_WAKEUP;
}
}
}
static int config_buf(struct usb_configuration *config,
enum usb_device_speed speed, void *buf, u8 type)
{
@@ -972,11 +959,6 @@ static int set_config(struct usb_composite_dev *cdev,
power = min(power, 500U);
else
power = min(power, 900U);
if (USB_CONFIG_ATT_WAKEUP & c->bmAttributes)
usb_gadget_set_remote_wakeup(gadget, 1);
else
usb_gadget_set_remote_wakeup(gadget, 0);
done:
if (power <= USB_SELF_POWER_VBUS_MAX_DRAW)
usb_gadget_set_selfpowered(gadget);

3
drivers/usb/gadget/configfs.c
View File

@@ -1408,9 +1408,6 @@ static int configfs_composite_bind(struct usb_gadget *gadget,
if (gadget_is_otg(gadget))
c->descriptors = otg_desc;
/* Properly configure the bmAttributes wakeup bit */
check_remote_wakeup_config(gadget, c);
cfg = container_of(c, struct config_usb_cfg, c);
if (!list_empty(&cfg->string_list)) {
i = 0;

27
drivers/usb/gadget/udc/core.c
View File

@@ -525,33 +525,6 @@ out:
}
EXPORT_SYMBOL_GPL(usb_gadget_wakeup);
/**
* usb_gadget_set_remote_wakeup - configures the device remote wakeup feature.
* @gadget:the device being configured for remote wakeup
* @set:value to be configured.
*
* set to one to enable remote wakeup feature and zero to disable it.
*
* returns zero on success, else negative errno.
*/
int usb_gadget_set_remote_wakeup(struct usb_gadget *gadget, int set)
{
int ret = 0;
if (!gadget->ops->set_remote_wakeup) {
ret = -EOPNOTSUPP;
goto out;
}
ret = gadget->ops->set_remote_wakeup(gadget, set);
out:
trace_usb_gadget_set_remote_wakeup(gadget, ret);
return ret;
}
EXPORT_SYMBOL_GPL(usb_gadget_set_remote_wakeup);
/**
* usb_gadget_set_selfpowered - sets the device selfpowered feature.
* @gadget:the device being declared as self-powered

5
drivers/usb/gadget/udc/trace.h
View File

@@ -91,11 +91,6 @@ DEFINE_EVENT(udc_log_gadget, usb_gadget_wakeup,
TP_ARGS(g, ret)
);
DEFINE_EVENT(udc_log_gadget, usb_gadget_set_remote_wakeup,
TP_PROTO(struct usb_gadget *g, int ret),
TP_ARGS(g, ret)
);
DEFINE_EVENT(udc_log_gadget, usb_gadget_set_selfpowered,
TP_PROTO(struct usb_gadget *g, int ret),
TP_ARGS(g, ret)

2
include/linux/usb/composite.h
View File

@@ -412,8 +412,6 @@ extern int composite_dev_prepare(struct usb_composite_driver *composite,
extern int composite_os_desc_req_prepare(struct usb_composite_dev *cdev,
struct usb_ep *ep0);
void composite_dev_cleanup(struct usb_composite_dev *cdev);
void check_remote_wakeup_config(struct usb_gadget *g,
struct usb_configuration *c);
static inline struct usb_composite_driver *to_cdriver(
struct usb_gadget_driver *gdrv)

8
include/linux/usb/gadget.h
View File

@@ -315,7 +315,6 @@ struct usb_udc;
struct usb_gadget_ops {
int (*get_frame)(struct usb_gadget *);
int (*wakeup)(struct usb_gadget *);
int (*set_remote_wakeup)(struct usb_gadget *, int set);
int (*set_selfpowered) (struct usb_gadget *, int is_selfpowered);
int (*vbus_session) (struct usb_gadget *, int is_active);
int (*vbus_draw) (struct usb_gadget *, unsigned mA);
@@ -395,8 +394,6 @@ struct usb_gadget_ops {
* @connected: True if gadget is connected.
* @lpm_capable: If the gadget max_speed is FULL or HIGH, this flag
* indicates that it supports LPM as per the LPM ECN & errata.
* @wakeup_capable: True if gadget is capable of sending remote wakeup.
* @wakeup_armed: True if gadget is armed by the host for remote wakeup.
* @irq: the interrupt number for device controller.
* @id_number: a unique ID number for ensuring that gadget names are distinct
*
@@ -458,8 +455,6 @@ struct usb_gadget {
unsigned deactivated:1;
unsigned connected:1;
unsigned lpm_capable:1;
unsigned wakeup_capable:1;
unsigned wakeup_armed:1;
int irq;
int id_number;
};
@@ -616,7 +611,6 @@ static inline int gadget_is_otg(struct usb_gadget *g)
#if IS_ENABLED(CONFIG_USB_GADGET)
int usb_gadget_frame_number(struct usb_gadget *gadget);
int usb_gadget_wakeup(struct usb_gadget *gadget);
int usb_gadget_set_remote_wakeup(struct usb_gadget *gadget, int set);
int usb_gadget_set_selfpowered(struct usb_gadget *gadget);
int usb_gadget_clear_selfpowered(struct usb_gadget *gadget);
int usb_gadget_vbus_connect(struct usb_gadget *gadget);
@@ -632,8 +626,6 @@ static inline int usb_gadget_frame_number(struct usb_gadget *gadget)
{ return 0; }
static inline int usb_gadget_wakeup(struct usb_gadget *gadget)
{ return 0; }
static inline int usb_gadget_set_remote_wakeup(struct usb_gadget *gadget, int set)
{ return 0; }
static inline int usb_gadget_set_selfpowered(struct usb_gadget *gadget)
{ return 0; }
static inline int usb_gadget_clear_selfpowered(struct usb_gadget *gadget)