when multiple instances in use, the debug message is hard to understand as there is no instance name show. this change will show each instance name for debug messages. Signed-off-by: Linyu Yuan <quic_linyyuan@xxxxxxxxxxx> --- v2: split to several changes according to v1 comments v1: https://lore.kernel.org/linux-usb/1679481369-30094-1-git-send-email-quic_linyyuan@xxxxxxxxxxx/ drivers/usb/gadget/function/f_fs.c | 136 +++++++++++++++++++------------------ 1 file changed, 69 insertions(+), 67 deletions(-) diff --git a/drivers/usb/gadget/function/f_fs.c b/drivers/usb/gadget/function/f_fs.c index a4051c8..df67ab5 100644 --- a/drivers/usb/gadget/function/f_fs.c +++ b/drivers/usb/gadget/function/f_fs.c @@ -317,12 +317,12 @@ static int __ffs_ep0_queue_wait(struct ffs_data *ffs, char *data, size_t len) static int __ffs_ep0_stall(struct ffs_data *ffs) { if (ffs->ev.can_stall) { - pr_vdebug("ep0 stall\n"); + pr_vdebug("%s: ep0 stall\n", ffs->dev_name); usb_ep_set_halt(ffs->gadget->ep0); ffs->setup_state = FFS_NO_SETUP; return -EL2HLT; } else { - pr_debug("bogus ep0 stall!\n"); + pr_debug("%s: bogus ep0 stall!\n", ffs->dev_name); return -ESRCH; } } @@ -361,7 +361,7 @@ static ssize_t ffs_ep0_write(struct file *file, const char __user *buf, /* Handle data */ if (ffs->state == FFS_READ_DESCRIPTORS) { - pr_info("read descriptors\n"); + pr_info("%s: read descriptors\n", ffs->dev_name); ret = __ffs_data_got_descs(ffs, data, len); if (ret < 0) break; @@ -369,7 +369,7 @@ static ssize_t ffs_ep0_write(struct file *file, const char __user *buf, ffs->state = FFS_READ_STRINGS; ret = len; } else { - pr_info("read strings\n"); + pr_info("%s: read strings\n", ffs->dev_name); ret = __ffs_data_got_strings(ffs, data, len); if (ret < 0) break; @@ -749,9 +749,9 @@ static ssize_t ffs_copy_to_iter(struct ffs_data *ffs, void *data, int data_len, * aio_read(2) etc. system calls. Writing data to an IN endpoint is not * affected. */ - pr_err("functionfs read size %d > requested size %zd, dropping excess data. " + pr_err("%s: functionfs read size %d > requested size %zd, dropping excess data. " "Align read buffer size to max packet size to avoid the problem.\n", - data_len, ret); + ffs->dev_name, data_len, ret); return ret; } @@ -911,8 +911,8 @@ static ssize_t __ffs_epfile_read_data(struct ffs_epfile *epfile, return -EFAULT; /* See ffs_copy_to_iter for more context. */ - pr_warn("functionfs read size %d > requested size %zd, splitting request into multiple reads.", - data_len, ret); + pr_warn("%s: functionfs read size %d > requested size %zd, splitting request into multiple reads.", + epfile->ffs->dev_name, data_len, ret); data_len -= ret; buf = kmalloc(struct_size(buf, storage, data_len), GFP_KERNEL); @@ -1043,7 +1043,7 @@ static ssize_t ffs_epfile_io(struct file *file, struct ffs_io_data *io_data) * For such reason, we're adding this redundant sanity check * here. */ - WARN(1, "%s: data_len == -EINVAL\n", __func__); + WARN(1, "%s: %s(): data_len == -EINVAL\n", epfile->ffs->dev_name, __func__); ret = -EINVAL; } else if (!io_data->aio) { bool interrupted = false; @@ -1665,7 +1665,7 @@ static void ffs_data_opened(struct ffs_data *ffs) static void ffs_data_put(struct ffs_data *ffs) { if (refcount_dec_and_test(&ffs->ref)) { - pr_info("%s(): freeing\n", __func__); + pr_info("%s: %s(): freeing\n", ffs->dev_name, __func__); ffs_data_clear(ffs); ffs_release_dev(ffs->private_data); BUG_ON(waitqueue_active(&ffs->ev.waitq) || @@ -1942,8 +1942,8 @@ static int ffs_func_eps_enable(struct ffs_function *func) ret = config_ep_by_speed(func->gadget, &func->function, ep->ep); if (ret) { - pr_err("%s: config_ep_by_speed(%s) returned %d\n", - __func__, ep->ep->name, ret); + pr_err("%s: %s(): config_ep_by_speed(%s) returned %d\n", + ffs->dev_name, __func__, ep->ep->name, ret); break; } @@ -2003,14 +2003,14 @@ static int __must_check ffs_do_single_desc(struct ffs_data *ffs, char *data, uns /* At least two bytes are required: length and type */ if (len < 2) { - pr_vdebug("descriptor too short\n"); + pr_vdebug("%s: descriptor too short\n", ffs->dev_name); return -EINVAL; } /* If we have at least as many bytes as the descriptor takes? */ length = _ds->bLength; if (len < length) { - pr_vdebug("descriptor longer then available data\n"); + pr_vdebug("%s: descriptor longer then available data\n", ffs->dev_name); return -EINVAL; } @@ -2018,15 +2018,15 @@ static int __must_check ffs_do_single_desc(struct ffs_data *ffs, char *data, uns #define __entity_check_STRING(val) (val) #define __entity_check_ENDPOINT(val) ((val) & USB_ENDPOINT_NUMBER_MASK) #define __entity(type, val) do { \ - pr_vdebug("entity " #type "(%02x)\n", (val)); \ + pr_vdebug("%s: entity " #type "(%02x)\n", ffs->dev_name, (val)); \ if (!__entity_check_ ##type(val)) { \ - pr_vdebug("invalid entity's value\n"); \ + pr_vdebug("%s: invalid entity's value\n", ffs->dev_name); \ return -EINVAL; \ } \ - ret = entity(ffs, FFS_ ##type, &val, _ds, priv); \ + ret = entity(ffs, FFS_ ##type, &val, _ds, priv); \ if (ret < 0) { \ - pr_debug("entity " #type "(%02x); ret = %d\n", \ - (val), ret); \ + pr_debug("%s: entity " #type "(%02x); ret = %d\n", \ + ffs->dev_name, (val), ret); \ return ret; \ } \ } while (0) @@ -2038,13 +2038,13 @@ static int __must_check ffs_do_single_desc(struct ffs_data *ffs, char *data, uns case USB_DT_STRING: case USB_DT_DEVICE_QUALIFIER: /* function can't have any of those */ - pr_vdebug("descriptor reserved for gadget: %d\n", - _ds->bDescriptorType); + pr_vdebug("%s: descriptor reserved for gadget: %d\n", + ffs->dev_name, _ds->bDescriptorType); return -EINVAL; case USB_DT_INTERFACE: { struct usb_interface_descriptor *ds = (void *)_ds; - pr_vdebug("interface descriptor\n"); + pr_vdebug("%s: interface descriptor\n", ffs->dev_name); if (length != sizeof *ds) goto inv_length; @@ -2057,7 +2057,7 @@ static int __must_check ffs_do_single_desc(struct ffs_data *ffs, char *data, uns case USB_DT_ENDPOINT: { struct usb_endpoint_descriptor *ds = (void *)_ds; - pr_vdebug("endpoint descriptor\n"); + pr_vdebug("%s: endpoint descriptor\n", ffs->dev_name); if (length != USB_DT_ENDPOINT_SIZE && length != USB_DT_ENDPOINT_AUDIO_SIZE) goto inv_length; @@ -2067,18 +2067,18 @@ static int __must_check ffs_do_single_desc(struct ffs_data *ffs, char *data, uns case USB_TYPE_CLASS | 0x01: if (*current_class == USB_INTERFACE_CLASS_HID) { - pr_vdebug("hid descriptor\n"); + pr_vdebug("%s: hid descriptor\n", ffs->dev_name); if (length != sizeof(struct hid_descriptor)) goto inv_length; break; } else if (*current_class == USB_INTERFACE_CLASS_CCID) { - pr_vdebug("ccid descriptor\n"); + pr_vdebug("%s: ccid descriptor\n", ffs->dev_name); if (length != sizeof(struct ccid_descriptor)) goto inv_length; break; } else { - pr_vdebug("unknown descriptor: %d for class %d\n", - _ds->bDescriptorType, *current_class); + pr_vdebug("%s: unknown descriptor: %d for class %d\n", + ffs->dev_name, _ds->bDescriptorType, *current_class); return -EINVAL; } @@ -2089,7 +2089,7 @@ static int __must_check ffs_do_single_desc(struct ffs_data *ffs, char *data, uns case USB_DT_INTERFACE_ASSOCIATION: { struct usb_interface_assoc_descriptor *ds = (void *)_ds; - pr_vdebug("interface association descriptor\n"); + pr_vdebug("%s: interface association descriptor\n", ffs->dev_name); if (length != sizeof *ds) goto inv_length; if (ds->iFunction) @@ -2098,7 +2098,7 @@ static int __must_check ffs_do_single_desc(struct ffs_data *ffs, char *data, uns break; case USB_DT_SS_ENDPOINT_COMP: - pr_vdebug("EP SS companion descriptor\n"); + pr_vdebug("%s: EP SS companion descriptor\n", ffs->dev_name); if (length != sizeof(struct usb_ss_ep_comp_descriptor)) goto inv_length; break; @@ -2109,17 +2109,18 @@ static int __must_check ffs_do_single_desc(struct ffs_data *ffs, char *data, uns case USB_DT_SECURITY: case USB_DT_CS_RADIO_CONTROL: /* TODO */ - pr_vdebug("unimplemented descriptor: %d\n", _ds->bDescriptorType); + pr_vdebug("%s: unimplemented descriptor: %d\n", ffs->dev_name, + _ds->bDescriptorType); return -EINVAL; default: /* We should never be here */ - pr_vdebug("unknown descriptor: %d\n", _ds->bDescriptorType); + pr_vdebug("%s: unknown descriptor: %d\n", ffs->dev_name, _ds->bDescriptorType); return -EINVAL; inv_length: - pr_vdebug("invalid length: %d (descriptor %d)\n", - _ds->bLength, _ds->bDescriptorType); + pr_vdebug("%s: invalid length: %d (descriptor %d)\n", + ffs->dev_name, _ds->bLength, _ds->bDescriptorType); return -EINVAL; } @@ -2148,8 +2149,8 @@ static int __must_check ffs_do_descs(struct ffs_data *ffs, unsigned count, char /* Record "descriptor" entity */ ret = entity(ffs, FFS_DESCRIPTOR, (u8 *)num, (void *)data, priv); if (ret < 0) { - pr_debug("entity DESCRIPTOR(%02lx); ret = %d\n", - num, ret); + pr_debug("%s: entity DESCRIPTOR(%02lx); ret = %d\n", + ffs->dev_name, num, ret); return ret; } @@ -2159,7 +2160,7 @@ static int __must_check ffs_do_descs(struct ffs_data *ffs, unsigned count, char ret = ffs_do_single_desc(ffs, data, len, entity, priv, ¤t_class); if (ret < 0) { - pr_debug("%s returns %d\n", __func__, ret); + pr_debug("%s: %s(): returns %d\n", ffs->dev_name, __func__, ret); return ret; } @@ -2224,11 +2225,12 @@ static int __ffs_do_os_desc_header(struct ffs_data *ffs, enum ffs_os_desc_type * u16 w_index = le16_to_cpu(desc->wIndex); if (bcd_version == 0x1) { - pr_warn("bcdVersion must be 0x0100, stored in Little Endian order. " - "Userspace driver should be fixed, accepting 0x0001 for compatibility.\n"); + pr_warn("%s: bcdVersion must be 0x0100, stored in Little Endian order. " + "Userspace driver should be fixed, accepting 0x0001 for compatibility.\n", + ffs->dev_name); } else if (bcd_version != 0x100) { - pr_vdebug("unsupported os descriptors version: 0x%x\n", - bcd_version); + pr_vdebug("%s: unsupported os descriptors version: 0x%x\n", + ffs->dev_name, bcd_version); return -EINVAL; } switch (w_index) { @@ -2239,7 +2241,7 @@ static int __ffs_do_os_desc_header(struct ffs_data *ffs, enum ffs_os_desc_type * *next_type = FFS_OS_DESC_EXT_PROP; break; default: - pr_vdebug("unsupported os descriptor type: %d", w_index); + pr_vdebug("%s: unsupported os descriptor type: %d", ffs->dev_name, w_index); return -EINVAL; } @@ -2264,7 +2266,7 @@ static int __must_check ffs_do_single_os_desc(struct ffs_data *ffs, char *data, while (feature_count--) { ret = entity(ffs, type, h, data, len, priv); if (ret < 0) { - pr_debug("bad OS descriptor, type: %d\n", type); + pr_debug("%s: bad OS descriptor, type: %d\n", ffs->dev_name, type); return ret; } data += ret; @@ -2302,8 +2304,8 @@ static int __must_check ffs_do_os_descs(struct ffs_data *ffs, unsigned count, ret = __ffs_do_os_desc_header(ffs, &type, desc); if (ret < 0) { - pr_debug("entity OS_DESCRIPTOR(%02lx); ret = %d\n", - num, ret); + pr_debug("%s: entity OS_DESCRIPTOR(%02lx); ret = %d\n", + ffs->dev_name, num, ret); return ret; } /* @@ -2323,7 +2325,7 @@ static int __must_check ffs_do_os_descs(struct ffs_data *ffs, unsigned count, ret = ffs_do_single_os_desc(ffs, data, len, type, feature_count, entity, priv, desc); if (ret < 0) { - pr_debug("%s returns %d\n", __func__, ret); + pr_debug("%s: %s() returns %d\n", ffs->dev_name, __func__, ret); return ret; } @@ -2357,7 +2359,7 @@ static int __ffs_data_do_os_desc(struct ffs_data *ffs, enum ffs_os_desc_type typ * values. We fix it here to avoid returning EINVAL * in response to values we used to accept. */ - pr_debug("usb_ext_compat_desc::Reserved1 forced to 1\n"); + pr_debug("%s: usb_ext_compat_desc::Reserved1 forced to 1\n", ffs->dev_name); d->Reserved1 = 1; } for (i = 0; i < ARRAY_SIZE(d->Reserved2); ++i) @@ -2380,20 +2382,20 @@ static int __ffs_data_do_os_desc(struct ffs_data *ffs, enum ffs_os_desc_type typ type = le32_to_cpu(d->dwPropertyDataType); if (type < USB_EXT_PROP_UNICODE || type > USB_EXT_PROP_UNICODE_MULTI) { - pr_vdebug("unsupported os descriptor property type: %d", - type); + pr_vdebug("%s: unsupported os descriptor property type: %d", + ffs->dev_name, type); return -EINVAL; } pnl = le16_to_cpu(d->wPropertyNameLength); if (length < 14 + pnl) { - pr_vdebug("invalid os descriptor length: %d pnl:%d (descriptor %d)\n", - length, pnl, type); + pr_vdebug("%s: invalid os descriptor length: %d pnl:%d (%d)\n", + ffs->dev_name, length, pnl, type); return -EINVAL; } pdl = le32_to_cpu(*(__le32 *)((u8 *)data + 10 + pnl)); if (length != 14 + pnl + pdl) { - pr_vdebug("invalid os descriptor length: %d pnl:%d pdl:%d (descriptor %d)\n", - length, pnl, pdl, type); + pr_vdebug("%s: invalid os descriptor length: %d pnl:%d pdl:%d (%d)\n", + ffs->dev_name, length, pnl, pdl, type); return -EINVAL; } ++ffs->ms_os_descs_ext_prop_count; @@ -2403,7 +2405,7 @@ static int __ffs_data_do_os_desc(struct ffs_data *ffs, enum ffs_os_desc_type typ } break; default: - pr_vdebug("unknown descriptor: %d\n", type); + pr_vdebug("%s: unknown descriptor: %d\n", ffs->dev_name, type); return -EINVAL; } return length; @@ -2718,7 +2720,7 @@ static void __ffs_event_add(struct ffs_data *ffs, break; default: - WARN(1, "%d: unknown event, this should not happen\n", type); + WARN(1, "%s: %d: unknown event, this should not happen\n", ffs->dev_name, type); return; } @@ -2729,11 +2731,11 @@ static void __ffs_event_add(struct ffs_data *ffs, if ((*ev == rem_type1 || *ev == rem_type2) == neg) *out++ = *ev; else - pr_vdebug("purging event %d\n", *ev); + pr_vdebug("%s: purging event %d\n", ffs->dev_name, *ev); ffs->ev.count = out - ffs->ev.types; } - pr_vdebug("adding event %d\n", type); + pr_vdebug("%s: adding event %d\n", ffs->dev_name, type); ffs->ev.types[ffs->ev.count++] = type; wake_up_locked(&ffs->ev.waitq); if (ffs->ffs_eventfd) @@ -2802,8 +2804,8 @@ static int __ffs_func_bind_do_descs(struct ffs_data *ffs, enum ffs_entity_type t ffs_ep = func->eps + idx; if (ffs_ep->descs[ep_desc_id]) { - pr_err("two %sspeed descriptors for EP %d\n", - speed_names[ep_desc_id], + pr_err("%s: two %sspeed descriptors for EP %d\n", + ffs->dev_name, speed_names[ep_desc_id], ds->bEndpointAddress & USB_ENDPOINT_NUMBER_MASK); return -EINVAL; } @@ -2830,7 +2832,7 @@ static int __ffs_func_bind_do_descs(struct ffs_data *ffs, enum ffs_entity_type t * endpoint descriptors as if they were full speed. */ wMaxPacketSize = ds->wMaxPacketSize; - pr_vdebug("autoconfig\n"); + pr_vdebug("%s: autoconfig\n", ffs->dev_name); ep = usb_ep_autoconfig(func->gadget, ds); if (!ep) return -ENOTSUPP; @@ -2911,7 +2913,7 @@ static int __ffs_func_bind_do_nums(struct ffs_data *ffs, enum ffs_entity_type ty break; } - pr_vdebug("%02x -> %02x\n", *valuep, newValue); + pr_vdebug("%s: %02x -> %02x\n", ffs->dev_name, *valuep, newValue); *valuep = newValue; return 0; } @@ -2989,7 +2991,7 @@ static int __ffs_func_bind_do_os_desc(struct ffs_data *ffs, enum ffs_os_desc_typ } break; default: - pr_vdebug("unknown descriptor: %d\n", type); + pr_vdebug("%s: unknown descriptor: %d\n", ffs->dev_name, type); } return length; @@ -3283,11 +3285,11 @@ static int ffs_func_setup(struct usb_function *f, unsigned long flags; int ret; - pr_vdebug("creq->bRequestType = %02x\n", creq->bRequestType); - pr_vdebug("creq->bRequest = %02x\n", creq->bRequest); - pr_vdebug("creq->wValue = %04x\n", le16_to_cpu(creq->wValue)); - pr_vdebug("creq->wIndex = %04x\n", le16_to_cpu(creq->wIndex)); - pr_vdebug("creq->wLength = %04x\n", le16_to_cpu(creq->wLength)); + pr_vdebug("%s: creq->bRequestType = %02x\n", ffs->dev_name, creq->bRequestType); + pr_vdebug("%s: creq->bRequest = %02x\n", ffs->dev_name, creq->bRequest); + pr_vdebug("%s: creq->wValue = %04x\n", ffs->dev_name, le16_to_cpu(creq->wValue)); + pr_vdebug("%s: creq->wIndex = %04x\n", ffs->dev_name, le16_to_cpu(creq->wIndex)); + pr_vdebug("%s: creq->wLength = %04x\n", ffs->dev_name, le16_to_cpu(creq->wLength)); /* * Most requests directed to interface go through here @@ -3790,7 +3792,7 @@ static char *ffs_prepare_buffer(struct ffs_data *ffs, const char __user *buf, si if (IS_ERR(data)) return data; - pr_vdebug("Buffer from user space:\n"); + pr_vdebug("%s: Buffer from user space:\n", ffs->dev_name); ffs_dump_mem("", data, len); return data; -- 2.7.4
