[PATCH] ASoC: codecs: lpass-va-macro: remove some dead code
The "decimator" variable is in the 0-7 range and it's unsigned so there is no need to check for negative values.
Fixes: 908e6b1df26e ("ASoC: codecs: lpass-va-macro: Add support to VA Macro") Signed-off-by: Dan Carpenter dan.carpenter@oracle.com --- sound/soc/codecs/lpass-va-macro.c | 15 ++++----------- 1 file changed, 4 insertions(+), 11 deletions(-)
diff --git a/sound/soc/codecs/lpass-va-macro.c b/sound/soc/codecs/lpass-va-macro.c index 3e6bbef26dcb..91e6890d6efc 100644 --- a/sound/soc/codecs/lpass-va-macro.c +++ b/sound/soc/codecs/lpass-va-macro.c @@ -844,17 +844,10 @@ static int va_macro_hw_params(struct snd_pcm_substream *substream,
for_each_set_bit(decimator, &va->active_ch_mask[dai->id], VA_MACRO_DEC_MAX) { - if (decimator >= 0) { - tx_fs_reg = CDC_VA_TX0_TX_PATH_CTL + - VA_MACRO_TX_PATH_OFFSET * decimator; - snd_soc_component_update_bits(component, tx_fs_reg, - 0x0F, tx_fs_rate); - } else { - dev_err(va_dev, - "%s: ERROR: Invalid decimator: %d\n", - __func__, decimator); - return -EINVAL; - } + tx_fs_reg = CDC_VA_TX0_TX_PATH_CTL + + VA_MACRO_TX_PATH_OFFSET * decimator; + snd_soc_component_update_bits(component, tx_fs_reg, 0x0F, + tx_fs_rate); } return 0; }
Thanks Dan for the patch!
Do you use any tools to do this checks?
On 02/12/2020 06:51, Dan Carpenter wrote:
The "decimator" variable is in the 0-7 range and it's unsigned so there is no need to check for negative values.
Fixes: 908e6b1df26e ("ASoC: codecs: lpass-va-macro: Add support to VA Macro") Signed-off-by: Dan Carpenter dan.carpenter@oracle.com
Reviewed-by: Srinivas Kandagatla srinivas.kandagatla@linaro.org
sound/soc/codecs/lpass-va-macro.c | 15 ++++----------- 1 file changed, 4 insertions(+), 11 deletions(-)
diff --git a/sound/soc/codecs/lpass-va-macro.c b/sound/soc/codecs/lpass-va-macro.c index 3e6bbef26dcb..91e6890d6efc 100644 --- a/sound/soc/codecs/lpass-va-macro.c +++ b/sound/soc/codecs/lpass-va-macro.c @@ -844,17 +844,10 @@ static int va_macro_hw_params(struct snd_pcm_substream *substream,
for_each_set_bit(decimator, &va->active_ch_mask[dai->id], VA_MACRO_DEC_MAX) {
if (decimator >= 0) {tx_fs_reg = CDC_VA_TX0_TX_PATH_CTL +VA_MACRO_TX_PATH_OFFSET * decimator;snd_soc_component_update_bits(component, tx_fs_reg,0x0F, tx_fs_rate);} else {dev_err(va_dev,"%s: ERROR: Invalid decimator: %d\n",__func__, decimator);return -EINVAL;}
tx_fs_reg = CDC_VA_TX0_TX_PATH_CTL +VA_MACRO_TX_PATH_OFFSET * decimator;snd_soc_component_update_bits(component, tx_fs_reg, 0x0F,tx_fs_rate);
On Wed, Dec 02, 2020 at 03:54:53PM +0000, Srinivas Kandagatla wrote:
Thanks Dan for the patch!
Do you use any tools to do this checks?
Yeah. This was a Smatch warning:
sound/soc/codecs/lpass-va-macro.c:847 va_macro_hw_params() warn: always true condition '(decimator >= 0) => (0-u32max >= 0)'
But every static checker will complain about these.
regards, dan carpenter
On Wed, 2 Dec 2020 09:51:46 +0300, Dan Carpenter wrote:
The "decimator" variable is in the 0-7 range and it's unsigned so there is no need to check for negative values.
Applied to
https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound.git for-next
Thanks!
[1/1] ASoC: codecs: lpass-va-macro: remove some dead code commit: 4d638b9cc79eff11bad13fb3715c0ef38a9edaec
All being well this means that it will be integrated into the linux-next tree (usually sometime in the next 24 hours) and sent to Linus during the next merge window (or sooner if it is a bug fix), however if problems are discovered then the patch may be dropped or reverted.
You may get further e-mails resulting from automated or manual testing and review of the tree, please engage with people reporting problems and send followup patches addressing any issues that are reported if needed.
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Thanks, Mark
participants (3)
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Dan Carpenter -
Mark Brown -
Srinivas Kandagatla