iv/linux
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

[SCSI] aic7xxx: cap maxsync according to correct card limits

Browse Source 
Not doing this can cause cards less than u160 capable to send out PPR
offers to devices they can't then deliver on ... causing some devices to
get a bit confused.  Fix by capping the start syncrate at the
appropriate level according to the card capabilities.

Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
This commit is contained in:
James Bottomley 2007-07-30 09:52:25 -05:00 committed by James Bottomley
parent 28f85009e0
commit 142009a3df
1 changed files with 21 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

22
drivers/scsi/aic7xxx/aic7xxx_core.c
View File

@ -1701,7 +1701,16 @@ ahc_find_syncrate(struct ahc_softc *ahc, u_int *period,
if ((*ppr_options & MSG_EXT_PPR_DT_REQ) == 0
&& maxsync < AHC_SYNCRATE_ULTRA2)
maxsync = AHC_SYNCRATE_ULTRA2;
/* Now set the maxsync based on the card capabilities
* DT is already done above */
if ((ahc->features & (AHC_DT | AHC_ULTRA2)) == 0
&& maxsync < AHC_SYNCRATE_ULTRA)
maxsync = AHC_SYNCRATE_ULTRA;
if ((ahc->features & (AHC_DT | AHC_ULTRA2 | AHC_ULTRA)) == 0
&& maxsync < AHC_SYNCRATE_FAST)
maxsync = AHC_SYNCRATE_FAST;
for (syncrate = &ahc_syncrates[maxsync];
syncrate->rate != NULL;
syncrate++) {
@ -1765,6 +1774,17 @@ ahc_find_period(struct ahc_softc *ahc, u_int scsirate, u_int maxsync)
else
scsirate &= SXFR;
/* now set maxsync based on card capabilities */
if ((ahc->features & AHC_DT) == 0 && maxsync < AHC_SYNCRATE_ULTRA2)
maxsync = AHC_SYNCRATE_ULTRA2;
if ((ahc->features & (AHC_DT | AHC_ULTRA2)) == 0
&& maxsync < AHC_SYNCRATE_ULTRA)
maxsync = AHC_SYNCRATE_ULTRA;
if ((ahc->features & (AHC_DT | AHC_ULTRA2 | AHC_ULTRA)) == 0
&& maxsync < AHC_SYNCRATE_FAST)
maxsync = AHC_SYNCRATE_FAST;
syncrate = &ahc_syncrates[maxsync];
while (syncrate->rate != NULL) {