ata: remove EXPORT_SYMBOL_GPL()s not used by modules

Remove EXPORT_SYMBOL_GPL()s for functions used only by
the core libata code.

Code size savings on m68k arch using (modified) atari_defconfig:

   text    data     bss     dec     hex filename
before:
  39838     573      40   40451    9e03 drivers/ata/libata-core.o
  21071     105     576   21752    54f8 drivers/ata/libata-scsi.o
  17519      18       0   17537    4481 drivers/ata/libata-eh.o
after:
  39688     573      40   40301    9d6d drivers/ata/libata-core.o
  21040     105     576   21721    54d9 drivers/ata/libata-scsi.o
  17405      18       0   17423    440f drivers/ata/libata-eh.o
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>

drivers/ata/libata-core.c

@@ -80,7 +80,6 @@ const struct ata_port_operations ata_base_port_ops = {
 	.sched_eh		= ata_std_sched_eh,
 	.end_eh			= ata_std_end_eh,
 };
-EXPORT_SYMBOL_GPL(ata_base_port_ops);
 
 const struct ata_port_operations sata_port_ops = {
 	.inherits		= &ata_base_port_ops,
@@ -902,7 +901,6 @@ void ata_unpack_xfermask(unsigned long xfer_mask, unsigned long *pio_mask,
 	if (udma_mask)
 		*udma_mask = (xfer_mask & ATA_MASK_UDMA) >> ATA_SHIFT_UDMA;
 }
-EXPORT_SYMBOL_GPL(ata_unpack_xfermask);
 
 static const struct ata_xfer_ent {
 	int shift, bits;
@@ -3425,7 +3423,6 @@ u8 ata_timing_cycle2mode(unsigned int xfer_shift, int cycle)
 
 	return last_mode;
 }
-EXPORT_SYMBOL_GPL(ata_timing_cycle2mode);
 
 /**
  *	ata_down_xfermask_limit - adjust dev xfer masks downward
@@ -5051,7 +5048,6 @@ void ata_sg_init(struct ata_queued_cmd *qc, struct scatterlist *sg,
 	qc->n_elem = n_elem;
 	qc->cursg = qc->sg;
 }
-EXPORT_SYMBOL_GPL(ata_sg_init);
 
 #ifdef CONFIG_HAS_DMA
 
@@ -6157,7 +6153,6 @@ void ata_host_get(struct ata_host *host)
 {
 	kref_get(&host->kref);
 }
-EXPORT_SYMBOL_GPL(ata_host_get);
 
 void ata_host_put(struct ata_host *host)
 {

drivers/ata/libata-eh.c

@@ -1215,7 +1215,6 @@ void ata_eh_thaw_port(struct ata_port *ap)
 
 	DPRINTK("ata%u port thawed\n", ap->print_id);
 }
-EXPORT_SYMBOL_GPL(ata_eh_thaw_port);
 
 static void ata_eh_scsidone(struct scsi_cmnd *scmd)
 {
@@ -1250,7 +1249,6 @@ void ata_eh_qc_complete(struct ata_queued_cmd *qc)
 	scmd->retries = scmd->allowed;
 	__ata_eh_qc_complete(qc);
 }
-EXPORT_SYMBOL_GPL(ata_eh_qc_complete);
 
 /**
  *	ata_eh_qc_retry - Tell midlayer to retry an ATA command after EH
@@ -1270,7 +1268,6 @@ void ata_eh_qc_retry(struct ata_queued_cmd *qc)
 		scmd->allowed++;
 	__ata_eh_qc_complete(qc);
 }
-EXPORT_SYMBOL_GPL(ata_eh_qc_retry);
 
 /**
  *	ata_dev_disable - disable ATA device
@@ -4041,7 +4038,6 @@ void ata_do_eh(struct ata_port *ap, ata_prereset_fn_t prereset,
 
 	ata_eh_finish(ap);
 }
-EXPORT_SYMBOL_GPL(ata_do_eh);
 
 /**
  *	ata_std_error_handler - standard error handler

drivers/ata/libata-scsi.c

@@ -4536,7 +4536,6 @@ void ata_scsi_simulate(struct ata_device *dev, struct scsi_cmnd *cmd)
 
 	cmd->scsi_done(cmd);
 }
-EXPORT_SYMBOL_GPL(ata_scsi_simulate);
 
 int ata_scsi_add_hosts(struct ata_host *host, struct scsi_host_template *sht)
 {