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ALSA: Cleanup redundant tests on unsigned

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The variables are unsigned so the test `>= 0' is always true,
the `< 0' test always fails. In these cases the other part of
the test catches wrapped values.

In dac_audio_write() there does not occur a test for wrapped
values, but the test appears redundant.

Signed-off-by: Roel Kluin <roel.kluin@gmail.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Roel Kluin 2009-10-23 16:03:08 +02:00 committed by Takashi Iwai
parent a688e4885c
commit 84ed1a1942
7 changed files with 8 additions and 12 deletions
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3
sound/oss/sh_dac_audio.c
View File

@ -164,9 +164,6 @@ static ssize_t dac_audio_write(struct file *file, const char *buf, size_t count,
int free;
int nbytes;
if (count < 0)
return -EINVAL;
if (!count) {
dac_audio_sync();
return 0;

4
sound/pci/ca0106/ca0106_proc.c
View File

@ -304,7 +304,7 @@ static void snd_ca0106_proc_reg_write32(struct snd_info_entry *entry,
while (!snd_info_get_line(buffer, line, sizeof(line))) {
if (sscanf(line, "%x %x", &reg, &val) != 2)
continue;
if ((reg < 0x40) && (reg >=0) && (val <= 0xffffffff) ) {
if (reg < 0x40 && val <= 0xffffffff) {
spin_lock_irqsave(&emu->emu_lock, flags);
outl(val, emu->port + (reg & 0xfffffffc));
spin_unlock_irqrestore(&emu->emu_lock, flags);
@ -405,7 +405,7 @@ static void snd_ca0106_proc_reg_write(struct snd_info_entry *entry,
while (!snd_info_get_line(buffer, line, sizeof(line))) {
if (sscanf(line, "%x %x %x", &reg, &channel_id, &val) != 3)
continue;
if ((reg < 0x80) && (reg >=0) && (val <= 0xffffffff) && (channel_id >=0) && (channel_id <= 3) )
if (reg < 0x80 && val <= 0xffffffff && channel_id <= 3)
snd_ca0106_ptr_write(emu, reg, channel_id, val);
}
}

2
sound/pci/ctxfi/ctatc.c
View File

@ -240,7 +240,7 @@ static int select_rom(unsigned int pitch)
} else if (pitch == 0x02000000) {
/* pitch == 2 */
return 3;
} else if (pitch >= 0x0 && pitch <= 0x08000000) {
} else if (pitch <= 0x08000000) {
/* 0 <= pitch <= 8 */
return 0;
} else {

3
sound/pci/emu10k1/emu10k1x.c
View File

@ -1040,8 +1040,7 @@ static void snd_emu10k1x_proc_reg_write(struct snd_info_entry *entry,
if (sscanf(line, "%x %x %x", &reg, &channel_id, &val) != 3)
continue;
if ((reg < 0x49) && (reg >= 0) && (val <= 0xffffffff)
&& (channel_id >= 0) && (channel_id <= 2) )
if (reg < 0x49 && val <= 0xffffffff && channel_id <= 2)
snd_emu10k1x_ptr_write(emu, reg, channel_id, val);
}
}

4
sound/pci/emu10k1/emuproc.c
View File

@ -451,7 +451,7 @@ static void snd_emu_proc_io_reg_write(struct snd_info_entry *entry,
while (!snd_info_get_line(buffer, line, sizeof(line))) {
if (sscanf(line, "%x %x", &reg, &val) != 2)
continue;
if ((reg < 0x40) && (reg >= 0) && (val <= 0xffffffff) ) {
if (reg < 0x40 && val <= 0xffffffff) {
spin_lock_irqsave(&emu->emu_lock, flags);
outl(val, emu->port + (reg & 0xfffffffc));
spin_unlock_irqrestore(&emu->emu_lock, flags);
@ -527,7 +527,7 @@ static void snd_emu_proc_ptr_reg_write(struct snd_info_entry *entry,
while (!snd_info_get_line(buffer, line, sizeof(line))) {
if (sscanf(line, "%x %x %x", &reg, &channel_id, &val) != 3)
continue;
if ((reg < 0xa0) && (reg >= 0) && (val <= 0xffffffff) && (channel_id >= 0) && (channel_id <= 3) )
if (reg < 0xa0 && val <= 0xffffffff && channel_id <= 3)
snd_ptr_write(emu, iobase, reg, channel_id, val);
}
}

2
sound/pci/emu10k1/io.c
View File

@ -256,7 +256,7 @@ int snd_emu1010_fpga_write(struct snd_emu10k1 * emu, u32 reg, u32 value)
if (reg > 0x3f)
return 1;
reg += 0x40; /* 0x40 upwards are registers. */
if (value < 0 || value > 0x3f) /* 0 to 0x3f are values */
if (value > 0x3f) /* 0 to 0x3f are values */
return 1;
spin_lock_irqsave(&emu->emu_lock, flags);
outl(reg, emu->port + A_IOCFG);

2
sound/soc/codecs/tlv320aic23.c
View File

@ -85,7 +85,7 @@ static int tlv320aic23_write(struct snd_soc_codec *codec, unsigned int reg,
* of data into val
*/
if ((reg < 0 || reg > 9) && (reg != 15)) {
if (reg > 9 && reg != 15) {
printk(KERN_WARNING "%s Invalid register R%u\n", __func__, reg);
return -1;
}