diff options
Diffstat (limited to 'drivers/ide/ide-floppy.c')
| -rw-r--r-- | drivers/ide/ide-floppy.c | 32 |
1 files changed, 7 insertions, 25 deletions
diff --git a/drivers/ide/ide-floppy.c b/drivers/ide/ide-floppy.c index 41bb61037da..58cd6e6c687 100644 --- 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) |