The patch titled
gigaset: clean up urb->status usage
has been added to the -mm tree. Its filename is
gigaset-clean-up-urb-status-usage.patch
*** Remember to use Documentation/SubmitChecklist when testing your code ***
See http://www.zip.com.au/~akpm/linux/patches/stuff/added-to-mm.txt to find
out what to do about this
------------------------------------------------------
Subject: gigaset: clean up urb->status usage
From: Tilman Schmidt <tilman@xxxxxxx>
Make there only be one reference to urb->status per URB callback, and none
outside, in preparation for removal of that field.
Signed-off-by: Tilman Schmidt <tilman@xxxxxxx>
Cc: Greg KH <gregkh@xxxxxxx>
Cc: Hansjoerg Lipp <hjlipp@xxxxxx>
Cc: Karsten Keil <kkeil@xxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
drivers/isdn/gigaset/bas-gigaset.c | 84 +++++++++++++++------------
drivers/isdn/gigaset/gigaset.h | 3
drivers/isdn/gigaset/usb-gigaset.c | 12 ++-
3 files changed, 58 insertions(+), 41 deletions(-)
diff -puN drivers/isdn/gigaset/bas-gigaset.c~gigaset-clean-up-urb-status-usage drivers/isdn/gigaset/bas-gigaset.c
--- a/drivers/isdn/gigaset/bas-gigaset.c~gigaset-clean-up-urb-status-usage
+++ a/drivers/isdn/gigaset/bas-gigaset.c
@@ -248,12 +248,12 @@ static inline void dump_urb(enum debugle
if (urb) {
gig_dbg(level,
" dev=0x%08lx, pipe=%s:EP%d/DV%d:%s, "
- "status=%d, hcpriv=0x%08lx, transfer_flags=0x%x,",
+ "hcpriv=0x%08lx, transfer_flags=0x%x,",
(unsigned long) urb->dev,
usb_pipetype_str(urb->pipe),
usb_pipeendpoint(urb->pipe), usb_pipedevice(urb->pipe),
usb_pipein(urb->pipe) ? "in" : "out",
- urb->status, (unsigned long) urb->hcpriv,
+ (unsigned long) urb->hcpriv,
urb->transfer_flags);
gig_dbg(level,
" transfer_buffer=0x%08lx[%d], actual_length=%d, "
@@ -459,6 +459,7 @@ static void read_ctrl_callback(struct ur
struct inbuf_t *inbuf = urb->context;
struct cardstate *cs = inbuf->cs;
struct bas_cardstate *ucs = cs->hw.bas;
+ int status = urb->status;
int have_data = 0;
unsigned numbytes;
int rc;
@@ -472,7 +473,7 @@ static void read_ctrl_callback(struct ur
del_timer(&ucs->timer_cmd_in);
- switch (urb->status) {
+ switch (status) {
case 0: /* normal completion */
numbytes = urb->actual_length;
if (unlikely(numbytes != ucs->rcvbuf_size)) {
@@ -506,12 +507,12 @@ static void read_ctrl_callback(struct ur
case -ESHUTDOWN: /* device shut down */
/* no action necessary */
gig_dbg(DEBUG_USBREQ, "%s: %s",
- __func__, get_usb_statmsg(urb->status));
+ __func__, get_usb_statmsg(status));
break;
default: /* severe trouble */
dev_warn(cs->dev, "control read: %s\n",
- get_usb_statmsg(urb->status));
+ get_usb_statmsg(status));
if (ucs->retry_cmd_in++ < BAS_RETRY) {
dev_notice(cs->dev, "control read: retry %d\n",
ucs->retry_cmd_in);
@@ -601,12 +602,13 @@ static void read_int_callback(struct urb
struct cardstate *cs = urb->context;
struct bas_cardstate *ucs = cs->hw.bas;
struct bc_state *bcs;
+ int status = urb->status;
unsigned long flags;
int rc;
unsigned l;
int channel;
- switch (urb->status) {
+ switch (status) {
case 0: /* success */
break;
case -ENOENT: /* cancelled */
@@ -614,7 +616,7 @@ static void read_int_callback(struct urb
case -EINPROGRESS: /* pending */
/* ignore silently */
gig_dbg(DEBUG_USBREQ, "%s: %s",
- __func__, get_usb_statmsg(urb->status));
+ __func__, get_usb_statmsg(status));
return;
case -ENODEV: /* device removed */
case -ESHUTDOWN: /* device shut down */
@@ -623,7 +625,7 @@ static void read_int_callback(struct urb
return;
default: /* severe trouble */
dev_warn(cs->dev, "interrupt read: %s\n",
- get_usb_statmsg(urb->status));
+ get_usb_statmsg(status));
//FIXME corrective action? resubmission always ok?
goto resubmit;
}
@@ -766,17 +768,18 @@ static void read_iso_callback(struct urb
{
struct bc_state *bcs;
struct bas_bc_state *ubc;
+ int status = urb->status;
unsigned long flags;
int i, rc;
/* status codes not worth bothering the tasklet with */
- if (unlikely(urb->status == -ENOENT ||
- urb->status == -ECONNRESET ||
- urb->status == -EINPROGRESS ||
- urb->status == -ENODEV ||
- urb->status == -ESHUTDOWN)) {
+ if (unlikely(status == -ENOENT ||
+ status == -ECONNRESET ||
+ status == -EINPROGRESS ||
+ status == -ENODEV ||
+ status == -ESHUTDOWN)) {
gig_dbg(DEBUG_ISO, "%s: %s",
- __func__, get_usb_statmsg(urb->status));
+ __func__, get_usb_statmsg(status));
return;
}
@@ -787,10 +790,11 @@ static void read_iso_callback(struct urb
if (likely(ubc->isoindone == NULL)) {
/* pass URB to tasklet */
ubc->isoindone = urb;
+ ubc->isoinstatus = status;
tasklet_schedule(&ubc->rcvd_tasklet);
} else {
/* tasklet still busy, drop data and resubmit URB */
- ubc->loststatus = urb->status;
+ ubc->loststatus = status;
for (i = 0; i < BAS_NUMFRAMES; i++) {
ubc->isoinlost += urb->iso_frame_desc[i].actual_length;
if (unlikely(urb->iso_frame_desc[i].status != 0 &&
@@ -831,22 +835,24 @@ static void write_iso_callback(struct ur
{
struct isow_urbctx_t *ucx;
struct bas_bc_state *ubc;
+ int status = urb->status;
unsigned long flags;
/* status codes not worth bothering the tasklet with */
- if (unlikely(urb->status == -ENOENT ||
- urb->status == -ECONNRESET ||
- urb->status == -EINPROGRESS ||
- urb->status == -ENODEV ||
- urb->status == -ESHUTDOWN)) {
+ if (unlikely(status == -ENOENT ||
+ status == -ECONNRESET ||
+ status == -EINPROGRESS ||
+ status == -ENODEV ||
+ status == -ESHUTDOWN)) {
gig_dbg(DEBUG_ISO, "%s: %s",
- __func__, get_usb_statmsg(urb->status));
+ __func__, get_usb_statmsg(status));
return;
}
/* pass URB context to tasklet */
ucx = urb->context;
ubc = ucx->bcs->hw.bas;
+ ucx->status = status;
spin_lock_irqsave(&ubc->isooutlock, flags);
ubc->isooutovfl = ubc->isooutdone;
@@ -1070,6 +1076,7 @@ static void write_iso_tasklet(unsigned l
struct cardstate *cs = bcs->cs;
struct isow_urbctx_t *done, *next, *ovfl;
struct urb *urb;
+ int status;
struct usb_iso_packet_descriptor *ifd;
int offset;
unsigned long flags;
@@ -1126,7 +1133,8 @@ static void write_iso_tasklet(unsigned l
/* process completed URB */
urb = done->urb;
- switch (urb->status) {
+ status = done->status;
+ switch (status) {
case -EXDEV: /* partial completion */
gig_dbg(DEBUG_ISO, "%s: URB partially completed",
__func__);
@@ -1179,7 +1187,7 @@ static void write_iso_tasklet(unsigned l
break;
default: /* severe trouble */
dev_warn(cs->dev, "isochronous write: %s\n",
- get_usb_statmsg(urb->status));
+ get_usb_statmsg(status));
}
/* mark the write buffer area covered by this URB as free */
@@ -1233,6 +1241,7 @@ static void read_iso_tasklet(unsigned lo
struct bas_bc_state *ubc = bcs->hw.bas;
struct cardstate *cs = bcs->cs;
struct urb *urb;
+ int status;
char *rcvbuf;
unsigned long flags;
int totleft, numbytes, offset, frame, rc;
@@ -1245,6 +1254,7 @@ static void read_iso_tasklet(unsigned lo
spin_unlock_irqrestore(&ubc->isoinlock, flags);
return;
}
+ status = ubc->isoinstatus;
ubc->isoindone = NULL;
if (unlikely(ubc->loststatus != -EINPROGRESS)) {
dev_warn(cs->dev,
@@ -1260,11 +1270,11 @@ static void read_iso_tasklet(unsigned lo
gig_dbg(DEBUG_ISO,
"%s: channel not running, "
"dropped URB with status: %s",
- __func__, get_usb_statmsg(urb->status));
+ __func__, get_usb_statmsg(status));
return;
}
- switch (urb->status) {
+ switch (status) {
case 0: /* normal completion */
break;
case -EXDEV: /* inspect individual frames
@@ -1276,7 +1286,7 @@ static void read_iso_tasklet(unsigned lo
case -ECONNRESET:
case -EINPROGRESS:
gig_dbg(DEBUG_ISO, "%s: %s",
- __func__, get_usb_statmsg(urb->status));
+ __func__, get_usb_statmsg(status));
continue; /* -> skip */
case -EPIPE:
dev_err(cs->dev, "isochronous read stalled\n");
@@ -1284,7 +1294,7 @@ static void read_iso_tasklet(unsigned lo
continue; /* -> skip */
default: /* severe trouble */
dev_warn(cs->dev, "isochronous read: %s\n",
- get_usb_statmsg(urb->status));
+ get_usb_statmsg(status));
goto error;
}
@@ -1418,11 +1428,12 @@ static void req_timeout(unsigned long da
static void write_ctrl_callback(struct urb *urb)
{
struct bas_cardstate *ucs = urb->context;
+ int status = urb->status;
int rc;
unsigned long flags;
/* check status */
- switch (urb->status) {
+ switch (status) {
case 0: /* normal completion */
spin_lock_irqsave(&ucs->lock, flags);
switch (ucs->pending) {
@@ -1441,7 +1452,7 @@ static void write_ctrl_callback(struct u
case -ESHUTDOWN: /* device shut down */
/* ignore silently */
gig_dbg(DEBUG_USBREQ, "%s: %s",
- __func__, get_usb_statmsg(urb->status));
+ __func__, get_usb_statmsg(status));
break;
default: /* any failure */
@@ -1449,12 +1460,12 @@ static void write_ctrl_callback(struct u
dev_err(&ucs->interface->dev,
"control request 0x%02x failed: %s\n",
ucs->dr_ctrl.bRequest,
- get_usb_statmsg(urb->status));
+ get_usb_statmsg(status));
break; /* give up */
}
dev_notice(&ucs->interface->dev,
"control request 0x%02x: %s, retry %d\n",
- ucs->dr_ctrl.bRequest, get_usb_statmsg(urb->status),
+ ucs->dr_ctrl.bRequest, get_usb_statmsg(status),
ucs->retry_ctrl);
/* urb->dev is clobbered by USB subsystem */
urb->dev = ucs->udev;
@@ -1665,12 +1676,13 @@ static void write_command_callback(struc
{
struct cardstate *cs = urb->context;
struct bas_cardstate *ucs = cs->hw.bas;
+ int status = urb->status;
unsigned long flags;
update_basstate(ucs, 0, BS_ATWRPEND);
/* check status */
- switch (urb->status) {
+ switch (status) {
case 0: /* normal completion */
break;
case -ENOENT: /* cancelled */
@@ -1680,14 +1692,14 @@ static void write_command_callback(struc
case -ESHUTDOWN: /* device shut down */
/* ignore silently */
gig_dbg(DEBUG_USBREQ, "%s: %s",
- __func__, get_usb_statmsg(urb->status));
+ __func__, get_usb_statmsg(status));
return;
default: /* any failure */
if (++ucs->retry_cmd_out > BAS_RETRY) {
dev_warn(cs->dev,
"command write: %s, "
"giving up after %d retries\n",
- get_usb_statmsg(urb->status),
+ get_usb_statmsg(status),
ucs->retry_cmd_out);
break;
}
@@ -1695,11 +1707,11 @@ static void write_command_callback(struc
dev_warn(cs->dev,
"command write: %s, "
"cannot retry - cmdbuf gone\n",
- get_usb_statmsg(urb->status));
+ get_usb_statmsg(status));
break;
}
dev_notice(cs->dev, "command write: %s, retry %d\n",
- get_usb_statmsg(urb->status), ucs->retry_cmd_out);
+ get_usb_statmsg(status), ucs->retry_cmd_out);
if (atwrite_submit(cs, cs->cmdbuf->buf, cs->cmdbuf->len) >= 0)
/* resubmitted - bypass regular exit block */
return;
diff -puN drivers/isdn/gigaset/gigaset.h~gigaset-clean-up-urb-status-usage drivers/isdn/gigaset/gigaset.h
--- a/drivers/isdn/gigaset/gigaset.h~gigaset-clean-up-urb-status-usage
+++ a/drivers/isdn/gigaset/gigaset.h
@@ -356,11 +356,13 @@ struct isowbuf_t {
* - urb: pointer to the URB itself
* - bcs: pointer to the B Channel control structure
* - limit: end of write buffer area covered by this URB
+ * - status: URB completion status
*/
struct isow_urbctx_t {
struct urb *urb;
struct bc_state *bcs;
int limit;
+ int status;
};
/* AT state structure
@@ -580,6 +582,7 @@ struct bas_bc_state {
struct urb *isoinurbs[BAS_INURBS];
unsigned char isoinbuf[BAS_INBUFSIZE * BAS_INURBS];
struct urb *isoindone; /* completed isoc read URB */
+ int isoinstatus; /* status of completed URB */
int loststatus; /* status of dropped URB */
unsigned isoinlost; /* number of bytes lost */
/* state of bit unstuffing algorithm
diff -puN drivers/isdn/gigaset/usb-gigaset.c~gigaset-clean-up-urb-status-usage drivers/isdn/gigaset/usb-gigaset.c
--- a/drivers/isdn/gigaset/usb-gigaset.c~gigaset-clean-up-urb-status-usage
+++ a/drivers/isdn/gigaset/usb-gigaset.c
@@ -361,13 +361,14 @@ static void gigaset_read_int_callback(st
{
struct inbuf_t *inbuf = urb->context;
struct cardstate *cs = inbuf->cs;
+ int status = urb->status;
int resubmit = 0;
int r;
unsigned numbytes;
unsigned char *src;
unsigned long flags;
- if (!urb->status) {
+ if (!status) {
if (!cs->connected) {
err("%s: disconnected", __func__); /* should never happen */
return;
@@ -393,8 +394,8 @@ static void gigaset_read_int_callback(st
} else {
/* The urb might have been killed. */
gig_dbg(DEBUG_ANY, "%s - nonzero read bulk status received: %d",
- __func__, urb->status);
- if (urb->status != -ENOENT) { /* not killed */
+ __func__, status);
+ if (status != -ENOENT) { /* not killed */
if (!cs->connected) {
err("%s: disconnected", __func__); /* should never happen */
return;
@@ -418,11 +419,12 @@ static void gigaset_read_int_callback(st
static void gigaset_write_bulk_callback(struct urb *urb)
{
struct cardstate *cs = urb->context;
+ int status = urb->status;
unsigned long flags;
- if (urb->status)
+ if (status)
dev_err(cs->dev, "bulk transfer failed (status %d)\n",
- -urb->status);
+ -status);
/* That's all we can do. Communication problems
are handled by timeouts or network protocols. */
_
Patches currently in -mm which might be from tilman@xxxxxxx are
usb-power-managementtxt-disconnect-clarification.patch
gigaset-clean-up-urb-status-usage.patch
gigaset-code-cleanups.patch
bas_gigaset-suspend-support-v2.patch
usb_gigaset-suspend-support-v3.patch
-
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