[PATCH 11/13] ALSA: Deletion of checks before the function call "iounmap"

SF Markus Elfring
2015-01-04T13:36:26Z

From: Markus Elfring <elfring@users.sourceforge.net>
Date: Sat, 3 Jan 2015 22:55:54 +0100

The iounmap() function performs also input parameter validation.
Thus the test around the call is not needed.

This issue was detected by using the Coccinelle software.

Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
---
sound/aoa/soundbus/i2sbus/core.c | 13 ++++++-------
sound/arm/aaci.c | 4 ++--
sound/drivers/ml403-ac97cr.c | 3 +--
sound/isa/msnd/msnd_pinnacle.c | 3 +--
sound/parisc/harmony.c | 4 +---
sound/pci/ad1889.c | 5 +----
sound/pci/asihpi/hpioctl.c | 6 ++----
sound/pci/atiixp.c | 3 +--
sound/pci/atiixp_modem.c | 3 +--
sound/pci/aw2/aw2-alsa.c | 4 +---
sound/pci/bt87x.c | 3 +--
sound/pci/cs4281.c | 6 ++----
sound/pci/cs46xx/cs46xx_lib.c | 4 ++--
sound/pci/ctxfi/cthw20k1.c | 5 +----
sound/pci/ctxfi/cthw20k2.c | 5 +----
sound/pci/echoaudio/echoaudio.c | 6 +-----
sound/pci/hda/hda_intel.c | 3 +--
sound/pci/lola/lola.c | 6 ++----
sound/pci/mixart/mixart.c | 7 +++----
sound/pci/nm256/nm256.c | 6 ++----
sound/pci/rme9652/hdsp.c | 4 +---
sound/pci/rme9652/hdspm.c | 4 +---
sound/pci/rme9652/rme9652.c | 3 +--
sound/pci/sis7019.c | 5 +----
sound/pci/ymfpci/ymfpci_main.c | 3 +--
sound/ppc/pmac.c | 15 +++++----------
26 files changed, 43 insertions(+), 90 deletions(-)

diff --git a/sound/aoa/soundbus/i2sbus/core.c b/sound/aoa/soundbus/i2sbus/core.c
index 4e2b4fb..7835045 100644
--- a/sound/aoa/soundbus/i2sbus/core.c
+++ b/sound/aoa/soundbus/i2sbus/core.c
@@ -74,10 +74,9 @@ static void i2sbus_release_dev(struct device *dev)
int i;

i2sdev = container_of(dev, struct i2sbus_dev, sound.ofdev.dev);
-
- if (i2sdev->intfregs) iounmap(i2sdev->intfregs);
- if (i2sdev->out.dbdma) iounmap(i2sdev->out.dbdma);
- if (i2sdev->in.dbdma) iounmap(i2sdev->in.dbdma);
+ iounmap(i2sdev->intfregs);
+ iounmap(i2sdev->out.dbdma);
+ iounmap(i2sdev->in.dbdma);
for (i = aoa_resource_i2smmio; i <= aoa_resource_rxdbdma; i++)
release_and_free_resource(i2sdev->allocated_resource[i]);
free_dbdma_descriptor_ring(i2sdev, &i2sdev->out.dbdma_ring);
@@ -318,9 +317,9 @@ static int i2sbus_add_dev(struct macio_dev *macio,
free_irq(dev->interrupts[i], dev);
free_dbdma_descriptor_ring(dev, &dev->out.dbdma_ring);
free_dbdma_descriptor_ring(dev, &dev->in.dbdma_ring);
- if (dev->intfregs) iounmap(dev->intfregs);
- if (dev->out.dbdma) iounmap(dev->out.dbdma);
- if (dev->in.dbdma) iounmap(dev->in.dbdma);
+ iounmap(dev->intfregs);
+ iounmap(dev->out.dbdma);
+ iounmap(dev->in.dbdma);
for (i=0;i<3;i++)
release_and_free_resource(dev->allocated_resource[i]);
mutex_destroy(&dev->lock);
diff --git a/sound/arm/aaci.c b/sound/arm/aaci.c
index 0e83a73..4140b1b 100644
--- a/sound/arm/aaci.c
+++ b/sound/arm/aaci.c
@@ -889,8 +889,8 @@ static int aaci_probe_ac97(struct aaci *aaci)
static void aaci_free_card(struct snd_card *card)
{
struct aaci *aaci = card->private_data;
- if (aaci->base)
- iounmap(aaci->base);
+
+ iounmap(aaci->base);
}

static struct aaci *aaci_init_card(struct amba_device *dev)
diff --git a/sound/drivers/ml403-ac97cr.c b/sound/drivers/ml403-ac97cr.c
index ec01de1..bdcb572 100644
--- a/sound/drivers/ml403-ac97cr.c
+++ b/sound/drivers/ml403-ac97cr.c
@@ -1094,8 +1094,7 @@ static int snd_ml403_ac97cr_free(struct snd_ml403_ac97cr *ml403_ac97cr)
if (ml403_ac97cr->capture_irq >= 0)
free_irq(ml403_ac97cr->capture_irq, ml403_ac97cr);
/* give back "port" */
- if (ml403_ac97cr->port != NULL)
- iounmap(ml403_ac97cr->port);
+ iounmap(ml403_ac97cr->port);
kfree(ml403_ac97cr);
PDEBUG(INIT_INFO, "free(): (done)\n");
return 0;
diff --git a/sound/isa/msnd/msnd_pinnacle.c b/sound/isa/msnd/msnd_pinnacle.c
index 65b3682..4c07266 100644
--- a/sound/isa/msnd/msnd_pinnacle.c
+++ b/sound/isa/msnd/msnd_pinnacle.c
@@ -627,8 +627,7 @@ static int snd_msnd_attach(struct snd_card *card)
return 0;

err_release_region:
- if (chip->mappedbase)
- iounmap(chip->mappedbase);
+ iounmap(chip->mappedbase);
release_mem_region(chip->base, BUFFSIZE);
release_region(chip->io, DSP_NUMIO);
free_irq(chip->irq, chip);
diff --git a/sound/parisc/harmony.c b/sound/parisc/harmony.c
index 29604a2..f2350c1 100644
--- a/sound/parisc/harmony.c
+++ b/sound/parisc/harmony.c
@@ -893,9 +893,7 @@ snd_harmony_free(struct snd_harmony *h)
if (h->irq >= 0)
free_irq(h->irq, h);

- if (h->iobase)
- iounmap(h->iobase);
-
+ iounmap(h->iobase);
kfree(h);
return 0;
}
diff --git a/sound/pci/ad1889.c b/sound/pci/ad1889.c
index 547ee30..0de3129 100644
--- a/sound/pci/ad1889.c
+++ b/sound/pci/ad1889.c
@@ -853,12 +853,9 @@ snd_ad1889_free(struct snd_ad1889 *chip)
free_irq(chip->irq, chip);

skip_hw:
- if (chip->iobase)
- iounmap(chip->iobase);
-
+ iounmap(chip->iobase);
pci_release_regions(chip->pci);
pci_disable_device(chip->pci);
-
kfree(chip);
return 0;
}
diff --git a/sound/pci/asihpi/hpioctl.c b/sound/pci/asihpi/hpioctl.c
index 72af66b..67d1133 100644
--- a/sound/pci/asihpi/hpioctl.c
+++ b/sound/pci/asihpi/hpioctl.c
@@ -541,10 +541,8 @@ void asihpi_adapter_remove(struct pci_dev *pci_dev)
hpi_send_recv_ex(&hm, &hr, HOWNER_KERNEL);

/* unmap PCI memory space, mapped during device init. */
- for (idx = 0; idx < HPI_MAX_ADAPTER_MEM_SPACES; idx++) {
- if (pci.ap_mem_base[idx])
- iounmap(pci.ap_mem_base[idx]);
- }
+ for (idx = 0; idx < HPI_MAX_ADAPTER_MEM_SPACES; ++idx)
+ iounmap(pci.ap_mem_base[idx]);

if (pa->irq)
free_irq(pa->irq, pa);
diff --git a/sound/pci/atiixp.c b/sound/pci/atiixp.c
index 9c1c445..d24188f 100644
--- a/sound/pci/atiixp.c
+++ b/sound/pci/atiixp.c
@@ -1585,8 +1585,7 @@ static int snd_atiixp_free(struct atiixp *chip)
__hw_end:
if (chip->irq >= 0)
free_irq(chip->irq, chip);
- if (chip->remap_addr)
- iounmap(chip->remap_addr);
+ iounmap(chip->remap_addr);
pci_release_regions(chip->pci);
pci_disable_device(chip->pci);
kfree(chip);
diff --git a/sound/pci/atiixp_modem.c b/sound/pci/atiixp_modem.c
index b2f63e0..c321a97 100644
--- a/sound/pci/atiixp_modem.c
+++ b/sound/pci/atiixp_modem.c
@@ -1211,8 +1211,7 @@ static int snd_atiixp_free(struct atiixp_modem *chip)
__hw_end:
if (chip->irq >= 0)
free_irq(chip->irq, chip);
- if (chip->remap_addr)
- iounmap(chip->remap_addr);
+ iounmap(chip->remap_addr);
pci_release_regions(chip->pci);
pci_disable_device(chip->pci);
kfree(chip);
diff --git a/sound/pci/aw2/aw2-alsa.c b/sound/pci/aw2/aw2-alsa.c
index e1cf019..8d2fee7 100644
--- a/sound/pci/aw2/aw2-alsa.c
+++ b/sound/pci/aw2/aw2-alsa.c
@@ -229,9 +229,7 @@ static int snd_aw2_dev_free(struct snd_device *device)
if (chip->irq >= 0)
free_irq(chip->irq, (void *)chip);
/* release the i/o ports & memory */
- if (chip->iobase_virt)
- iounmap(chip->iobase_virt);
-
+ iounmap(chip->iobase_virt);
pci_release_regions(chip->pci);
/* disable the PCI entry */
pci_disable_device(chip->pci);
diff --git a/sound/pci/bt87x.c b/sound/pci/bt87x.c
index 058b997..e82ceac 100644
--- a/sound/pci/bt87x.c
+++ b/sound/pci/bt87x.c
@@ -690,8 +690,7 @@ static int snd_bt87x_free(struct snd_bt87x *chip)
snd_bt87x_stop(chip);
if (chip->irq >= 0)
free_irq(chip->irq, chip);
- if (chip->mmio)
- iounmap(chip->mmio);
+ iounmap(chip->mmio);
pci_release_regions(chip->pci);
pci_disable_device(chip->pci);
kfree(chip);
diff --git a/sound/pci/cs4281.c b/sound/pci/cs4281.c
index 05a4337..ea33911 100644
--- a/sound/pci/cs4281.c
+++ b/sound/pci/cs4281.c
@@ -1316,10 +1316,8 @@ static int snd_cs4281_free(struct cs4281 *chip)

if (chip->irq >= 0)
free_irq(chip->irq, chip);
- if (chip->ba0)
- iounmap(chip->ba0);
- if (chip->ba1)
- iounmap(chip->ba1);
+ iounmap(chip->ba0);
+ iounmap(chip->ba1);
pci_release_regions(chip->pci);
pci_disable_device(chip->pci);

diff --git a/sound/pci/cs46xx/cs46xx_lib.c b/sound/pci/cs46xx/cs46xx_lib.c
index dfec84e..128bbfe 100644
--- a/sound/pci/cs46xx/cs46xx_lib.c
+++ b/sound/pci/cs46xx/cs46xx_lib.c
@@ -2949,8 +2949,8 @@ static int snd_cs46xx_free(struct snd_cs46xx *chip)

for (idx = 0; idx < 5; idx++) {
struct snd_cs46xx_region *region = &chip->region.idx[idx];
- if (region->remap_addr)
- iounmap(region->remap_addr);
+
+ iounmap(region->remap_addr);
release_and_free_resource(region->resource);
}

diff --git a/sound/pci/ctxfi/cthw20k1.c b/sound/pci/ctxfi/cthw20k1.c
index b425aa8..b8b0d8e 100644
--- a/sound/pci/ctxfi/cthw20k1.c
+++ b/sound/pci/ctxfi/cthw20k1.c
@@ -1985,10 +1985,7 @@ static int hw_card_shutdown(struct hw *hw)
free_irq(hw->irq, hw);

hw->irq = -1;
-
- if (hw->mem_base)
- iounmap(hw->mem_base);
-
+ iounmap(hw->mem_base);
hw->mem_base = NULL;

if (hw->io_base)
diff --git a/sound/pci/ctxfi/cthw20k2.c b/sound/pci/ctxfi/cthw20k2.c
index 253899d..4e16b4d 100644
--- a/sound/pci/ctxfi/cthw20k2.c
+++ b/sound/pci/ctxfi/cthw20k2.c
@@ -2110,10 +2110,7 @@ static int hw_card_shutdown(struct hw *hw)
free_irq(hw->irq, hw);

hw->irq = -1;
-
- if (hw->mem_base)
- iounmap(hw->mem_base);
-
+ iounmap(hw->mem_base);
hw->mem_base = NULL;

if (hw->io_base)
diff --git a/sound/pci/echoaudio/echoaudio.c b/sound/pci/echoaudio/echoaudio.c
index 21228ad..98d4f35 100644
--- a/sound/pci/echoaudio/echoaudio.c
+++ b/sound/pci/echoaudio/echoaudio.c
@@ -1872,12 +1872,8 @@ static int snd_echo_free(struct echoaudio *chip)
if (chip->comm_page)
snd_dma_free_pages(&chip->commpage_dma_buf);

- if (chip->dsp_registers)
- iounmap(chip->dsp_registers);
-
+ iounmap(chip->dsp_registers);
release_and_free_resource(chip->iores);
-
-
pci_disable_device(chip->pci);

/* release chip data */
diff --git a/sound/pci/hda/hda_intel.c b/sound/pci/hda/hda_intel.c
index d426a0b..a971425 100644
--- a/sound/pci/hda/hda_intel.c
+++ b/sound/pci/hda/hda_intel.c
@@ -1138,8 +1138,7 @@ static int azx_free(struct azx *chip)
free_irq(chip->irq, (void*)chip);
if (chip->msi)
pci_disable_msi(chip->pci);
- if (chip->remap_addr)
- iounmap(chip->remap_addr);
+ iounmap(chip->remap_addr);

azx_free_stream_pages(chip);
if (chip->region_requested)
diff --git a/sound/pci/lola/lola.c b/sound/pci/lola/lola.c
index 4cf4be5..9ff60008 100644
--- a/sound/pci/lola/lola.c
+++ b/sound/pci/lola/lola.c
@@ -551,10 +551,8 @@ static void lola_free(struct lola *chip)
lola_free_mixer(chip);
if (chip->irq >= 0)
free_irq(chip->irq, (void *)chip);
- if (chip->bar[0].remap_addr)
- iounmap(chip->bar[0].remap_addr);
- if (chip->bar[1].remap_addr)
- iounmap(chip->bar[1].remap_addr);
+ iounmap(chip->bar[0].remap_addr);
+ iounmap(chip->bar[1].remap_addr);
if (chip->rb.area)
snd_dma_free_pages(&chip->rb);
pci_release_regions(chip->pci);
diff --git a/sound/pci/mixart/mixart.c b/sound/pci/mixart/mixart.c
index 1faf47e..c3a9f39 100644
--- a/sound/pci/mixart/mixart.c
+++ b/sound/pci/mixart/mixart.c
@@ -1114,10 +1114,9 @@ static int snd_mixart_free(struct mixart_mgr *mgr)
}

/* release the i/o ports */
- for (i = 0; i < 2; i++) {
- if (mgr->mem[i].virt)
- iounmap(mgr->mem[i].virt);
- }
+ for (i = 0; i < 2; ++i)
+ iounmap(mgr->mem[i].virt);
+
pci_release_regions(mgr->pci);

/* free flowarray */
diff --git a/sound/pci/nm256/nm256.c b/sound/pci/nm256/nm256.c
index 4e41a4e..3f52a44 100644
--- a/sound/pci/nm256/nm256.c
+++ b/sound/pci/nm256/nm256.c
@@ -1460,10 +1460,8 @@ static int snd_nm256_free(struct nm256 *chip)
if (chip->irq >= 0)
free_irq(chip->irq, chip);

- if (chip->cport)
- iounmap(chip->cport);
- if (chip->buffer)
- iounmap(chip->buffer);
+ iounmap(chip->cport);
+ iounmap(chip->buffer);
release_and_free_resource(chip->res_cport);
release_and_free_resource(chip->res_buffer);

diff --git a/sound/pci/rme9652/hdsp.c b/sound/pci/rme9652/hdsp.c
index cf5a6c8..fe66bcb 100644
--- a/sound/pci/rme9652/hdsp.c
+++ b/sound/pci/rme9652/hdsp.c
@@ -5309,9 +5309,7 @@ static int snd_hdsp_free(struct hdsp *hdsp)

release_firmware(hdsp->firmware);
vfree(hdsp->fw_uploaded);
-
- if (hdsp->iobase)
- iounmap(hdsp->iobase);
+ iounmap(hdsp->iobase);

if (hdsp->port)
pci_release_regions(hdsp->pci);
diff --git a/sound/pci/rme9652/hdspm.c b/sound/pci/rme9652/hdspm.c
index 3342705..8109b8e 100644
--- a/sound/pci/rme9652/hdspm.c
+++ b/sound/pci/rme9652/hdspm.c
@@ -6965,9 +6965,7 @@ static int snd_hdspm_free(struct hdspm * hdspm)
free_irq(hdspm->irq, (void *) hdspm);

kfree(hdspm->mixer);
-
- if (hdspm->iobase)
- iounmap(hdspm->iobase);
+ iounmap(hdspm->iobase);

if (hdspm->port)
pci_release_regions(hdspm->pci);
diff --git a/sound/pci/rme9652/rme9652.c b/sound/pci/rme9652/rme9652.c
index 6521521..648911c 100644
--- a/sound/pci/rme9652/rme9652.c
+++ b/sound/pci/rme9652/rme9652.c
@@ -1756,8 +1756,7 @@ static int snd_rme9652_free(struct snd_rme9652 *rme9652)

if (rme9652->irq >= 0)
free_irq(rme9652->irq, (void *)rme9652);
- if (rme9652->iobase)
- iounmap(rme9652->iobase);
+ iounmap(rme9652->iobase);
if (rme9652->port)
pci_release_regions(rme9652->pci);

diff --git a/sound/pci/sis7019.c b/sound/pci/sis7019.c
index 7f6a0a0..5e9437b 100644
--- a/sound/pci/sis7019.c
+++ b/sound/pci/sis7019.c
@@ -1064,12 +1064,9 @@ static int sis_chip_free(struct sis7019 *sis)
if (sis->irq >= 0)
free_irq(sis->irq, sis);

- if (sis->ioaddr)
- iounmap(sis->ioaddr);
-
+ iounmap(sis->ioaddr);
pci_release_regions(sis->pci);
pci_disable_device(sis->pci);
-
sis_free_suspend(sis);
return 0;
}
diff --git a/sound/pci/ymfpci/ymfpci_main.c b/sound/pci/ymfpci/ymfpci_main.c
index f5581a9..de7f06f 100644
--- a/sound/pci/ymfpci/ymfpci_main.c
+++ b/sound/pci/ymfpci/ymfpci_main.c
@@ -2246,8 +2246,7 @@ static int snd_ymfpci_free(struct snd_ymfpci *chip)
release_and_free_resource(chip->mpu_res);
release_and_free_resource(chip->fm_res);
snd_ymfpci_free_gameport(chip);
- if (chip->reg_area_virt)
- iounmap(chip->reg_area_virt);
+ iounmap(chip->reg_area_virt);
if (chip->work_ptr.area)
snd_dma_free_pages(&chip->work_ptr);

diff --git a/sound/ppc/pmac.c b/sound/ppc/pmac.c
index 5a13b22..d399df4 100644
--- a/sound/ppc/pmac.c
+++ b/sound/ppc/pmac.c
@@ -867,16 +867,11 @@ static int snd_pmac_free(struct snd_pmac *chip)
snd_pmac_dbdma_free(chip, &chip->capture.cmd);
snd_pmac_dbdma_free(chip, &chip->extra_dma);
snd_pmac_dbdma_free(chip, &emergency_dbdma);
- if (chip->macio_base)
- iounmap(chip->macio_base);
- if (chip->latch_base)
- iounmap(chip->latch_base);
- if (chip->awacs)
- iounmap(chip->awacs);
- if (chip->playback.dma)
- iounmap(chip->playback.dma);
- if (chip->capture.dma)
- iounmap(chip->capture.dma);
+ iounmap(chip->macio_base);
+ iounmap(chip->latch_base);
+ iounmap(chip->awacs);
+ iounmap(chip->playback.dma);
+ iounmap(chip->capture.dma);

if (chip->node) {
int i;
--
2.2.1