From fa6e1cb66e2f9d2d4703e7bd7dd50839bb10e4c3 Mon Sep 17 00:00:00 2001 From: David Woodhouse Date: Thu, 29 May 2008 11:58:27 +0300 Subject: [PATCH] maestro3: treat firmware data as const The maestro3 driver is byte-swapping its firmware to be host-endian in advance, when it doesn't seem to be necessary -- we could just use le16_to_cpu() as we load it. Doing that means that we need to switch the in-tree firmware to be little-endian too. Take the least intrusive way of doing this, which is to switch the existing snd_m3_convert_from_le() function to convert _to_ little-endian instead, and use it on the in-tree firmware instead of the loaded firmware. It's a bit suboptimal but doesn't matter much right now because we're about to remove the special cases for the in-tree version anyway. Signed-off-by: David Woodhouse --- sound/pci/maestro3.c | 29 +++++++++++++++-------------- 1 file changed, 15 insertions(+), 14 deletions(-) diff --git a/sound/pci/maestro3.c b/sound/pci/maestro3.c index a536c59fbea..9dfba6eff85 100644 --- a/sound/pci/maestro3.c +++ b/sound/pci/maestro3.c @@ -2240,18 +2240,16 @@ static const struct firmware assp_minisrc = { .size = sizeof assp_minisrc_image }; -#else /* CONFIG_SND_MAESTRO3_FIRMWARE_IN_KERNEL */ - #ifdef __LITTLE_ENDIAN -static inline void snd_m3_convert_from_le(const struct firmware *fw) { } +static inline void snd_m3_convert_to_le(const struct firmware *fw) { } #else -static void snd_m3_convert_from_le(const struct firmware *fw) +static void snd_m3_convert_to_le(const struct firmware *fw) { int i; u16 *data = (u16 *)fw->data; for (i = 0; i < fw->size / 2; ++i) - le16_to_cpus(&data[i]); + cpu_to_le16s(&data[i]); } #endif @@ -2271,7 +2269,7 @@ static const u16 minisrc_lpf[MINISRC_LPF_LEN] = { static void snd_m3_assp_init(struct snd_m3 *chip) { unsigned int i; - u16 *data; + const u16 *data; /* zero kernel data */ for (i = 0; i < (REV_B_DATA_MEMORY_UNIT_LENGTH * NUM_UNITS_KERNEL_DATA) / 2; i++) @@ -2289,10 +2287,11 @@ static void snd_m3_assp_init(struct snd_m3 *chip) KDATA_DMA_XFER0); /* write kernel into code memory.. */ - data = (u16 *)chip->assp_kernel_image->data; + data = (const u16 *)chip->assp_kernel_image->data; for (i = 0 ; i * 2 < chip->assp_kernel_image->size; i++) { snd_m3_assp_write(chip, MEMTYPE_INTERNAL_CODE, - REV_B_CODE_MEMORY_BEGIN + i, data[i]); + REV_B_CODE_MEMORY_BEGIN + i, + le16_to_cpu(data[i])); } /* @@ -2301,10 +2300,10 @@ static void snd_m3_assp_init(struct snd_m3 *chip) * drop it there. It seems that the minisrc doesn't * need vectors, so we won't bother with them.. */ - data = (u16 *)chip->assp_minisrc_image->data; + data = (const u16 *)chip->assp_minisrc_image->data; for (i = 0; i * 2 < chip->assp_minisrc_image->size; i++) { snd_m3_assp_write(chip, MEMTYPE_INTERNAL_CODE, - 0x400 + i, data[i]); + 0x400 + i, le16_to_cpu(data[i])); } /* @@ -2749,8 +2748,7 @@ snd_m3_create(struct snd_card *card, struct pci_dev *pci, if (err < 0) { snd_m3_free(chip); return err; - } else - snd_m3_convert_from_le(chip->assp_kernel_image); + } #endif #ifdef CONFIG_SND_MAESTRO3_FIRMWARE_IN_KERNEL @@ -2761,8 +2759,7 @@ snd_m3_create(struct snd_card *card, struct pci_dev *pci, if (err < 0) { snd_m3_free(chip); return err; - } else - snd_m3_convert_from_le(chip->assp_minisrc_image); + } #endif if ((err = pci_request_regions(pci, card->driver)) < 0) { @@ -2915,6 +2912,10 @@ static struct pci_driver driver = { static int __init alsa_card_m3_init(void) { +#ifdef CONFIG_SND_MAESTRO3_FIRMWARE_IN_KERNEL + snd_m3_convert_to_le(&assp_kernel); + snd_m3_convert_to_le(&assp_minisrc); +#endif return pci_register_driver(&driver); } -- 2.39.5