AcoSail/kernel_optimize_test
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[PATCH] USBATM: trivial modifications

Browse Source 
Formatting, changes to variable names, comments, log level changes,
printk rate limiting.

Signed-off-by:	Duncan Sands <baldrick@free.fr>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Duncan Sands 2006-01-17 11:15:13 +01:00 committed by Greg Kroah-Hartman
parent 7ce08c93e3
commit 0ec3c7e856
5 changed files with 153 additions and 118 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

69
drivers/usb/atm/cxacru.c
View File

@ -352,7 +352,6 @@ static int cxacru_atm_start(struct usbatm_data *usbatm_instance,
struct atm_dev *atm_dev)
{
struct cxacru_data *instance = usbatm_instance->driver_data;
struct device *dev = &usbatm_instance->usb_intf->dev;
/*
struct atm_dev *atm_dev = usbatm_instance->atm_dev;
*/
@ -364,14 +363,14 @@ static int cxacru_atm_start(struct usbatm_data *usbatm_instance,
ret = cxacru_cm(instance, CM_REQUEST_CARD_GET_MAC_ADDRESS, NULL, 0,
atm_dev->esi, sizeof(atm_dev->esi));
if (ret < 0) {
dev_err(dev, "cxacru_atm_start: CARD_GET_MAC_ADDRESS returned %d\n", ret);
atm_err(usbatm_instance, "cxacru_atm_start: CARD_GET_MAC_ADDRESS returned %d\n", ret);
return ret;
}
/* start ADSL */
ret = cxacru_cm(instance, CM_REQUEST_CHIP_ADSL_LINE_START, NULL, 0, NULL, 0);
if (ret < 0) {
dev_err(dev, "cxacru_atm_start: CHIP_ADSL_LINE_START returned %d\n", ret);
atm_err(usbatm_instance, "cxacru_atm_start: CHIP_ADSL_LINE_START returned %d\n", ret);
return ret;
}
@ -383,13 +382,13 @@ static int cxacru_atm_start(struct usbatm_data *usbatm_instance,
static void cxacru_poll_status(struct cxacru_data *instance)
{
u32 buf[CXINF_MAX] = {};
struct device *dev = &instance->usbatm->usb_intf->dev;
struct atm_dev *atm_dev = instance->usbatm->atm_dev;
struct usbatm_data *usbatm = instance->usbatm;
struct atm_dev *atm_dev = usbatm->atm_dev;
int ret;
ret = cxacru_cm_get_array(instance, CM_REQUEST_CARD_INFO_GET, buf, CXINF_MAX);
if (ret < 0) {
dev_warn(dev, "poll status: error %d\n", ret);
atm_warn(usbatm, "poll status: error %d\n", ret);
goto reschedule;
}
@ -400,50 +399,50 @@ static void cxacru_poll_status(struct cxacru_data *instance)
switch (instance->line_status) {
case 0:
atm_dev->signal = ATM_PHY_SIG_LOST;
dev_info(dev, "ADSL line: down\n");
atm_info(usbatm, "ADSL line: down\n");
break;
case 1:
atm_dev->signal = ATM_PHY_SIG_LOST;
dev_info(dev, "ADSL line: attemtping to activate\n");
atm_info(usbatm, "ADSL line: attempting to activate\n");
break;
case 2:
atm_dev->signal = ATM_PHY_SIG_LOST;
dev_info(dev, "ADSL line: training\n");
atm_info(usbatm, "ADSL line: training\n");
break;
case 3:
atm_dev->signal = ATM_PHY_SIG_LOST;
dev_info(dev, "ADSL line: channel analysis\n");
atm_info(usbatm, "ADSL line: channel analysis\n");
break;
case 4:
atm_dev->signal = ATM_PHY_SIG_LOST;
dev_info(dev, "ADSL line: exchange\n");
atm_info(usbatm, "ADSL line: exchange\n");
break;
case 5:
atm_dev->link_rate = buf[CXINF_DOWNSTREAM_RATE] * 1000 / 424;
atm_dev->signal = ATM_PHY_SIG_FOUND;
dev_info(dev, "ADSL line: up (%d kb/s down | %d kb/s up)\n",
atm_info(usbatm, "ADSL line: up (%d kb/s down | %d kb/s up)\n",
buf[CXINF_DOWNSTREAM_RATE], buf[CXINF_UPSTREAM_RATE]);
break;
case 6:
atm_dev->signal = ATM_PHY_SIG_LOST;
dev_info(dev, "ADSL line: waiting\n");
atm_info(usbatm, "ADSL line: waiting\n");
break;
case 7:
atm_dev->signal = ATM_PHY_SIG_LOST;
dev_info(dev, "ADSL line: initializing\n");
atm_info(usbatm, "ADSL line: initializing\n");
break;
default:
atm_dev->signal = ATM_PHY_SIG_UNKNOWN;
dev_info(dev, "Unknown line state %02x\n", instance->line_status);
atm_info(usbatm, "Unknown line state %02x\n", instance->line_status);
break;
}
reschedule:
@ -504,8 +503,8 @@ static void cxacru_upload_firmware(struct cxacru_data *instance,
{
int ret;
int off;
struct usb_device *usb_dev = instance->usbatm->usb_dev;
struct device *dev = &instance->usbatm->usb_intf->dev;
struct usbatm_data *usbatm = instance->usbatm;
struct usb_device *usb_dev = usbatm->usb_dev;
u16 signature[] = { usb_dev->descriptor.idVendor, usb_dev->descriptor.idProduct };
u32 val;
@ -515,7 +514,7 @@ static void cxacru_upload_firmware(struct cxacru_data *instance,
val = cpu_to_le32(instance->modem_type->pll_f_clk);
ret = cxacru_fw(usb_dev, FW_WRITE_MEM, 0x2, 0x0, PLLFCLK_ADDR, (u8 *) &val, 4);
if (ret) {
dev_err(dev, "FirmwarePllFClkValue failed: %d\n", ret);
usb_err(usbatm, "FirmwarePllFClkValue failed: %d\n", ret);
return;
}
@ -523,7 +522,7 @@ static void cxacru_upload_firmware(struct cxacru_data *instance,
val = cpu_to_le32(instance->modem_type->pll_b_clk);
ret = cxacru_fw(usb_dev, FW_WRITE_MEM, 0x2, 0x0, PLLBCLK_ADDR, (u8 *) &val, 4);
if (ret) {
dev_err(dev, "FirmwarePllBClkValue failed: %d\n", ret);
usb_err(usbatm, "FirmwarePllBClkValue failed: %d\n", ret);
return;
}
@ -531,14 +530,14 @@ static void cxacru_upload_firmware(struct cxacru_data *instance,
val = cpu_to_le32(SDRAM_ENA);
ret = cxacru_fw(usb_dev, FW_WRITE_MEM, 0x2, 0x0, SDRAMEN_ADDR, (u8 *) &val, 4);
if (ret) {
dev_err(dev, "Enable SDRAM failed: %d\n", ret);
usb_err(usbatm, "Enable SDRAM failed: %d\n", ret);
return;
}
/* Firmware */
ret = cxacru_fw(usb_dev, FW_WRITE_MEM, 0x2, 0x0, FW_ADDR, fw->data, fw->size);
if (ret) {
dev_err(dev, "Firmware upload failed: %d\n", ret);
usb_err(usbatm, "Firmware upload failed: %d\n", ret);
return;
}
@ -546,7 +545,7 @@ static void cxacru_upload_firmware(struct cxacru_data *instance,
if (instance->modem_type->boot_rom_patch) {
ret = cxacru_fw(usb_dev, FW_WRITE_MEM, 0x2, 0x0, BR_ADDR, bp->data, bp->size);
if (ret) {
dev_err(dev, "Boot ROM patching failed: %d\n", ret);
usb_err(usbatm, "Boot ROM patching failed: %d\n", ret);
return;
}
}
@ -554,7 +553,7 @@ static void cxacru_upload_firmware(struct cxacru_data *instance,
/* Signature */
ret = cxacru_fw(usb_dev, FW_WRITE_MEM, 0x2, 0x0, SIG_ADDR, (u8 *) signature, 4);
if (ret) {
dev_err(dev, "Signature storing failed: %d\n", ret);
usb_err(usbatm, "Signature storing failed: %d\n", ret);
return;
}
@ -566,7 +565,7 @@ static void cxacru_upload_firmware(struct cxacru_data *instance,
ret = cxacru_fw(usb_dev, FW_GOTO_MEM, 0x0, 0x0, FW_ADDR, NULL, 0);
}
if (ret) {
dev_err(dev, "Passing control to firmware failed: %d\n", ret);
usb_err(usbatm, "Passing control to firmware failed: %d\n", ret);
return;
}
@ -580,7 +579,7 @@ static void cxacru_upload_firmware(struct cxacru_data *instance,
ret = cxacru_cm(instance, CM_REQUEST_CARD_GET_STATUS, NULL, 0, NULL, 0);
if (ret < 0) {
dev_err(dev, "modem failed to initialize: %d\n", ret);
usb_err(usbatm, "modem failed to initialize: %d\n", ret);
return;
}
@ -597,7 +596,7 @@ static void cxacru_upload_firmware(struct cxacru_data *instance,
ret = cxacru_cm(instance, CM_REQUEST_CARD_DATA_SET,
(u8 *) buf, len, NULL, 0);
if (ret < 0) {
dev_err(dev, "load config data failed: %d\n", ret);
usb_err(usbatm, "load config data failed: %d\n", ret);
return;
}
}
@ -608,18 +607,19 @@ static void cxacru_upload_firmware(struct cxacru_data *instance,
static int cxacru_find_firmware(struct cxacru_data *instance,
char* phase, const struct firmware **fw_p)
{
struct device *dev = &instance->usbatm->usb_intf->dev;
struct usbatm_data *usbatm = instance->usbatm;
struct device *dev = &usbatm->usb_intf->dev;
char buf[16];
sprintf(buf, "cxacru-%s.bin", phase);
dbg("cxacru_find_firmware: looking for %s", buf);
if (request_firmware(fw_p, buf, dev)) {
dev_dbg(dev, "no stage %s firmware found\n", phase);
usb_dbg(usbatm, "no stage %s firmware found\n", phase);
return -ENOENT;
}
dev_info(dev, "found firmware %s\n", buf);
usb_info(usbatm, "found firmware %s\n", buf);
return 0;
}
@ -627,20 +627,19 @@ static int cxacru_find_firmware(struct cxacru_data *instance,
static int cxacru_heavy_init(struct usbatm_data *usbatm_instance,
struct usb_interface *usb_intf)
{
struct device *dev = &usbatm_instance->usb_intf->dev;
const struct firmware *fw, *bp, *cf;
struct cxacru_data *instance = usbatm_instance->driver_data;
int ret = cxacru_find_firmware(instance, "fw", &fw);
if (ret) {
dev_warn(dev, "firmware (cxacru-fw.bin) unavailable (hotplug misconfiguration?)\n");
usb_warn(usbatm_instance, "firmware (cxacru-fw.bin) unavailable (system misconfigured?)\n");
return ret;
}
if (instance->modem_type->boot_rom_patch) {
ret = cxacru_find_firmware(instance, "bp", &bp);
if (ret) {
dev_warn(dev, "boot ROM patch (cxacru-bp.bin) unavailable (hotplug misconfiguration?)\n");
usb_warn(usbatm_instance, "boot ROM patch (cxacru-bp.bin) unavailable (system misconfigured?)\n");
release_firmware(fw);
return ret;
}
@ -787,12 +786,12 @@ static const struct usb_device_id cxacru_usb_ids[] = {
{ /* V = Conexant P = ADSL modem (Hasbani project) */
USB_DEVICE(0x0572, 0xcb00), .driver_info = (unsigned long) &cxacru_cb00
},
{ /* V = Conexant P = ADSL modem (Well PTI-800 */
USB_DEVICE(0x0572, 0xcb02), .driver_info = (unsigned long) &cxacru_cb00
},
{ /* V = Conexant P = ADSL modem */
USB_DEVICE(0x0572, 0xcb01), .driver_info = (unsigned long) &cxacru_cb00
},
{ /* V = Conexant P = ADSL modem (Well PTI-800) */
USB_DEVICE(0x0572, 0xcb02), .driver_info = (unsigned long) &cxacru_cb00
},
{ /* V = Conexant P = ADSL modem */
USB_DEVICE(0x0572, 0xcb06), .driver_info = (unsigned long) &cxacru_cb00
},

51
drivers/usb/atm/speedtch.c
View File

@ -205,7 +205,7 @@ static int speedtch_upload_firmware(struct speedtch_instance_data *instance,
buffer, 0x200, &actual_length, 2000);
if (ret < 0 && ret != -ETIMEDOUT)
usb_dbg(usbatm, "%s: read BLOCK0 from modem failed (%d)!\n", __func__, ret);
usb_warn(usbatm, "%s: read BLOCK0 from modem failed (%d)!\n", __func__, ret);
else
usb_dbg(usbatm, "%s: BLOCK0 downloaded (%d bytes)\n", __func__, ret);
}
@ -219,7 +219,7 @@ static int speedtch_upload_firmware(struct speedtch_instance_data *instance,
buffer, thislen, &actual_length, DATA_TIMEOUT);
if (ret < 0) {
usb_dbg(usbatm, "%s: write BLOCK1 to modem failed (%d)!\n", __func__, ret);
usb_err(usbatm, "%s: write BLOCK1 to modem failed (%d)!\n", __func__, ret);
goto out_free;
}
usb_dbg(usbatm, "%s: BLOCK1 uploaded (%zu bytes)\n", __func__, fw1->size);
@ -232,7 +232,7 @@ static int speedtch_upload_firmware(struct speedtch_instance_data *instance,
buffer, 0x200, &actual_length, DATA_TIMEOUT);
if (ret < 0) {
usb_dbg(usbatm, "%s: read BLOCK2 from modem failed (%d)!\n", __func__, ret);
usb_err(usbatm, "%s: read BLOCK2 from modem failed (%d)!\n", __func__, ret);
goto out_free;
}
usb_dbg(usbatm, "%s: BLOCK2 downloaded (%d bytes)\n", __func__, actual_length);
@ -246,7 +246,7 @@ static int speedtch_upload_firmware(struct speedtch_instance_data *instance,
buffer, thislen, &actual_length, DATA_TIMEOUT);
if (ret < 0) {
usb_dbg(usbatm, "%s: write BLOCK3 to modem failed (%d)!\n", __func__, ret);
usb_err(usbatm, "%s: write BLOCK3 to modem failed (%d)!\n", __func__, ret);
goto out_free;
}
}
@ -259,7 +259,7 @@ static int speedtch_upload_firmware(struct speedtch_instance_data *instance,
buffer, 0x200, &actual_length, DATA_TIMEOUT);
if (ret < 0) {
usb_dbg(usbatm, "%s: read BLOCK4 from modem failed (%d)!\n", __func__, ret);
usb_err(usbatm, "%s: read BLOCK4 from modem failed (%d)!\n", __func__, ret);
goto out_free;
}
@ -285,8 +285,8 @@ static int speedtch_upload_firmware(struct speedtch_instance_data *instance,
return ret;
}
static int speedtch_find_firmware(struct usb_interface *intf, int phase,
const struct firmware **fw_p)
static int speedtch_find_firmware(struct usbatm_data *usbatm, struct usb_interface *intf,
int phase, const struct firmware **fw_p)
{
struct device *dev = &intf->dev;
const u16 bcdDevice = le16_to_cpu(interface_to_usbdev(intf)->descriptor.bcdDevice);
@ -295,24 +295,24 @@ static int speedtch_find_firmware(struct usb_interface *intf, int phase,
char buf[24];
sprintf(buf, "speedtch-%d.bin.%x.%02x", phase, major_revision, minor_revision);
dev_dbg(dev, "%s: looking for %s\n", __func__, buf);
usb_dbg(usbatm, "%s: looking for %s\n", __func__, buf);
if (request_firmware(fw_p, buf, dev)) {
sprintf(buf, "speedtch-%d.bin.%x", phase, major_revision);
dev_dbg(dev, "%s: looking for %s\n", __func__, buf);
usb_dbg(usbatm, "%s: looking for %s\n", __func__, buf);
if (request_firmware(fw_p, buf, dev)) {
sprintf(buf, "speedtch-%d.bin", phase);
dev_dbg(dev, "%s: looking for %s\n", __func__, buf);
usb_dbg(usbatm, "%s: looking for %s\n", __func__, buf);
if (request_firmware(fw_p, buf, dev)) {
dev_warn(dev, "no stage %d firmware found!\n", phase);
usb_err(usbatm, "%s: no stage %d firmware found!\n", __func__, phase);
return -ENOENT;
}
}
}
dev_info(dev, "found stage %d firmware %s\n", phase, buf);
usb_info(usbatm, "found stage %d firmware %s\n", phase, buf);
return 0;
}
@ -323,15 +323,16 @@ static int speedtch_heavy_init(struct usbatm_data *usbatm, struct usb_interface
struct speedtch_instance_data *instance = usbatm->driver_data;
int ret;
if ((ret = speedtch_find_firmware(intf, 1, &fw1)) < 0)
if ((ret = speedtch_find_firmware(usbatm, intf, 1, &fw1)) < 0)
return ret;
if ((ret = speedtch_find_firmware(intf, 2, &fw2)) < 0) {
if ((ret = speedtch_find_firmware(usbatm, intf, 2, &fw2)) < 0) {
release_firmware(fw1);
return ret;
}
ret = speedtch_upload_firmware(instance, fw1, fw2);
if ((ret = speedtch_upload_firmware(instance, fw1, fw2)) < 0)
usb_err(usbatm, "%s: firmware upload failed (%d)!\n", __func__, ret);
release_firmware(fw2);
release_firmware(fw1);
@ -428,7 +429,9 @@ static void speedtch_check_status(struct speedtch_instance_data *instance)
int down_speed, up_speed, ret;
unsigned char status;
#ifdef VERBOSE_DEBUG
atm_dbg(usbatm, "%s entered\n", __func__);
#endif
ret = speedtch_read_status(instance);
if (ret < 0) {
@ -441,9 +444,9 @@ static void speedtch_check_status(struct speedtch_instance_data *instance)
status = buf[OFFSET_7];
atm_dbg(usbatm, "%s: line state %02x\n", __func__, status);
if ((status != instance->last_status) || !status) {
atm_dbg(usbatm, "%s: line state 0x%02x\n", __func__, status);
switch (status) {
case 0:
atm_dev->signal = ATM_PHY_SIG_LOST;
@ -484,7 +487,7 @@ static void speedtch_check_status(struct speedtch_instance_data *instance)
default:
atm_dev->signal = ATM_PHY_SIG_UNKNOWN;
atm_info(usbatm, "Unknown line state %02x\n", status);
atm_info(usbatm, "unknown line state %02x\n", status);
break;
}
@ -690,8 +693,10 @@ static int speedtch_bind(struct usbatm_data *usbatm,
usb_dbg(usbatm, "%s entered\n", __func__);
/* sanity checks */
if (usb_dev->descriptor.bDeviceClass != USB_CLASS_VENDOR_SPEC) {
usb_dbg(usbatm, "%s: wrong device class %d\n", __func__, usb_dev->descriptor.bDeviceClass);
usb_err(usbatm, "%s: wrong device class %d\n", __func__, usb_dev->descriptor.bDeviceClass);
return -ENODEV;
}
@ -704,7 +709,7 @@ static int speedtch_bind(struct usbatm_data *usbatm,
ret = usb_driver_claim_interface(&speedtch_usb_driver, cur_intf, usbatm);
if (ret < 0) {
usb_dbg(usbatm, "%s: failed to claim interface %d (%d)\n", __func__, i, ret);
usb_err(usbatm, "%s: failed to claim interface %2d (%d)!\n", __func__, i, ret);
speedtch_release_interfaces(usb_dev, i);
return ret;
}
@ -714,7 +719,7 @@ static int speedtch_bind(struct usbatm_data *usbatm,
instance = kmalloc(sizeof(*instance), GFP_KERNEL);
if (!instance) {
usb_dbg(usbatm, "%s: no memory for instance data!\n", __func__);
usb_err(usbatm, "%s: no memory for instance data!\n", __func__);
ret = -ENOMEM;
goto fail_release;
}
@ -754,8 +759,10 @@ static int speedtch_bind(struct usbatm_data *usbatm,
usb_dbg(usbatm, "%s: firmware %s loaded\n", __func__, need_heavy_init ? "not" : "already");
if (*need_heavy_init)
if ((ret = usb_reset_device(usb_dev)) < 0)
if ((ret = usb_reset_device(usb_dev)) < 0) {
usb_err(usbatm, "%s: device reset failed (%d)!\n", __func__, ret);
goto fail_free;
}
usbatm->driver_data = instance;

99
drivers/usb/atm/usbatm.c
View File

@ -166,10 +166,10 @@ struct usbatm_control {
/* ATM */
static void usbatm_atm_dev_close(struct atm_dev *dev);
static void usbatm_atm_dev_close(struct atm_dev *atm_dev);
static int usbatm_atm_open(struct atm_vcc *vcc);
static void usbatm_atm_close(struct atm_vcc *vcc);
static int usbatm_atm_ioctl(struct atm_dev *dev, unsigned int cmd, void __user * arg);
static int usbatm_atm_ioctl(struct atm_dev *atm_dev, unsigned int cmd, void __user * arg);
static int usbatm_atm_send(struct atm_vcc *vcc, struct sk_buff *skb);
static int usbatm_atm_proc_read(struct atm_dev *atm_dev, loff_t * pos, char *page);
@ -234,7 +234,8 @@ static int usbatm_submit_urb(struct urb *urb)
ret = usb_submit_urb(urb, GFP_ATOMIC);
if (ret) {
atm_dbg(channel->usbatm, "%s: urb 0x%p submission failed (%d)!\n",
if (printk_ratelimit())
atm_warn(channel->usbatm, "%s: urb 0x%p submission failed (%d)!\n",
__func__, urb, ret);
/* consider all errors transient and return the buffer back to the queue */
@ -269,10 +270,13 @@ static void usbatm_complete(struct urb *urb, struct pt_regs *regs)
spin_unlock_irqrestore(&channel->lock, flags);
if (unlikely(urb->status))
if (unlikely(urb->status)) {
if (printk_ratelimit())
atm_warn(channel->usbatm, "%s: urb 0x%p failed (%d)!\n",
__func__, urb, urb->status);
/* throttle processing in case of an error */
mod_timer(&channel->delay, jiffies + msecs_to_jiffies(THROTTLE_MSECS));
else
} else
tasklet_schedule(&channel->tasklet);
}
@ -284,11 +288,11 @@ static void usbatm_complete(struct urb *urb, struct pt_regs *regs)
static inline struct usbatm_vcc_data *usbatm_find_vcc(struct usbatm_data *instance,
short vpi, int vci)
{
struct usbatm_vcc_data *vcc;
struct usbatm_vcc_data *vcc_data;
list_for_each_entry(vcc, &instance->vcc_list, list)
if ((vcc->vci == vci) && (vcc->vpi == vpi))
return vcc;
list_for_each_entry(vcc_data, &instance->vcc_list, list)
if ((vcc_data->vci == vci) && (vcc_data->vpi == vpi))
return vcc_data;
return NULL;
}
@ -317,7 +321,7 @@ static void usbatm_extract_cells(struct usbatm_data *instance,
cached_vcc = usbatm_find_vcc(instance, vpi, vci);
if (!cached_vcc)
atm_dbg(instance, "%s: unknown vpi/vci (%hd/%d)!\n", __func__, vpi, vci);
atm_rldbg(instance, "%s: unknown vpi/vci (%hd/%d)!\n", __func__, vpi, vci);
}
if (!cached_vcc)
@ -327,7 +331,9 @@ static void usbatm_extract_cells(struct usbatm_data *instance,
/* OAM F5 end-to-end */
if (pti == ATM_PTI_E2EF5) {
atm_warn(instance, "%s: OAM not supported (vpi %d, vci %d)!\n", __func__, vpi, vci);
if (printk_ratelimit())
atm_warn(instance, "%s: OAM not supported (vpi %d, vci %d)!\n",
__func__, vpi, vci);
atomic_inc(&vcc->stats->rx_err);
continue;
}
@ -335,7 +341,7 @@ static void usbatm_extract_cells(struct usbatm_data *instance,
sarb = cached_vcc->sarb;
if (sarb->tail + ATM_CELL_PAYLOAD > sarb->end) {
atm_dbg(instance, "%s: buffer overrun (sarb->len %u, vcc: 0x%p)!\n",
atm_rldbg(instance, "%s: buffer overrun (sarb->len %u, vcc: 0x%p)!\n",
__func__, sarb->len, vcc);
/* discard cells already received */
skb_trim(sarb, 0);
@ -354,7 +360,7 @@ static void usbatm_extract_cells(struct usbatm_data *instance,
/* guard against overflow */
if (length > ATM_MAX_AAL5_PDU) {
atm_dbg(instance, "%s: bogus length %u (vcc: 0x%p)!\n",
atm_rldbg(instance, "%s: bogus length %u (vcc: 0x%p)!\n",
__func__, length, vcc);
atomic_inc(&vcc->stats->rx_err);
goto out;
@ -363,14 +369,14 @@ static void usbatm_extract_cells(struct usbatm_data *instance,
pdu_length = usbatm_pdu_length(length);
if (sarb->len < pdu_length) {
atm_dbg(instance, "%s: bogus pdu_length %u (sarb->len: %u, vcc: 0x%p)!\n",
atm_rldbg(instance, "%s: bogus pdu_length %u (sarb->len: %u, vcc: 0x%p)!\n",
__func__, pdu_length, sarb->len, vcc);
atomic_inc(&vcc->stats->rx_err);
goto out;
}
if (crc32_be(~0, sarb->tail - pdu_length, pdu_length) != 0xc704dd7b) {
atm_dbg(instance, "%s: packet failed crc check (vcc: 0x%p)!\n",
atm_rldbg(instance, "%s: packet failed crc check (vcc: 0x%p)!\n",
__func__, vcc);
atomic_inc(&vcc->stats->rx_err);
goto out;
@ -379,7 +385,9 @@ static void usbatm_extract_cells(struct usbatm_data *instance,
vdbg("%s: got packet (length: %u, pdu_length: %u, vcc: 0x%p)", __func__, length, pdu_length, vcc);
if (!(skb = dev_alloc_skb(length))) {
atm_dbg(instance, "%s: no memory for skb (length: %u)!\n", __func__, length);
if (printk_ratelimit())
atm_err(instance, "%s: no memory for skb (length: %u)!\n",
__func__, length);
atomic_inc(&vcc->stats->rx_drop);
goto out;
}
@ -387,7 +395,8 @@ static void usbatm_extract_cells(struct usbatm_data *instance,
vdbg("%s: allocated new sk_buff (skb: 0x%p, skb->truesize: %u)", __func__, skb, skb->truesize);
if (!atm_charge(vcc, skb->truesize)) {
atm_dbg(instance, "%s: failed atm_charge (skb->truesize: %u)!\n", __func__, skb->truesize);
atm_rldbg(instance, "%s: failed atm_charge (skb->truesize: %u)!\n",
__func__, skb->truesize);
dev_kfree_skb(skb);
goto out; /* atm_charge increments rx_drop */
}
@ -600,13 +609,13 @@ static int usbatm_atm_send(struct atm_vcc *vcc, struct sk_buff *skb)
}
if (vcc->qos.aal != ATM_AAL5) {
atm_dbg(instance, "%s: unsupported ATM type %d!\n", __func__, vcc->qos.aal);
atm_rldbg(instance, "%s: unsupported ATM type %d!\n", __func__, vcc->qos.aal);
err = -EINVAL;
goto fail;
}
if (skb->len > ATM_MAX_AAL5_PDU) {
atm_dbg(instance, "%s: packet too long (%d vs %d)!\n",
atm_rldbg(instance, "%s: packet too long (%d vs %d)!\n",
__func__, skb->len, ATM_MAX_AAL5_PDU);
err = -EINVAL;
goto fail;
@ -665,16 +674,16 @@ static void usbatm_put_instance(struct usbatm_data *instance)
** ATM **
**********/
static void usbatm_atm_dev_close(struct atm_dev *dev)
static void usbatm_atm_dev_close(struct atm_dev *atm_dev)
{
struct usbatm_data *instance = dev->dev_data;
struct usbatm_data *instance = atm_dev->dev_data;
dbg("%s", __func__);
if (!instance)
return;
dev->dev_data = NULL;
atm_dev->dev_data = NULL; /* catch bugs */
usbatm_put_instance(instance); /* taken in usbatm_atm_init */
}
@ -735,13 +744,18 @@ static int usbatm_atm_open(struct atm_vcc *vcc)
atm_dbg(instance, "%s: vpi %hd, vci %d\n", __func__, vpi, vci);
/* only support AAL5 */
if ((vcc->qos.aal != ATM_AAL5) || (vcc->qos.rxtp.max_sdu < 0)
|| (vcc->qos.rxtp.max_sdu > ATM_MAX_AAL5_PDU)) {
atm_dbg(instance, "%s: unsupported ATM type %d!\n", __func__, vcc->qos.aal);
if ((vcc->qos.aal != ATM_AAL5)) {
atm_warn(instance, "%s: unsupported ATM type %d!\n", __func__, vcc->qos.aal);
return -EINVAL;
}
down(&instance->serialize); /* vs self, usbatm_atm_close */
/* sanity checks */
if ((vcc->qos.rxtp.max_sdu < 0) || (vcc->qos.rxtp.max_sdu > ATM_MAX_AAL5_PDU)) {
atm_dbg(instance, "%s: max_sdu %d out of range!\n", __func__, vcc->qos.rxtp.max_sdu);
return -EINVAL;
}
down(&instance->serialize); /* vs self, usbatm_atm_close, usbatm_usb_disconnect */
if (usbatm_find_vcc(instance, vpi, vci)) {
atm_dbg(instance, "%s: %hd/%d already in use!\n", __func__, vpi, vci);
@ -750,7 +764,7 @@ static int usbatm_atm_open(struct atm_vcc *vcc)
}
if (!(new = kmalloc(sizeof(struct usbatm_vcc_data), GFP_KERNEL))) {
atm_dbg(instance, "%s: no memory for vcc_data!\n", __func__);
atm_err(instance, "%s: no memory for vcc_data!\n", __func__);
ret = -ENOMEM;
goto fail;
}
@ -762,7 +776,7 @@ static int usbatm_atm_open(struct atm_vcc *vcc)
new->sarb = alloc_skb(usbatm_pdu_length(vcc->qos.rxtp.max_sdu), GFP_KERNEL);
if (!new->sarb) {
atm_dbg(instance, "%s: no memory for SAR buffer!\n", __func__);
atm_err(instance, "%s: no memory for SAR buffer!\n", __func__);
ret = -ENOMEM;
goto fail;
}
@ -806,7 +820,7 @@ static void usbatm_atm_close(struct atm_vcc *vcc)
usbatm_cancel_send(instance, vcc);
down(&instance->serialize); /* vs self, usbatm_atm_open */
down(&instance->serialize); /* vs self, usbatm_atm_open, usbatm_usb_disconnect */
tasklet_disable(&instance->rx_channel.tasklet);
list_del(&vcc_data->list);
@ -829,7 +843,7 @@ static void usbatm_atm_close(struct atm_vcc *vcc)
atm_dbg(instance, "%s successful\n", __func__);
}
static int usbatm_atm_ioctl(struct atm_dev *dev, unsigned int cmd,
static int usbatm_atm_ioctl(struct atm_dev *atm_dev, unsigned int cmd,
void __user * arg)
{
switch (cmd) {
@ -845,10 +859,13 @@ static int usbatm_atm_init(struct usbatm_data *instance)
struct atm_dev *atm_dev;
int ret, i;
/* ATM init */
/* ATM init. The ATM initialization scheme suffers from an intrinsic race
* condition: callbacks we register can be executed at once, before we have
* initialized the struct atm_dev. To protect against this, all callbacks
* abort if atm_dev->dev_data is NULL. */
atm_dev = atm_dev_register(instance->driver_name, &usbatm_atm_devops, -1, NULL);
if (!atm_dev) {
usb_dbg(instance, "%s: failed to register ATM device!\n", __func__);
usb_err(instance, "%s: failed to register ATM device!\n", __func__);
return -1;
}
@ -862,12 +879,13 @@ static int usbatm_atm_init(struct usbatm_data *instance)
atm_dev->link_rate = 128 * 1000 / 424;
if (instance->driver->atm_start && ((ret = instance->driver->atm_start(instance, atm_dev)) < 0)) {
atm_dbg(instance, "%s: atm_start failed: %d!\n", __func__, ret);
atm_err(instance, "%s: atm_start failed: %d!\n", __func__, ret);
goto fail;
}
/* ready for ATM callbacks */
usbatm_get_instance(instance); /* dropped in usbatm_atm_dev_close */
/* ready for ATM callbacks */
mb();
atm_dev->dev_data = instance;
@ -915,7 +933,7 @@ static int usbatm_heavy_init(struct usbatm_data *instance)
int ret = kernel_thread(usbatm_do_heavy_init, instance, CLONE_KERNEL);
if (ret < 0) {
usb_dbg(instance, "%s: failed to create kernel_thread (%d)!\n", __func__, ret);
usb_err(instance, "%s: failed to create kernel_thread (%d)!\n", __func__, ret);
return ret;
}
@ -953,7 +971,7 @@ int usbatm_usb_probe(struct usb_interface *intf, const struct usb_device_id *id,
int i, length;
int need_heavy;
dev_dbg(dev, "%s: trying driver %s with vendor=0x%x, product=0x%x, ifnum %d\n",
dev_dbg(dev, "%s: trying driver %s with vendor=%04x, product=%04x, ifnum %2d\n",
__func__, driver->driver_name,
le16_to_cpu(usb_dev->descriptor.idVendor),
le16_to_cpu(usb_dev->descriptor.idProduct),
@ -962,7 +980,7 @@ int usbatm_usb_probe(struct usb_interface *intf, const struct usb_device_id *id,
/* instance init */
instance = kzalloc(sizeof(*instance) + sizeof(struct urb *) * (num_rcv_urbs + num_snd_urbs), GFP_KERNEL);
if (!instance) {
dev_dbg(dev, "%s: no memory for instance data!\n", __func__);
dev_err(dev, "%s: no memory for instance data!\n", __func__);
return -ENOMEM;
}
@ -998,7 +1016,7 @@ int usbatm_usb_probe(struct usb_interface *intf, const struct usb_device_id *id,
bind:
need_heavy = 1;
if (driver->bind && (error = driver->bind(instance, intf, id, &need_heavy)) < 0) {
dev_dbg(dev, "%s: bind failed: %d!\n", __func__, error);
dev_err(dev, "%s: bind failed: %d!\n", __func__, error);
goto fail_free;
}
@ -1044,7 +1062,7 @@ int usbatm_usb_probe(struct usb_interface *intf, const struct usb_device_id *id,
urb = usb_alloc_urb(iso_packets, GFP_KERNEL);
if (!urb) {
dev_dbg(dev, "%s: no memory for urb %d!\n", __func__, i);
dev_err(dev, "%s: no memory for urb %d!\n", __func__, i);
goto fail_unbind;
}
@ -1052,9 +1070,10 @@ int usbatm_usb_probe(struct usb_interface *intf, const struct usb_device_id *id,
buffer = kmalloc(channel->buf_size, GFP_KERNEL);
if (!buffer) {
dev_dbg(dev, "%s: no memory for buffer %d!\n", __func__, i);
dev_err(dev, "%s: no memory for buffer %d!\n", __func__, i);
goto fail_unbind;
}
/* zero the tx padding to avoid leaking information */
memset(buffer, 0, channel->buf_size);
usb_fill_bulk_urb(urb, instance->usb_dev, channel->endpoint,

23
drivers/usb/atm/usbatm.h
View File

@ -24,22 +24,21 @@
#ifndef _USBATM_H_
#define _USBATM_H_
#include <linux/config.h>
/*
#define VERBOSE_DEBUG
*/
#include <asm/semaphore.h>
#include <linux/atm.h>
#include <linux/atmdev.h>
#include <linux/completion.h>
#include <linux/device.h>
#include <linux/kernel.h>
#include <linux/kref.h>
#include <linux/list.h>
#include <linux/stringify.h>
#include <linux/usb.h>
/*
#define VERBOSE_DEBUG
*/
#ifdef DEBUG
#define UDSL_ASSERT(x) BUG_ON(!(x))
#else
@ -52,8 +51,13 @@
dev_info(&(instance)->usb_intf->dev , format , ## arg)
#define usb_warn(instance, format, arg...) \
dev_warn(&(instance)->usb_intf->dev , format , ## arg)
#ifdef DEBUG
#define usb_dbg(instance, format, arg...) \
dev_dbg(&(instance)->usb_intf->dev , format , ## arg)
dev_printk(KERN_DEBUG , &(instance)->usb_intf->dev , format , ## arg)
#else
#define usb_dbg(instance, format, arg...) \
do {} while (0)
#endif
/* FIXME: move to dev_* once ATM is driver model aware */
#define atm_printk(level, instance, format, arg...) \
@ -69,9 +73,14 @@
#ifdef DEBUG
#define atm_dbg(instance, format, arg...) \
atm_printk(KERN_DEBUG, instance , format , ## arg)
#define atm_rldbg(instance, format, arg...) \
if (printk_ratelimit()) \
atm_printk(KERN_DEBUG, instance , format , ## arg)
#else
#define atm_dbg(instance, format, arg...) \
do {} while (0)
#define atm_rldbg(instance, format, arg...) \
do {} while (0)
#endif

23
drivers/usb/atm/xusbatm.c
View File

@ -61,7 +61,7 @@ static int usb_intf_has_ep(const struct usb_interface *intf, u8 ep)
return 0;
}
static int xusbatm_bind(struct usbatm_data *usbatm_instance,
static int xusbatm_bind(struct usbatm_data *usbatm,
struct usb_interface *intf, const struct usb_device_id *id,
int *need_heavy_init)
{
@ -72,14 +72,14 @@ static int xusbatm_bind(struct usbatm_data *usbatm_instance,
u8 searched_ep = rx_ep_present ? tx_endpoint[drv_ix] : rx_endpoint[drv_ix];
int i, ret;
usb_dbg(usbatm_instance, "%s: binding driver %d: vendor %#x product %#x"
" rx: ep %#x padd %d tx: ep %#x padd %d\n",
usb_dbg(usbatm, "%s: binding driver %d: vendor %04x product %04x"
" rx: ep %02x padd %d tx: ep %02x padd %d\n",
__func__, drv_ix, vendor[drv_ix], product[drv_ix],
rx_endpoint[drv_ix], rx_padding[drv_ix],
tx_endpoint[drv_ix], tx_padding[drv_ix]);
if (!rx_ep_present && !tx_ep_present) {
usb_dbg(usbatm_instance, "%s: intf #%d has neither rx (%#x) nor tx (%#x) endpoint\n",
usb_dbg(usbatm, "%s: intf #%d has neither rx (%#x) nor tx (%#x) endpoint\n",
__func__, intf->altsetting->desc.bInterfaceNumber,
rx_endpoint[drv_ix], tx_endpoint[drv_ix]);
return -ENODEV;
@ -93,25 +93,26 @@ static int xusbatm_bind(struct usbatm_data *usbatm_instance,
if (cur_if != intf && usb_intf_has_ep(cur_if, searched_ep)) {
ret = usb_driver_claim_interface(&xusbatm_usb_driver,
cur_if, usbatm_instance);
cur_if, usbatm);
if (!ret)
usb_err(usbatm_instance, "%s: failed to claim interface #%d (%d)\n",
usb_err(usbatm, "%s: failed to claim interface #%d (%d)\n",
__func__, cur_if->altsetting->desc.bInterfaceNumber, ret);
return ret;
}
}
usb_err(usbatm_instance, "%s: no interface has endpoint %#x\n",
usb_err(usbatm, "%s: no interface has endpoint %#x\n",
__func__, searched_ep);
return -ENODEV;
}
static void xusbatm_unbind(struct usbatm_data *usbatm_instance,
static void xusbatm_unbind(struct usbatm_data *usbatm,
struct usb_interface *intf)
{
struct usb_device *usb_dev = interface_to_usbdev(intf);
int i;
usb_dbg(usbatm_instance, "%s entered\n", __func__);
usb_dbg(usbatm, "%s entered\n", __func__);
for(i = 0; i < usb_dev->actconfig->desc.bNumInterfaces; i++) {
struct usb_interface *cur_if = usb_dev->actconfig->interface[i];
@ -120,10 +121,10 @@ static void xusbatm_unbind(struct usbatm_data *usbatm_instance,
}
}
static int xusbatm_atm_start(struct usbatm_data *usbatm_instance,
static int xusbatm_atm_start(struct usbatm_data *usbatm,
struct atm_dev *atm_dev)
{
atm_dbg(usbatm_instance, "%s entered\n", __func__);
atm_dbg(usbatm, "%s entered\n", __func__);
/* use random MAC as we've no way to get it from the device */
random_ether_addr(atm_dev->esi);