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scsi: acornscsi: mark calc_sync_xfer as __maybe_unused

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The calc_sync_xfer function is only used if CONFIG_SCSI_ACORNSCSI_SYNC
is set, otherwise we get a compiler warning:

scsi/arm/acornscsi.c:680:15: warning: 'calc_sync_xfer' defined but not used [-Wunused-function]
 unsigned char calc_sync_xfer(unsigned int period, unsigned int offset)

This marks the function as __maybe_unused to shut up the warning and
silently drop the function in the object code when there is no caller.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This commit is contained in:
Arnd Bergmann 2016-01-27 16:57:19 +01:00 committed by Martin K. Petersen
parent 28558f5af5
commit 6fea7f6fbc
1 changed files with 2 additions and 1 deletions
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3
drivers/scsi/arm/acornscsi.c
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@ -677,7 +677,8 @@ int round_period(unsigned int period)
* Copyright: Copyright (c) 1996 John Shifflett, GeoLog Consulting
*/
static
unsigned char calc_sync_xfer(unsigned int period, unsigned int offset)
unsigned char __maybe_unused calc_sync_xfer(unsigned int period,
unsigned int offset)
{
return sync_xfer_table[round_period(period)].reg_value |
((offset < SDTR_SIZE) ? offset : SDTR_SIZE);