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media: pci/ivtv: Replace request_mem_region with devm_ variant

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The managed device resource version of the function greatly
simplifies the error handling.

Signed-off-by: Ricardo Ribalda <ribalda@chromium.org>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
This commit is contained in:
Ricardo Ribalda
2024-05-27 22:14:46 +00:00
committed by Hans Verkuil
parent 7de8cf94b5
commit 1c11a4cf06
1 changed files with 14 additions and 31 deletions
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45
drivers/media/pci/ivtv/ivtv-driver.c
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@@ -814,24 +814,24 @@ static int ivtv_setup_pci(struct ivtv *itv, struct pci_dev *pdev,
IVTV_ERR("No suitable DMA available.\n");
return -EIO;
}
if (!request_mem_region(itv->base_addr, IVTV_ENCODER_SIZE, "ivtv encoder")) {
if (!devm_request_mem_region(&pdev->dev, itv->base_addr,
IVTV_ENCODER_SIZE, "ivtv encoder")) {
IVTV_ERR("Cannot request encoder memory region.\n");
return -EIO;
}
if (!request_mem_region(itv->base_addr + IVTV_REG_OFFSET,
IVTV_REG_SIZE, "ivtv registers")) {
if (!devm_request_mem_region(&pdev->dev,
itv->base_addr + IVTV_REG_OFFSET,
IVTV_REG_SIZE, "ivtv registers")) {
IVTV_ERR("Cannot request register memory region.\n");
release_mem_region(itv->base_addr, IVTV_ENCODER_SIZE);
return -EIO;
}
if (itv->has_cx23415 &&
!request_mem_region(itv->base_addr + IVTV_DECODER_OFFSET,
IVTV_DECODER_SIZE, "ivtv decoder")) {
!devm_request_mem_region(&pdev->dev,
itv->base_addr + IVTV_DECODER_OFFSET,
IVTV_DECODER_SIZE, "ivtv decoder")) {
IVTV_ERR("Cannot request decoder memory region.\n");
release_mem_region(itv->base_addr, IVTV_ENCODER_SIZE);
release_mem_region(itv->base_addr + IVTV_REG_OFFSET, IVTV_REG_SIZE);
return -EIO;
}
@@ -843,11 +843,6 @@ static int ivtv_setup_pci(struct ivtv *itv, struct pci_dev *pdev,
pci_read_config_word(pdev, PCI_COMMAND, &cmd);
if (!(cmd & PCI_COMMAND_MASTER)) {
IVTV_ERR("Bus Mastering is not enabled\n");
if (itv->has_cx23415)
release_mem_region(itv->base_addr + IVTV_DECODER_OFFSET,
IVTV_DECODER_SIZE);
release_mem_region(itv->base_addr, IVTV_ENCODER_SIZE);
release_mem_region(itv->base_addr + IVTV_REG_OFFSET, IVTV_REG_SIZE);
return -ENXIO;
}
}
@@ -1006,10 +1001,8 @@ static int ivtv_probe(struct pci_dev *pdev, const struct pci_device_id *pci_id)
/* PCI Device Setup */
retval = ivtv_setup_pci(itv, pdev, pci_id);
if (retval == -EIO)
if (retval == -EIO || retval == -ENXIO)
goto free_worker;
if (retval == -ENXIO)
goto free_mem;
/* map io memory */
IVTV_DEBUG_INFO("attempting ioremap at 0x%llx len 0x%08x\n",
@@ -1023,7 +1016,7 @@ static int ivtv_probe(struct pci_dev *pdev, const struct pci_device_id *pci_id)
IVTV_ERR("Check the output of 'grep Vmalloc /proc/meminfo'\n");
IVTV_ERR("Use the vmalloc= kernel command line option to set VmallocTotal to a larger value\n");
retval = -ENOMEM;
goto free_mem;
goto free_worker;
}
if (itv->has_cx23415) {
@@ -1038,7 +1031,7 @@ static int ivtv_probe(struct pci_dev *pdev, const struct pci_device_id *pci_id)
IVTV_ERR("Check the output of 'grep Vmalloc /proc/meminfo'\n");
IVTV_ERR("Use the vmalloc= kernel command line option to set VmallocTotal to a larger value\n");
retval = -ENOMEM;
goto free_mem;
goto free_worker;
}
}
else {
@@ -1057,18 +1050,18 @@ static int ivtv_probe(struct pci_dev *pdev, const struct pci_device_id *pci_id)
IVTV_ERR("Check the output of 'grep Vmalloc /proc/meminfo'\n");
IVTV_ERR("Use the vmalloc= kernel command line option to set VmallocTotal to a larger value\n");
retval = -ENOMEM;
goto free_mem;
goto free_worker;
}
retval = ivtv_gpio_init(itv);
if (retval)
goto free_mem;
goto free_worker;
/* active i2c */
IVTV_DEBUG_INFO("activating i2c...\n");
if (init_ivtv_i2c(itv)) {
IVTV_ERR("Could not initialize i2c\n");
goto free_mem;
goto free_worker;
}
if (itv->card->hw_all & IVTV_HW_TVEEPROM) {
@@ -1253,11 +1246,6 @@ static int ivtv_probe(struct pci_dev *pdev, const struct pci_device_id *pci_id)
free_i2c:
v4l2_ctrl_handler_free(&itv->cxhdl.hdl);
exit_ivtv_i2c(itv);
free_mem:
release_mem_region(itv->base_addr, IVTV_ENCODER_SIZE);
release_mem_region(itv->base_addr + IVTV_REG_OFFSET, IVTV_REG_SIZE);
if (itv->has_cx23415)
release_mem_region(itv->base_addr + IVTV_DECODER_OFFSET, IVTV_DECODER_SIZE);
free_worker:
kthread_stop(itv->irq_worker_task);
err:
@@ -1414,11 +1402,6 @@ static void ivtv_remove(struct pci_dev *pdev)
free_irq(itv->pdev->irq, (void *)itv);
release_mem_region(itv->base_addr, IVTV_ENCODER_SIZE);
release_mem_region(itv->base_addr + IVTV_REG_OFFSET, IVTV_REG_SIZE);
if (itv->has_cx23415)
release_mem_region(itv->base_addr + IVTV_DECODER_OFFSET, IVTV_DECODER_SIZE);
pci_disable_device(itv->pdev);
for (i = 0; i < IVTV_VBI_FRAMES; i++)
kfree(itv->vbi.sliced_mpeg_data[i]);