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Date: Sat, 25 Aug 2012 16:20:16 +0100
From: Luis Henriques <luis.henriques@...onical.com>
To: linux-kernel@...r.kernel.org
Cc: Jarod Wilson <jarod@...hat.com>,
Mauro Carvalho Chehab <mchehab@...hat.com>,
Matthijs Kooijman <matthijs@...in.nl>,
Elmar Stellnberger <estellnb@...tel.org>,
Alan Cox <alan@...rguk.ukuu.org.uk>
Subject: [PATCH 1/1] [media] rc: Fix ISR registration
Commit 9ef449c6b31bb6a8e6dedc24de475a3b8c79be20 ("[media] rc: Postpone ISR
registration") tried to fix an early ISR registration, but it didn't moved
it far enough -- request_irq() has to be called only *after* device
registration.
This patch should fix bug https://bugzilla.kernel.org/show_bug.cgi?id=46391.
Cc: <stable@...r.kernel.org>
Signed-off-by: Luis Henriques <luis.henriques@...onical.com>
---
drivers/media/rc/ene_ir.c | 34 ++++++++++++++++++----------------
drivers/media/rc/fintek-cir.c | 11 ++++++-----
drivers/media/rc/ite-cir.c | 11 ++++++-----
drivers/media/rc/nuvoton-cir.c | 21 +++++++++++----------
drivers/media/rc/winbond-cir.c | 14 +++++++-------
5 files changed, 48 insertions(+), 43 deletions(-)
diff --git a/drivers/media/rc/ene_ir.c b/drivers/media/rc/ene_ir.c
index 647dd95..3ff3bb6 100644
--- a/drivers/media/rc/ene_ir.c
+++ b/drivers/media/rc/ene_ir.c
@@ -1000,7 +1000,7 @@ static int ene_probe(struct pnp_dev *pnp_dev, const struct pnp_device_id *id)
dev = kzalloc(sizeof(struct ene_device), GFP_KERNEL);
rdev = rc_allocate_device();
if (!dev || !rdev)
- goto error1;
+ goto failure;
/* validate resources */
error = -ENODEV;
@@ -1011,10 +1011,10 @@ static int ene_probe(struct pnp_dev *pnp_dev, const struct pnp_device_id *id)
if (!pnp_port_valid(pnp_dev, 0) ||
pnp_port_len(pnp_dev, 0) < ENE_IO_SIZE)
- goto error;
+ goto failure;
if (!pnp_irq_valid(pnp_dev, 0))
- goto error;
+ goto failure;
spin_lock_init(&dev->hw_lock);
@@ -1030,7 +1030,7 @@ static int ene_probe(struct pnp_dev *pnp_dev, const struct pnp_device_id *id)
/* detect hardware version and features */
error = ene_hw_detect(dev);
if (error)
- goto error;
+ goto failure;
if (!dev->hw_learning_and_tx_capable && txsim) {
dev->hw_learning_and_tx_capable = true;
@@ -1077,30 +1077,32 @@ static int ene_probe(struct pnp_dev *pnp_dev, const struct pnp_device_id *id)
if (!request_region(dev->hw_io, ENE_IO_SIZE, ENE_DRIVER_NAME)) {
dev->hw_io = -1;
dev->irq = -1;
- goto error;
+ goto failure;
}
+ error = rc_register_device(rdev);
+ if (error)
+ goto failure2;
+
+ error = -EBUSY;
dev->irq = pnp_irq(pnp_dev, 0);
if (request_irq(dev->irq, ene_isr,
IRQF_SHARED, ENE_DRIVER_NAME, (void *)dev)) {
dev->irq = -1;
- goto error;
+ goto failure3;
}
- error = rc_register_device(rdev);
- if (error < 0)
- goto error;
-
pr_notice("driver has been successfully loaded\n");
return 0;
-error:
- if (dev && dev->irq >= 0)
- free_irq(dev->irq, dev);
- if (dev && dev->hw_io >= 0)
- release_region(dev->hw_io, ENE_IO_SIZE);
-error1:
+
+failure3:
+ rc_unregister_device(rdev);
+failure2:
+ release_region(dev->hw_io, ENE_IO_SIZE);
+failure:
rc_free_device(rdev);
kfree(dev);
+
return error;
}
diff --git a/drivers/media/rc/fintek-cir.c b/drivers/media/rc/fintek-cir.c
index ab30c64..df8631e 100644
--- a/drivers/media/rc/fintek-cir.c
+++ b/drivers/media/rc/fintek-cir.c
@@ -558,12 +558,13 @@ static int fintek_probe(struct pnp_dev *pdev, const struct pnp_device_id *dev_id
fintek->cir_port_len, FINTEK_DRIVER_NAME))
goto failure;
- if (request_irq(fintek->cir_irq, fintek_cir_isr, IRQF_SHARED,
- FINTEK_DRIVER_NAME, (void *)fintek))
- goto failure2;
-
ret = rc_register_device(rdev);
if (ret)
+ goto failure2;
+
+ ret = -EBUSY;
+ if (request_irq(fintek->cir_irq, fintek_cir_isr, IRQF_SHARED,
+ FINTEK_DRIVER_NAME, (void *)fintek))
goto failure3;
device_init_wakeup(&pdev->dev, true);
@@ -575,7 +576,7 @@ static int fintek_probe(struct pnp_dev *pdev, const struct pnp_device_id *dev_id
return 0;
failure3:
- free_irq(fintek->cir_irq, fintek);
+ rc_unregister_device(rdev);
failure2:
release_region(fintek->cir_addr, fintek->cir_port_len);
failure:
diff --git a/drivers/media/rc/ite-cir.c b/drivers/media/rc/ite-cir.c
index 36fe5a3..530cc0b 100644
--- a/drivers/media/rc/ite-cir.c
+++ b/drivers/media/rc/ite-cir.c
@@ -1596,12 +1596,13 @@ static int ite_probe(struct pnp_dev *pdev, const struct pnp_device_id
dev_desc->io_region_size, ITE_DRIVER_NAME))
goto failure;
- if (request_irq(itdev->cir_irq, ite_cir_isr, IRQF_SHARED,
- ITE_DRIVER_NAME, (void *)itdev))
- goto failure2;
-
ret = rc_register_device(rdev);
if (ret)
+ goto failure2;
+
+ ret = -EBUSY;
+ if (request_irq(itdev->cir_irq, ite_cir_isr, IRQF_SHARED,
+ ITE_DRIVER_NAME, (void *)itdev))
goto failure3;
itdev->rdev = rdev;
@@ -1610,7 +1611,7 @@ static int ite_probe(struct pnp_dev *pdev, const struct pnp_device_id
return 0;
failure3:
- free_irq(itdev->cir_irq, itdev);
+ rc_unregister_device(rdev);
failure2:
release_region(itdev->cir_addr, itdev->params.io_region_size);
failure:
diff --git a/drivers/media/rc/nuvoton-cir.c b/drivers/media/rc/nuvoton-cir.c
index 699eef3..a0e3cc7 100644
--- a/drivers/media/rc/nuvoton-cir.c
+++ b/drivers/media/rc/nuvoton-cir.c
@@ -1072,20 +1072,21 @@ static int nvt_probe(struct pnp_dev *pdev, const struct pnp_device_id *dev_id)
CIR_IOREG_LENGTH, NVT_DRIVER_NAME))
goto failure;
- if (request_irq(nvt->cir_irq, nvt_cir_isr, IRQF_SHARED,
- NVT_DRIVER_NAME, (void *)nvt))
- goto failure2;
-
if (!request_region(nvt->cir_wake_addr,
CIR_IOREG_LENGTH, NVT_DRIVER_NAME))
+ goto failure2;
+
+ ret = rc_register_device(rdev);
+ if (ret)
goto failure3;
- if (request_irq(nvt->cir_wake_irq, nvt_cir_wake_isr, IRQF_SHARED,
+ ret = -EBUSY;
+ if (request_irq(nvt->cir_irq, nvt_cir_isr, IRQF_SHARED,
NVT_DRIVER_NAME, (void *)nvt))
goto failure4;
- ret = rc_register_device(rdev);
- if (ret)
+ if (request_irq(nvt->cir_wake_irq, nvt_cir_wake_isr, IRQF_SHARED,
+ NVT_DRIVER_NAME, (void *)nvt))
goto failure5;
device_init_wakeup(&pdev->dev, true);
@@ -1099,11 +1100,11 @@ static int nvt_probe(struct pnp_dev *pdev, const struct pnp_device_id *dev_id)
return 0;
failure5:
- free_irq(nvt->cir_wake_irq, nvt);
+ free_irq(nvt->cir_irq, nvt);
failure4:
- release_region(nvt->cir_wake_addr, CIR_IOREG_LENGTH);
+ rc_unregister_device(rdev);
failure3:
- free_irq(nvt->cir_irq, nvt);
+ release_region(nvt->cir_wake_addr, CIR_IOREG_LENGTH);
failure2:
release_region(nvt->cir_addr, CIR_IOREG_LENGTH);
failure:
diff --git a/drivers/media/rc/winbond-cir.c b/drivers/media/rc/winbond-cir.c
index 54ee348..a42ee93 100644
--- a/drivers/media/rc/winbond-cir.c
+++ b/drivers/media/rc/winbond-cir.c
@@ -1056,26 +1056,26 @@ wbcir_probe(struct pnp_dev *device, const struct pnp_device_id *dev_id)
goto exit_release_ebase;
}
+ err = rc_register_device(data->dev);
+ if (err)
+ goto exit_release_sbase;
+
err = request_irq(data->irq, wbcir_irq_handler,
IRQF_DISABLED, DRVNAME, device);
if (err) {
dev_err(dev, "Failed to claim IRQ %u\n", data->irq);
err = -EBUSY;
- goto exit_release_sbase;
+ goto exit_unregister_dev;
}
- err = rc_register_device(data->dev);
- if (err)
- goto exit_free_irq;
-
device_init_wakeup(&device->dev, 1);
wbcir_init_hw(data);
return 0;
-exit_free_irq:
- free_irq(data->irq, device);
+exit_unregister_dev:
+ rc_unregister_device(data->dev);
exit_release_sbase:
release_region(data->sbase, SP_IOMEM_LEN);
exit_release_ebase:
--
1.7.10.4
--
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