[PATCH] treewide: remove redundent IS_ERR() before error code check

Masahiro Yamada
2020-01-06T05:11:41Z

'PTR_ERR(p) == -E*' is a stronger condition than IS_ERR(p).
Hence, IS_ERR(p) is unneeded.

The semantic patch that generates this commit is as follows:

// <smpl>
@@
expression ptr;
constant error_code;
@@
-IS_ERR(ptr) && (PTR_ERR(ptr) == - error_code)
+PTR_ERR(ptr) == - error_code
// </smpl>

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
---

crypto/af_alg.c | 2 +-
drivers/acpi/scan.c | 2 +-
drivers/char/hw_random/bcm2835-rng.c | 2 +-
drivers/char/hw_random/omap-rng.c | 4 ++--
drivers/clk/clk.c | 2 +-
drivers/dma/mv_xor_v2.c | 2 +-
drivers/gpio/gpiolib-devres.c | 2 +-
drivers/gpio/gpiolib-of.c | 8 ++++----
drivers/gpio/gpiolib.c | 2 +-
drivers/i2c/busses/i2c-mv64xxx.c | 5 ++---
drivers/i2c/busses/i2c-synquacer.c | 2 +-
drivers/mtd/ubi/build.c | 2 +-
drivers/of/device.c | 2 +-
drivers/pci/controller/pci-tegra.c | 2 +-
drivers/phy/phy-core.c | 4 ++--
drivers/spi/spi-orion.c | 3 +--
drivers/video/fbdev/imxfb.c | 2 +-
fs/ext4/super.c | 2 +-
fs/f2fs/node.c | 2 +-
fs/ocfs2/suballoc.c | 2 +-
fs/sysfs/group.c | 2 +-
net/core/dev.c | 2 +-
net/core/filter.c | 2 +-
net/xfrm/xfrm_policy.c | 2 +-
sound/soc/codecs/ak4104.c | 3 +--
sound/soc/codecs/cs4270.c | 3 +--
sound/soc/codecs/tlv320aic32x4.c | 6 ++----
sound/soc/sunxi/sun4i-spdif.c | 2 +-
28 files changed, 35 insertions(+), 41 deletions(-)

diff --git a/crypto/af_alg.c b/crypto/af_alg.c
index 0dceaabc6321..0cc82bec0657 100644
--- a/crypto/af_alg.c
+++ b/crypto/af_alg.c
@@ -169,7 +169,7 @@ static int alg_bind(struct socket *sock, struct sockaddr *uaddr, int addr_len)
sa->salg_name[sizeof(sa->salg_name) + addr_len - sizeof(*sa) - 1] = 0;

type = alg_get_type(sa->salg_type);
- if (IS_ERR(type) && PTR_ERR(type) == -ENOENT) {
+ if (PTR_ERR(type) == -ENOENT) {
request_module("algif-%s", sa->salg_type);
type = alg_get_type(sa->salg_type);
}
diff --git a/drivers/acpi/scan.c b/drivers/acpi/scan.c
index 915650bf519f..6d3448895382 100644
--- a/drivers/acpi/scan.c
+++ b/drivers/acpi/scan.c
@@ -1462,7 +1462,7 @@ int acpi_dma_configure(struct device *dev, enum dev_dma_attr attr)
iort_dma_setup(dev, &dma_addr, &size);

iommu = iort_iommu_configure(dev);
- if (IS_ERR(iommu) && PTR_ERR(iommu) == -EPROBE_DEFER)
+ if (PTR_ERR(iommu) == -EPROBE_DEFER)
return -EPROBE_DEFER;

arch_setup_dma_ops(dev, dma_addr, size,
diff --git a/drivers/char/hw_random/bcm2835-rng.c b/drivers/char/hw_random/bcm2835-rng.c
index d2a5791eb49f..cbf5eaea662c 100644
--- a/drivers/char/hw_random/bcm2835-rng.c
+++ b/drivers/char/hw_random/bcm2835-rng.c
@@ -157,7 +157,7 @@ static int bcm2835_rng_probe(struct platform_device *pdev)

/* Clock is optional on most platforms */
priv->clk = devm_clk_get(dev, NULL);
- if (IS_ERR(priv->clk) && PTR_ERR(priv->clk) == -EPROBE_DEFER)
+ if (PTR_ERR(priv->clk) == -EPROBE_DEFER)
return -EPROBE_DEFER;

priv->rng.name = pdev->name;
diff --git a/drivers/char/hw_random/omap-rng.c b/drivers/char/hw_random/omap-rng.c
index 0ed07d16ec8e..65952393e1bb 100644
--- a/drivers/char/hw_random/omap-rng.c
+++ b/drivers/char/hw_random/omap-rng.c
@@ -476,7 +476,7 @@ static int omap_rng_probe(struct platform_device *pdev)
}

priv->clk = devm_clk_get(&pdev->dev, NULL);
- if (IS_ERR(priv->clk) && PTR_ERR(priv->clk) == -EPROBE_DEFER)
+ if (PTR_ERR(priv->clk) == -EPROBE_DEFER)
return -EPROBE_DEFER;
if (!IS_ERR(priv->clk)) {
ret = clk_prepare_enable(priv->clk);
@@ -488,7 +488,7 @@ static int omap_rng_probe(struct platform_device *pdev)
}

priv->clk_reg = devm_clk_get(&pdev->dev, "reg");
- if (IS_ERR(priv->clk_reg) && PTR_ERR(priv->clk_reg) == -EPROBE_DEFER)
+ if (PTR_ERR(priv->clk_reg) == -EPROBE_DEFER)
return -EPROBE_DEFER;
if (!IS_ERR(priv->clk_reg)) {
ret = clk_prepare_enable(priv->clk_reg);
diff --git a/drivers/clk/clk.c b/drivers/clk/clk.c
index 6a11239ccde3..3c27699487c1 100644
--- a/drivers/clk/clk.c
+++ b/drivers/clk/clk.c
@@ -429,7 +429,7 @@ static void clk_core_fill_parent_index(struct clk_core *core, u8 index)
parent = ERR_PTR(-EPROBE_DEFER);
} else {
parent = clk_core_get(core, index);
- if (IS_ERR(parent) && PTR_ERR(parent) == -ENOENT && entry->name)
+ if (PTR_ERR(parent) == -ENOENT && entry->name)
parent = clk_core_lookup(entry->name);
}

diff --git a/drivers/dma/mv_xor_v2.c b/drivers/dma/mv_xor_v2.c
index e3850f04f676..157c959311ea 100644
--- a/drivers/dma/mv_xor_v2.c
+++ b/drivers/dma/mv_xor_v2.c
@@ -750,7 +750,7 @@ static int mv_xor_v2_probe(struct platform_device *pdev)
}

xor_dev->clk = devm_clk_get(&pdev->dev, NULL);
- if (IS_ERR(xor_dev->clk) && PTR_ERR(xor_dev->clk) == -EPROBE_DEFER) {
+ if (PTR_ERR(xor_dev->clk) == -EPROBE_DEFER) {
ret = EPROBE_DEFER;
goto disable_reg_clk;
}
diff --git a/drivers/gpio/gpiolib-devres.c b/drivers/gpio/gpiolib-devres.c
index 4421be09b960..72b6001c56ef 100644
--- a/drivers/gpio/gpiolib-devres.c
+++ b/drivers/gpio/gpiolib-devres.c
@@ -308,7 +308,7 @@ devm_gpiod_get_array_optional(struct device *dev, const char *con_id,
struct gpio_descs *descs;

descs = devm_gpiod_get_array(dev, con_id, flags);
- if (IS_ERR(descs) && (PTR_ERR(descs) == -ENOENT))
+ if (PTR_ERR(descs) == -ENOENT)
return NULL;

return descs;
diff --git a/drivers/gpio/gpiolib-of.c b/drivers/gpio/gpiolib-of.c
index b696e4598a24..3d3659cd72ef 100644
--- a/drivers/gpio/gpiolib-of.c
+++ b/drivers/gpio/gpiolib-of.c
@@ -505,24 +505,24 @@ struct gpio_desc *of_find_gpio(struct device *dev, const char *con_id,
break;
}

- if (IS_ERR(desc) && PTR_ERR(desc) == -ENOENT) {
+ if (PTR_ERR(desc) == -ENOENT) {
/* Special handling for SPI GPIOs if used */
desc = of_find_spi_gpio(dev, con_id, &of_flags);
}

- if (IS_ERR(desc) && PTR_ERR(desc) == -ENOENT) {
+ if (PTR_ERR(desc) == -ENOENT) {
/* This quirk looks up flags and all */
desc = of_find_spi_cs_gpio(dev, con_id, idx, flags);
if (!IS_ERR(desc))
return desc;
}

- if (IS_ERR(desc) && PTR_ERR(desc) == -ENOENT) {
+ if (PTR_ERR(desc) == -ENOENT) {
/* Special handling for regulator GPIOs if used */
desc = of_find_regulator_gpio(dev, con_id, &of_flags);
}

- if (IS_ERR(desc) && PTR_ERR(desc) == -ENOENT)
+ if (PTR_ERR(desc) == -ENOENT)
desc = of_find_arizona_gpio(dev, con_id, &of_flags);

if (IS_ERR(desc))
diff --git a/drivers/gpio/gpiolib.c b/drivers/gpio/gpiolib.c
index 78a16e42f222..20a6adf2128f 100644
--- a/drivers/gpio/gpiolib.c
+++ b/drivers/gpio/gpiolib.c
@@ -5067,7 +5067,7 @@ struct gpio_descs *__must_check gpiod_get_array_optional(struct device *dev,
struct gpio_descs *descs;

descs = gpiod_get_array(dev, con_id, flags);
- if (IS_ERR(descs) && (PTR_ERR(descs) == -ENOENT))
+ if (PTR_ERR(descs) == -ENOENT)
return NULL;

return descs;
diff --git a/drivers/i2c/busses/i2c-mv64xxx.c b/drivers/i2c/busses/i2c-mv64xxx.c
index a5a95ea5b81a..febb7c7ea72b 100644
--- a/drivers/i2c/busses/i2c-mv64xxx.c
+++ b/drivers/i2c/busses/i2c-mv64xxx.c
@@ -901,14 +901,13 @@ mv64xxx_i2c_probe(struct platform_device *pd)

/* Not all platforms have clocks */
drv_data->clk = devm_clk_get(&pd->dev, NULL);
- if (IS_ERR(drv_data->clk) && PTR_ERR(drv_data->clk) == -EPROBE_DEFER)
+ if (PTR_ERR(drv_data->clk) == -EPROBE_DEFER)
return -EPROBE_DEFER;
if (!IS_ERR(drv_data->clk))
clk_prepare_enable(drv_data->clk);

drv_data->reg_clk = devm_clk_get(&pd->dev, "reg");
- if (IS_ERR(drv_data->reg_clk) &&
- PTR_ERR(drv_data->reg_clk) == -EPROBE_DEFER)
+ if (PTR_ERR(drv_data->reg_clk) == -EPROBE_DEFER)
return -EPROBE_DEFER;
if (!IS_ERR(drv_data->reg_clk))
clk_prepare_enable(drv_data->reg_clk);
diff --git a/drivers/i2c/busses/i2c-synquacer.c b/drivers/i2c/busses/i2c-synquacer.c
index 39762f0611b1..86026798b4f7 100644
--- a/drivers/i2c/busses/i2c-synquacer.c
+++ b/drivers/i2c/busses/i2c-synquacer.c
@@ -553,7 +553,7 @@ static int synquacer_i2c_probe(struct platform_device *pdev)
&i2c->pclkrate);

i2c->pclk = devm_clk_get(&pdev->dev, "pclk");
- if (IS_ERR(i2c->pclk) && PTR_ERR(i2c->pclk) == -EPROBE_DEFER)
+ if (PTR_ERR(i2c->pclk) == -EPROBE_DEFER)
return -EPROBE_DEFER;
if (!IS_ERR_OR_NULL(i2c->pclk)) {
dev_dbg(&pdev->dev, "clock source %p\n", i2c->pclk);
diff --git a/drivers/mtd/ubi/build.c b/drivers/mtd/ubi/build.c
index d636bbe214cb..e58dda6c7075 100644
--- a/drivers/mtd/ubi/build.c
+++ b/drivers/mtd/ubi/build.c
@@ -1159,7 +1159,7 @@ static struct mtd_info * __init open_mtd_device(const char *mtd_dev)
* MTD device name.
*/
mtd = get_mtd_device_nm(mtd_dev);
- if (IS_ERR(mtd) && PTR_ERR(mtd) == -ENODEV)
+ if (PTR_ERR(mtd) == -ENODEV)
/* Probably this is an MTD character device node path */
mtd = open_mtd_by_chdev(mtd_dev);
} else
diff --git a/drivers/of/device.c b/drivers/of/device.c
index e9127db7b067..27203bfd0b22 100644
--- a/drivers/of/device.c
+++ b/drivers/of/device.c
@@ -161,7 +161,7 @@ int of_dma_configure(struct device *dev, struct device_node *np, bool force_dma)
coherent ? " " : " not ");

iommu = of_iommu_configure(dev, np);
- if (IS_ERR(iommu) && PTR_ERR(iommu) == -EPROBE_DEFER)
+ if (PTR_ERR(iommu) == -EPROBE_DEFER)
return -EPROBE_DEFER;

dev_dbg(dev, "device is%sbehind an iommu\n",
diff --git a/drivers/pci/controller/pci-tegra.c b/drivers/pci/controller/pci-tegra.c
index 673a1725ef38..40928c4d261d 100644
--- a/drivers/pci/controller/pci-tegra.c
+++ b/drivers/pci/controller/pci-tegra.c
@@ -1406,7 +1406,7 @@ static struct phy *devm_of_phy_optional_get_index(struct device *dev,
phy = devm_of_phy_get(dev, np, name);
kfree(name);

- if (IS_ERR(phy) && PTR_ERR(phy) == -ENODEV)
+ if (PTR_ERR(phy) == -ENODEV)
phy = NULL;

return phy;
diff --git a/drivers/phy/phy-core.c b/drivers/phy/phy-core.c
index b04f4fe85ac2..48d355cf0210 100644
--- a/drivers/phy/phy-core.c
+++ b/drivers/phy/phy-core.c
@@ -690,7 +690,7 @@ struct phy *phy_optional_get(struct device *dev, const char *string)
{
struct phy *phy = phy_get(dev, string);

- if (IS_ERR(phy) && (PTR_ERR(phy) == -ENODEV))
+ if (PTR_ERR(phy) == -ENODEV)
phy = NULL;

return phy;
@@ -744,7 +744,7 @@ struct phy *devm_phy_optional_get(struct device *dev, const char *string)
{
struct phy *phy = devm_phy_get(dev, string);

- if (IS_ERR(phy) && (PTR_ERR(phy) == -ENODEV))
+ if (PTR_ERR(phy) == -ENODEV)
phy = NULL;

return phy;
diff --git a/drivers/spi/spi-orion.c b/drivers/spi/spi-orion.c
index c7266ef295fd..1f59beb7d27e 100644
--- a/drivers/spi/spi-orion.c
+++ b/drivers/spi/spi-orion.c
@@ -646,8 +646,7 @@ static int orion_spi_probe(struct platform_device *pdev)

/* The following clock is only used by some SoCs */
spi->axi_clk = devm_clk_get(&pdev->dev, "axi");
- if (IS_ERR(spi->axi_clk) &&
- PTR_ERR(spi->axi_clk) == -EPROBE_DEFER) {
+ if (PTR_ERR(spi->axi_clk) == -EPROBE_DEFER) {
status = -EPROBE_DEFER;
goto out_rel_clk;
}
diff --git a/drivers/video/fbdev/imxfb.c b/drivers/video/fbdev/imxfb.c
index b3286d1fa543..5fad6bf16322 100644
--- a/drivers/video/fbdev/imxfb.c
+++ b/drivers/video/fbdev/imxfb.c
@@ -1017,7 +1017,7 @@ static int imxfb_probe(struct platform_device *pdev)
}

fbi->lcd_pwr = devm_regulator_get(&pdev->dev, "lcd");
- if (IS_ERR(fbi->lcd_pwr) && (PTR_ERR(fbi->lcd_pwr) == -EPROBE_DEFER)) {
+ if (PTR_ERR(fbi->lcd_pwr) == -EPROBE_DEFER) {
ret = -EPROBE_DEFER;
goto failed_lcd;
}
diff --git a/fs/ext4/super.c b/fs/ext4/super.c
index 2937a8873fe1..b20ac7a47425 100644
--- a/fs/ext4/super.c
+++ b/fs/ext4/super.c
@@ -5987,7 +5987,7 @@ static ssize_t ext4_quota_write(struct super_block *sb, int type,
bh = ext4_bread(handle, inode, blk,
EXT4_GET_BLOCKS_CREATE |
EXT4_GET_BLOCKS_METADATA_NOFAIL);
- } while (IS_ERR(bh) && (PTR_ERR(bh) == -ENOSPC) &&
+ } while (PTR_ERR(bh) == -ENOSPC &&
ext4_should_retry_alloc(inode->i_sb, &retries));
if (IS_ERR(bh))
return PTR_ERR(bh);
diff --git a/fs/f2fs/node.c b/fs/f2fs/node.c
index 3314a0f3405e..9d02cdcdbb07 100644
--- a/fs/f2fs/node.c
+++ b/fs/f2fs/node.c
@@ -875,7 +875,7 @@ static int truncate_dnode(struct dnode_of_data *dn)

/* get direct node */
page = f2fs_get_node_page(F2FS_I_SB(dn->inode), dn->nid);
- if (IS_ERR(page) && PTR_ERR(page) == -ENOENT)
+ if (PTR_ERR(page) == -ENOENT)
return 1;
else if (IS_ERR(page))
return PTR_ERR(page);
diff --git a/fs/ocfs2/suballoc.c b/fs/ocfs2/suballoc.c
index 4180c3ef0a68..939df99d2dec 100644
--- a/fs/ocfs2/suballoc.c
+++ b/fs/ocfs2/suballoc.c
@@ -696,7 +696,7 @@ static int ocfs2_block_group_alloc(struct ocfs2_super *osb,

bg_bh = ocfs2_block_group_alloc_contig(osb, handle, alloc_inode,
ac, cl);
- if (IS_ERR(bg_bh) && (PTR_ERR(bg_bh) == -ENOSPC))
+ if (PTR_ERR(bg_bh) == -ENOSPC)
bg_bh = ocfs2_block_group_alloc_discontig(handle,
alloc_inode,
ac, cl);
diff --git a/fs/sysfs/group.c b/fs/sysfs/group.c
index d41c21fef138..c4ab045926b7 100644
--- a/fs/sysfs/group.c
+++ b/fs/sysfs/group.c
@@ -449,7 +449,7 @@ int __compat_only_sysfs_link_entry_to_kobj(struct kobject *kobj,
}

link = kernfs_create_link(kobj->sd, target_name, entry);
- if (IS_ERR(link) && PTR_ERR(link) == -EEXIST)
+ if (PTR_ERR(link) == -EEXIST)
sysfs_warn_dup(kobj->sd, target_name);

kernfs_put(entry);
diff --git a/net/core/dev.c b/net/core/dev.c
index 0ad39c87b7fd..6d849b6f5724 100644
--- a/net/core/dev.c
+++ b/net/core/dev.c
@@ -5723,7 +5723,7 @@ static enum gro_result dev_gro_receive(struct napi_struct *napi, struct sk_buff
if (&ptype->list == head)
goto normal;

- if (IS_ERR(pp) && PTR_ERR(pp) == -EINPROGRESS) {
+ if (PTR_ERR(pp) == -EINPROGRESS) {
ret = GRO_CONSUMED;
goto ok;
}
diff --git a/net/core/filter.c b/net/core/filter.c
index 28b3c258188c..687934f3aad7 100644
--- a/net/core/filter.c
+++ b/net/core/filter.c
@@ -1573,7 +1573,7 @@ int sk_reuseport_attach_bpf(u32 ufd, struct sock *sk)
return -EPERM;

prog = bpf_prog_get_type(ufd, BPF_PROG_TYPE_SOCKET_FILTER);
- if (IS_ERR(prog) && PTR_ERR(prog) == -EINVAL)
+ if (PTR_ERR(prog) == -EINVAL)
prog = bpf_prog_get_type(ufd, BPF_PROG_TYPE_SK_REUSEPORT);
if (IS_ERR(prog))
return PTR_ERR(prog);
diff --git a/net/xfrm/xfrm_policy.c b/net/xfrm/xfrm_policy.c
index f2d1e573ea55..93b9e00cca33 100644
--- a/net/xfrm/xfrm_policy.c
+++ b/net/xfrm/xfrm_policy.c
@@ -3186,7 +3186,7 @@ struct dst_entry *xfrm_lookup_route(struct net *net, struct dst_entry *dst_orig,
flags | XFRM_LOOKUP_QUEUE |
XFRM_LOOKUP_KEEP_DST_REF);

- if (IS_ERR(dst) && PTR_ERR(dst) == -EREMOTE)
+ if (PTR_ERR(dst) == -EREMOTE)
return make_blackhole(net, dst_orig->ops->family, dst_orig);

if (IS_ERR(dst))
diff --git a/sound/soc/codecs/ak4104.c b/sound/soc/codecs/ak4104.c
index e8c5fda82e08..979cfb165eed 100644
--- a/sound/soc/codecs/ak4104.c
+++ b/sound/soc/codecs/ak4104.c
@@ -295,8 +295,7 @@ static int ak4104_spi_probe(struct spi_device *spi)

reset_gpiod = devm_gpiod_get_optional(&spi->dev, "reset",
GPIOD_OUT_HIGH);
- if (IS_ERR(reset_gpiod) &&
- PTR_ERR(reset_gpiod) == -EPROBE_DEFER)
+ if (PTR_ERR(reset_gpiod) == -EPROBE_DEFER)
return -EPROBE_DEFER;

/* read the 'reserved' register - according to the datasheet, it
diff --git a/sound/soc/codecs/cs4270.c b/sound/soc/codecs/cs4270.c
index 793a14d58667..5f25b9f872bd 100644
--- a/sound/soc/codecs/cs4270.c
+++ b/sound/soc/codecs/cs4270.c
@@ -681,8 +681,7 @@ static int cs4270_i2c_probe(struct i2c_client *i2c_client,

reset_gpiod = devm_gpiod_get_optional(&i2c_client->dev, "reset",
GPIOD_OUT_HIGH);
- if (IS_ERR(reset_gpiod) &&
- PTR_ERR(reset_gpiod) == -EPROBE_DEFER)
+ if (PTR_ERR(reset_gpiod) == -EPROBE_DEFER)
return -EPROBE_DEFER;

cs4270->regmap = devm_regmap_init_i2c(i2c_client, &cs4270_regmap);
diff --git a/sound/soc/codecs/tlv320aic32x4.c b/sound/soc/codecs/tlv320aic32x4.c
index b4e9a6c73f90..d087f3b20b1d 100644
--- a/sound/soc/codecs/tlv320aic32x4.c
+++ b/sound/soc/codecs/tlv320aic32x4.c
@@ -1098,11 +1098,9 @@ static int aic32x4_setup_regulators(struct device *dev,
return PTR_ERR(aic32x4->supply_av);
}
} else {
- if (IS_ERR(aic32x4->supply_dv) &&
- PTR_ERR(aic32x4->supply_dv) == -EPROBE_DEFER)
+ if (PTR_ERR(aic32x4->supply_dv) == -EPROBE_DEFER)
return -EPROBE_DEFER;
- if (IS_ERR(aic32x4->supply_av) &&
- PTR_ERR(aic32x4->supply_av) == -EPROBE_DEFER)
+ if (PTR_ERR(aic32x4->supply_av) == -EPROBE_DEFER)
return -EPROBE_DEFER;
}

diff --git a/sound/soc/sunxi/sun4i-spdif.c b/sound/soc/sunxi/sun4i-spdif.c
index cbe598b0fb10..98a9fe645521 100644
--- a/sound/soc/sunxi/sun4i-spdif.c
+++ b/sound/soc/sunxi/sun4i-spdif.c
@@ -555,7 +555,7 @@ static int sun4i_spdif_probe(struct platform_device *pdev)
if (quirks->has_reset) {
host->rst = devm_reset_control_get_optional_exclusive(&pdev->dev,
NULL);
- if (IS_ERR(host->rst) && PTR_ERR(host->rst) == -EPROBE_DEFER) {
+ if (PTR_ERR(host->rst) == -EPROBE_DEFER) {
ret = -EPROBE_DEFER;
dev_err(&pdev->dev, "Failed to get reset: %d\n", ret);
return ret;
--
2.17.1