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Kirill Smelkov
linux
Commits
5c1f5beb
Commit
5c1f5beb
authored
Jun 11, 2002
by
Linus Torvalds
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parents
8f73c6a8
b06ae2a2
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1 changed file
with
31 additions
and
7 deletions
+31
-7
drivers/scsi/53c700.c
drivers/scsi/53c700.c
+31
-7
No files found.
drivers/scsi/53c700.c
View file @
5c1f5beb
...
...
@@ -50,6 +50,14 @@
* */
/* CHANGELOG
*
* Version 2.8
*
* Fixed bad bug affecting tag starvation processing (previously the
* driver would hang the system if too many tags starved. Also fixed
* bad bug having to do with 10 byte command processing and REQUEST
* SENSE (the command would loop forever getting a transfer length
* mismatch in the CMD phase).
*
* Version 2.7
*
...
...
@@ -104,7 +112,7 @@
* Initial modularisation from the D700. See NCR_D700.c for the rest of
* the changelog.
* */
#define NCR_700_VERSION "2.
7
"
#define NCR_700_VERSION "2.
8
"
#include <linux/config.h>
#include <linux/version.h>
...
...
@@ -674,21 +682,34 @@ NCR_700_scsi_done(struct NCR_700_Host_Parameters *hostdata,
print_sense
(
"53c700"
,
SCp
);
#endif
SCp
->
use_sg
=
SCp
->
cmnd
[
8
];
/* restore the old result if the request sense was
* successful */
if
(
result
==
0
)
result
=
SCp
->
cmnd
[
7
];
/* now restore the original command */
memcpy
((
void
*
)
SCp
->
cmnd
,
(
void
*
)
SCp
->
data_cmnd
,
sizeof
(
SCp
->
data_cmnd
));
SCp
->
request_buffer
=
SCp
->
buffer
;
SCp
->
request_bufflen
=
SCp
->
bufflen
;
SCp
->
use_sg
=
SCp
->
old_use_sg
;
SCp
->
cmd_len
=
SCp
->
old_cmd_len
;
SCp
->
sc_data_direction
=
SCp
->
sc_old_data_direction
;
SCp
->
underflow
=
SCp
->
old_underflow
;
}
free_slot
(
slot
,
hostdata
);
SCp
->
host_scribble
=
NULL
;
SCp
->
result
=
result
;
SCp
->
scsi_done
(
SCp
);
#ifdef NCR_700_DEBUG
if
(
NCR_700_get_depth
(
SCp
->
device
)
==
0
||
NCR_700_get_depth
(
SCp
->
device
)
>
NCR_700_MAX_TAGS
)
printk
(
KERN_ERR
"Invalid depth in NCR_700_scsi_done(): %d
\n
"
,
NCR_700_get_depth
(
SCp
->
device
));
#endif
/* NCR_700_DEBUG */
NCR_700_set_depth
(
SCp
->
device
,
NCR_700_get_depth
(
SCp
->
device
)
-
1
);
SCp
->
host_scribble
=
NULL
;
SCp
->
result
=
result
;
SCp
->
scsi_done
(
SCp
);
}
else
{
printk
(
KERN_ERR
"53c700: SCSI DONE HAS NULL SCp
\n
"
);
}
...
...
@@ -1048,7 +1069,6 @@ process_script_interrupt(__u32 dsps, __u32 dsp, Scsi_Cmnd *SCp,
* of the command */
SCp
->
cmnd
[
6
]
=
NCR_700_INTERNAL_SENSE_MAGIC
;
SCp
->
cmnd
[
7
]
=
hostdata
->
status
[
0
];
SCp
->
cmnd
[
8
]
=
SCp
->
use_sg
;
SCp
->
use_sg
=
0
;
SCp
->
sc_data_direction
=
SCSI_DATA_READ
;
pci_dma_sync_single
(
hostdata
->
pci_dev
,
...
...
@@ -1885,6 +1905,10 @@ NCR_700_queuecommand(Scsi_Cmnd *SCp, void (*done)(Scsi_Cmnd *))
printk
(
KERN_WARNING
"scsi%d (%d:%d) Target is suffering from tag starvation.
\n
"
,
SCp
->
host
->
host_no
,
SCp
->
target
,
SCp
->
lun
);
NCR_700_set_flag
(
SCp
->
device
,
NCR_700_DEV_TAG_STARVATION_WARNED
);
}
/* Release the slot and ajust the depth before refusing
* the command */
free_slot
(
slot
,
hostdata
);
NCR_700_set_depth
(
SCp
->
device
,
NCR_700_get_depth
(
SCp
->
device
)
-
1
);
return
1
;
}
slot
->
tag
=
SCp
->
device
->
current_tag
++
;
...
...
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