The vxpocket driver is using the explicit cast from the parent class pointer, but it'll be broken when the structure field randomization is applied. Use container_of() in a modern manner, instead.
Signed-off-by: Takashi Iwai tiwai@suse.de --- sound/pcmcia/vx/vxp_mixer.c | 10 +++++----- sound/pcmcia/vx/vxp_ops.c | 28 ++++++++++++++-------------- sound/pcmcia/vx/vxpocket.c | 4 ++-- sound/pcmcia/vx/vxpocket.h | 2 ++ 4 files changed, 23 insertions(+), 21 deletions(-)
diff --git a/sound/pcmcia/vx/vxp_mixer.c b/sound/pcmcia/vx/vxp_mixer.c index a4a664259f0d..1ca3eef9e305 100644 --- a/sound/pcmcia/vx/vxp_mixer.c +++ b/sound/pcmcia/vx/vxp_mixer.c @@ -43,7 +43,7 @@ static int vx_mic_level_info(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_ static int vx_mic_level_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) { struct vx_core *_chip = snd_kcontrol_chip(kcontrol); - struct snd_vxpocket *chip = (struct snd_vxpocket *)_chip; + struct snd_vxpocket *chip = to_vxpocket(_chip); ucontrol->value.integer.value[0] = chip->mic_level; return 0; } @@ -51,7 +51,7 @@ static int vx_mic_level_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_v static int vx_mic_level_put(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) { struct vx_core *_chip = snd_kcontrol_chip(kcontrol); - struct snd_vxpocket *chip = (struct snd_vxpocket *)_chip; + struct snd_vxpocket *chip = to_vxpocket(_chip); unsigned int val = ucontrol->value.integer.value[0];
if (val > MIC_LEVEL_MAX) @@ -88,7 +88,7 @@ static struct snd_kcontrol_new vx_control_mic_level = { static int vx_mic_boost_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) { struct vx_core *_chip = snd_kcontrol_chip(kcontrol); - struct snd_vxpocket *chip = (struct snd_vxpocket *)_chip; + struct snd_vxpocket *chip = to_vxpocket(_chip); ucontrol->value.integer.value[0] = chip->mic_level; return 0; } @@ -96,7 +96,7 @@ static int vx_mic_boost_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_v static int vx_mic_boost_put(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) { struct vx_core *_chip = snd_kcontrol_chip(kcontrol); - struct snd_vxpocket *chip = (struct snd_vxpocket *)_chip; + struct snd_vxpocket *chip = to_vxpocket(_chip); int val = !!ucontrol->value.integer.value[0]; mutex_lock(&_chip->mixer_mutex); if (chip->mic_level != val) { @@ -120,7 +120,7 @@ static struct snd_kcontrol_new vx_control_mic_boost = {
int vxp_add_mic_controls(struct vx_core *_chip) { - struct snd_vxpocket *chip = (struct snd_vxpocket *)_chip; + struct snd_vxpocket *chip = to_vxpocket(_chip); int err;
/* mute input levels */ diff --git a/sound/pcmcia/vx/vxp_ops.c b/sound/pcmcia/vx/vxp_ops.c index 5f97791f00d7..217cc76e3102 100644 --- a/sound/pcmcia/vx/vxp_ops.c +++ b/sound/pcmcia/vx/vxp_ops.c @@ -50,7 +50,7 @@ static int vxp_reg_offset[VX_REG_MAX] = {
static inline unsigned long vxp_reg_addr(struct vx_core *_chip, int reg) { - struct snd_vxpocket *chip = (struct snd_vxpocket *)_chip; + struct snd_vxpocket *chip = to_vxpocket(_chip); return chip->port + vxp_reg_offset[reg]; }
@@ -110,7 +110,7 @@ static int vx_check_magic(struct vx_core *chip)
static void vxp_reset_dsp(struct vx_core *_chip) { - struct snd_vxpocket *chip = (struct snd_vxpocket *)_chip; + struct snd_vxpocket *chip = to_vxpocket(_chip);
/* set the reset dsp bit to 1 */ vx_outb(chip, CDSP, chip->regCDSP | VXP_CDSP_DSP_RESET_MASK); @@ -128,7 +128,7 @@ static void vxp_reset_dsp(struct vx_core *_chip) */ static void vxp_reset_codec(struct vx_core *_chip) { - struct snd_vxpocket *chip = (struct snd_vxpocket *)_chip; + struct snd_vxpocket *chip = to_vxpocket(_chip);
/* Set the reset CODEC bit to 1. */ vx_outb(chip, CDSP, chip->regCDSP | VXP_CDSP_CODEC_RESET_MASK); @@ -147,7 +147,7 @@ static void vxp_reset_codec(struct vx_core *_chip) */ static int vxp_load_xilinx_binary(struct vx_core *_chip, const struct firmware *fw) { - struct snd_vxpocket *chip = (struct snd_vxpocket *)_chip; + struct snd_vxpocket *chip = to_vxpocket(_chip); unsigned int i; int c; int regCSUER, regRUER; @@ -280,7 +280,7 @@ static int vxp_load_dsp(struct vx_core *vx, int index, const struct firmware *fw */ static int vxp_test_and_ack(struct vx_core *_chip) { - struct snd_vxpocket *chip = (struct snd_vxpocket *)_chip; + struct snd_vxpocket *chip = to_vxpocket(_chip);
/* not booted yet? */ if (! (_chip->chip_status & VX_STAT_XILINX_LOADED)) @@ -307,7 +307,7 @@ static int vxp_test_and_ack(struct vx_core *_chip) */ static void vxp_validate_irq(struct vx_core *_chip, int enable) { - struct snd_vxpocket *chip = (struct snd_vxpocket *)_chip; + struct snd_vxpocket *chip = to_vxpocket(_chip);
/* Set the interrupt enable bit to 1 in CDSP register */ if (enable) @@ -323,7 +323,7 @@ static void vxp_validate_irq(struct vx_core *_chip, int enable) */ static void vx_setup_pseudo_dma(struct vx_core *_chip, int do_write) { - struct snd_vxpocket *chip = (struct snd_vxpocket *)_chip; + struct snd_vxpocket *chip = to_vxpocket(_chip);
/* Interrupt mode and HREQ pin enabled for host transmit / receive data transfers */ vx_outb(chip, ICR, do_write ? ICR_TREQ : ICR_RREQ); @@ -343,7 +343,7 @@ static void vx_setup_pseudo_dma(struct vx_core *_chip, int do_write) */ static void vx_release_pseudo_dma(struct vx_core *_chip) { - struct snd_vxpocket *chip = (struct snd_vxpocket *)_chip; + struct snd_vxpocket *chip = to_vxpocket(_chip);
/* Disable DMA and 16-bit accesses */ chip->regDIALOG &= ~(VXP_DLG_DMAWRITE_SEL_MASK| @@ -403,7 +403,7 @@ static void vxp_dma_write(struct vx_core *chip, struct snd_pcm_runtime *runtime, static void vxp_dma_read(struct vx_core *chip, struct snd_pcm_runtime *runtime, struct vx_pipe *pipe, int count) { - struct snd_vxpocket *pchip = (struct snd_vxpocket *)chip; + struct snd_vxpocket *pchip = to_vxpocket(_chip); long port = vxp_reg_addr(chip, VX_DMA); int offset = pipe->hw_ptr; unsigned short *addr = (unsigned short *)(runtime->dma_area + offset); @@ -467,7 +467,7 @@ static void vxp_write_codec_reg(struct vx_core *chip, int codec, unsigned int da */ void vx_set_mic_boost(struct vx_core *chip, int boost) { - struct snd_vxpocket *pchip = (struct snd_vxpocket *)chip; + struct snd_vxpocket *pchip = to_vxpocket(_chip);
if (chip->chip_status & VX_STAT_IS_STALE) return; @@ -509,7 +509,7 @@ static int vx_compute_mic_level(int level) */ void vx_set_mic_level(struct vx_core *chip, int level) { - struct snd_vxpocket *pchip = (struct snd_vxpocket *)chip; + struct snd_vxpocket *pchip = to_vxpocket(_chip);
if (chip->chip_status & VX_STAT_IS_STALE) return; @@ -528,7 +528,7 @@ void vx_set_mic_level(struct vx_core *chip, int level) */ static void vxp_change_audio_source(struct vx_core *_chip, int src) { - struct snd_vxpocket *chip = (struct snd_vxpocket *)_chip; + struct snd_vxpocket *chip = to_vxpocket(_chip);
switch (src) { case VX_AUDIO_SRC_DIGITAL: @@ -568,7 +568,7 @@ static void vxp_change_audio_source(struct vx_core *_chip, int src) */ static void vxp_set_clock_source(struct vx_core *_chip, int source) { - struct snd_vxpocket *chip = (struct snd_vxpocket *)_chip; + struct snd_vxpocket *chip = to_vxpocket(_chip);
if (source == INTERNAL_QUARTZ) chip->regCDSP &= ~VXP_CDSP_CLOCKIN_SEL_MASK; @@ -583,7 +583,7 @@ static void vxp_set_clock_source(struct vx_core *_chip, int source) */ static void vxp_reset_board(struct vx_core *_chip, int cold_reset) { - struct snd_vxpocket *chip = (struct snd_vxpocket *)_chip; + struct snd_vxpocket *chip = to_vxpocket(_chip);
chip->regCDSP = 0; chip->regDIALOG = 0; diff --git a/sound/pcmcia/vx/vxpocket.c b/sound/pcmcia/vx/vxpocket.c index b16f42deed67..ca0d19e723fd 100644 --- a/sound/pcmcia/vx/vxpocket.c +++ b/sound/pcmcia/vx/vxpocket.c @@ -155,7 +155,7 @@ static int snd_vxpocket_new(struct snd_card *card, int ibl, } chip->ibl.size = ibl;
- vxp = (struct snd_vxpocket *)chip; + vxp = to_vxpocket(chip);
vxp->p_dev = link; link->priv = chip; @@ -187,7 +187,7 @@ static int snd_vxpocket_assign_resources(struct vx_core *chip, int port, int irq { int err; struct snd_card *card = chip->card; - struct snd_vxpocket *vxp = (struct snd_vxpocket *)chip; + struct snd_vxpocket *vxp = to_vxpocket(chip);
snd_printdd(KERN_DEBUG "vxpocket assign resources: port = 0x%x, irq = %d\n", port, irq); vxp->port = port; diff --git a/sound/pcmcia/vx/vxpocket.h b/sound/pcmcia/vx/vxpocket.h index 13d658c1a216..26f4255e132e 100644 --- a/sound/pcmcia/vx/vxpocket.h +++ b/sound/pcmcia/vx/vxpocket.h @@ -43,6 +43,8 @@ struct snd_vxpocket { struct pcmcia_device *p_dev; };
+#define to_vxpocket(x) container_of(x, struct snd_vxpocket, core) + extern struct snd_vx_ops snd_vxpocket_ops;
void vx_set_mic_boost(struct vx_core *chip, int boost);