修改4g拨号为QMI,需要在系统里后台执行quectel-CM

hc

2024-10-22 8ac6c7a54ed1b98d142dce24b11c6de6a1e239a5

 kernel/sound/core/pcm_misc.c
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@@ -42,7 +42,12 @@
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 /* we do lots of calculations on snd_pcm_format_t; shut up sparse */
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 #define INT	__force int
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-static struct pcm_format_data pcm_formats[(INT)SNDRV_PCM_FORMAT_LAST+1] = {
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+static bool valid_format(snd_pcm_format_t format)
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+{
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+	return (INT)format >= 0 && (INT)format <= (INT)SNDRV_PCM_FORMAT_LAST;
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+}
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+
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+static const struct pcm_format_data pcm_formats[(INT)SNDRV_PCM_FORMAT_LAST+1] = {
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 	[SNDRV_PCM_FORMAT_S8] = {
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 		.width = 8, .phys = 8, .le = -1, .signd = 1,
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 		.silence = {},
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@@ -259,7 +264,7 @@
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 int snd_pcm_format_signed(snd_pcm_format_t format)
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 {
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 	int val;
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-	if ((INT)format < 0 || (INT)format > (INT)SNDRV_PCM_FORMAT_LAST)
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+	if (!valid_format(format))
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 		return -EINVAL;
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 	if ((val = pcm_formats[(INT)format].signd) < 0)
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 		return -EINVAL;
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@@ -307,7 +312,7 @@
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 int snd_pcm_format_little_endian(snd_pcm_format_t format)
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 {
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 	int val;
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-	if ((INT)format < 0 || (INT)format > (INT)SNDRV_PCM_FORMAT_LAST)
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+	if (!valid_format(format))
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 		return -EINVAL;
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 	if ((val = pcm_formats[(INT)format].le) < 0)
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 		return -EINVAL;
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@@ -343,7 +348,7 @@
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 int snd_pcm_format_width(snd_pcm_format_t format)
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 {
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 	int val;
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-	if ((INT)format < 0 || (INT)format > (INT)SNDRV_PCM_FORMAT_LAST)
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+	if (!valid_format(format))
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 		return -EINVAL;
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 	if ((val = pcm_formats[(INT)format].width) == 0)
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 		return -EINVAL;
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@@ -361,7 +366,7 @@
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 int snd_pcm_format_physical_width(snd_pcm_format_t format)
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 {
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 	int val;
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-	if ((INT)format < 0 || (INT)format > (INT)SNDRV_PCM_FORMAT_LAST)
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+	if (!valid_format(format))
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 		return -EINVAL;
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 	if ((val = pcm_formats[(INT)format].phys) == 0)
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 		return -EINVAL;
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@@ -394,7 +399,7 @@
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  */
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 const unsigned char *snd_pcm_format_silence_64(snd_pcm_format_t format)
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 {
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-	if ((INT)format < 0 || (INT)format > (INT)SNDRV_PCM_FORMAT_LAST)
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+	if (!valid_format(format))
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 		return NULL;
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 	if (! pcm_formats[(INT)format].phys)
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 		return NULL;
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@@ -415,15 +420,16 @@
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 int snd_pcm_format_set_silence(snd_pcm_format_t format, void *data, unsigned int samples)
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 {
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 	int width;
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-	unsigned char *dst, *pat;
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+	unsigned char *dst;
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+	const unsigned char *pat;
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-	if ((INT)format < 0 || (INT)format > (INT)SNDRV_PCM_FORMAT_LAST)
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+	if (!valid_format(format))
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 		return -EINVAL;
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 	if (samples == 0)
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 		return 0;
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 	width = pcm_formats[(INT)format].phys; /* physical width */
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 	pat = pcm_formats[(INT)format].silence;
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-	if (! width)
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+	if (!width || !pat)
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 		return -EINVAL;
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 	/* signed or 1 byte data */
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 	if (pcm_formats[(INT)format].signd == 1 || width <= 8) {
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@@ -473,32 +479,32 @@
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 EXPORT_SYMBOL(snd_pcm_format_set_silence);
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 /**
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- * snd_pcm_limit_hw_rates - determine rate_min/rate_max fields
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- * @runtime: the runtime instance
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+ * snd_pcm_hw_limit_rates - determine rate_min/rate_max fields
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+ * @hw: the pcm hw instance
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  *
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  * Determines the rate_min and rate_max fields from the rates bits of
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- * the given runtime->hw.
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+ * the given hw.
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  *
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  * Return: Zero if successful.
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  */
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-int snd_pcm_limit_hw_rates(struct snd_pcm_runtime *runtime)
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+int snd_pcm_hw_limit_rates(struct snd_pcm_hardware *hw)
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 {
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 	int i;
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 	for (i = 0; i < (int)snd_pcm_known_rates.count; i++) {
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-		if (runtime->hw.rates & (1 << i)) {
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-			runtime->hw.rate_min = snd_pcm_known_rates.list[i];
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+		if (hw->rates & (1 << i)) {
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+			hw->rate_min = snd_pcm_known_rates.list[i];
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 			break;
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 		}
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 	}
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 	for (i = (int)snd_pcm_known_rates.count - 1; i >= 0; i--) {
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-		if (runtime->hw.rates & (1 << i)) {
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-			runtime->hw.rate_max = snd_pcm_known_rates.list[i];
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+		if (hw->rates & (1 << i)) {
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+			hw->rate_max = snd_pcm_known_rates.list[i];
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 			break;
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 		}
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 	}
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 	return 0;
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 }
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-EXPORT_SYMBOL(snd_pcm_limit_hw_rates);
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+EXPORT_SYMBOL(snd_pcm_hw_limit_rates);
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 /**
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  * snd_pcm_rate_to_rate_bit - converts sample rate to SNDRV_PCM_RATE_xxx bit