Hi,
This patch helps my system boot faster, esp when using a serial
console, since it ratelimits the "SCSI parity error detected" messages
on bootup. I've got a dual channel card attached to an old P1000
library with two DLT70000 tape drives installed. Works great, just
takes forever to bootup when I have tons of message spewing out.
Now they look like this:
[ 66.245351] sym0: SCSI parity error detected: SCR2=1 DBC=11000028 SBCL=ae
[ 66.327105] sym0: SCSI parity error detected: SCR2=1 DBC=11000028 SBCL=ae
[ 66.408925] sym0: SCSI parity error detected: SCR2=1 DBC=11000028 SBCL=ae
[ 66.490753] sym0: SCSI parity error detected: SCR2=1 DBC=11000028 SBCL=ae
[ 67.061737] scsi 1:0:3:0: ABORT operation started
[ 71.556526] __ratelimit: 11248 callbacks suppressed
[ 71.614935] sym0: SCSI parity error detected: SCR2=1 DBC=11000028 SBCL=ae
[ 71.696665] sym0: SCSI parity error detected: SCR2=1 DBC=11000028 SBCL=ae
[ 71.778415] sym0: SCSI parity error detected: SCR2=1 DBC=11000028 SBCL=ae
[ 71.860242] sym0: SCSI parity error detected: SCR2=1 DBC=11000028 SBCL=ae
[ 71.942065] sym0: SCSI parity error detected: SCR2=1 DBC=11000028 SBCL=ae
and it's *much* nicer. But I'll bet this patch is space damaged when
I send it. I'll resend it if need be from home.
Thanks.
--- ../2.6.29/drivers/scsi/sym53c8xx_2/sym_hipd.c 2009-05-29
13:09:50.000000000 -0400
+++ drivers/scsi/sym53c8xx_2/sym_hipd.c 2009-05-21 11:11:17.000000000
-0400
@@ -2278,8 +2278,9 @@
int phase = cmd & 7;
struct sym_ccb *cp = sym_ccb_from_dsa(np, dsa);
- printf("%s: SCSI parity error detected: SCR1=%d DBC=%x
SBCL=%x\n",
- sym_name(np), hsts, dbc, sbcl);
+ if (printk_ratelimit())
+ printf("%s: SCSI parity error detected: SCR2=%d DBC=%x SBCL=%x\n",
+ sym_name(np), hsts, dbc, sbcl);
/*
* Check that the chip is connected to the SCSI BUS.
--
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