diff options
Diffstat (limited to 'target/linux/layerscape/patches-5.4/701-net-0404-LF-457-ocelot-tsn-clean-preempt-interrupt-status.patch')
| -rw-r--r-- | target/linux/layerscape/patches-5.4/701-net-0404-LF-457-ocelot-tsn-clean-preempt-interrupt-status.patch | 61 |
1 files changed, 0 insertions, 61 deletions
diff --git a/target/linux/layerscape/patches-5.4/701-net-0404-LF-457-ocelot-tsn-clean-preempt-interrupt-status.patch b/target/linux/layerscape/patches-5.4/701-net-0404-LF-457-ocelot-tsn-clean-preempt-interrupt-status.patch deleted file mode 100644 index 96897b5e2a..0000000000 --- a/target/linux/layerscape/patches-5.4/701-net-0404-LF-457-ocelot-tsn-clean-preempt-interrupt-status.patch +++ /dev/null @@ -1,61 +0,0 @@ -From 5d246e343440ee4915109dac66543d02d71ca900 Mon Sep 17 00:00:00 2001 -From: Xiaoliang Yang <xiaoliang.yang_1@nxp.com> -Date: Tue, 11 Feb 2020 15:33:46 +0800 -Subject: [PATCH] LF-457: ocelot: tsn: clean preempt interrupt status - -The INTB interrupt is used both for 1588 interrupt and preemption status -change interrupt on each port. So clean preempt status interrupt in IRQ -handle function. Without handling it, driver may get interrupt storm. - -Signed-off-by: Xiaoliang Yang <xiaoliang.yang_1@nxp.com> -Reviewed-by: Po Liu <Po.Liu@nxp.com> ---- - drivers/net/dsa/ocelot/felix.c | 5 +---- - drivers/net/ethernet/mscc/ocelot_tsn.c | 14 ++++++++++++++ - include/soc/mscc/ocelot.h | 1 + - 3 files changed, 16 insertions(+), 4 deletions(-) - ---- a/drivers/net/dsa/ocelot/felix.c -+++ b/drivers/net/dsa/ocelot/felix.c -@@ -688,12 +688,9 @@ static irqreturn_t felix_irq_handler(int - - /* The INTB interrupt is used for both PTP TX timestamp interrupt - * and preemption status change interrupt on each port. -- * -- * - Get txtstamp if have -- * - TODO: handle preemption. Without handling it, driver may get -- * interrupt storm. - */ - -+ ocelot_preempt_irq_clean(ocelot); - ocelot_get_txtstamp(ocelot); - - return IRQ_HANDLED; ---- a/drivers/net/ethernet/mscc/ocelot_tsn.c -+++ b/drivers/net/ethernet/mscc/ocelot_tsn.c -@@ -1570,3 +1570,17 @@ int ocelot_dscp_set(struct ocelot *ocelo - - return 0; - } -+ -+void ocelot_preempt_irq_clean(struct ocelot *ocelot) -+{ -+ struct ocelot_port *ocelot_port; -+ int port; -+ u32 val; -+ -+ val = DEV_GMII_MM_STATISTICS_MM_STATUS_PRMPT_ACTIVE_STICKY; -+ for (port = 0; port < ocelot->num_phys_ports; port++) { -+ ocelot_port = ocelot->ports[port]; -+ ocelot_port_rmwl(ocelot_port, val, val, -+ DEV_GMII_MM_STATISTICS_MM_STATUS); -+ } -+} ---- a/include/soc/mscc/ocelot.h -+++ b/include/soc/mscc/ocelot.h -@@ -592,4 +592,5 @@ int ocelot_rtag_parse_enable(struct ocel - int ocelot_dscp_set(struct ocelot *ocelot, int port, - bool enable, const u8 dscp_ix, - struct tsn_qos_switch_dscp_conf *c); -+void ocelot_preempt_irq_clean(struct ocelot *ocelot); - #endif |