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linux
linux-davinci
Commits
8c159d59
Commit
8c159d59
authored
Aug 27, 2007
by
Mauro Carvalho Chehab
Committed by
Mauro Carvalho Chehab
Sep 15, 2009
Browse files
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Plain Diff
V4L/DVB (12790): tm6000: check for errors on usb->status
Signed-off-by:
Mauro Carvalho Chehab
<
mchehab@redhat.com
>
parent
2df7f152
Changes
1
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Showing
1 changed file
with
51 additions
and
34 deletions
+51
-34
drivers/staging/tm6000/tm6000-video.c
drivers/staging/tm6000/tm6000-video.c
+51
-34
No files found.
drivers/staging/tm6000/tm6000-video.c
View file @
8c159d59
...
...
@@ -163,7 +163,7 @@ static void inline buffer_filled (struct tm6000_core *dev,
struct
tm6000_buffer
*
buf
)
{
/* Advice that buffer was filled */
dprintk
(
dev
,
V4L2_DEBUG_
QUEUE
,
"[%p/%d] wakeup
\n
"
,
buf
,
buf
->
vb
.
i
);
dprintk
(
dev
,
V4L2_DEBUG_
ISOC
,
"[%p/%d] wakeup
\n
"
,
buf
,
buf
->
vb
.
i
);
buf
->
vb
.
state
=
STATE_DONE
;
buf
->
vb
.
field_count
++
;
do_gettimeofday
(
&
buf
->
vb
.
ts
);
...
...
@@ -314,7 +314,7 @@ static int copy_multiplexed(u8 *ptr, u8 *out_p, unsigned long len,
pos
=
0
;
/* Announces that a new buffer were filled */
buffer_filled
(
dev
,
*
buf
);
dprintk
(
dev
,
V4L2_DEBUG_
QUEUE
,
"new buffer filled
\n
"
);
dprintk
(
dev
,
V4L2_DEBUG_
ISOC
,
"new buffer filled
\n
"
);
rc
=
get_next_buf
(
dma_q
,
buf
);
if
(
rc
<=
0
)
{
...
...
@@ -329,6 +329,47 @@ static int copy_multiplexed(u8 *ptr, u8 *out_p, unsigned long len,
return
rc
;
}
static
void
inline
print_err_status
(
struct
tm6000_core
*
dev
,
int
packet
,
int
status
)
{
char
*
errmsg
=
"Unknown"
;
switch
(
status
)
{
case
-
ENOENT
:
errmsg
=
"unlinked synchronuously"
;
break
;
case
-
ECONNRESET
:
errmsg
=
"unlinked asynchronuously"
;
break
;
case
-
ENOSR
:
errmsg
=
"Buffer error (overrun)"
;
break
;
case
-
EPIPE
:
errmsg
=
"Stalled (device not responding)"
;
break
;
case
-
EOVERFLOW
:
errmsg
=
"Babble (bad cable?)"
;
break
;
case
-
EPROTO
:
errmsg
=
"Bit-stuff error (bad cable?)"
;
break
;
case
-
EILSEQ
:
errmsg
=
"CRC/Timeout (could be anything)"
;
break
;
case
-
ETIME
:
errmsg
=
"Device does not respond"
;
break
;
}
if
(
packet
<
0
)
{
dprintk
(
dev
,
V4L2_DEBUG_QUEUE
,
"URB status %d [%s].
\n
"
,
status
,
errmsg
);
}
else
{
dprintk
(
dev
,
V4L2_DEBUG_QUEUE
,
"URB packet %d, status %d [%s].
\n
"
,
packet
,
status
,
errmsg
);
}
}
/*
* Controls the isoc copy of each urb packet
*/
...
...
@@ -344,42 +385,18 @@ static inline int tm6000_isoc_copy(struct urb *urb, struct tm6000_buffer **buf)
copied
=
0
;
if
(
urb
->
status
<
0
)
{
print_err_status
(
dev
,
-
1
,
urb
->
status
);
return
0
;
}
for
(
i
=
0
;
i
<
urb
->
number_of_packets
;
i
++
)
{
int
status
=
urb
->
iso_frame_desc
[
i
].
status
;
char
*
errmsg
=
"Unknown"
;
switch
(
status
)
{
case
-
ENOENT
:
errmsg
=
"unlinked synchronuously"
;
break
;
case
-
ECONNRESET
:
errmsg
=
"unlinked asynchronuously"
;
break
;
case
-
ENOSR
:
errmsg
=
"Buffer error (overrun)"
;
break
;
case
-
EPIPE
:
errmsg
=
"Stalled (device not responding)"
;
break
;
case
-
EOVERFLOW
:
errmsg
=
"Babble (bad cable?)"
;
break
;
case
-
EPROTO
:
errmsg
=
"Bit-stuff error (bad cable?)"
;
break
;
case
-
EILSEQ
:
errmsg
=
"CRC/Timeout (could be anything)"
;
break
;
case
-
ETIME
:
errmsg
=
"Device does not respond"
;
break
;
}
dprintk
(
dev
,
V4L2_DEBUG_QUEUE
,
"URB status %d [%s].
\n
"
,
status
,
errmsg
);
if
(
status
<
0
)
if
(
status
<
0
)
{
print_err_status
(
dev
,
i
,
status
);
continue
;
}
len
=
urb
->
iso_frame_desc
[
i
].
actual_length
;
...
...
@@ -402,7 +419,7 @@ static inline int tm6000_isoc_copy(struct urb *urb, struct tm6000_buffer **buf)
if
(((
*
buf
)
->
fmt
->
fourcc
)
!=
V4L2_PIX_FMT_TM6000
)
{
buffer_filled
(
dev
,
*
buf
);
dprintk
(
dev
,
V4L2_DEBUG_
QUEUE
,
"new buffer filled
\n
"
);
dprintk
(
dev
,
V4L2_DEBUG_
ISOC
,
"new buffer filled
\n
"
);
}
return
rc
;
...
...
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