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media: pci/ivtv: Replace ioremap with devm_ variants

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With Managed Device Resources the error handling is simpler.

The following smatch warning is silenced:
drivers/media/pci/ivtv/ivtv-driver.c: drivers/media/pci/ivtv/ivtv-driver.c:1296 ivtv_probe() warn: 'itv->dec_mem' from ioremap() not released on lines: 1296.
drivers/media/pci/ivtv/ivtv-driver.c: drivers/media/pci/ivtv/ivtv-driver.c:1296 ivtv_probe() warn: 'itv->enc_mem' from ioremap() not released on lines: 1296.

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 22:14:45 +00:00
committed by Hans Verkuil
parent 364ae46413
commit 7de8cf94b5
1 changed files with 12 additions and 39 deletions
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51
drivers/media/pci/ivtv/ivtv-driver.c
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@@ -371,33 +371,6 @@ int ivtv_msleep_timeout(unsigned int msecs, int intr)
return 0;
}
/* Release ioremapped memory */
static void ivtv_iounmap(struct ivtv *itv)
{
if (itv == NULL)
return;
/* Release registers memory */
if (itv->reg_mem != NULL) {
IVTV_DEBUG_INFO("releasing reg_mem\n");
iounmap(itv->reg_mem);
itv->reg_mem = NULL;
}
/* Release io memory */
if (itv->has_cx23415 && itv->dec_mem != NULL) {
IVTV_DEBUG_INFO("releasing dec_mem\n");
iounmap(itv->dec_mem);
}
itv->dec_mem = NULL;
/* Release io memory */
if (itv->enc_mem != NULL) {
IVTV_DEBUG_INFO("releasing enc_mem\n");
iounmap(itv->enc_mem);
itv->enc_mem = NULL;
}
}
/* Hauppauge card? get values from tveeprom */
void ivtv_read_eeprom(struct ivtv *itv, struct tveeprom *tv)
{
@@ -1041,8 +1014,9 @@ static int ivtv_probe(struct pci_dev *pdev, const struct pci_device_id *pci_id)
/* map io memory */
IVTV_DEBUG_INFO("attempting ioremap at 0x%llx len 0x%08x\n",
(u64)itv->base_addr + IVTV_ENCODER_OFFSET, IVTV_ENCODER_SIZE);
itv->enc_mem = ioremap(itv->base_addr + IVTV_ENCODER_OFFSET,
IVTV_ENCODER_SIZE);
itv->enc_mem = devm_ioremap(&pdev->dev,
itv->base_addr + IVTV_ENCODER_OFFSET,
IVTV_ENCODER_SIZE);
if (!itv->enc_mem) {
IVTV_ERR("ioremap failed. Can't get a window into CX23415/6 encoder memory\n");
IVTV_ERR("Each capture card with a CX23415/6 needs 8 MB of vmalloc address space for this window\n");
@@ -1055,8 +1029,9 @@ static int ivtv_probe(struct pci_dev *pdev, const struct pci_device_id *pci_id)
if (itv->has_cx23415) {
IVTV_DEBUG_INFO("attempting ioremap at 0x%llx len 0x%08x\n",
(u64)itv->base_addr + IVTV_DECODER_OFFSET, IVTV_DECODER_SIZE);
itv->dec_mem = ioremap(itv->base_addr + IVTV_DECODER_OFFSET,
IVTV_DECODER_SIZE);
itv->dec_mem = devm_ioremap(&pdev->dev,
itv->base_addr + IVTV_DECODER_OFFSET,
IVTV_DECODER_SIZE);
if (!itv->dec_mem) {
IVTV_ERR("ioremap failed. Can't get a window into CX23415 decoder memory\n");
IVTV_ERR("Each capture card with a CX23415 needs 8 MB of vmalloc address space for this window\n");
@@ -1073,26 +1048,27 @@ static int ivtv_probe(struct pci_dev *pdev, const struct pci_device_id *pci_id)
/* map registers memory */
IVTV_DEBUG_INFO("attempting ioremap at 0x%llx len 0x%08x\n",
(u64)itv->base_addr + IVTV_REG_OFFSET, IVTV_REG_SIZE);
itv->reg_mem =
ioremap(itv->base_addr + IVTV_REG_OFFSET, IVTV_REG_SIZE);
itv->reg_mem = devm_ioremap(&pdev->dev,
itv->base_addr + IVTV_REG_OFFSET,
IVTV_REG_SIZE);
if (!itv->reg_mem) {
IVTV_ERR("ioremap failed. Can't get a window into CX23415/6 register space\n");
IVTV_ERR("Each capture card with a CX23415/6 needs 64 kB of vmalloc address space for this window\n");
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_io;
goto free_mem;
}
retval = ivtv_gpio_init(itv);
if (retval)
goto free_io;
goto free_mem;
/* active i2c */
IVTV_DEBUG_INFO("activating i2c...\n");
if (init_ivtv_i2c(itv)) {
IVTV_ERR("Could not initialize i2c\n");
goto free_io;
goto free_mem;
}
if (itv->card->hw_all & IVTV_HW_TVEEPROM) {
@@ -1277,8 +1253,6 @@ 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_io:
ivtv_iounmap(itv);
free_mem:
release_mem_region(itv->base_addr, IVTV_ENCODER_SIZE);
release_mem_region(itv->base_addr + IVTV_REG_OFFSET, IVTV_REG_SIZE);
@@ -1439,7 +1413,6 @@ static void ivtv_remove(struct pci_dev *pdev)
exit_ivtv_i2c(itv);
free_irq(itv->pdev->irq, (void *)itv);
ivtv_iounmap(itv);
release_mem_region(itv->base_addr, IVTV_ENCODER_SIZE);
release_mem_region(itv->base_addr + IVTV_REG_OFFSET, IVTV_REG_SIZE);