From 843822ad631889596d67716e6edbcde608aeba81 Mon Sep 17 00:00:00 2001
From: Hannes Reinecke <hare@suse.de>
Date: Mon, 23 Oct 2006 15:24:23 +0200
Subject: [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: Hannes Reinecke <hare@suse.de>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
---
drivers/scsi/aic7xxx/aic79xx_osm.c | 16 +++++++++++++++-
1 file changed, 15 insertions(+), 1 deletion(-)
(limited to 'drivers')
diff --git a/drivers/scsi/aic7xxx/aic79xx_osm.c b/drivers/scsi/aic7xxx/aic79xx_osm.c
index 5e13046..e7a32f8 100644
--- a/drivers/scsi/aic7xxx/aic79xx_osm.c
+++ b/drivers/scsi/aic7xxx/aic79xx_osm.c
@@ -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);
--
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