diff options
| author | Sudarsana Reddy Kalluru <sudarsana.kalluru@cavium.com> | 2018-06-19 07:58:01 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2018-06-20 01:15:34 +0300 |
| commit | 3935a70968820c3994db4de7e6e1c7e814bff875 (patch) | |
| tree | fd6e6edd4ed74f7f77f1b3dc94800ab452726188 | |
| parent | 4f9de4df901fb84709fe3a864dfa4eaf35700f68 (diff) | |
| download | linux-3935a70968820c3994db4de7e6e1c7e814bff875.tar.xz | |
qed: Add sanity check for SIMD fastpath handler.
Avoid calling a SIMD fastpath handler if it is NULL. The check is needed
to handle an unlikely scenario where unsolicited interrupt is destined to
a PF in INTa mode.
Fixes: fe56b9e6a ("qed: Add module with basic common support")
Signed-off-by: Sudarsana Reddy Kalluru <Sudarsana.Kalluru@cavium.com>
Signed-off-by: Ariel Elior <ariel.elior@cavium.com>
Signed-off-by: Michal Kalderon <Michal.Kalderon@cavium.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
| -rw-r--r-- | drivers/net/ethernet/qlogic/qed/qed_main.c | 12 |
1 files changed, 10 insertions, 2 deletions
diff --git a/drivers/net/ethernet/qlogic/qed/qed_main.c b/drivers/net/ethernet/qlogic/qed/qed_main.c index b04d57ca5176..5c10fd7210c3 100644 --- a/drivers/net/ethernet/qlogic/qed/qed_main.c +++ b/drivers/net/ethernet/qlogic/qed/qed_main.c @@ -567,8 +567,16 @@ static irqreturn_t qed_single_int(int irq, void *dev_instance) /* Fastpath interrupts */ for (j = 0; j < 64; j++) { if ((0x2ULL << j) & status) { - hwfn->simd_proto_handler[j].func( - hwfn->simd_proto_handler[j].token); + struct qed_simd_fp_handler *p_handler = + &hwfn->simd_proto_handler[j]; + + if (p_handler->func) + p_handler->func(p_handler->token); + else + DP_NOTICE(hwfn, + "Not calling fastpath handler as it is NULL [handler #%d, status 0x%llx]\n", + j, status); + status &= ~(0x2ULL << j); rc = IRQ_HANDLED; } |