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Commit 843822ad authored by Hannes Reinecke's avatar Hannes Reinecke Committed by James Bottomley
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[SCSI] aic79xx: set precompensation 



aic79xx has a special 'iocell' chip which handles the precompensation.
If it's set via DV we should make sure to set the chip correctly, too.

Signed-off-by: default avatarHannes Reinecke <hare@suse.de>
Signed-off-by: default avatarJames Bottomley <James.Bottomley@SteelEye.com>
parent 8883c1f1

drivers/scsi/aic7xxx/aic79xx_osm.c

+15 −1
Original line number Diff line number Diff line
@@ -2636,8 +2636,22 @@ static void ahd_linux_set_pcomp_en(struct scsi_target *starget, int pcomp) 
		       pcomp ? "Enable" : "Disable");

#endif



	if (pcomp)

	if (pcomp) {

		uint8_t precomp;



		if (ahd->unit < ARRAY_SIZE(aic79xx_iocell_info)) {

			struct ahd_linux_iocell_opts *iocell_opts;



			iocell_opts = &aic79xx_iocell_info[ahd->unit];

			precomp = iocell_opts->precomp;

		} else {

			precomp = AIC79XX_DEFAULT_PRECOMP;

		}

		ppr_options |= MSG_EXT_PPR_PCOMP_EN;

		AHD_SET_PRECOMP(ahd, precomp);

	} else {

		AHD_SET_PRECOMP(ahd, 0);

	}



	ahd_compile_devinfo(&devinfo, shost->this_id, starget->id, 0,

			    starget->channel + 'A', ROLE_INITIATOR);