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| author | Grygorii Strashko <grygorii.strashko@ti.com> | 2020-11-12 13:15:46 +0200 |
|---|---|---|
| committer | Jakub Kicinski <kuba@kernel.org> | 2020-11-13 14:20:42 -0800 |
| commit | 2b5668733050fca85f0ab458c5b91732f9496a38 (patch) | |
| tree | d6ec52131f6c4443f4623325723b352b65c6f0c3 /drivers/net/ethernet/ti/cpsw.c | |
| parent | 1395f8df87b0b897eb363625ddbc09891d2fba62 (diff) | |
| download | linux-2b5668733050fca85f0ab458c5b91732f9496a38.tar.gz linux-2b5668733050fca85f0ab458c5b91732f9496a38.tar.bz2 linux-2b5668733050fca85f0ab458c5b91732f9496a38.zip | |
net: ethernet: ti: cpsw: fix cpts irq after suspend
Depending on the SoC/platform the CPSW can completely lose context after a
suspend/resume cycle, including CPSW wrapper (WR) which will cause reset of
WR_C0_MISC_EN register, so CPTS IRQ will became disabled.
Fix it by moving CPTS IRQ enabling in cpsw_ndo_open() where CPTS is
actually started.
Fixes: 84ea9c0a95d7 ("net: ethernet: ti: cpsw: enable cpts irq")
Reported-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Grygorii Strashko <grygorii.strashko@ti.com>
Tested-by: Tony Lindgren <tony@atomide.com>
Link: https://lore.kernel.org/r/20201112111546.20343-1-grygorii.strashko@ti.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'drivers/net/ethernet/ti/cpsw.c')
| -rw-r--r-- | drivers/net/ethernet/ti/cpsw.c | 10 |
1 files changed, 6 insertions, 4 deletions
diff --git a/drivers/net/ethernet/ti/cpsw.c b/drivers/net/ethernet/ti/cpsw.c index 9fd1f77190ad..fa2d1025cbb2 100644 --- a/drivers/net/ethernet/ti/cpsw.c +++ b/drivers/net/ethernet/ti/cpsw.c @@ -838,9 +838,12 @@ static int cpsw_ndo_open(struct net_device *ndev) if (ret < 0) goto err_cleanup; - if (cpts_register(cpsw->cpts)) - dev_err(priv->dev, "error registering cpts device\n"); - + if (cpsw->cpts) { + if (cpts_register(cpsw->cpts)) + dev_err(priv->dev, "error registering cpts device\n"); + else + writel(0x10, &cpsw->wr_regs->misc_en); + } } cpsw_restore(priv); @@ -1716,7 +1719,6 @@ static int cpsw_probe(struct platform_device *pdev) /* Enable misc CPTS evnt_pend IRQ */ cpts_set_irqpoll(cpsw->cpts, false); - writel(0x10, &cpsw->wr_regs->misc_en); skip_cpts: cpsw_notice(priv, probe, |