ALSA: Deletion of checks before the function call "iounmap"

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>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

20 files changed, 27 insertions, 64 deletions

diff --git a/sound/pci/ad1889.c b/sound/pci/ad1889.c
index 547ee30540a..0de31290411 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 72af66bdf71..67d11335697 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 9c1c4452a8e..d24188fea4b 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 b2f63e0727d..c321a97b434 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 e1cf01949fd..8d2fee7b33b 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 058b9973c09..e82ceacbe64 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 05a4337f811..ea339111c59 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 dfec84e1a57..128bbfe80aa 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 b425aa8ee57..b8b0d8ef931 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 253899d1379..4e16b4d05ee 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 21228adaa70..98d4f35cff2 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 d426a0bd6a5..a9714251b15 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 4cf4be5ef82..9ff60008497 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 1faf47e8157..c3a9f39f8d6 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 4e41a4e29a1..3f52a44143a 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 cf5a6c8b9a6..fe66bcb2147 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 3342705a571..8109b8e5f6e 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 6521521853b..648911c1a22 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 7f6a0a0d115..5e9437ba6ee 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 f5581a97d39..de7f06fb3f9 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);