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cxgbe(4): Completely ignore all top level interrupts that are not enabled.

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The driver used to log any non-zero cause and when running with a single
line interrupt it would spam the console/logs with reports of interrupts
that are of no interest to anyone.

MFC after:	1 week
Sponsored by:	Chelsio Communications
This commit is contained in:
Navdeep Parhar 2019-07-12 20:59:10 +00:00
parent 026e450262
commit 6620004df5
1 changed files with 6 additions and 7 deletions
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13
sys/dev/cxgbe/common/t4_hw.c
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@ -4023,17 +4023,16 @@ t4_handle_intr(struct adapter *adap, const struct intr_info *ii,
bool rc;
const struct intr_action *action;
/* read and display cause. */
cause = t4_read_reg(adap, ii->cause_reg);
if (verbose || cause != 0)
t4_show_intr_info(adap, ii, cause);
/*
* The top level interrupt cause is a bit special and we need to ignore
* the bits that are not in the enable. Note that we did display them
* above in t4_show_intr_info but will not clear them.
* Read and display cause. Note that the top level PL_INT_CAUSE is a
* bit special and we need to completely ignore the bits that are not in
* PL_INT_ENABLE.
*/
cause = t4_read_reg(adap, ii->cause_reg);
if (ii->cause_reg == A_PL_INT_CAUSE)
cause &= t4_read_reg(adap, ii->enable_reg);
if (verbose || cause != 0)
t4_show_intr_info(adap, ii, cause);
fatal = cause & ii->fatal;
if (fatal != 0 && ii->flags & NONFATAL_IF_DISABLED)
fatal &= t4_read_reg(adap, ii->enable_reg);