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authorMarko Kohtala <marko.kohtala@gmail.com>2006-01-06 00:19:44 -0800
committerLinus Torvalds <torvalds@g5.osdl.org>2006-01-06 08:33:56 -0800
commit742ec650e9b63ea61891455bb6f76bac37025c78 (patch)
tree993a734fc7c412c0a0c37e107bff761e0071cfcf /drivers/media/video/cpia_pp.c
parentc660629059abbbd0eb56e12f9bb4494f01800bbc (diff)
[PATCH] parport: phase fixes
Did not move the parport interface properly into IEEE1284_PH_REV_IDLE phase at end of data due to comparing bytes with nibbles. Internal phase IEEE1284_PH_HBUSY_DNA became unused, so remove it. Signed-off-by: Marko Kohtala <marko.kohtala@gmail.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'drivers/media/video/cpia_pp.c')
-rw-r--r--drivers/media/video/cpia_pp.c30
1 files changed, 13 insertions, 17 deletions
diff --git a/drivers/media/video/cpia_pp.c b/drivers/media/video/cpia_pp.c
index ddf184f95d8..6861d408f1b 100644
--- a/drivers/media/video/cpia_pp.c
+++ b/drivers/media/video/cpia_pp.c
@@ -170,16 +170,9 @@ static size_t cpia_read_nibble (struct parport *port,
/* Does the error line indicate end of data? */
if (((i /*& 1*/) == 0) &&
(parport_read_status(port) & PARPORT_STATUS_ERROR)) {
- port->physport->ieee1284.phase = IEEE1284_PH_HBUSY_DNA;
- DBG("%s: No more nibble data (%d bytes)\n",
- port->name, i/2);
-
- /* Go to reverse idle phase. */
- parport_frob_control (port,
- PARPORT_CONTROL_AUTOFD,
- PARPORT_CONTROL_AUTOFD);
- port->physport->ieee1284.phase = IEEE1284_PH_REV_IDLE;
- break;
+ DBG("%s: No more nibble data (%d bytes)\n",
+ port->name, i/2);
+ goto end_of_data;
}
/* Event 7: Set nAutoFd low. */
@@ -227,18 +220,21 @@ static size_t cpia_read_nibble (struct parport *port,
byte = nibble;
}
- i /= 2; /* i is now in bytes */
-
if (i == len) {
/* Read the last nibble without checking data avail. */
- port = port->physport;
- if (parport_read_status (port) & PARPORT_STATUS_ERROR)
- port->ieee1284.phase = IEEE1284_PH_HBUSY_DNA;
+ if (parport_read_status (port) & PARPORT_STATUS_ERROR) {
+ end_of_data:
+ /* Go to reverse idle phase. */
+ parport_frob_control (port,
+ PARPORT_CONTROL_AUTOFD,
+ PARPORT_CONTROL_AUTOFD);
+ port->physport->ieee1284.phase = IEEE1284_PH_REV_IDLE;
+ }
else
- port->ieee1284.phase = IEEE1284_PH_HBUSY_DAVAIL;
+ port->physport->ieee1284.phase = IEEE1284_PH_HBUSY_DAVAIL;
}
- return i;
+ return i/2;
}
/* CPiA nonstandard "Nibble Stream" mode (2 nibbles per cycle, instead of 1)