diff options
| -rw-r--r-- | drivers/ide/ide-floppy.c | 7 | ||||
| -rw-r--r-- | drivers/ide/ide-io.c | 15 | ||||
| -rw-r--r-- | drivers/ide/ide-tape.c | 4 | ||||
| -rw-r--r-- | drivers/scsi/ide-scsi.c | 6 | ||||
| -rw-r--r-- | include/linux/ide.h | 25 |
5 files changed, 24 insertions, 33 deletions
diff --git a/drivers/ide/ide-floppy.c b/drivers/ide/ide-floppy.c index 0039789b0eb..f05fbc2bd7a 100644 --- a/drivers/ide/ide-floppy.c +++ b/drivers/ide/ide-floppy.c @@ -262,10 +262,7 @@ static void ide_floppy_io_buffers(ide_drive_t *drive, struct ide_atapi_pc *pc, if (bcount) { printk(KERN_ERR "%s: leftover data in %s, bcount == %d\n", drive->name, __func__, bcount); - if (direction) - ide_atapi_write_zeros(drive, bcount); - else - ide_atapi_discard_data(drive, bcount); + ide_pad_transfer(drive, direction, bcount); } } @@ -491,7 +488,7 @@ static ide_startstop_t idefloppy_pc_intr(ide_drive_t *drive) printk(KERN_ERR "ide-floppy: The floppy wants " "to send us more data than expected " "- discarding data\n"); - ide_atapi_discard_data(drive, bcount); + ide_pad_transfer(drive, 0, bcount); ide_set_handler(drive, &idefloppy_pc_intr, diff --git a/drivers/ide/ide-io.c b/drivers/ide/ide-io.c index 8d7c1a09e1e..788783da902 100644 --- a/drivers/ide/ide-io.c +++ b/drivers/ide/ide-io.c @@ -1642,3 +1642,18 @@ void ide_pktcmd_tf_load(ide_drive_t *drive, u32 tf_flags, u16 bcount, u8 dma) } EXPORT_SYMBOL_GPL(ide_pktcmd_tf_load); + +void ide_pad_transfer(ide_drive_t *drive, int write, int len) +{ + ide_hwif_t *hwif = drive->hwif; + u8 buf[4] = { 0 }; + + while (len > 0) { + if (write) + hwif->output_data(drive, NULL, buf, min(4, len)); + else + hwif->input_data(drive, NULL, buf, min(4, len)); + len -= 4; + } +} +EXPORT_SYMBOL_GPL(ide_pad_transfer); diff --git a/drivers/ide/ide-tape.c b/drivers/ide/ide-tape.c index 71d07d740ad..54a43b04460 100644 --- a/drivers/ide/ide-tape.c +++ b/drivers/ide/ide-tape.c @@ -395,7 +395,7 @@ static void idetape_input_buffers(ide_drive_t *drive, struct ide_atapi_pc *pc, if (bh == NULL) { printk(KERN_ERR "ide-tape: bh == NULL in " "idetape_input_buffers\n"); - ide_atapi_discard_data(drive, bcount); + ide_pad_transfer(drive, 0, bcount); return; } count = min( @@ -871,7 +871,7 @@ static ide_startstop_t idetape_pc_intr(ide_drive_t *drive) printk(KERN_ERR "ide-tape: The tape wants to " "send us more data than expected " "- discarding data\n"); - ide_atapi_discard_data(drive, bcount); + ide_pad_transfer(drive, 0, bcount); ide_set_handler(drive, &idetape_pc_intr, IDETAPE_WAIT_CMD, NULL); return ide_started; diff --git a/drivers/scsi/ide-scsi.c b/drivers/scsi/ide-scsi.c index 7964cc14615..44d8d5163a1 100644 --- a/drivers/scsi/ide-scsi.c +++ b/drivers/scsi/ide-scsi.c @@ -164,7 +164,7 @@ static void idescsi_input_buffers(ide_drive_t *drive, struct ide_atapi_pc *pc, if (bcount) { printk (KERN_ERR "ide-scsi: scatter gather table too small, discarding data\n"); - ide_atapi_discard_data(drive, bcount); + ide_pad_transfer(drive, 0, bcount); } } @@ -201,7 +201,7 @@ static void idescsi_output_buffers(ide_drive_t *drive, struct ide_atapi_pc *pc, if (bcount) { printk (KERN_ERR "ide-scsi: scatter gather table too small, padding with zeros\n"); - ide_atapi_write_zeros(drive, bcount); + ide_pad_transfer(drive, 1, bcount); } } @@ -438,7 +438,7 @@ static ide_startstop_t idescsi_pc_intr (ide_drive_t *drive) } pc->xferred += temp; pc->cur_pos += temp; - ide_atapi_discard_data(drive, bcount - temp); + ide_pad_transfer(drive, 0, bcount - temp); ide_set_handler(drive, &idescsi_pc_intr, get_timeout(pc), idescsi_expiry); return ide_started; } diff --git a/include/linux/ide.h b/include/linux/ide.h index 2053d7d86b1..7a5da394b98 100644 --- a/include/linux/ide.h +++ b/include/linux/ide.h @@ -827,6 +827,8 @@ void ide_execute_command(ide_drive_t *, u8, ide_handler_t *, unsigned int, void ide_execute_pkt_cmd(ide_drive_t *); +void ide_pad_transfer(ide_drive_t *, int, int); + ide_startstop_t __ide_error(ide_drive_t *, struct request *, u8, u8); ide_startstop_t ide_error (ide_drive_t *drive, const char *msg, byte stat); @@ -1359,27 +1361,4 @@ static inline u8 ide_read_error(ide_drive_t *drive) return hwif->INB(hwif->io_ports.error_addr); } - -/* - * Too bad. The drive wants to send us data which we are not ready to accept. - * Just throw it away. - */ -static inline void ide_atapi_discard_data(ide_drive_t *drive, unsigned bcount) -{ - ide_hwif_t *hwif = drive->hwif; - - /* FIXME: use ->input_data */ - while (bcount--) - (void)hwif->INB(hwif->io_ports.data_addr); -} - -static inline void ide_atapi_write_zeros(ide_drive_t *drive, unsigned bcount) -{ - ide_hwif_t *hwif = drive->hwif; - - /* FIXME: use ->output_data */ - while (bcount--) - hwif->OUTB(0, hwif->io_ports.data_addr); -} - #endif /* _IDE_H */ |