ide-{floppy,tape}: remove packet command stack

[linux-2.6-omap-h63xx.git] / drivers / ide / ide-floppy.c

diff --git a/drivers/ide/ide-floppy.c b/drivers/ide/ide-floppy.c
index 41bb61037da2b82aa4ebe0e7e62bc5c6ed9f3e57..58cd6e6c687dd32944889bfa301c9596bd66cec3 100644 (file)
--- a/drivers/ide/ide-floppy.c
+++ b/drivers/ide/ide-floppy.c
@@ -75,13 +75,6 @@
  */
 #define IDEFLOPPY_PC_BUFFER_SIZE       256
 
-/*
- * In various places in the driver, we need to allocate storage for packet
- * commands, which will remain valid while we leave the driver to wait for
- * an interrupt or a timeout event.
- */
-#define IDEFLOPPY_PC_STACK             (10 + IDEFLOPPY_MAX_PC_RETRIES)
-
 /* format capacities descriptor codes */
 #define CAPACITY_INVALID       0x00
 #define CAPACITY_UNFORMATTED   0x01
@@ -104,11 +97,10 @@ typedef struct ide_floppy_obj {
        struct ide_atapi_pc *pc;
        /* Last failed packet command */
        struct ide_atapi_pc *failed_pc;
-       /* Packet command stack */
-       struct ide_atapi_pc pc_stack[IDEFLOPPY_PC_STACK];
-       /* Next free packet command storage space */
-       int pc_stack_index;
+       /* used for blk_{fs,pc}_request() requests */
+       struct ide_atapi_pc queued_pc;
 
+       struct ide_atapi_pc request_sense_pc;
        struct request request_sense_rq;
 
        /* Last error information */
@@ -296,15 +288,6 @@ static void idefloppy_queue_pc_head(ide_drive_t *drive, struct ide_atapi_pc *pc,
        ide_do_drive_cmd(drive, rq);
 }
 
-static struct ide_atapi_pc *idefloppy_next_pc_storage(ide_drive_t *drive)
-{
-       idefloppy_floppy_t *floppy = drive->driver_data;
-
-       if (floppy->pc_stack_index == IDEFLOPPY_PC_STACK)
-               floppy->pc_stack_index = 0;
-       return (&floppy->pc_stack[floppy->pc_stack_index++]);
-}
-
 static void ide_floppy_callback(ide_drive_t *drive)
 {
        idefloppy_floppy_t *floppy = drive->driver_data;
@@ -365,10 +348,9 @@ static void idefloppy_retry_pc(ide_drive_t *drive)
 {
        struct ide_floppy_obj *floppy = drive->driver_data;
        struct request *rq = &floppy->request_sense_rq;
-       struct ide_atapi_pc *pc;
+       struct ide_atapi_pc *pc = &floppy->request_sense_pc;
 
        (void)ide_read_error(drive);
-       pc = idefloppy_next_pc_storage(drive);
        idefloppy_create_request_sense_cmd(pc);
        idefloppy_queue_pc_head(drive, pc, rq);
 }
@@ -629,12 +611,12 @@ static ide_startstop_t idefloppy_do_request(ide_drive_t *drive,
                        idefloppy_end_request(drive, 0, 0);
                        return ide_stopped;
                }
-               pc = idefloppy_next_pc_storage(drive);
+               pc = &floppy->queued_pc;
                idefloppy_create_rw_cmd(floppy, pc, rq, block);
        } else if (blk_special_request(rq)) {
                pc = (struct ide_atapi_pc *) rq->buffer;
        } else if (blk_pc_request(rq)) {
-               pc = idefloppy_next_pc_storage(drive);
+               pc = &floppy->queued_pc;
                idefloppy_blockpc_cmd(floppy, pc, rq);
        } else {
                blk_dump_rq_flags(rq,
@@ -1010,7 +992,7 @@ static void idefloppy_setup(ide_drive_t *drive, idefloppy_floppy_t *floppy)
        u8 gcw[2];
 
        *((u16 *)&gcw) = id[ATA_ID_CONFIG];
-       floppy->pc = floppy->pc_stack;
+
        drive->pc_callback = ide_floppy_callback;
 
        if (((gcw[0] & 0x60) >> 5) == 1)