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authorMatthew Wilcox <matthew@wil.cx>2005-11-29 23:08:40 -0500
committerJames Bottomley <jejb@mulgrave.(none)>2005-12-13 17:27:10 -0700
commit322e079f1b606e46b79bb8b8e6cf6110b5f2aa3f (patch)
tree541a03bb0d7ff2809069122e5b10431072124587 /drivers/scsi
parent1a68de5c08be8c77c4ad208306187bd95107c7cd (diff)
[SCSI] Negotiate correctly with async-only devices
When we got a device only capable of async, we would zero out goal->period which would cause us to try PPR negotiations. Leave goal->period alone, and check goal->offset before doing PPR. Kudos to Daniel Forsgren for figuring this out. Signed-off-by: Matthew Wilcox <matthew@wil.cx> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
Diffstat (limited to 'drivers/scsi')
-rw-r--r--drivers/scsi/sym53c8xx_2/sym_hipd.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/scsi/sym53c8xx_2/sym_hipd.c b/drivers/scsi/sym53c8xx_2/sym_hipd.c
index a7420cad454..1564ca203a3 100644
--- a/drivers/scsi/sym53c8xx_2/sym_hipd.c
+++ b/drivers/scsi/sym53c8xx_2/sym_hipd.c
@@ -1405,7 +1405,6 @@ static void sym_check_goals(struct sym_hcb *np, struct scsi_target *starget,
goal->iu = 0;
goal->dt = 0;
goal->qas = 0;
- goal->period = 0;
goal->offset = 0;
return;
}
@@ -1465,7 +1464,8 @@ static int sym_prepare_nego(struct sym_hcb *np, struct sym_ccb *cp, u_char *msgp
* Many devices implement PPR in a buggy way, so only use it if we
* really want to.
*/
- if (goal->iu || goal->dt || goal->qas || (goal->period < 0xa)) {
+ if (goal->offset &&
+ (goal->iu || goal->dt || goal->qas || (goal->period < 0xa))) {
nego = NS_PPR;
} else if (spi_width(starget) != goal->width) {
nego = NS_WIDE;