Add !IS_ENABLED(CONFIG_SATA_HOST) to ata_eh_set_lpm() to allow compiler to optimize out the function for non-SATA configs (for PATA hosts "ap && !ap->ops->set_lpm" condition is always true so it's sufficient for the function to return zero). Code size savings on m68k arch using (modified) atari_defconfig: text data bss dec hex filename before: 17353 18 0 17371 43db drivers/ata/libata-eh.o after: 16607 18 0 16625 40f1 drivers/ata/libata-eh.o Reviewed-by: Christoph Hellwig <hch@xxxxxx> Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@xxxxxxxxxxx> --- drivers/ata/libata-eh.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/ata/libata-eh.c b/drivers/ata/libata-eh.c index 04275f4c8d36..8dc33b6832f0 100644 --- a/drivers/ata/libata-eh.c +++ b/drivers/ata/libata-eh.c @@ -3443,7 +3443,8 @@ static int ata_eh_set_lpm(struct ata_link *link, enum ata_lpm_policy policy, int rc; /* if the link or host doesn't do LPM, noop */ - if ((link->flags & ATA_LFLAG_NO_LPM) || (ap && !ap->ops->set_lpm)) + if (!IS_ENABLED(CONFIG_SATA_HOST) || + (link->flags & ATA_LFLAG_NO_LPM) || (ap && !ap->ops->set_lpm)) return 0; /* -- 2.24.1
