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| author | Andrew Jeffery <andrew@aj.id.au> | 2021-06-08 20:17:51 +0930 |
|---|---|---|
| committer | Corey Minyard <cminyard@mvista.com> | 2021-06-21 19:50:28 -0500 |
| commit | fb6379f524ff56314fa857bb5c84bd22eee41eb7 (patch) | |
| tree | 60c805a9597cabe4611bf6f18e552a685f0be5cd | |
| parent | 28651e6c4237f4aee5e0744ce37d3a50e7b1f36b (diff) | |
| download | lwn-fb6379f524ff56314fa857bb5c84bd22eee41eb7.tar.gz lwn-fb6379f524ff56314fa857bb5c84bd22eee41eb7.zip | |
ipmi: kcs_bmc: Enable IBF on open
This way devices don't get delivered IRQs when no-one is interested.
Signed-off-by: Andrew Jeffery <andrew@aj.id.au>
Message-Id: <20210608104757.582199-11-andrew@aj.id.au>
Signed-off-by: Corey Minyard <cminyard@mvista.com>
| -rw-r--r-- | drivers/char/ipmi/kcs_bmc.c | 25 | ||||
| -rw-r--r-- | drivers/char/ipmi/kcs_bmc_aspeed.c | 3 | ||||
| -rw-r--r-- | drivers/char/ipmi/kcs_bmc_npcm7xx.c | 3 |
3 files changed, 12 insertions, 19 deletions
diff --git a/drivers/char/ipmi/kcs_bmc.c b/drivers/char/ipmi/kcs_bmc.c index 91eb43746cef..03d02a848f3a 100644 --- a/drivers/char/ipmi/kcs_bmc.c +++ b/drivers/char/ipmi/kcs_bmc.c @@ -55,24 +55,12 @@ EXPORT_SYMBOL(kcs_bmc_update_status); irqreturn_t kcs_bmc_handle_event(struct kcs_bmc_device *kcs_bmc) { struct kcs_bmc_client *client; - irqreturn_t rc; + irqreturn_t rc = IRQ_NONE; spin_lock(&kcs_bmc->lock); client = kcs_bmc->client; - if (client) { + if (client) rc = client->ops->event(client); - } else { - u8 status; - - status = kcs_bmc_read_status(kcs_bmc); - if (status & KCS_BMC_STR_IBF) { - /* Ack the event by reading the data */ - kcs_bmc_read_data(kcs_bmc); - rc = IRQ_HANDLED; - } else { - rc = IRQ_NONE; - } - } spin_unlock(&kcs_bmc->lock); return rc; @@ -87,7 +75,10 @@ int kcs_bmc_enable_device(struct kcs_bmc_device *kcs_bmc, struct kcs_bmc_client if (kcs_bmc->client) { rc = -EBUSY; } else { + u8 mask = KCS_BMC_EVENT_TYPE_IBF; + kcs_bmc->client = client; + kcs_bmc_update_event_mask(kcs_bmc, mask, mask); rc = 0; } spin_unlock_irq(&kcs_bmc->lock); @@ -99,8 +90,12 @@ EXPORT_SYMBOL(kcs_bmc_enable_device); void kcs_bmc_disable_device(struct kcs_bmc_device *kcs_bmc, struct kcs_bmc_client *client) { spin_lock_irq(&kcs_bmc->lock); - if (client == kcs_bmc->client) + if (client == kcs_bmc->client) { + u8 mask = KCS_BMC_EVENT_TYPE_IBF | KCS_BMC_EVENT_TYPE_OBE; + + kcs_bmc_update_event_mask(kcs_bmc, mask, 0); kcs_bmc->client = NULL; + } spin_unlock_irq(&kcs_bmc->lock); } EXPORT_SYMBOL(kcs_bmc_disable_device); diff --git a/drivers/char/ipmi/kcs_bmc_aspeed.c b/drivers/char/ipmi/kcs_bmc_aspeed.c index 5bf8d013e4ae..43994688dc8a 100644 --- a/drivers/char/ipmi/kcs_bmc_aspeed.c +++ b/drivers/char/ipmi/kcs_bmc_aspeed.c @@ -416,8 +416,7 @@ static int aspeed_kcs_probe(struct platform_device *pdev) platform_set_drvdata(pdev, priv); - aspeed_kcs_irq_mask_update(kcs_bmc, (KCS_BMC_EVENT_TYPE_IBF | KCS_BMC_EVENT_TYPE_OBE), - KCS_BMC_EVENT_TYPE_IBF); + aspeed_kcs_irq_mask_update(kcs_bmc, (KCS_BMC_EVENT_TYPE_IBF | KCS_BMC_EVENT_TYPE_OBE), 0); aspeed_kcs_enable_channel(kcs_bmc, true); rc = kcs_bmc_add_device(&priv->kcs_bmc); diff --git a/drivers/char/ipmi/kcs_bmc_npcm7xx.c b/drivers/char/ipmi/kcs_bmc_npcm7xx.c index ef81a715f88a..7961fec56476 100644 --- a/drivers/char/ipmi/kcs_bmc_npcm7xx.c +++ b/drivers/char/ipmi/kcs_bmc_npcm7xx.c @@ -202,8 +202,7 @@ static int npcm7xx_kcs_probe(struct platform_device *pdev) if (rc) return rc; - npcm7xx_kcs_irq_mask_update(kcs_bmc, (KCS_BMC_EVENT_TYPE_IBF | KCS_BMC_EVENT_TYPE_OBE), - KCS_BMC_EVENT_TYPE_IBF); + npcm7xx_kcs_irq_mask_update(kcs_bmc, (KCS_BMC_EVENT_TYPE_IBF | KCS_BMC_EVENT_TYPE_OBE), 0); npcm7xx_kcs_enable_channel(kcs_bmc, true); rc = kcs_bmc_add_device(kcs_bmc); |