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ide-atapi: add a buffer-arg to ide_queue_pc_tail

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This is in preparation of removing ide_atapi_pc. Expose the buffer as an
argument to ide_queue_pc_tail with later replacing it with local buffer
or even kmalloc'ed one if needed due to stack usage constraints.

Also, add the possibility of passing a NULL-ptr buffer for cmds which
don't transfer data besides the cdb. While at it, switch to local buffer
in idetape_get_mode_sense_results().

There should be no functional change resulting from this patch.

Signed-off-by: Borislav Petkov <petkovbb@gmail.com>
This commit is contained in:
Borislav Petkov 2009-05-02 10:26:12 +02:00
parent 5a0e43b5e2
commit b13345f39d
5 changed files with 41 additions and 43 deletions
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2
include/linux/ide.h
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@ -1161,7 +1161,7 @@ enum {
};
int ide_queue_pc_tail(ide_drive_t *, struct gendisk *, struct ide_atapi_pc *,
unsigned int);
void *, unsigned int);
int ide_do_test_unit_ready(ide_drive_t *, struct gendisk *);
int ide_do_start_stop(ide_drive_t *, struct gendisk *, int);